FORAGE PRODUCTIVITY AND SOIL FERTILITY UNDER ORGANIC FERTILIZER CONDITIONS ON Agrostis capillaries PASTURES

Abstract

In the last time was applied a deficient management on the grassland, from Romania. This aspect has affected the yield and forages quality on the grassland. Different measures of grassland improvement were studied, for to do away with these negative effects. The researches were carried out of 2006-2008, at Grassland Research Institute Brasov, on districambosol tipic soil, pHH2O 5.6, with a low content of mineral nutrients An organic system of fertilisation was studied on a Agrostis capillaris and Festuca rubra tipe of grassland. 20,40,60 t.ha-1 manure levels where applied in different period (autumn, spring). The effect of organic fertiliser level, the time of organic fertiliser apply and methods of grassland using (hay or frequent cutting) on botanical composition, DM yield and soil fertility were studied. The organic fertilization has causes an economical pastures using, 70-135 % DM increasing, with a stable productivity, increase the fertility and vegetal cover density and the landscape improvement. The proportion between species was changes, due to the more cutting and fertilization. To maintain a landscape and a high biodiversity is necessary only one cutting.

Keywords

• grassland
• botanical composition
• manure
• dm yield
• soil fertility