SOIL-PLANT INTERACTIONS WITH PRODUCTION OF GREEN MANURE PLANTS UNDER UNFAVOURABLE FIELD CONDITIONS

Using green manures is an efficient way of ensuring that the organic matter content of soils is not reduced, their nutrient management is improved, the soil is protected and the chance of the stress for the following crop is decreased. In 2007, in experiments on rusty brown forest soil in Godollo we examined the impact of phacelia, mustard, and oil seed radish on soil condition and plant. In the present paper we evaluate phenological parameters and impact on soil moisture content as well as their interaction taken as functions of sowing time, nutrient dose and impact on crops following the green manure plant. The largest amount of dry mass was measured for those plants that were sown at the end of July, provided nitrogen was supplied at the same time. For plants that were sown at the same time but received no extra nitrogen, the amount of biomass produced was significantly less. Moisture content values were significantly higher in plots where green manuring was applied and where plants were left on the surface than in those which were uncovered