Simulation and assessment of planting date and climatic effects on Soybean (Glycine max L.) yields in Thailand using GLYCIM

Simulation and assessment of planting date and climatic effects on Soybean (Glycine max L.) yields in Thailand using GLYCIM

Authors

  • Suresh Lokhande Mississippi State Univ.
  • Dennis Timlin USDA-ARS
  • Vilas M Salokhe AIT, Thailand
  • Vangimalla R Reddy USDA-ARS

Keywords:

Crop model, Tropics, Climate, Soil, GLYCIM

Abstract

The soybean model GLYCIM was used to assess soybean yield potential as a function of planting date, soil type and cultivar for growing conditions in northeastern Thailand. A study was conducted at the Asian Institute of Technology (AIT), Pathumthani, Thailand in 2005 to calibrate and validate GLYCIM for Thailand conditions. The study used three planting dates and three cultivars commonly used in Thailand, CM-2, CM-60 and SJ-5. The model validation results indicated a good agreement between simulated and observed data for phenology, growth and yield of soybean, and demonstrated the potential of the model for assessment purposes. Simulations were carried out to determine yield ariations due to seven planting dates, three soil types and three cultivars using 37 years of measured weather data for two locations, Sukhothai and Khonkaen in the northern part of Thailand. Delayed (middle of June to end of June) planting showed a reduction in yield potential ranging from 7% to 35% due to a shorter growing season and increased water stress. The clay and silt loam soils showed higher yield potential compared to the sandy loam soil. There were no differences among the three cultivars and no significant interaction of cultivar with planting date or soil .

Author Biographies

Suresh Lokhande, Mississippi State Univ.

Department of Plants and Soil Sciences, Mississippi State University Starkville, MS-39762 Phone - 662-617-3911

Dennis Timlin, USDA-ARS

Soil Scientist USDA-ARS Crop Systems and Global Change Laboratory Bldg 001, Rm 342 BARC-W 10300 Baltimore Ave Beltsville, MD 20705 301-504-6255 fax 301-504-5823

Vilas M Salokhe, AIT, Thailand

Professor Agricultural Systems and Engineering, SERD, AIT, Pathumthani, Thailand 12120

Vangimalla R Reddy, USDA-ARS

Plant Physiologist, Research Leader USDA-ARS Crop Systems and Global Change Laboratory Bldg 001, Rm 342 BARC-W 10300 Baltimore Ave

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Published

23-12-2013

How to Cite

Lokhande, S., Timlin, D., Salokhe, V. M., & Reddy, V. R. (2013). Simulation and assessment of planting date and climatic effects on Soybean (Glycine max L.) yields in Thailand using GLYCIM. Journal of Tropical Agriculture, 51(1), 30–41. Retrieved from https://jtropag.kau.in/index.php/ojs2/article/view/279

Issue

Section

Regular papers

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