Influence of sowing density on yield and quality of soybean under ecological and conventional production systems
2010
Strunjaš, V., Faculty of Biofarming, Bačka Topola (Serbia) | Dozet, G., Faculty of Biofarming, Bačka Topola (Serbia) | Zečević, V., Faculty of Biofarming, Bačka Topola (Serbia)
Research was conducted during 2008 under ecological and conventional systems of soybean production. The observed factors included three different seeding densities (400.000, 500.000 and 600.000 plants per ha) and three soybean varieties of different maturity groups (Galina, Sava and Mima). Yield and protein content were higher under conventional production than under the ecological system, while the oil content was 1.66% lower. Yield significantly depended on variety in both production systems. The effect of sowing density was non-significant in the conventional system and highly significant in ecological system. Differences between the average values of the protein content of soybean grain were not statistically significant in terms of variety and sowing density in both production technologies. Under conventional production conditions, the variety Mima had a significantly higher oil content of grain as compared to the variety Galina. The ecological production differences were not statistically significant. Sowing density had no impact on the oil content of soybean grain in both production technologies tested. A very significant negative correlation between protein and oil content was established in both ecological and conventional production systems (-0.86** and -0.91**, respectively).
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