AGRO 71 |
| The field experiences were carried out by us within several years on the same site, composts and the mineral fertilizers also were brought in annually. It has resulted in some accumulation in ground of separate chemical elements and organic substance. It has led to some accumulation in typical serozem soil in variants without application of fertilizers in a layer of 0-30 sm. 5.3 mg/for 100 g soil of the absorbed calcium and 3.6 mg/ for 100 g. soil f magnesium, and in a layer of 30-50 sm. accordingly, 3,9 and 3,0 mg/ for 100 g. soil on soil contained. The influence compost from manure, city is firm-household waste, straw and silt of fresh waters influenced, on changes of the contents of the absorbed bases, which depends on a parity (ration) of making components and his structure. Composts which on 50 % from manure in all years of researches had steady an effect on increase quantity (amount) of the absorbed calcium in soil. In this variant in an arable layer, this parameter was above the control over 1,2 mg/ for 100 g. soil, and in scorch on 2,2 mg/ for 100 g. soil.The annual entering compost on a typical serozem soil in quantity influences of 20 t/h renders appreciably influence on the contents of organic substance in soil. In it the relation contents humus in soil raised on 0,10-0,20 % in relation to the control. In process of reduction in composts a share of manure the increase of organic substance in soil decreases. Compost and there combination to mineral fertilizers positively influence the contents humus in soil, especially in the first years of entering compost and fertilizers, in the further this parameter is stabilized. |
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New Developments and Issues in Agrochemical Sciences
8:00 AM-11:00 AM, Monday, August 20, 2007 BCEC -- Exhibit Hall - B2, Poster
Division of Agrochemicals |