Optimum Seeding Date of Wet Hill Seeding on Puddled Soil after Weedy Rice Control in Southern Plain Area of South Korea

Woon-Ha Hwang; Jae-Hyeok Jeong; Hyen-Seok Lee; Seo-Yeong Yang; Chung-Keun Lee; Seung-Hyun Cho; Hyun-Kyung Min; Sang-Kuk Kim; Eun-Hui Han; Kyung-Jin Choi

doi:10.7740/kjcs.2018.63.4.273

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2018 Vol.63, Issue 4 Next Page

Original Research Article

Optimum Seeding Date of Wet Hill Seeding on Puddled Soil after Weedy Rice Control in Southern Plain Area of South Korea 잡초성벼 경종적 방제 후 남부지역 벼 무논점파재배 파종적기

31 December 2018. pp. 273-281

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Abstract

Wet hill seeding (WHS) is one of the more famous labor and money saving methods technology used for rice cultivation. In WHS, rice standing percentage and weedy rice occurrence are the most important factors considered to secure a rice yield. We investigated the optimum seeding date of WHS in the Southern Plain area of South Korea. Weedy rice needed two weeks at 15°C to show over 80% emergence. Germinated rice seed grown at 20°C needed over for 10 days to achieve a shoot length over 3 cm. In field cultivation, the mean temperature for ten days after seeding showed a highly positive correlation with rice standing rate, spikelet number per square meter and yield index that favorably compared to machine transplanting. With these data, we suggest that the optimum seeding date of WHS that can secure over 98% of yield index of machine transplanting in Southern part of Korea is May. 21~Jun. 5 in Honam and May. 16~Jun. 5 in Yeongnam area.

Keywords

optimum seeding date

temperature

weedy rice

wet hill seeding

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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 : 63
No :4
Pages :273-281
Received Date : 2018-08-30
Revised Date : 2018-11-09
Accepted Date : 2018-12-10
DOI :https://doi.org/10.7740/kjcs.2018.63.4.273

The Korean Journal of Crop ScienceISSN:0252-9777(Print) 2287-8432(Online)한국작물학회

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