[Individual productivity of plants and yields of winter rape seeds depending on the rate of sowing]
2006
Zholik, G.A.,Belarus State Academy of Agriculture, Gorki (Belarus)
Results of research into peculiarities of formation of individual seed productivity of plants and crop yield as a whole depending on the sowing rate of winter rape: 2.4, 2.0, 1.4 and 1.0 ml/ha of germinated seeds are shown. It was established that increased sowing rates result in better fruit formation and improve fruit conservation until harvest-time. However, individual seed productivity of plants was higher in crops with lower density of growing. The highest yield of winter rape seeds during all the years of research and the average of 3.34 t/ha during this period were obtained at the sowing rate of 1.4 mln/ha of germinated seeds. The course of flowering, fruit formation and as a whole of formation of crop of seeds of winter rape in many respects depends on density of standing of plants, and also is defined by the meteorological conditions developing during the period of budding-maturing. At low density of standing on strongly branched out plants the high number of fruits is formed, however their infructescense depending on number flowers and a retentivity to harvesting because of a high competition in maintenance with moisture and elements of a feed were below. Fruits infructescense and their retentivity to harvesting decreased at decrease in norm of seeding.. However individual seed efficiency was higher in crops with smaller density of standing of plants. The highest productivity of seeds of winter rape in all years of research and on the average for all period (3,34 t/ha) is received at norm of seeding 1,4 mln/ha of germinating seeds
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