조생종 벼의 움벼(ratoon-rice)생산 및 움벼의 생육특성

Jong-Hee Shin

doi:10.7740/kjcs.2015.60.2.139

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Original Research Article

조생종 벼의 움벼(ratoon-rice)생산 및 움벼의 생육특성 The Ratooning Potential of Several Early-Ripening Rice Cultivar in Korea

30 June 2015. pp. 139-145

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Abstract

Rice ratooning is the production of a second rice crop from the stubble left behind after the main-crop harvest. The main advantage of rice ratooning is that in areas where rice is the main crop, double crop of rice can be grown for additional returns. Eight cultivars of rice were tested for estimation their ratooning ability. The main crop was harvested at mass maturity, after which the tillers were mowed to stubbles of about 10 cm tall. And then left without any further input, until the ratooned plant were ready for harvest. Highly significant variations were detected in the ratoon performance among cultivars, with ratoon ability ranging from 0% (‘Unkwang’, ‘Jopeyong’, ‘Odae’, ‘Nokyang’) to 33% (‘Jinbuol’) in their grain yield. The maximum grain yield from ratoon rice was 202 and 203 kg/10a for ‘Jinbuol’ and ‘Joun’ followed by ‘Junamjoseng’ 174kg/10a. Protein and amylose contents of ratoon rice were more increased than those of main rice. The platability value of cooked rice of ratoon was lower than that of main crop. Germination rate of the previous year’s harvest of rice was not significantly different between ratoon and main crop. This rice ratooning system requires short duration, creating possibility for growing another crop in the same cropping year and offers an opportunity to increase cropping intensity per unit of cultivated areas.

Keywords

cultivar

ratoon-rice

grain yield

milled rice quality

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Information

Publisher :The Korean Society of Crop Science
Publisher(Ko) :한국작물학회
Journal Title :The Korean Journal of Crop Science
Journal Title(Ko) :한국작물학회지
Volume : 60
No :2
Pages :139-145
Received Date : 2015-03-30
Revised Date : 2015-05-26
Accepted Date : 2015-06-04
DOI :https://doi.org/10.7740/kjcs.2015.60.2.139

The Korean Journal of Crop Science ISSN:0252-9777(Print) 2287-8432(Online) 한국작물학회지

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