Primary biological production of herb ecosystems with dominance of Elymus repens and Festuca valesiaca in the region of Sofia plant
1998
Bazitov, V. (Opitna Stantsiya po Polivno Zemedelie, Stara Zagora (Bulgaria))
It was found that analysed soil cultivation systems did not significantly influence the volumetric mass of soil in growing of the maize and wheat during the first two years of rotation. Zero cultivation of wheat increased soil hardness in the layrer 0-20 cm more than 2 times as compared to traditional soil cultivation. Soil cultivation systems did not influence the content of mobile phophorus in the cultivated layer. In the systems with disking and zero treatment used after the first year of rotation the distribution of mineral nitrogen in the layer 0-40 cm was more irrigular as compared to the traditional soil cultivation systems.
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