Decision support system for greenhouse seedling production

Gupta, Manoj Kumar; Samuel, D. V. K.; Sirohi, N.P.S.

doi:10.1016/j.compag.2010.05.009

Cited by 17 publications

(8 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Considering the process of producing vegetables as a whole, the production stage of seedlings is one of the most important because good quality seedlings enable plants to express their genetic potential and directly influence productivity [1,2].…”

Section: Introduction mentioning

confidence: 99%

See 1 more Smart Citation

Automated Microsprinkler to Determine the Crop Coefficient in Tomato Seedling Cultivated with Hydroretentor

Aleman¹,

Bastos²

2018

JAST-B

View full text Add to dashboard Cite

The objective of this study was to obtain the weekly crop coefficient (Kc) for tomato seedlings in substratum with waterproofing polymer and irrigated by automatic system of localized irrigation. The experiment was conducted in an agricultural greenhouse located in the irrigation experimental area of the Department of Agricultural Engineering, Viçosa-MG, Brazil. The crop coefficient (Kc) for tomato seedlings was obtained for the conditions of the experiment (in plastic trays of 128 cells, in greenhouse, in Viçosa-MG, for the spring/summer season), using the substrates with and without hydrogel. The irrigation system was micro sprinkler, consisting of four emitters per tray of seedlings, so that each tray constitutes an individualized experimental unit. The method for estimation of reference evapotranspiration was Penman-Monteith FAO56. The weighing lysimetry was used to obtain the variation of the tray mass from the evapotranspiration of the culture. Two consecutive daily weights, spaced at intervals of 60 min (during the morning shift), were performed for five sample units (SU) arranged in a completely randomized design in the greenhouse. Each SU was composed of a tray of 128 cells. The values of Kc obtained were used to calibrate the crop evapotranspiration (ETc) estimates used in the later stages. Weekly Kc values were generated. Irrigation was managed so that the crop did not undergo water stress during the moulting phase. For the conditions tested it was possible to obtain Kc values between 0.72 and 2.86 for the substrate without hydrogel and 0.81 to 3.46 for the substrate with hydrogel. It should be considered that the production stage of seedlings is very demanding in water and in protected environment conditions it is possible to obtain high Kc values.

show abstract

Section: Introduction mentioning

confidence: 99%

“…Water management also involves knowing the behavior of the irrigation system used. In this way one can determine the most appropriate moment, in which form and the amount of water to be supplied to the crop [2].…”

Section: Introduction mentioning

confidence: 99%

Automated Microsprinkler to Determine the Crop Coefficient in Tomato Seedling Cultivated with Hydroretentor

Aleman¹,

Bastos²

2018

JAST-B

View full text Add to dashboard Cite

show abstract

“…The equation was further used to make a decision support system [5] for greenhouse tomato seedling production. …”

Section: Tomato Seed Emergencementioning

confidence: 99%

“…The present study was undertaken to establish mathematical relations for greenhouse tomato seedling production under controlled conditions. The models were further used to develop a decision support system for greenhouse tomato seedling production [5].…”

Section: Introductionmentioning

confidence: 99%

Modeling of Tomato Seedling Growth in Greenhouse

et al. 2012

Self Cite

View full text Add to dashboard Cite

This study was undertaken to model the growth of tomato seedlings under greenhouse conditions. The microenvironment of the seedlings (temperature and solar radiation) was correlated with the seedling growth factors. Seed emergence was studied for five different temperatures, and a mathematical model was developed to fit the data to determine relationship between seed germination and soilless medium temperature. In post-emergence phase, a model was developed to estimate the dry weight attained by the seedlings as a function of cumulative heat units (CHU) and cumulative solar radiation (CSR). It was observed that the number of days required for seedling emergence was a function of average root medium temperature. Tomato seedlings emerged in 12 days at average root medium temperature of 20 and 35°C, while the minimum duration was observed to be 7 days at 30°C. The power model represented the seedling emergence behavior with correlation coefficient of 0.96. The growth of tomato seedlings after emergence was affected by both CHU and CSR. Modified Gompertz model explained the post emergence tomato seedling growth under different climatic variations with correlation coefficient from 0.96 to 0.97.

show abstract

“…These systems overcome massive and tedious manual operation and offer greater analysis, operationalization and simplification of the whole assessment process. Hence, they are widely used in production management, business intelligence, and other areas to assist humans in making decisions, such as in aquatic production [31], cucumber production [32], and greenhouse seedling production [33]. The applications of information technology in assessment processes can acquire and transport real-time data on the object of evaluation and significantly increase the timeliness and accuracy of the results.…”

mentioning

confidence: 99%

Design and Implementation of Emergy-Based Sustainability Decision Assessment System for Protected Grape Cultivation

et al. 2015

View full text Add to dashboard Cite

Abstract:The characteristic "high input and output" in protected production has caused some environmental and ecological issues. Hence, emergy-based sustainability assessments are necessary and valuable. However, traditional emergy analysis is time consuming, tedious, and inefficient. Such disadvantages can be addressed by the integration of emergy analysis with information technology. This paper reports the development of the emergy-based sustainability decision assessment system (ESDAS) for protected grape cultivation systems. This system was established by first analyzing the business process, users, and requirements through survey, and the findings of which were used to design the system's function, architecture, database, model base, and knowledge base with a combination of emergy methods. The results showed that ESDAS passed the system test and achieved the real-time calculation of emergy data and the automatization of emergy analysis. Therefore, this research is a beneficial attempt to apply information technology in improving the efficiency of sustainability assessments. The results also revealed that the protected grape cultivation system is characterized by a heavy dependence on purchased and non-renewable resource emergy, lower emergy yield ratio, higher emergy investment rate and environmental loading ratio, and lower emergy sustainability index. Some suggestions were made to improve the sustainability of the protected grape system. OPEN ACCESSSustainability 2015, 7 14003

show abstract

Decision support system for greenhouse seedling production

Cited by 17 publications

References 17 publications

Automated Microsprinkler to Determine the Crop Coefficient in Tomato Seedling Cultivated with Hydroretentor

Automated Microsprinkler to Determine the Crop Coefficient in Tomato Seedling Cultivated with Hydroretentor

Modeling of Tomato Seedling Growth in Greenhouse

Design and Implementation of Emergy-Based Sustainability Decision Assessment System for Protected Grape Cultivation

Contact Info

Product

Resources

About