Microbiome and biochemical profiles changes in no-till agriculture soil. Effects of intensification of crop rotation and tillage.

WALL LG

Valparaiso

Congreso; 1st ISME Latin America Congress; 2019

ISME

n Argentina more than 22 million Ha are no-till cultivated lands. Working with actual productive fields, we have analysed different farmers? assays aiming to look for the effects of intensification and diversification of crop rotation (5 different levels of intensification of crop rotation), or tillage effects (changing from till to no -till and vice versa), on soil health properties. Enzymatic profiles, whole soil lipids fatty acid profiles, 16s DNA bar coding sequencing, meso- and macro-fauna abundance of different taxonomic groups, and proportion of soil micro-aggregates were analysed. After three years of treatments all biological and biochemical data were able to discriminate between soil treatments. Most biological activities, at different level of complexity, show good correlation with intensification of crop rotation. It was possible to find responders OTUs to the different agricultural managements. The analyses at the water resistant microaggregate level open new scenario for searching of responders and new biological indexes. With all this data we are aiming to model soil structure and function in terms of crop rotation agricultural managements to define new soil health indexes that help farmers to take decisions on their agricultural soil managements to improve yield and soil health properties.