[Humus balance and productivity of grain-tilled crop rotation on sod-podzolic loam sand soil]
2008
Bosak, V.N. | Dembitskaya, T.V. | Mezentseva, E.G., National Academy of Sciences. Scientific and Practical Center for Arable Farming (Belarus). Institute for Soil Science and Agrochemistry
The highest productivity of grain-tilled crop rotation (potato-winter rye-barley was increased on 20,2-20,3 c/ha f.u.) 5,67-6,09 t ha-1 f. u. on sod-podzolic loam sand soil in variant with full organic-mineral fertilizers system has been obtained. Acting and after acting of various kinds of organic fertilizers increased their productivity on 2,8-7,0 c/ha f.u., green fertilizer in background variants - on 3,8-4,2 c/ha f.u. In a control variant without application of fertilizers, in variants with the mineral system of fertilizer, and also full organic and mineral system of fertilizer against after-grass use of green fertilizer negative balance of humus has been received, that can lead to decrease of humus content in arable horizon of investigated soil on 0,02-0,08%. Application of 40 t ha-1 straw manure of cattle (average annual dose of conditional manure form 15 t ha-1 of crop rotation area), on the background of full green fertilizers in variant with organic-mineral fertilizer system, as well as 4 t ha-1 straw in combination with 80 t ha-1 liquid dung (average annual dose of conditional dung - 12,5 t ha-1 crop rotation area), provides positive humus balance
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