Generation digital management map for herbicide application in VRA spraying by using GPS

Mohammad Zamani, D. and Rashidi, M. and Ghareei Khabbaz, B. (2009) Generation digital management map for herbicide application in VRA spraying by using GPS. In: SEAg 2009: Agricultural Technology in a Changing Climate, 13-16 Sep 2009, Brisbane, Australia.

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Abstract

This study was conducted to develop a precision method of application for cyanazine, a pre-emergence herbicide which eventuates to save herbicide and reduce its adverse effects on the environment and agricultural products. For this purpose a digital management map (DMM) using the global positioning system (GPS) for variable rate application (VRA) was generated. Uncultivated field of about 6500 m2 was selected and local and universal transverse mercator (UTM) coordinates of the field were determined using total station surveying equipments and four static GPS receivers. Data processing was performed using a personal computer equipped with COMPASS software. Soil characteristics were determined by sampling and analyzing these samples. By considering manufacture recommendations for herbicide application based on soil organic matter content (OMC) and soil texture, four management zones with four different herbicide application rates as 1.4, 1.7, 2.9 and 3.5 L ha-1 were determined and eventually a DMM was generated. Using the generated DMM and VRA, total required herbicide for the selected field was determined to be 1.6 L. It was concluded that herbicide application can be decreased up to 13% in compared with a uniform herbicide application rate for the entire selected field.

Item Type:	Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Additional Information:	Authors retain copyright.
Uncontrolled Keywords:	variable rate application; Global Positioning System (GPS); digital management mapping; soil organic water content; soil texture; pre-emergence herbicide; precision farming
Fields of Research (FOR2008):	07 Agricultural and Veterinary Sciences > 0701 Agriculture, Land and Farm Management > 070104 Agricultural Spatial Analysis and Modelling 07 Agricultural and Veterinary Sciences > 0701 Agriculture, Land and Farm Management > 070105 Agricultural Systems Analysis and Modelling 09 Engineering > 0999 Other Engineering > 099901 Agricultural Engineering
Subjects:	290000 Engineering and Technology 290000 Engineering and Technology > 299900 Other Engineering and Technology > 299901 Agricultural Engineering
Socio-Economic Objective (SEO2008):	E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
ID Code:	5781
Deposited By:	Borzoo Ghareei Khabbaz
Deposited On:	09 Feb 2012 16:06
Last Modified:	22 Feb 2012 15:43

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