Avaliação de parâmetros químicos e biológicos em diferentes sistemas de manejo do solo

Abstract

The aim of this study was to determine the effect of different soil management practices on several soil microbiological parameters. Samples from plots of a field experiment on typic harplortox, which have been cultivated under different management systems for more than ten years, were used. The experimental design was in random blocks with four treatments of soil management (tillage soybean-corn rotation, tillage soybean continuously, no-tillage soybean-corn rotation and no-tillage soybean continuously) and two repeti tions. Sampling at 3 depths were perf ormed from july, 1992 to January, 1994, at eight time points, respectively: 7/10/92 (first sampling); 1/6/93 {soybean sowing); 3/29/93 (soybean blooming); 5/6/93 (soybean harvesting); 5/14/93 (oat sowing); 7/24/93 {oat blooming); 10/3/93 (oat harvesting) and 1/5/94 {soybean sowing} .The following parameters were analyzed: microbial biomass, dehydrogenase activity, number of nodules in soybean infected with Bradyrhizobuin, number of arbuscular mycorrhizal fungal spores, percentage of xi * médias seguidas da mesma letra ,na vertical, não diferem significativamente entre si.

Influência Da Granulometria Na Dureza Do Organomineral Granulado

“…A avaliação da qualidade do solo, pode ser baseada na análise de atributos físicos, quimicos e biológicos, que podem funcionar como indicadores da qualidade do sistema edáfico. Os resultados obtidos podem ser apresentados de forma qualitativa e/ou qualitativa (SILVA, 2019), contribuindo para um melhor direcionamento do manejo adotado em uma determinada área (FERNANDES, 2019).…”