Software development to calculate the power requirement of agricultural machinery and implementsThe use of software in agriculture allows the achievement of specific objectives in the sector. One of most complex objectives is to choose properly agricultural machines and implements, mainly due to the wide variety of equipment available in the market and the range of tasks and work situations that they are subjected in the field. The objective of this study was to develop a piece of software to calculate the power requirement of farm machines and implements used to carry out field operations, from soil preparation to planting. The software was developed using the PHP language and based on ASAE Standard D497.4 -Agricultural Machinery Management Data, as reference to develop calculations. The software developed allowed the performance of tasks to calculate the demanded power of agricultural machines and implements in a simplified way using the internet.
O objetivo deste trabalho foi avaliar o desempenho de uma semeadora de precisão na implantação e caracteres produtivos da cultura do milho. Avaliou-se o desempenho da semeadora e produtividade da cultura. Foi utilizado um trator Massey Ferguson modelo MF 283 4x2 TDA e semeadora de precisão modelo SEED LINE. Foi regulado para distribuir 5,9 sementes. m-1 (65.000 plantas.ha-1), com 5 cm de profundidade e 90 cm entre linhas. O experimento foi montado em blocos casualizados, com três velocidades e quatro repetições, totalizando 12 unidades amostrais. As velocidades de operação foram 7,0; 5,5 e 4,5 km.h-1. Observou-se que a velocidade influenciou na velocidade periférica do disco dosador de sementes, número de sementes, espaçamento entre sementes, comprimento e largura da folha. Consequentemente, a maior velocidade periférica do disco dosador interferiu no número de sementes (3,9) e espaçamento entre sementes na maior velocidade. Para as condições experimentais recomenda-se a utilização da velocidade de trabalho de 4,5 km.h-1.
The use of computer programs in the agricultural sector could achieve specific objectives in area. Among these, one of most complex is the selection of farm machinery and implements for optimization of agricultural operations, primarily due to wide variety of equipment on market and range of tasks and work situations that they are subjected in the field. The aim of this study was to develop a computer program to determine preventive maintenance of agricultural tractors normally used in conducting field operations. Developed in PHP the software, made possible the execution of tasks that allow user to program add some periodic maintenance to database program, such as number of hours and its maintenance simplified form over the internet.
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