[Influence of agrochemical properties of sod-podzolic loam sand soils and fertilizers on productivity and quality of barley grain]
2008
Putyatin, Yu.V. | Seraya, T.M. | Bogdevich, I.M. | Kalenik, G.I., National Academy of Sciences. Scientific and Practical Center for Arable Farming (Belarus). Institute for Soil Science and Agrochemistry
Sod - podzolic sandy loam soils are characterized by a wide range concerning the content of exchange cations and acidity of the soil environment. As a result of research it is established, that for reception of production with minimum content of radionuclides higher indicators of cation soil structure, than for formation of high productivity of grain are required. Agroecological minima of radionuclides 137Cs and 90Sr accumulation by barley grain are marked at reaction pHKCI 6,8-7,0, the exchange Ca content 1100-1300 mg/kg, at parity Са2 +/Mg2 + = 3,1-3,5, the content of mobile potassium 420 mg/kg. Achievement of the above-stated agrochemical indicators is demand the big expenses and can be justified only on the separate sites polluted by 90Sr if allows to receive food grain of higher quality with the admissible content of radionuclides. As a result of research positive action of decrease in acidity of sod-podzolic loam sandy soil on quality of grain of barley is established. The protein content in grain against pHKCI 4,9 on the average by variants has made 11,6%, against pHKCI 5,9 - 12,1%, against pHKCI 6,8 - 12,5%. The increase of potassium content with 60 to 120 kg/ha against N60P60 has raised the protein content in grain on the average on 0,94%. Dose increase of potassiumкалия to 180 kg/ha reduced a few the protein content of barley grains. The protein content in barley grain in variant N60P60K120 against pHKCI 6,8 - 13,77% was the highest
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