Effect of manure rates on soil properties and productivity of agrocenosis
2005
Repsiene, R., Lithuanian Inst. of Agriculture, Klaipeda reg. (Lithuania). Vezaiciai Branch | Ciuberkis, S., Lithuanian Inst. of Agriculture, Klaipeda reg. (Lithuania). Vezaiciai Branch
Acid soil contains little calcium and a great amount of mobile aluminium. Liming and organic fertilisers are the main means to improve such soils properties and fertility of such soils. Two long - term stationary field trials are being carried out since 1949. The aim of the present experiments was to investigate the influence of systematic fertilisation with increasing rates of manure on chemical soil properties, weed infestation and productivity of sixth crop rotation in acid and limed soils. The soil of one field trial was acid and that of another one was limed. The increasing rates of manure (0, 20, 40, 80, 120 t haE-1) were applied in both field experiments. At the increasing rate of manure from 20 to 120 t haE-1 soil acidity over sixth crop rotation (1996-2002) decreased from pHKCl 4.1 to 4.4 in acid soil and from pHKCl 5.8 to 6.1 in limed soil. There were changes of others soil properties in both soils too. The efficiency of fertilisation by manure 80 and 120 t haE-1 in acid soil was like that of liming by 1 rate according hydrolytic soil acidity. The productivity of crops in crop rotation increased, and there was observed change in weed infestation and weed flora under manure application in both soils.
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