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Uticaj gustine setve na prinos i broj semena u semenskom kukuruzu
Effects of the sowing density on he yield and the number of seeds in seed maize
aInstitut za kukuruz 'Zemun polje', Beograd-Zemun, Srbija
bUniverzitet u Kragujevcu, Agronomski fakultet, Čačak, Srbija
Sažetak
Povećane gustine setve majčinske komponente (57.100, 71.400, 85-500 bilj/ha) u prirodnim uslovima gajenja kog hibrida ZP 196 nisu značajno uticale na povećanje prinosa (4.56,4.61, 4,70 t/ha) ali su uticale na povećanje broja klijavih semena (21.2 72.000,23.893.000, 24.226.000/ha). U proizvodnji semena hibrida ZP 677, u uslovima navodnjavanja, veće gustine setve (71.400, 85-500, 99.900 bilj/ha) nisu značajno uticale na povećanje prinosa (3-39, 3.44, 3.60 t/ha) i broja klijavih semena (11.238.000, 11.651.000, 12.427.000/ha). Povećane gustine setve majčinske komponente (71.400, 85-500, 99-900 bilj/ha) u uslovima navodnjavanja kod hibrida ZP 680 značajno su povećale prinos (4.01, 4.38, 4.40 t/ha) kao i broj klijavih semena (13.122.000, 15.022.000, 15.560.000 /ha).
Abstract
Higher sowing densities (57,100, 71,400 and 85,500 plants ha-1) of the female component did not significantly affect the yield increase in the hybrid ZP 196 (4.56,4.61 and 4.701 ha-1) under natural conditions of cultivation, but they significantly affected the increase of the number of germinated seeds (21,272,000, 23,893,000 and 24,226,000 ha-1). In the seed production under irrigation conditions of the hybrid ZP 677, greater densities (71,400, 85,500 and 99,900 plants ha-1) did not significantly affect the increase of neither the yield (3.39,3.44 and 3.60 t ha-1) nor the number of geminated seeds (11,238,000,11,651,000 and 12,427,000 ha-1). On the other hand, higher sowing densities (71,400,85,500 and 99,900 plants ha-1) of the female component significantly increased both, the yield (4.01, 4.38 and 4.40 t ha-1) and the number of germinated seeds (13,122,000,15,022,000 and 15,560,000 ha-1) in the hybrid ZP 680 under irrigation conditions.
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