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WO2017199253A1 - Prévision de rendement et efficacité d'utilisation de la lumière - Google Patents

Prévision de rendement et efficacité d'utilisation de la lumière Download PDF

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Publication number
WO2017199253A1
WO2017199253A1 PCT/IL2017/050552 IL2017050552W WO2017199253A1 WO 2017199253 A1 WO2017199253 A1 WO 2017199253A1 IL 2017050552 W IL2017050552 W IL 2017050552W WO 2017199253 A1 WO2017199253 A1 WO 2017199253A1
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Prior art keywords
greenhouse
radiation
plants
tmfw
acy
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PCT/IL2017/050552
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English (en)
Inventor
Menachem DINAR
Omri MORAG
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Paskal Technologies Agriculture Cooperative Ltd
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Paskal Technologies Agriculture Cooperative Ltd
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Application filed by Paskal Technologies Agriculture Cooperative Ltd filed Critical Paskal Technologies Agriculture Cooperative Ltd
Priority to EP17798888.8A priority Critical patent/EP3457835A4/fr
Priority to RU2018144365A priority patent/RU2018144365A/ru
Priority to CA3024419A priority patent/CA3024419C/fr
Publication of WO2017199253A1 publication Critical patent/WO2017199253A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
    • G06Q50/02—Agriculture; Fishing; Forestry; Mining
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G7/00—Botany in general
    • A01G7/04—Electric or magnetic or acoustic treatment of plants for promoting growth
    • A01G7/045—Electric or magnetic or acoustic treatment of plants for promoting growth with electric lighting

