EFFECTS OF PLANTING METHODS AND SEED RATES ON YIELD, YIELD COMPONENTS, AND QUALITY OF GARLIC (ALLIUM SATIVUM L.) IN THE SUDAN
There were substantial differences in garlic yields among years. The highest yield (11 123 kg/ha) was obtained in 1989–90 while the lowest yield (1 619 kg/ha) was recorded in 1990–91. These differences in garlic yields were attributed to the variations of temperatures prevailing during the winter.
The highest garlic yields were recorded when garlic was planted in holes in flat plots. The superiority of flat planting was mainly due to an increased plant population as a result of proper clove orientation at planting time.
Remarkable increases in garlic yield were realized when high seed rates were tested. Mean percentage increases in garlic yields over four seasons of 22, 30, 39, and 50% were recorded when the yields from planting rates of 594, 756, 918, and 1 080 kg of mother bulbs/ha, respectively, were compared with the yield of a planting rate of 432 kg of mother bulbs/ha. The higher levels of seeding resulted in an increased percentage by weight of small bulbs, and a decrease in the percentage by weight of large bulbs, bulb weight, and number of cloves per bulb. The high yields realized when high seed rates were tested were associated with an increased plant population.