Effectiveness of fertilizers applied to calcareous chernozem soil given basal dressing of high rates of phosphorus and phosphorus-potassium fertilizers

Vertii, S.A.; Bunyakin, I.Y.; Stokozov, I.P.

Khimiya v Sel' skom Khozyaistve 10(6): 6-9


Accession: 000077744

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In trials in 1969-71 with winter wheat grown on calcareous chernozem soil containing 0.81-1 mg P2O5 and 35-37 mg K2O/100 g soil, average grain yields on plots given a basal dressing of (a) 400 kg P2O5 or (b) 400 kg P2O5 + 150 kg K2O/ha, or (c) no fertilizer were 4.84, 4.68 and 3.73 t/ha, respectively. Application of 90 kg N + 60 kg P2O5/ha increased yields to 5.61, 5.54 and 4.55 t/ha on plots given (a), (b) and (c), respectively. The yield increase obtained by applying 60 kg N + 60 kg P2O5/ha to plots given (c) was significantly higher than the total increase obtained by applying them separately. Fertilizers applied with or without the basal dressing increased grain protein and gluten contents and percentage of translucent grains.