期刊名称：Revista Brasileira de Engenharia Agrícola e Ambiental
印刷版ISSN：1415-4366
电子版ISSN：1807-1929
出版年度：2021
卷号：25
期号：1
页码：65-71
DOI：10.1590/1807-1929/agriambi.v25n1p65-71
出版社：Departamento de Engenharia Agrícola - UFCG / Cnpq
摘要：Adequate soil managements and use of agricultural machinery are essential for the economic viability of these practices and for the environmental preservation. In this context, sowing and fertilizer application practices are the most important activities, since they affect crop development and present high energy demand. Therefore, the objective of this study was to evaluate the energy demand of a tractor-planter-fertilizer unit for the sowing of common bean seeds in no-tillage system as a function of three soil water contents (28.7, 36.4, and 47.6%) and three soil fertilizer placement depths (0.06; 0.11 and 0.15 m). The final common bean grain yield was also evaluated. The lowest energy demand was found for the highest soil water content combined with the lowest soil fertilizer placement depth. The highest common bean grain yield was found for plants under soil water content of 36.4% and fertilizer placement depth of 0.11 m, reaching 4,186 kg ha-1.
关键词：Phaseolus vulgaris;teor de água;profundidade de adubação;sistema de plantio direto
其他关键词：Phaseolus vulgaris;water content;fertilizer placement depth;no-tillage system
