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Evaluation of CropSyst Model for Simulating Green Area Index, Soil Water and Yield of Psyllium in Hyper Arid Partially Irrigated Zone of Rajasthan

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Title Evaluation of CropSyst Model for Simulating Green Area Index, Soil Water and Yield of Psyllium in Hyper Arid Partially Irrigated Zone of Rajasthan
 
Creator Soni, Moti Lal
 
Contributor Yadava, Narendra Dev
Jat, Sita Ram
Gulati, I. L.
Rathore, Vijay Singh
Meel, Birbal
Kumawat, Amit
Glazirina, Mariya
 
Subject validation
cropsyst model
psyllium
ignp stage-ii
 
Description Cropping systems model (CropSyst) was calibrated using the experimental data
of crop parameters, soil profile data and observed daily weather data of experimental
site for 2012-13 and validated the experimental data of crop growth, yield parameters
and soil moisture for 2013-14 for psyllium crop grown at farmer’s field in IGNP stage-II
of Bikaner. The results of the present study showed that the CropSyst model calibrated
seed yield, above ground biomass and soil moisture reasonably well. The simulated
seed yield of psyllium (429 kg ha-1) matched well with the observed yield (462 kg ha-1)
with relative error of 7.1%. The observed above ground biomass (AGB) at harvest (1085
kg ha-1) also matched with simulated AGB (997 kg ha-1) with relative error of 8.1%.
During validation of the model during 2013-14, prediction of simulated seed yield (597
kg ha-1) was very good and matched well with the observed seed yield (557 kg ha-1)
with relative errors of 7.3%. However, the simulated AGB (1894 kg ha-1) of psyllium
was over predicted as compared to observed AGB (1395 kg ha-1) with relative errors of
35.8%. The simulated green area index (GAI) was not properly captured by the model.
The simulated N-uptake (34.0 kg ha-1) was moderately higher than observed N-uptake
(26.0 kg ha-1). Simulated soil moisture was well predicted and excellent matched with
observed values in most of the layers. About half of total water applied lost by deep
drainage with water productivity of 0.17 kg m-3.
 
Date 2016-12-31
2017-02-13T17:37:03Z
2017-02-13T17:37:03Z
 
Type Journal Article
 
Identifier https://mel.cgiar.org/reporting/download/hash/nDh890QZ
Moti Lal Soni, Narendra Dev Yadava, Sita Ram Jat, I. L. Gulati, Vijay Singh Rathore, Birbal Meel, Amit Kumawat, Mariya Glazirina. (31/12/2016). Evaluation of CropSyst Model for Simulating Green Area Index, Soil Water and Yield of Psyllium in Hyper Arid Partially Irrigated Zone of Rajasthan. Annals of Arid Zone, 55 (3&4), pp. 129-138.
https://hdl.handle.net/20.500.11766/5746
Open access
 
Language en
 
Rights CC-BY-4.0
 
Format PDF
 
Publisher The Arid Zone Research Association of India
 
Source Annals of Arid Zone;55,Pagination 129-138