Yield revenue and optimum N rate prediction for single cross maize on various soils

 

Tasnee Attananthana, Chairoek Suwanaratana1, Taweesak Vearsile,  Sahaschai Kongton2, Ring Meesawat, Pradit Boonampol3, Kukiat Soitong, Arunee charoensaksiri4

  1. Kasetsart University,  Chatujak, Bangkok 10900.
  2. Department of Soil Development,  Chatujak, Bangkok 10900.
  3. Department of Agriculture, Chatujak, Bangkok 10900.
  4. Department of Agriculture Extension, Chatujak, Bangkok 10900.

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It has been well recognized that application of adequate quantity of plant nutrients is the key to increase maize production.  At present, there is only general recommendation for fertilization.  There fore, there is an urgent need to develop site-specific nutrient recommendations (primary N-P-K).  For these processing, soil test kit is developed together with soil identification manual in farmers’ field, with this guide book the user are able to identify the soil used to produce maize permitting proper recommendations.  The CERES MAIZE model of the Decision Support System for Agro-technology Transfer (DSSAT) was used to determine the appropriate nitrogen application for the development of N fertilizer recommendation system of maize.  The suitable rates of Phosphorus and Potassium were derived from PDSS. (Phosphorus Decision Support System) and previous research of DOA.  Extension workers did the transfer technology of the fertilizer recommendation to the farmers.

 

 

fertilization

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