The effects of different row spacing on herbage and seed yields of annual Ry egrass (Lolium multiflorum cv. Caramba)

This study has been carried out at the experimental area of the Field Crops Department of Cukurova University, Agricultural Faculty in 2003-2004, to determine the effects of different row spacing (sprinkle planting, 15, 20, 25, 30, 35, 40 and 45 cm row spacing) on the herbage and seed yields of and some agricultural characteristics of annual ryegrass cv. Caramba. According the results, average of two years the different row spacing significantly affected both herbage and hay yields, crude protein rate and yield, seed yield, tiller number and its proportion, spike length and spike weight. As a result, 20 cm row spacing 16.90% crude proteins, 30 cm row spacing 80754 kg ha -1 herbage and 14932 kg ha -1 hay and 235 kg ha -1 crude protein yields have been obtained. The highest tiller number has been obtained from sprinkle planting (877 item/m2) and 15 cm row spacing (874 item/m2), fertile tiller number (470 item/m2) from 15 cm row spacing, percentage of fertile tiller (% 63.9) from 40 cm row spacing, seed yield from 35 cm (360 kg h -1) and 30 cm (341 kg h -1) row spacing. It has been concluded that, for the highest herbage and seed yield, row spacing of 30 cm has been the best one