SOIL RESILIENCE TO CURRENT CLIMATE CHANGE UNDER THE IMPACT OF NEW AGRICULTURAL TECHNOLOGIES

Abstract

The paper presents the results of physic-chemical and microbiological characteristics of the soil Typical Kastanoziom (SRTS, 2012) in the pedo-climatic conditions of Rîmnicu de Jos, Constanța county (Romania) cultivated using two soil management systems: conventional (classical) and conservative (no-till). Agrophysical profiles were made, from which soil samples were taken (physico-chemical on predetermined depths of 5-10 cm; 25-30 cm and 45-50 cm). The analyses and determinations carried out are in accordance with the standardized methodology commonly used in the ICPA Laboratories and those of the County Offices for Pedological and Agrochemical Studies. No-till is more effective in preserving humus reserves, which is beneficial for long-term soil health and fertility. Bulk density (DAwi g / cm3) in the no-till technology works decreases with depth (the soil is unattached on the first depths – and on the last depth, the soil is very loose), compared to the classical technology where on the depth of 25-30 cm appears a slight compaction. No-till technology improves the chemical characteristics and fertility of the soil, compared to classical (conventional) technology, which can lead to soil alkalization. The implementation of no-till technology seems to greatly increase the resistance of the soil to penetration, which may indicate a better compaction or a more stable structure of the dusty clay soil, which is important for certain crops or for the stability of the land.