Definitions

  • the present invention pertains to crop yield forecast system of various fruit and vegetable plants grown for industrial purposes. More particularly, the present invention pertains to system and apparatus which are capable of measuring the vegetative and productive crop growth components, calculating the instantaneous yield and generating a prediction of yield forecast for several weeks ahead.
  • the system is configured to calculate and determine the completing amount of artificial radiation which is required to obtain an optimal crop yield for a certain type of plant in a certain area in the greenhouse according to the measured natural radiation.
  • plants weight is continuously measured with weighing units trellising from an elevated wire and connected to the plants in a greenhouse.
  • the weighing units wirelessly transmit the measurement data to a base station in the greenhouse that transmits them to a server for processing and analysis.
  • Noise filtering and data analysis are carried out with dedicated filtering and analysis tools. The results may also be directly sent to the grower through the web.
  • the total measured fresh weight enables providing information on growth rate, identifying local deviations from normal growth, guiding towards a proper growth strategy and making instant comparison between current growth supporting technologies.
  • the total measured fresh weight of the plants is not sufficient for assessing crop yield.
  • the particular efficiency of lighting on crop yield is not fully investigated in the weight measuring system described above. It is, therefore, an object of the present invention to adjust the weight measuring system described above to weigh and calculate the distribution between total vegetative and productive crop growth components in plants in a greenhouse. It is yet another object of the present invention that the calculation and weighing of the vegetative and productive components is done in real-time.
  • this adjusted weight measuring system predicts crop yield.
  • this weight measuring system assesses the quantitative contribution of natural light and artificial lighting to enhanced photosynthesis in crops and optimizes it for greater crop yield per energy unit invested.
  • the adjusted weight measuring system makes the use of lighting more efficient in terms of energy saving and increased crop yield.
  • the present invention provides a system for determining the ratio between the Vegetative Calculated Component (VCC) and Productive Calculated Component (PCC) that make the Total Measured Fresh Weight (TMFW) of plants in real-time. Further, the system of the present invention enables predicting and forecasting the Actual Crop Yield (ACY) and better allocation of resources for achieving the predicted ACY. It should be pointed out that the TMFW represents that fresh weight, which is added to the plant and not the total weight of the plant after the addition of that fresh weight.
  • the ACY represents the current yield that is forecasted for a certain point in time ahead, e.g., 3-4 weeks ahead, for a particular greenhouse under certain conditions and based on measured growth of the plants.
  • the system of the present invention comprises a dedicated filter for identifying variations in plants weight, for example, measured weight losses.
  • losses in plants weight arise from harvesting or deleafing, i.e., leaf removal, and distinguishing between PCC and VCC weight is assisted by dedicating separate times, e.g., days or hours during a day, for the two activities.
  • the present invention provides a system for predicting the actual crop yield, ACY, that comprises:
  • each one of the weighing units is attached to a single plant or group of plants and comprises means for weighing the plant or group of plants, the weighing units are trellising from an elevated wire on one end and connected to the top end of the plant or group of plants on the opposite end;
  • a communication network comprising means for coimmmicating the weight of the plant or group of plants from the weighing units to a central unit;
  • Such central unit comprises:
  • a dedicated filter for identifying variations in plants weight, for example, measured weight losses.
  • losses in plants weight arise from harvesting or deleafing, and distinguishing between PCC and VCC weight is assisted by dedicating separate times, e.g., days or hours during a day, for the two activities;
  • VCC Vegetative Calculated Component
  • PCC Productive Calculated Component
  • the system of the present invention is configured to guide the grower on the intensity of artificial light and period of time of exposure of the plants for optimal ACY ; Particularly, such guidance is useful in transition seasons with lower exposure to natural outside light radiation;
  • a software tool component that is configured to generate a prior forecast of the total radiation, which will be applied in a specific greenhouse at a certain area on specific plant species in the greenhouse during its growing time period, and perform a further characterization and determination of its relation to other important parameters such as its accumulated plant crop performance during the growing time period; and • a software tool component that is configured to perform a prediction and forecasting of Actual Crop Yield (ACY) for a future period of time based on measured TMFW (total measured fresh weight) of plants, VCC (vegetative calculated component) and PCC (productive calculated component) and allocation of resources for obtaining the predicted ACY.
  • ACY Actual Crop Yield
  • the central unit may comprise, a dedicated feedback control unit for optimization of the forecasted ACY that comprises:
  • the data comprises the measured plants weighing data, including the extracted VCC, PCC and TMFW parameters, the actual and forecasted radiation and ACY data of the greenhouse including other local environmental conditions and general climate required data obtained by the central unit from the various sensors which are distributed inside the greenhouse or from external general web and other external databases; and
  • an optimization software tool component for the forecasted ACY and optimization of ACY distribution inside the greenhouse for a specific plant located in a specific area inside the greenhouse.
  • This software tool component is configured to generate a set of executable actions and recommendations for correction and modification of various control parameters inside the greenhouse. Examples of such parameters are the greenhouse recommended distribution of environmental temperature and humidity, intensity of artificial radiation and recommended distribution inside the greenhouse for a given artificial light source configuration.
  • important parameters which affect the plant growth such as plant irrigation are also collected and processed by the optimization software tool for determining the correlation between optimal crop yield and light radiation.
  • Such distribution is configured in conjunction with the natural light source.
  • Optional artificial light radiation source apparatuses are configured, for example, in manual or automatic modes of control.
  • the apparatuses are configured to communicate and be controlled by the central unit
