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International Journal of Basic Science and Technology

A publication of the Faculty of Science, Federal University Otuoke, Bayelsa State

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Archive | ISSUE: , Volume: Jan-Mar-2022

Development and Performance Evaluation of a Solar Powered Knapsack Sprayer


Author:Ekom. A.H, Suleman M.L, El-Okene A.M.I and Saleh A

published date:2022-Mar-24

FULL TEXT in - | page 13 - 23

Abstract

One of the most common technique for applying pesticides is the use of knapsack sprayer. A lever-operated knapsack sprayer is readily available and inexpensive, but it is time-consuming to use. Because of the constant manual agitation of the lever arm, which actuates and pumps the pesticides through the reciprocation of the lever arm, the operator frequently suffers from pains and fatigue. To reduce the drudgery due to manual agitation of the lever arm, solar power-operated knapsack sprayer was designed and constructed. The components of the developed sprayer are the photovoltaic panel, lead battery, battery case, and battery-operated pump in addition to the components of the conventional lever-operated sprayer except for the sprayer handle that was eliminated. The performance evaluation of the developed solar - powered sprayer was carried out in both the laboratory and the field to examine the spray flow rate, spray volume distribution pattern, field capacity, and application rate. Results obtained show a uniform spray distribution of 20.66 % coefficient of variation. Similarly, 557 ml/min, 0.35 ha/hr and 380.40 l/ha were obtained for spray flow rate, field capacity and application rate, respectively. Results obtained also show that the developed solar-powered sprayer has greater field capacity than conventional lever-operated sprayer as its operation has reduced the drudgery involved in pesticide application, saves operators time as well as providing comfort for the operator.

Keywords: Knapsack sprayer, Photovoltaic panel, Lead battery, Pesticide, Solar panel

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