![]() Revista de Agricultura Neotropical 2(1):17-23.). The knowledge of this characteristic has also led to the development of alternative equipment based on the knapsack hand sprayer using the tractor as a power source ( França et al., 2015 França JAL, Gonçalves WS, Romeiro BP, Benett CGS, Silva AR (2015) Desenvolvimento e avaliação de um pulverizador hidráulico de barras rígidas horizontais de baixo custo. According to the author repetitive effort can develop muscular fatigue, a fact that has not been researched for knapsack sprayers. These requirements call into question two important aspects: the effort required by a knapsack sprayer operator on the repetitive movement of the arm which activates the pumping lever, and the consequence of this to the operator during the execution of the work. When it is called the left or right upper limb, the right becomes the predominant member and the left is the non-predominant member, thus characterizing right or left-handed people. knapsack sprayer work requires the operator to constantly move the left upper limb (arm) when it activates the tank pressure lever, moving the upper right limb, directing the nozzle by means of the boom sprayer and a constant walk with the sprayer being carried on his back. Dissertação Mestrado, Centro Universitário de Caratinga. ![]() indirectly measured the physical effort to work with knapsack hand sprayers (cardiac frequency and O 2 consumption), classifying this activity as “moderately heavy”.Īccording to Freitas (2006) Freitas CS (2006) Análise ergonômica da atividade com pulverizador costal manual na cultura do café no município de Caratinga. (2014) Sasaki RS, Furtado Júnior MR, Leite ES, Souza AP, Teixeira MM, Fernandes HC (2014) Avaliação ergonômica de pulverizadores costais utilizados no setor florestal. This recommendation is hardly followed by the users of knapsack sprayers. The authors recommend the adoption of posture training, workout gymnastics and the adoption of scheduled breaks to mitigate the risks involved due to the sprayer weight. Workers, when using heavy equipment are subject to fatigue and development of musculoskeletal problems. The standard ISO 19932-1: 2013 (Crop Protection Equipment - Knapsack sprayer Part 1: Requirements and test methods) specifies the minimum requirements, test methods and performance limits for the knapsack sprayer in order to ensure safety.Īccording to Souza & Santana (2011) Souza NSS, Santana VS (2011) Incidência cumulativa anual de doenças musculoesqueléticas incapacitantes relacionadas ao trabalho em uma área urbana do Brasil. Ambiência 7(2):329-337.) and technologies, as it can incorporate even the electrostatic charging of the spray liquid ( Mamidi et al., 2013 Mamidi VR, Ghanshyam C, Kumar PM, Kapur P (2013) Electrostatic hand pressure knapsack spray system with enhanced performance for small scale farms. Several equipments are used in the application of agrochemicals, and in the family properties the knapsack hand sprayer is highlighted due to the low cost of acquisition and variability of use in different operating conditions ( Lopes et al., 2011 Lopes ES, Oliveira FM, Rodrigues CK (2011) Determinação da carga física de trabalho na atividade manual de herbicida. ![]() Revista Científica Eletrônica de Agronomia.27. The applications of pesticides are made by means of spraying, that is, by the generation and emission of liquid particles, in order to control pests and help to increase the productivity of the crops, being part of the world agricultural production ( Silva et al., 2015 Silva JA, Carolino L, Gimenez LB (2015) Análise e avaliação da tecnologia de aplicação de defensivo agrícola na cultura da lichia.
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