كليدواژه :
الگوي كاشت , ذرت شيرين , اجزا عملكرد , plant density , تراكم بوته , sweet corn , plant pattern
چكيده لاتين :
In order to study the effect of planting pattern and plant density on grain yield of sweet corn (hybride ksc404) a field experiment was conducted in 2002 at Ramin Agricultural Research and Education Center at Shahid Chamran University. The design was a factorial in Randomized Complete Block Design with 4 replications. The plant density consisted of 3 levels (d1=60000, d2=75000 and d3=90000 plants/ha) and planting pattern (a1= single row on hill, a2 =single row on hill as zigzag and a3 = twin rows as zigzag). Results indicated that the highest amount of dry matter yield (1070.6 g/m2), wet cob yield (2293.7 g/m2), grain yield (383.83 g/m2), cob length (14.41 cm), kernel number in row and kernel number in cob was obtained with twin rows planting pattern. Also the results showed that plant density influenced dry matter yield, wet cob yield, grain yield, kernel number in cob, kernel number in row, harvest index (1-1), 1000 grain weight, except length and diameter cob. The highest dry matter (1089.3 g/m2) and wet cob yield (2364.7 g/m2) were obtained by 9 plantlm2 density but highest grain yield (374.54 g/m2), HI (38.3 %) obtained at 7.5 plants/m2 density, however, by increasing plant density the other factors reduced.
