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Evaluation of a dual-purpose chemical applicator for paddy fields

Problem statement: One of the major problems of rice production is the shortage of labor resulting from migration from rural to urban areas, making it very difficult to meet peak demands for paddy production. In most developing countries of Southeast Asia, agricultural mechanization of paddy field o...

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Main Authors:	Abubakar, Mohammed Shu'aibu, Ahmad, Desa, Othman, Jamarei, Sulaiman, Shamsuddin, Misron, Norhisam
Format:	Article
Language:	English
Published:	Science Publications 2011
Online Access:	http://psasir.upm.edu.my/id/eprint/23046/1/ajassp.2011.362.367.pdf http://psasir.upm.edu.my/id/eprint/23046/ http://thescipub.com/abstract/10.3844/ajassp.2011.362.367
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spelling	my.upm.eprints.230462017-11-22T10:10:24Z http://psasir.upm.edu.my/id/eprint/23046/ Evaluation of a dual-purpose chemical applicator for paddy fields Abubakar, Mohammed Shu'aibu Ahmad, Desa Othman, Jamarei Sulaiman, Shamsuddin Misron, Norhisam Problem statement: One of the major problems of rice production is the shortage of labor resulting from migration from rural to urban areas, making it very difficult to meet peak demands for paddy production. In most developing countries of Southeast Asia, agricultural mechanization of paddy field operation is mostly carried out using conventional machines. For example in rice production powerintensive operations such as water pumping, land preparations, transplanting seedlings, harvestings and threshing are being mechanized but other operations like fertilizer and chemical (pesticides) applications are not yet fully mechanized, rather they are performed manually with motorized backpack knapsack sprayers which have many disadvantages. The main objective of this study was to develop and evaluate a new concept dual-purpose chemical applicator for paddy fields farmers in order to complement the labor shortage during the peak period. Approach: A dual-purpose chemical applicator for flooded paddy field was evaluated using the S341.4 Standard in respect to the distribution patterns/droplet sizes and uniformity of spreading/spraying for the chemical application to boost agricultural mechanization in rice production and also to overcome the safety concern of hazardous spray drift during chemical application by the paddy farmers. The dual purpose applicator was mounted on a high clearance prime mover. The machine performances for both granular and liquid chemical application were reported. Results: Results for urea granular chemical indicate that at low (40 kg ha-1) and high (120 kg ha-1) rates and 550 rpm disc speed distribution pattern skewed to the left whereas the distribution pattern shape at medium (80 kg ha-1) rates was good flattop. At high rate (120 kg ha-1) and 1000 rpm disc speed, mean distribution pattern became poor (M-shape) and also at low and medium application rates the distribution pattern shapes lopsided to the left. For NASA glyphosate liquid chemical herbicide, the average values of (VDM) and (NMD) were 108 and 79 µm at 80 lt/ha application rate and 5000 rpm rotary disc speed and 185 and 119 µm at 80 lt/ha application rate 3000 rpm rotary disc speed. Conclusion: The experimental results from the experimental tests suggest that the average effective field capacity for the equipment with a prime mover was found to be 0.89 ha h-1 or 7.12 ha/man-day for an 8 h working day. Science Publications 2011 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/23046/1/ajassp.2011.362.367.pdf Abubakar, Mohammed Shu'aibu and Ahmad, Desa and Othman, Jamarei and Sulaiman, Shamsuddin and Misron, Norhisam (2011) Evaluation of a dual-purpose chemical applicator for paddy fields. American Journal of Applied Sciences, 8 (4). pp. 362-367. ISSN 1546-9239; ESSN: 1554-3641 http://thescipub.com/abstract/10.3844/ajassp.2011.362.367 10.3844/ajassp.2011.362.367
institution	Universiti Putra Malaysia
building	UPM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Putra Malaysia
content_source	UPM Institutional Repository
url_provider	http://psasir.upm.edu.my/
language	English
description	Problem statement: One of the major problems of rice production is the shortage of labor resulting from migration from rural to urban areas, making it very difficult to meet peak demands for paddy production. In most developing countries of Southeast Asia, agricultural mechanization of paddy field operation is mostly carried out using conventional machines. For example in rice production powerintensive operations such as water pumping, land preparations, transplanting seedlings, harvestings and threshing are being mechanized but other operations like fertilizer and chemical (pesticides) applications are not yet fully mechanized, rather they are performed manually with motorized backpack knapsack sprayers which have many disadvantages. The main objective of this study was to develop and evaluate a new concept dual-purpose chemical applicator for paddy fields farmers in order to complement the labor shortage during the peak period. Approach: A dual-purpose chemical applicator for flooded paddy field was evaluated using the S341.4 Standard in respect to the distribution patterns/droplet sizes and uniformity of spreading/spraying for the chemical application to boost agricultural mechanization in rice production and also to overcome the safety concern of hazardous spray drift during chemical application by the paddy farmers. The dual purpose applicator was mounted on a high clearance prime mover. The machine performances for both granular and liquid chemical application were reported. Results: Results for urea granular chemical indicate that at low (40 kg ha-1) and high (120 kg ha-1) rates and 550 rpm disc speed distribution pattern skewed to the left whereas the distribution pattern shape at medium (80 kg ha-1) rates was good flattop. At high rate (120 kg ha-1) and 1000 rpm disc speed, mean distribution pattern became poor (M-shape) and also at low and medium application rates the distribution pattern shapes lopsided to the left. For NASA glyphosate liquid chemical herbicide, the average values of (VDM) and (NMD) were 108 and 79 µm at 80 lt/ha application rate and 5000 rpm rotary disc speed and 185 and 119 µm at 80 lt/ha application rate 3000 rpm rotary disc speed. Conclusion: The experimental results from the experimental tests suggest that the average effective field capacity for the equipment with a prime mover was found to be 0.89 ha h-1 or 7.12 ha/man-day for an 8 h working day.
format	Article
author	Abubakar, Mohammed Shu'aibu Ahmad, Desa Othman, Jamarei Sulaiman, Shamsuddin Misron, Norhisam
spellingShingle	Abubakar, Mohammed Shu'aibu Ahmad, Desa Othman, Jamarei Sulaiman, Shamsuddin Misron, Norhisam Evaluation of a dual-purpose chemical applicator for paddy fields
author_facet	Abubakar, Mohammed Shu'aibu Ahmad, Desa Othman, Jamarei Sulaiman, Shamsuddin Misron, Norhisam
author_sort	Abubakar, Mohammed Shu'aibu
title	Evaluation of a dual-purpose chemical applicator for paddy fields
title_short	Evaluation of a dual-purpose chemical applicator for paddy fields
title_full	Evaluation of a dual-purpose chemical applicator for paddy fields
title_fullStr	Evaluation of a dual-purpose chemical applicator for paddy fields
title_full_unstemmed	Evaluation of a dual-purpose chemical applicator for paddy fields
title_sort	evaluation of a dual-purpose chemical applicator for paddy fields
publisher	Science Publications
publishDate	2011
url	http://psasir.upm.edu.my/id/eprint/23046/1/ajassp.2011.362.367.pdf http://psasir.upm.edu.my/id/eprint/23046/ http://thescipub.com/abstract/10.3844/ajassp.2011.362.367
_version_	1643827944664072192
score	13.211869

Evaluation of a dual-purpose chemical applicator for paddy fields

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