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http://dx.doi.org/10.7740/kjcs.2020.65.2.142

Identification of Ideal Seed Harvest Time for Itallian Ryegrass (IRG) 'Kowinearly' Variety in Reclaimed Land  

Kang, Chan Ho (Jeonllabukdo Agricultural Research & Extension Services)
Lee, In Sol (Jeonllabukdo Agricultural Research & Extension Services)
Kwon, Suk Ju (Jeonllabukdo Agricultural Research & Extension Services)
Publication Information
KOREAN JOURNAL OF CROP SCIENCE / v.65, no.2, 2020 , pp. 142-150 More about this Journal
Abstract
This experiment was conducted to set ideal harvest time for itallian ryegrass (IRG) seed in reclaimed land. For IRG 'Kowinearly' variety sown in both autumn and spring, the peak growth in reclaimed land occurred in 20-30 days after heading. Plant height of IRG seedings in the spring was 90.4% of the fall-sown's plants. The yield of IRG seeds in reclaimed land was generally lower than that of farm land due to poor growth conditions. After heading, the lodging and shattering increased gradually with time. The highest yield of seed in the fall-sown trial treatment was 238 kg/10a. However, in the spring-sown treatment, the highest yield reached 169 kg/10a, which was 71% that of the fall-sown treatment. To set optimum harvesting time for IRG seed, morphological changes in the plant, moisture content of seed, and germination rate were analyzed according to time series after heading. After heading, IRG stem color had turned pink in 18 days and seed color also changed after 20 days. Following 20-25 days after heading, the seed moisture content decreased to below 55% and germination rate increased to over 90%. Therefore optimum harvesting time for IRG 'Kowinearly' variety in reclaimed land was 20-30 days after heading because germination rate and yields were high and shattering percentage was low.
Keywords
Italian ryegrass (IRG); 'Kowinearly' variety; reclaimed land; seed harvest time;
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Times Cited By KSCI : 4  (Citation Analysis)
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