Effect of NP [nitrogen and phosphorus fertilizers] and seed inoculation on soybean yield and protein content in the grain
2004
Nedic, M.(Poljoprivredni fakultet, Beograd - Zemun (Serbia and Montenegro)) | Zivanovic, Lj. | Kolaric, Lj. | Jovanovic, B. | Vukovic, Z.
The aim of the study was to analyze the effect of different amounts and proportion of nitrogen and phosphorus but also of seed inoculation on soybean yield and total protein content in the grain. Trials were conducted on two soil types: chernozem (southern Banat) and brown forest (central parts of Sumadija). The soybean cultivar used was Balkan (matirity group 1). Based on the results obtained it can be concluded that on average soybean yield was higher on both soil types (by 5.6% and 8.6% on chernozem and brown forest respectively) using inoculation seeds. The highest average grain yield was achieved using 100 kg of nitrogen per ha in combination with 35 and 70 kg of phosphorus per ha (3.48-4.28 t/ha and 2.79-3.21 t/ha on the chernozem and brown forest soil type respectively). The total protein content in the grain was somewhat greater on the chernozem soil type (on average 32.7%) than on the brown forest soil type (30.9%). Seed inoculation was found to raise the protein content on brown forest soil type only (by 1.4%). On both soil types all the nitrogen variants contributed to a greater protein content in the grain compared with the variants with phosphorus and the control variant (non-fertilized).
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