Effects of the sowing density on he yield and the number of seeds in seed maize

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 tha-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.

Keywords

• planting density
• seed number per hectare
• seed yield