  • the dedicated filter of the system of the present invention is further configured to calculate the contribution of light energy from natural and artificial sources to crop yield.
  • the system of the present invention is configured to guide the grower on the intensity of artificial light and period of time of exposure of the plants for optimal ACY. Such guidance is particularly useful in transition seasons with lower exposure to natural outside light radiation.
  • the central unit of the system of the present invention is also configured to predict future yield (ACY) in any particular greenhouse with known climate and environmental and growth conditions.
  • the central unit of the system of the present invention is also configured to provide a forecast of ACY based on accumulated data from measurements made in a particular greenhouse and for a variety of crops, e.g., tomato, cucumber.
  • the system of the present invention is also configured to process and analyze data from a plurality of greenhouses in different climates and environment and growth conditions and provide at least short term forecast for a particular greenhouse based on such analysis.
  • the short term may be between three to four weeks ahead based on accumulated previous data obtained from a specific greenhouse and/or a plurality of greenhouses in different climate and environmental growth conditions in different parts of the world and in different seasons of the year.
  • the forecasting of ACY with the system of the present invention enables to make more efficient use of the resources allocated for a grower for the preparation and marketing of crops. This way, the grower can minimize expenses and maximize profits. Therefore, in one embodiment, the present invention provides a system and method for planning cost- effective management of a greenhouse including scheduling of operations intended for the planting, growing, harvesting, packing, shipping and marketing of selected amount of crops in a selected season of a particular year.
  • the weighing measuring system is configured to make use of lighting more efficient in terms of energy saving and increased crop yield.
  • the weighing measuring system is further configured to evaluate the forecast of the radiation and accordingly the system adjusts and optimizes the use of lighting mote efficiently in terms of energy saving and increased crop yield.
  • the system including the weighing measuring system and the system for determining the radiation required and prediction of the actual crop yield is utilized for planning cost-effective management of a greenhouse including scheduling of operations intended for the planting, growing, harvesting, picking, shipping and marketing of selected amount of crops in a selected season of a particular year.
  • the crop forecast generation procedure is a relatively complex task, however its accuracy and reliability involve a detailed knowledge of the development and growing process of various plants species which are grown in greenhouses.
  • the first elementary process is data collection of the relevant measured parameters related to specific plant species and its specific growing process. This involves calculations, analysis and extraction of mathematical relations between these parameters and other parameters that affect the plant growing process. Such are the calculated vegetative and productive components VCC and PCC, respectively.
  • the second elementary process is the preliminary forecast of the total radiation intensity, which is applied on specific plant species in a certain area in the greenhouse throughout its growth period, and further characterization and determination of its relation to other parameters such as accumulated plant crop performance throughout its growth period.
  • the first elementary process involves characterization of the vegetative system, including a collection of the required data and important relations between the various growing parameters.
  • This task involves the determination of the relation and dependencies between accumulations of the total measured fresh weight with respect to the climate conditions and particularly the natural and artificial lighting radiation intensities, which are applied on the plants throughout their growth period. Specific available technological growth conditions in a certain greenhouse are also considered.
  • the related analysis is performed separately for each specific plant species, taking into account its specific growth seasons and other possible local and global environmental conditions and parameters that affect the growth conditions.
  • the collected data is taken over the plant total growth period by a PGA (Plant Growth Analysis) data collection system.
  • the first elementary process and related aspects are involved in the determination of the relations between the accumulation of vegetative fresh weight (TMFW) and crop (PCC) parameters.
  • the relation between the vegetative fresh weight, TMFW, and accumulated variable productive calculated component, PCC enables to predict the crop yield throughout the growth period in a particular season.
  • the relation between the vegetative fresh weight, TMFW, and the accumulated variable productive calculated component, PCC is calculated prior to the forecast procedure. The reason for this is that the relation between PCC and TMFW is believed to be related to the specific plant species and growing technologies which are employed by the grower in a certain greenhouse.
  • the calculation of the accumulated fresh material is determined by measurements of the crop reduction which is further used to extract the vegetative component (VCC), or alternatively can be done by direct measurement of crop weight during the picking period.
  • VCC vegetative component
  • Crop forecast is important to the growers and also marketing companies, where the required forecast time period varies in accordance with their requirements.
  • the experimental forecast of a specific plant crop is likely to be effective for a time period of about two to three weeks.
  • the light radiation intensity for a certain area in a greenhouse is the most important parameter which is used for the ACY forecast. This parameter is believed to be most important due to its effective contribution to the plants growth process, and is additionally considered as a fundamental parameter that affects crop accumulated rate during plant growth season.
  • the radiation forecast is measured by meteorological stations for long periods of time that may extend to five weeks ahead. Alternatively it can be evaluated from average radiation values which are calculated from the local radiation measurements data performed in a specific greenhouse location during several years.
  • the greenhouse local temperature is considered to be another highly important parameter in the growing process in greenhouses. However, in many greenhouses that employ advanced growing technologies, the most important contributors to the temperature variations are the external radiation sources during daylight hours and the heating system that manage and control the growing workforce. This is due to the fact that practically, in most cases, during the growth season, the temperature generated by the dedicated heating sources inside a greenhouse is sustained in a specific constant value with rather very low temperature variations.
