Correlação entre produtividade do arroz no sistema semeadura direta e atributos do solo
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Data
2015
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Resumo
This study aimed to identify a set of soil attributes correlated to upland rice yield in order to
establish the most adequate soil conditions to cultivate this cereal under no-tillage system.
In Santo Antônio de Goiás, GO, in areas cropped with upland rice under no-tillage system
for one, two or three years, respectively, rice yield was determined and soil samples were
collected from soil layer of 0-0.10 m of an Acric Red Latosol (Oxisol) to determine physical,
chemical and biological attributes of soil. Grain yield showed positive linear correlation
with total nitrogen, copper, iron, manganese, microbial biomass carbon and nitrogen
(MBN) contents, total enzymatic and acid phosphatase activities, microbial quotient and
MBN:total N relationship, and negative with the microporosity and metabolic quotient.
Based on multiple regression analysis, copper, iron and MBN contents and acid phosphatase
activity were the soil attributes that together better explained rice yield.
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Oryza sativa L., Qualidade do solo, Atributos físicos, Atributos químicos, Atributos biológicos
Citação
GODOY, Sinnara G. de; STONE, Luís F.; FERREIRA, Enderson P. de B.; COBUCCI, Tarcísio; LACERDA, Mábio C. Correlação entre produtividade do arroz no sistema semeadura direta e atributos do solo. Revista Brasileira de Engenharia Agrícola e Ambiental, Campina Grande, v. 19, n. 2, p. 119-125, 2015.