Yield, grading and packing of maize seed in sowing units
2001
Miric, M. | Jovin, P. | Selakovic, D. (Institut za kukuruz "Zemun Polje", Beograd - Zemun (Yugoslavia))
A sowing unit (Su) has become a prevalent form of seed maize packing and therefore an ideal expression for field seed yield measurements, requirements of seed grading and packing in processing and meeting the demands of buyers, users and maize sowing. The summarized results on yield research presented by the number of (graded and germinated) seeds of three main local maize hybrids are introduced in the present study. A rational maize seed production means defining the conditions in field production and processing technology that will lead to the highest number of as smaller as possible viable seeds. Based on previous research the yield seed sowing coefficient (YSC) was calculated and used to point out to the factors of the optimum technology. The optimum cropping practices encompasses: the great sowing density (up to 100,000 plants/ha), sowing models with smaller parental inter-row distances (2:1 and 4:2, and 3:1 under irrigation), medium NPK rates, i.e. medium rates of single N, compulsory irrigation. On the other hand, the optimum processing means quality and accuracy of each device fit for maintenance of seed viability and germination, and especially it means a possibility of simple seed grading according to its size.
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