Design and Development of a Variable Rate Applicator for Real-Time Application of Fertilizer
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Published:2021-08-04
Issue:16
Volume:13
Page:8694
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ISSN:2071-1050
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Container-title:Sustainability
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language:en
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Short-container-title:Sustainability
Author:
Mirzakhaninafchi Hasan,Singh Manjeet,Bector Vishal,Gupta O. P.,Singh Rajvir
Abstract
Variable rate technology offers a sustainable, efficient, and cost-effective solution for fertilizer application. A study was conducted to design and develop a variable rate fertilizer applicator to detect real-time deficiency of N within the field and apply it per requirement of the crop. The microcontroller system was designed to receive a signal from the N sensor and send a signal to the pulse-width-modulation valve to vary the rotational speed of the hydraulic motor resulting in variation in the rotation of the metering mechanism drive shaft based on the recommended amount of fertilizer. During the field study, three replications were conducted, each of which was divided into four plots. The response time between the N sensing and fertilizer discharging fell within the range of 3.49 to 4.90 s. Fertilizer applied using the developed variable rate applicator indicated that when the fertilizer rate is increased from N1 to N4 (kg ha−1), NDVI increased from 0.56 to 0.78 and drive shaft rotational speed decreased from 20 to 0 rpm in order to apply the fertilizer at a rate of 0.00 instead of 78.36 kg ha−1. Using the developed applicator demonstrates that this technology could reduce environmental impact, making farming more sustainable.
Funder
Department of Science and Technology, Ministry of Science and Technology, India
Subject
Management, Monitoring, Policy and Law,Renewable Energy, Sustainability and the Environment,Geography, Planning and Development
Reference29 articles.
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2. World Fertilizer Trends and Outlook to 2020, pp. 1–53http://www.fao.org/3/i6895e/i6895e.pdf
3. The effects of continuity of early nitrogen nutrition on growth and development of Lactuca sativa;Burns,1990
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