Prediction of Seed Vertical distribution of Wheat (cv.Sardari) in Soil use of SeedChaser model

Document Type : Research Paper

Author

Assistant Professor, Department of Agriculture, Payame Noor University, Bookan, Iran

Abstract

Vertical distribution of seed, Plant residual, Granule fertilizers and other chemical complexes in depth of soil influence of tillage with various implements is one of the important issues in agronomy. So, an experiment done with SeedChaser model to recognize the patterns of seed vertical distribution in soil (0-18 cm) with 15 types of tillage implements in simulation study and 9 of ones in field experiment. Results showed that patterns of seed vertical distribution were different and it depends on infiltration depth of implements in soil, curve degree of knife and soil bulk of be moved. Spader, Rigide tine, moldboard, and rotovator buried seeds in below 10 cm depth of soil, although Rotary hoe, Drill, Residual management, Para plow and Strip tillage implements buried seeds in shallow depths (0-2 cm) and was between 2-8 cm in others. Also, results released that critical depth for D90 (90% of seeds in a certain depth) ranged 14-18 cm for Moldboard, Rotovator and Spader while was 0-10 cm for other implements. Prediction results recognized that the model predicted seed vertical distribution in a good mood which the highest dispersal related to chisel plow and the lowest observed in tillage with Moldboard.

Keywords


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