  • the accumulated fresh material factor which is sensitive to temperature variations that result from the said greenhouse heating source temperature, is relatively stable and considered to be less relevant to the crop forecast during growth season.
  • the heating applied to the greenhouse is considered to be the most important factor that impacts temperature variations and accordingly the growth factor variations associated with this parameter.
  • the accumulated radiation data outside and inside a specific greenhouse were measured in units of Mole m 2 (area (square meter)).
  • the radiation sources comprised the external natural radiation and the internal artificial radiation, when applied.
  • several other parameters were considered for each specific greenhouse out of the tested ones. These parameters included the greenhouse specific location, its geometrical shape, its type of cover and the specifications and type of the internal light radiation which were used by the grower for this specific greenhouse.
  • TMFW was calculated. Furthermore, to eliminate the inherent experimental variations in this relation which are pronounced over different growth time periods, the corresponding relation is recalculated separately all over again for each one of the different experiment time periods. 4.
  • the mathematical relation between the fresh weight and crop yield was calculated for every greenhouse according to its particular specifications, e.g., size, shading, specific location, geometrical shape and cover type and growth conditions, exposure to natural radiation, application of artificial radiation, heating, humidity. As in the previous case, the corresponding relation is recalculated all over again for each one of the different experiment time periods.
  • a time forecast for the crop yield and fresh accumulated weight is generated based on the extracted mathematical relations including the related polynomial fit coefficients between the radiation intensity and fresh weight and fresh weight and crop yield, with the relations extracted in steps 3 and 4.
  • the yield and forecasts are considered to be accurate and valid over a time period of several weeks ahead.
  • the present invention provides a method for forecasting crop yield in greenhouses according to the following steps:
  • each of the weighing units is attached to a single plant or group of plants and comprises means for weighing the plant or group of plants, the weighing units are trellis ing from an elevated wire at one end and connected to the top end of the plant or group of plants at the opposite end;
  • the communicating network comprising means for communicating weight of the plant or group of plants from the weighing units to a central unit;
  • the method may comprise collecting data on specifications and type of the artificial light radiation.
  • the method may comprise modifying environmental condition parameters, intensity of artificial radiation source and distribution for optimizing future crop yield in the greenhouse.
  • Figs. 1-8 Exemplary material and related embodiments of the present invention are schematically illustrated in Figs. 1-8. These figures are for illustration purposes and are not intended to be exhaustive or to limit the invention to the below description in any form.
  • a detailed example and implantation of the present forecast method is provided in the detailed description of Figs.6-8. In this example, the forecast method is employed for tomato plant grown in a one particular experiment greenhouse. Brief Description of the Drawings
  • Fig. 1 shows the measured total fresh weight of a plant (in grams) over a period of about four months.
  • Figs.2A-B show the accumulated TMFW and crop yield, respectively, in a greenhouse that is divided to "West” and "East” sections.
  • Figs.3A-B show the measured crop yield (solid squares), correlating the ACY values with the TMFW values with polynomial fitting equation (solid line) for the East and West sides, respectively.
  • Fig.4 shows the natural light radiation (left y-axis) and TMFW (right y-axis) throughout growth time period of about 8-9 months.
  • Fig.5 shows the measured daily growth, presented in units of gr/m 2 , during a period of about one month of December, demonstrating the contributing factors of outside natural light and artificial radiation components (HPS).
  • Fig.6 shows the experimental results of the total radiation intensity versus the accumulated fresh weight for an experimented certain greenhouse and tomato crop with a quadratic correlation polynomial fit graph.
  • Fig.7 shows the experimental results of the yield versus fresh weight measured for a tomato crop with a quadratic correlation polynomial fit graph.
  • Figs.8A-B show the forecast calculation tables derived for tomato crop data presented in Figs.6-7, where (A) shows a calculation of fresh weight resulting from the applied radiation (natural and artificial) intensity and (B) shows forecast calculation of the yield resulting from the fresh weight data.
  • Fig. 1 shows the measured total vegetative fresh weight of a plant (in grams) over a period of about four months.
  • the observed fluctuations in the graph make it possible to calculate the temporary PCC (productive calculated component) at each point in time by the filter.
  • the filter is capable of differentiating between weight losses resulting form harvesting, e.g. crop or fruit, and deleafing, i.e., leaf removal. This capability of the filter is based on the inherent difference between the weights of leaves and fruits. Accordingly, the change monitored by the filter is also translated to actual activity carried out at the greenhouse, i.e., picking or deleafing. Then the data received is related to the proper variable, namely PCC for picking and VCC for deleafing.
  • FIG.2A shows the accumulated TMFW in a greenhouse that is divided to "West” and "East” sections, where the yield, shown in Fig. 2B, is calculated from the TMFW graph in Fig.1. As can be seen from this graph, there is a slight difference in the accumulated TMFW between the two sections with a minor higher TMFW values shown at the West section.
  • Fig.2B shows corresponding crop yield or the accumulated productive (PCC) and vegetative (VCC) calculated components for the two sections, West and East, correlated with the accumulated TMFW of the plants in the lower graph in Fig.2A.
  • the PCC values are calculated analytically utilizing the filter that distinguishes between the productive and vegetative calculated components, marked as PCC and VCC respectively, or are calculated by the grower over the same period of time.
  • the accumulated PCC, and hence the crop yield, is higher for the East section relative to the West section, although both show consistent positive increase in TMFW with time.
  • This spatial division exemplifies the capability of the system and filter to track and identify trends and non-uniformities in yield in the greenhouse.
  • Figs.3A-B show the measured crop yield (solid squares) that correlates with the PCC values, with respect to TMFW, with the polynomial fitting equation (solid line) that is constructed according to measured results for the East and West sides, respectively.
  • the measurements of plant TMFW and calculations of PCC generate the relevant correlation curve that is typical for a particular greenhouse or a particular section in the greenhouse in which the measurements were taken for a specific type of crop.
