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Design, development and field evaluation of a map-based variable rate granular fertilizer application control system [Farmer]

 

Scientific Article Abstract[1]

Site-specific application of agricultural chemicals including granular fertilizers is an effective way of resource saving and environmental protection. The objective of this research was to develop and to evaluate the performance of a map-based variable rate row crop granular fertilizer placement system. The applicator system consists of a microcontroller for controlling the driving step motor of the fertilizer metering screw and a ground driven wheel integrated with a rotary encoder for the applicator displacement and speed measurement. The results showed that the forward speed and the application rate both had significant effect on precision of application rate, while fertilizer type had no significant effect. The precision of application rate decreased when forward speed and application rate were increased.

 

Αποτέλεσμα εικόνας για Design, development and field evaluation of a map-based variable rate granular fertilizer application control system
Figure 1: Fertilizer hopper and metering screw assembly used for laboratory and field tests.

References

[1]Ehtesham Forouzanmehr, Mohammad Loghavi. Design, development and field evaluation of a map-based variable rate granular fertilizer application control system. Agric Eng Int: CIGR Journal, 2012.

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