Soybean seed size and quality as a function of soil compaction
Yield and quality of soybean seeds can be influenced by many factors such as climate, adopted cultural practice, genetic potential of cultivars and soil characteristics. The objective of this research was to study the effect of soil compaction on physiological quality, size and productivity of soybean seeds. The study was carried out in an area of 60.5 ha within a seed production field, where a sampling grid of 1 point per hectare was generated. In each sampling point, the soil resistance to penetration was determined and the size and physiological quality of seeds produced was assessed by germination and vigour tests. Maps of soil resistance to penetration, productivity, seed size and seed physiological quality were interpolated from the point data and correlation analysis of variables performed. Soil compaction negatively affects productivity, size and physiological quality of soybean seeds. Spatial variability for all assessed characteristics was detected and a minimum interdependence of 200 m was established.
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Document Type: Research Article
Publication date: October 1, 2012
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