  • the yield is calculated as a function of the TMFW of the plants in units of Kg per area (square meter).
  • the polynomial equation is the correlation function with appropriate coefficients for each power, which are produced by the filter for the particular measured results.
  • the fitted polynomial equation enables to forecast future ACY (actual crop yield) according to given measured data on TMFW and calculated VCC (vegetative calculated component). This is because the curves slopes enable identifying the characteristics of the greenhouse with a ratio between TMFW and PCC that is consistent over short periods of time. Accordingly, the ACY for the particular greenhouse may be forecasted for further growing events. Such curve continuously updates with the accumulation of data on TMFW and PCC and thus may be termed self-learning curve.
  • the crop yield forecasting for example over a period of 3 to 4 weeks, is done in relation to climate data and growing conditions, light radiation in particular, which are processed by the system and reflected in the typical self-learning curve of a greenhouse or part of its area.
  • TMFW For the evaluation of the effect of natural outside light radiation on TMFW, the relation between the TMFW and light radiation is measured for a plurality of events in a greenhouse and selected areas in it.
  • Fig.4 shows the natural light radiation (left y-axis) and TMFW (right y-axis) for a growing time period of about 8-9 months.
  • the radiation energy is provided by the outside natural light radiation, presented in units of mega joule per area, i.e. square meter, and the plant growth, reflected in TMFW of the plants, is presented in units of Kg per area.
  • Practically a complete correspondence is observed between the two and the obtained curve is considered as a characteristic for the particular greenhouse in which measurements are taken for a certain type of plant from a variety of plants e.g., a certain type of vegetable crop , tomato, cucumber, which is weighed, and their combination.
  • the polynomial equation obtained for the measured TMFW of plants and the crop yield as shown in the graph in Figs. 3A-B enable forecasting the yield for a period of time ahead, for example a time period of three weeks.
  • Such equation is characteristic of the greenhouse, in which the measurements are taken, the variety, i.e., type of crop, e.g. tomato, cucumber, which is weighed, and their combination, under known conditions of outside light radiation.
  • This contribution was calculated by multiplying the intensity of natural light radiation with the light-to-growth coefficient. Quantitative evaluation of the contribution of artificial lighting to growth was determined according to the growth rate for any selected area and period of time using the weight measuring units distributed in the greenhouse and by subtracting the calculated contribution of natural outside light radiation absorbed from the measured growth.
  • Fig.5 shows the measured daily growth, presented in units of gr/m 2 , during a period of about one month of December, showing the outside radiation natural light and artificial (HPS) radiation contributing factors.
  • a particular area unit was determined and weight measuring units were used to provide growth rate data in a selected period of time. This time of year was selected to examine the effect of artificial lighting due to the lower exposure to natural light.
  • the top curve shows the growth of TMFW of plants obtained from exposure to natural outside light radiation and artificial light sources; the lower curve shows the growth calculated for the contribution of natural outside light radiation; and the middle curve shows the growth calculated for the contribution of artificial lighting (HPS).
  • the forecast method further comprises steps 3-5, which are applied and presented in Figs. 6-7 and the equations below.
  • Fig. 6 shows the experimental relation between the radiation and the accumulated fresh weight of a tomato crop with a quadratic polynomial fit graph.
  • the insert of the graph shows the specific quadratic polynomial equation including its specific extracted linear and quadratic coefficients and the related fit accuracy factor, R.
  • the quadratic polynomial fitting equation yields the following relation between the radiation and the accumulated fresh weight of a tomato crop:
  • Fig.7 shows the experimental relation between the yield and the fresh weight measured for tomato crop with a quadratic correlation polynomial fit graph.
  • the insert in the graph shows the specific polynomial equation including the specific extracted linear and quadratic coefficients and the related fit accuracy factor, R.
  • the quadratic polynomial fit equation yields the following relation between the yield and the fresh weight measured for tomato crop:
  • Figs.8A-B show the forecast calculation tables derived from tomato growth data presented in Figs.6-7, where (A) shows calculation of the fresh weight resulting from the applied light radiation intensity and (B) shows a forecast calculation of the yield resulting from the fresh weight data.
  • a forecast for the tomato crop yield is derived from the polynomial relation obtained in steps 3 and 4 for the tomato crop data. This enables to evaluate the total light radiation conditions as well. This is done as follows:
  • the fresh weight can be calculated for any value of light radiation conditions, as shown in Fig.8A. Since the radiation is measured in mole-m 2 and the fresh weight is calculated in Kg-m 2 , the coefficients obtained are pure numbers and may be used to obtain the polynomial fit equation that forecasts the yield as shown in Fig.8B.
  • the yield can be forecasted for any fresh weight values and hence light radiation conditions, as shown in Fig. 8B.
  • a forecast of the yield under certain light conditions can be derived for several weeks ahead.
  • This method can be applied experimentally for different types of plants, and has been found to be relatively accurate and valid over growing time periods of several weeks, generally 3-4 weeks. Further, it can be re implemented after such time period again. Moreover, this method can also be implemented constantly under greenhouse conditions to produce an inline monitor of the forecast crop yield 3-4 weeks ahead to the grower, and enable him to optimize the radiation, temperature and all other growth conditions that sustain a relatively high yield of crop production for a variety of plant types, fruits and vegetables.
  • the system of the present invention provides forecasting of ACY (actual crop yield) for future periods of time based on measured data. Furthermore, the system of the present invention provides guidance on how much artificial lighting should be applied to obtain optimal TMFW of plants and crop yield based on the relation between previously measured natural outside light radiation and TMFW of plants. This is particularly useful for seasons with lower exposure to natural outside light radiation, where efficient use of energy resources is required, e.g., transition seasons. The recommendation for the amount of artificial lighting to be used is particularly important for places where such transition seasons take a substantial part of the year, thus requiring a more efficient use of artificial lighting and energy spending.

