EFFECT OF THE CULTIVAR AND HARVEST DATE OF KALE (Brassica oleracea L. var. acephala) ON CROP YIELD AND PLANT MORPHOLOGICAL FEATURES

摘要

The experimental material consisted of three kale cultivars: Winterbor F_1, Redbor F_1 and Medium High Green Curly were obtained from three harvest dates. The experiment was conducted in a three-year cycle (2006-2008). Total yields ranged from 5.13 to9.32 kgm~(-2), of which marketable yield constituted on average 51-72% and processing yield 27-34%. In the present experiment, 8.42 kg of total yield per Im~2 was obtained from Winterbor F_1, 7.55 kg from Medium High Green Curly cv. and 6.71kg from Redbor F_1 as an average for all years and harvest dates. The highest total yield for all cultivars was from the second harvest date and ranged from 6.76 to 9.32 kg-m~(-2). The dry matter yield of leaves with removed veins averaged between 0.28 and 0.50 kg per Im~2 for all years and harvest dates.