Avaliação de hastes sulcadoras na mobilização do solo em semeadura direta do milho
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Data
2013-07-19
Autores
Tricai, Érica [UNESP]
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Universidade Estadual Paulista (Unesp)
Resumo
O Sistema Plantio Direto consiste no conjunto de técnicas que associam preservação dos recursos naturais, aliadas à mínima mobilização do solo. O desempenho da semeadora-adubadora está diretamente ligado aos mecanismos de contato com o solo, mais especificamente, as hastes sulcadoras. O objetivo deste trabalho foi avaliar a mobilização do solo, o desempenho operacional e o desenvolvimento da cultura do milho, quando semeado com dois tipos de hastes sulcadoras em três profundidades de semeadura. O experimento foi conduzido no ano agrícola de 2011/12 em área experimental da Fazenda de Ensino, Pesquisa e Extensão da UNESP/Jaboticabal em LATOSSOLO VERMELHO Eutroférrico típico. O delineamento experimental foi em blocos casualizados, esquema fatorial 2x3, com quatro repetições. As variáveis analisadas foram: área mobilizada, desempenho operacional e características agronômicas da cultura. A área mobilizada houve significância para os fatores haste e profundidade. O comportamento distinto das hastes é devido a seus parâmetros construtivos, sendo fator limitante para profundidade de trabalho, pois, determina o volume de solo mobilizado. No desempenho operacional do conjunto trator semeadora-adubadora houve diferença tanto para haste como profundidade. Desta forma opta-se pela haste que teve uma maior mobilização do solo e exigiu menor força e potência na barra de tração, trabalhando a menor profundidade desde que o solo esteja em condições adequadas de semeadura, um vez que não houve diferença na produtividade final de grãos
The no-tillage system is a set of techniques that combine natural resources preservation combined with minimum soil tillage. The seeder performance is directly linked to the mechanisms in contact with the soil, more specifically the planter shanks. This paper had as objective to evaluate the soil mobilization, operational performance and development of the corn crop when sown with two shank types furrow openers in three sowing depths. the operating performace of the tractor-seeder, soil tillage and agronomic characteristics of maize, working with two types of planter shanks fertilizer and three depths of operation. The experiment was conducted in the agricultural year 2011/12 at the experimental area the farm of teaching, research and extension UNESP/Jaboticabal on Eutrudox. The experimental design was completely randomized, 2x3 factorial with four replicates. The variables analyzed were mobilized area, operating performace and agronomic characteristics culture. The area mobilized indicated significant factors and depth shank. Results showed no interaction between types of shank and depth factors, however the mobilized area showed different behavior for shank factor because of this construction parameters, been a limiting factor for depth of work, thus determines the volume of mobilized soil. Operating performance of the tractor seeder was no difference for both shank as depth. Thus opts for shank had a greater mobilization of soil and required less force and power to the drawbar, working the shallowest depth where the ground conditions are suitable for sowing, one time there was no difference in the final yield of grains
The no-tillage system is a set of techniques that combine natural resources preservation combined with minimum soil tillage. The seeder performance is directly linked to the mechanisms in contact with the soil, more specifically the planter shanks. This paper had as objective to evaluate the soil mobilization, operational performance and development of the corn crop when sown with two shank types furrow openers in three sowing depths. the operating performace of the tractor-seeder, soil tillage and agronomic characteristics of maize, working with two types of planter shanks fertilizer and three depths of operation. The experiment was conducted in the agricultural year 2011/12 at the experimental area the farm of teaching, research and extension UNESP/Jaboticabal on Eutrudox. The experimental design was completely randomized, 2x3 factorial with four replicates. The variables analyzed were mobilized area, operating performace and agronomic characteristics culture. The area mobilized indicated significant factors and depth shank. Results showed no interaction between types of shank and depth factors, however the mobilized area showed different behavior for shank factor because of this construction parameters, been a limiting factor for depth of work, thus determines the volume of mobilized soil. Operating performance of the tractor seeder was no difference for both shank as depth. Thus opts for shank had a greater mobilization of soil and required less force and power to the drawbar, working the shallowest depth where the ground conditions are suitable for sowing, one time there was no difference in the final yield of grains
Descrição
Palavras-chave
Milho - Cultivo, Milho - Semeadura, Mecanização agrícola, Plantio direto, Desempenho, Farm mechanization
Como citar
TRICAI, Érica. Avaliação de hastes sulcadoras na mobilização do solo em semeadura direta do milho. 2013. vii, 53 p. Dissertação (mestrado) - Universidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Ciências Agrárias e Veterinárias de Jaboticabal, 2013.