Development and application of a variable rate fertilizer applicator for precision agriculture

Zhang ShuHui; Ma ChengLin; Wu CaiCong; Du QiaoLing; Han YunXia; Zhao XingMing

Transactions of the Chinese Society of Agricultural Engineering 19(1): 129-131

2003


Accession: 003707966

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Abstract
In this paper, a prototype of a variable rate fertilizer applicator for precision agriculture was constructed. The applicator is based on DGPS satellite positioning principle. It combines GPS, GIS and DDG together to make fertilizer application decisions and to input the rate of fertilizer application into an IC card. When the applicator works in the field, the position data received by GPS, which is equipped on the applicator, stimulates the fertilizer application decision command in the IC card. The command then controls the rotational velocity of the fertilizer shaft through a single chip computer to realize the variable fertilizer application rate. Results in the field show that the fertilizer applicator is competent for variable fertilizer application rate for precision agriculture.