Penetration resistance dynamics of a Dark Red Latosol of Microregion of Goiania, State of Goias, Brazil

Revista Brasileira de Engenharia Agrícola e Ambiental

Oliveira, Geraldo C.¹  Mello, Carlos R.²  Severiano, Eduardo C.¹ 

[1] UFLA, Lavras;UFLA

关键词: soil resistance;    structural degradation;    cerrado soil management;    soil moisture     INTRODUÇÃO O Campus II da Universidade Federal de Goiás;    localizado em Goiânia;    GO;    é predominantemente recoberto por Latossolos Vermelhos (Lopes et al;   

DOI  :  10.1590/S1415-43662007000300004

学科分类：农业科学（综合）

来源: Universidade Federal de Campina Grande * Centro de Ciencias e Tecnologia

【 摘 要 】

This study aims to evaluate soil moisture and bulk density effects on penetration resistance dynamics of Dark Red Latosol, located in the Microregion of Goiânia, Goias. Area under rotating pasture were sampled 1) in lines and 2) between lines; 3) pasture renewal area; 4) area under Central Pivot; 5) area under no-tillage and 6) forest. Penetrometry tests were done for three different soil moistures, and six undisturbed soil samples were collected in layers of 0-5 and 20-30 cm for determination of bulk density, soil moisture at field capacity, total porosity, and micro and macro-porosity. Soil use and management affected in a differentiated way, all analyzed soil attributes; penetrometry diagnosis test was efficient when accompanied by bulk density and soil moisture analysis; the Dark Red Latosol studied appears to offer a restriction on types of crops cultivated in areas under central pivot and in rotating pasture when soil presents low moisture.

【 授权许可】

CC BY-NC