A Fertigation Model for Glasshouse Crops Grown in Soil

Voogt, W.; Kipp, J.A.; Graaf, Ron de; Spaans, L.

doi:10.17660/actahortic.2000.537.58

Cited by 25 publications

(25 citation statements)

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“…Based on these parameters, the nutrient requirements of tomatoes [46,47], melons [48], and other horticultural crops have been estimated [49,50]. In some cultivation systems, where the supply of fertilizers is practically equal to plant nutrient uptake (i.e., a soilless culture), uptake concentration has been used to simulate the nutrient requirement of horticultural crops to optimize nutrient management in closed and semi-closed cultivation systems [46,51].…”

Section: Simulation Modelsmentioning

confidence: 99%

“…The decision support system (DSS) Hydrotools is one example of a simulation model developed for the management of soilless cultivations based on the uptake concentration concept [52]. Using the same concept, Dutch researchers have developed the "Fertigation model" to calculate the crop nutrient demand of soil-grown greenhouse crops [49,50].…”

Section: Simulation Modelsmentioning

confidence: 99%

“…An upgraded version of KNS is the N-Expert DSS [127]. However, the most popular approach based on soil testing is probably the "Fertigation Model" [49] initially developed by Dutch researchers [117,119] before being used across Europe. The method has been extensively adopted at the commercial level in the Netherlands [100], and by growers from Mediterranean countries such as Italy [52] and Greece [128].…”

Section: Decision Support Systems Based On Crop Monitoringmentioning

confidence: 99%

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New Trends in the Fertigation Management of Irrigated Vegetable Crops

2017

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Abstract:The use of fertigation, coupled with micro-irrigation, has continued to increase since it was first introduced in horticultural cropping systems. This combination provides a technical solution whereby nutrients and water can be supplied to the crop with high precision in terms of time and space, thereby allowing high nutrient use efficiency. However, the correct estimation of crop nutrient and water needs is fundamental to obtaining precise plant nutrition and high nutrient use efficiency in fertigated cropping systems. This paper illustrates the state-of-the-art and new perspectives for optimal nutrient management of vegetable crops cultivated under fertigation regimes. An overall description is reported for the most valuable technologies and techniques based on simulation models, soil testing, plant testing, and related decision support systems that can be adopted for efficient fertigation. However, it should be highlighted that only a few of the above technologies and techniques are practically available and/or easy to use by growers. Therefore, much more attention should be paid in the future to the transfer of research knowledge to farmers and technical advisors.

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Section: Simulation Modelsmentioning

confidence: 99%

Section: Simulation Modelsmentioning

confidence: 99%

Section: Decision Support Systems Based On Crop Monitoringmentioning

confidence: 99%

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New Trends in the Fertigation Management of Irrigated Vegetable Crops

2017

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“…The crop evapotranspiration (E tot ) is based on the empirical model by De Graaf and Van den Ende (1981), De Graaf (1988, and modifications added later (Voogt et al, 2000). Since in soilless cultivation the surface is almost completely covered, evaporation can be neglected, so transpiration is equal to the evapotranspiration.…”

Section: Crop Demand Transpiration and Growthmentioning

confidence: 99%

'Waterstreams': A Model for Estimation of Crop Water Demand, Water Supply, Salt Accumulation and Discharge for Soilless Crops

Voogt¹,

Swinkels²,

Os³

2012

Acta Hortic.

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Closed growing systems are obligatory for soilless grown greenhouse crops in The Netherlands. It requires water sources of high quality as sodium (Na) accumulation is a potential risk and necessitates frequent discharge, which causes undesirable emission of nutrients and plant protection products. Rainwater as the primary water source, needs to be stored since precipitation and crop demand do not match. Large dry spells will become more frequent due to climatic changes and this necessitates the use of additional water sources, which will differ in quality and costs. The model 'WATERSTREAMS' was developed to estimate the total water demand and waste water flows from greenhouse crops and to optimize between options for water sources, concerning Na accumulation and nutrient emission. It describes all water flows in a greenhouse crop and the growing system. At the same time the Na concentrations in the input flows as well as the uptake are calculated, and if Na accumulates beyond a threshold value, a discharge event is programmed. The model calculations can be used to determine the total water demand from individual crops to clusters of greenhouses, as well as to optimize the size of rainwater collection tanks or the required capacity of additional water sources, using actual, historical or forecasted meteorological data. It also gives insight in the emission quantity. INTRODUCTIONThere are increasing demands of the society on water issues, since water suitable as resource for crop growing becomes more and more scarce and also environmental issues put pressure on sustainable water use in horticulture. There are two main reasons to have more insight in the crop water requirement throughout the year. In the first place, for quality reasons, rainwater is the prevailing water source in The Netherlands. As the precipitation pattern is not matching the crop demand, storage is inevitable. Since supplementary water sources of comparable quality are limited available, optimisation of the size of rainwater collection and capacities of the alternative sources is important for management and economic reasons. Secondly, regulations on the emission of nutrients and plant protection products (PPPs) to the environment force growers even more than already realised, to increase the water use efficiency (WUE).A model describing the crop specific water demand in relation to climatic conditions and water quality aspects can be used to optimize the size of water storage and the input of supplemental water sources in relation to their dynamic availability and can be used to optimise WUE. Existing transpiration models like in INTKAM (Gijzen, 1994) are not suitable, since they need too detailed input data of crop development, which are not always available. Moreover they lack modules for other water flows in the greenhouse and the possibility of taking into account water quality aspects.This paper describes the model WATERSTREAMS which has been developed in the last couple of years. Initially the model was developed for an approach ...

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“…The estimation of transpiration in different species grown in greenhouses has been made, e.g., for ornamentals (Baille et al, 1994), for tomatoes (Stanghellini, 1987;Jemaa et al, 1995), for geranium crops (Montero et al, 2001), for cucumbers (Medrano et al, 2005), for rose cultivation (Suay et al, 2003), for chrysanthemums (Voogt et al, 2000), and for gerbera pots (Schmidt and Exarchou, 2000).…”

Section: Introductionmentioning

confidence: 99%

Evapotranspiration Model Analysis of Crop Water Use in Plant Factory System

Pamungkas¹,

Hatou

Morimoto

2014

Environmental Control in Biology

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An estimation based on a mathematical model to predict hourly evapotranspiration (ET) rates that occur inside a plant factory system was made using the Stanghellini model. The Stanghellini model is considered more appropriate for estimating the rate of ET inside the soilless culture of greenhouse tomatoes. The model requires some climatic data (e.g., solar radiation, air temperature, relative humidity, and wind speed) and plant growth parameters (leaf area index) as inputs. In this study, the observed data were obtained from an experimental greenhouse located at the Ehime University, Japan. The ET rate of tomato (Lycopersicon esculentum Mill.) crop was measured using a weighing method. Accurate determination of ET is essential to precisely compute crop water use and to assist growers for applying good irrigation management. The results showed that solar radiation and vapor pressure deficit are important factors driving the ET rate. The model's output showed good results for determining the ET rate and depicted crop water requirements on an hourly basis.

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A Fertigation Model for Glasshouse Crops Grown in Soil

Cited by 25 publications

References 0 publications

New Trends in the Fertigation Management of Irrigated Vegetable Crops

New Trends in the Fertigation Management of Irrigated Vegetable Crops

'Waterstreams': A Model for Estimation of Crop Water Demand, Water Supply, Salt Accumulation and Discharge for Soilless Crops

Evapotranspiration Model Analysis of Crop Water Use in Plant Factory System

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