A Neural Network and Electrohydraulic Based Variable Rate Fertilizer Application System

1998 ◽  
Author(s):  
D. Mourre ◽  
R. T. Burton ◽  
P. R. Ukrainetz
Keyword(s):  
Neural Network ◽  
Fertilizer Application ◽  
Variable Rate ◽  
Application System

A Variable Rate Fertilization System Based on ARM and its Realization

2013 ◽  
Vol 303-306 ◽  
pp. 1465-1469
Author(s):  
Ying Jie Yu ◽  
Zhen Yang Ge ◽  
Shu Hui Zhang
Keyword(s):  
Rotational Speed ◽  
Fertilizer Application ◽  
Stepper Motor ◽  
Variable Rate ◽  
Application System ◽  
Automatic Mode ◽  
Arm Microprocessor ◽  
Photoelectric Encoder ◽  
Fertilization System ◽  
Manual Mode

A variable rate fertilizer application system with ARM microprocessor as control core was developed. The structure and realization principle of the system were introduced. The system consists of two velocity sensors of photoelectric encoder and proximity transducer, an ARM controller, and an executive unit of stepper motor. The system has automatic and manual variable rate fertilization modes. In the automatic mode, the system can be positioned automatically without GPS, and controls the stepping motor’s rotational speed according to the fertilizing amount in different grid to realize variable rate fertilization. In the manual mode, the controller combines the fertilizing amount in different grid input manually through the keys with the velocity of the applicator, and calculates the stepping motor’s rotational speed to realize the variable rate fertilizer application. The applicator working status can be seen in LCD on the controller. The experimental results show that the system can work properly.

Nozzles for Variable Rate Fertilizer Application

2008 ◽  
Author(s):  
Geetika Dilawari ◽  
Randal K Taylor ◽  
John B Solie ◽  
Praveen Bennur
Keyword(s):  
Fertilizer Application ◽  
Variable Rate

scholarly journals Erratum: Van Loon, J., et al. Precision for Smallholder Farmers: A Small-Scale-Tailored Variable Rate Fertilizer Application Kit. Agriculture, 2018, 8, 48

Agriculture ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 258
Author(s):  
Jelle Van Loon ◽  
Alicia B. Speratti ◽  
Louis Gabarra ◽  
Bram Govaerts
Keyword(s):  
Smallholder Farmers ◽  
Fertilizer Application ◽  
Small Scale ◽  
Variable Rate

The authors wish to correct the following erratum in this paper [...]

Mapping Soil Test Phosphorus and Potassium for Variable-Rate Fertilizer Application

jpa ◽  
1994 ◽  
Vol 7 (4) ◽  
pp. 441-448 ◽  
Author(s):  
N. C. Wollenhaupt ◽  
R. P. Wolkowski ◽  
M. K. Clayton
Keyword(s):  
Fertilizer Application ◽  
Soil Test ◽  
Variable Rate ◽  
Phosphorus And Potassium ◽  
Soil Test Phosphorus
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