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Abstract

La présente invention concerne un système et un procédé de prévision du rendement des cultures de différentes plantes à fruits et à légumes cultivées à des fins industrielles. Le système prévoit le rendement réel des cultures, à savoir le rendement présent et futur, en tenant compte de l'efficacité particulière d'intensités de rayonnement prévues et réelles d'un éclairage naturel et éventuellement d'un éclairage artificiel appliqués à la serre sur une espèce végétale spécifique. Le système et le procédé sont utilisés pour planifier notamment la gestion rentable d'une serre, en ce compris la programmation d'opérations concernant la plantation, la croissance, la récolte, le ramassage, l'expédition et la commercialisation de quantités sélectionnées de produits agricoles au cours d'une saison choisie d'une année donnée.
PCT/IL2017/050552 2016-05-18 2017-05-17 Prévision de rendement et efficacité d'utilisation de la lumière Ceased WO2017199253A1 (fr)

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EP17798888.8A EP3457835A4 (fr) 2016-05-18 2017-05-17 Prévision de rendement et efficacité d'utilisation de la lumière
RU2018144365A RU2018144365A (ru) 2016-05-18 2017-05-17 Прогноз урожая и эффективность использования света
CA3024419A CA3024419C (fr) 2016-05-18 2017-05-17 Prevision de rendement et efficacite d'utilisation de la lumiere

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US62/337,923 2016-05-18

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CN112115414B (zh) * 2020-07-16 2023-10-24 华东师范大学 一种广布种分布范围的预测方法

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CA3024419A1 (fr) 2017-11-23
RU2018144365A3 (fr) 2020-09-02

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