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The estimation of available rice seeding day after rainfall for partial-tillage direct seeding cultivation in Honam Plain Area  

Back, Nam-Hyun (Department of Rice and winter Cereal Crop, NICS, RDA)
Kim, Teak-Kyum (Department of Rice and winter Cereal Crop, NICS, RDA)
Ko, Jong-Cheol (Department of Rice and winter Cereal Crop, NICS, RDA)
Nam, Jeong-Kwon (Department of Rice and winter Cereal Crop, NICS, RDA)
Choi, Min-Kyu (Department of Rice and winter Cereal Crop, NICS, RDA)
Kim, Sun (Department of Rice and winter Cereal Crop, NICS, RDA)
Yang, Chang-Hyu (Department of Rice and winter Cereal Crop, NICS, RDA)
Kim, Yong-Doo (Department of Rice and winter Cereal Crop, NICS, RDA)
Kim, Si-Ju (Department of Rice and winter Cereal Crop, NICS, RDA)
Publication Information
Journal of the Korean Society of International Agriculture / v.22, no.4, 2010 , pp. 328-331 More about this Journal
Abstract
To establish the system of partial-tillage direct seeding cultivation of rice in Honam Plain Area, we investigated the related factors such as possible days of seeding work and limitation of soil moisture after rainfall. This experiment was conducted in Jeonbuk series(fluvio marine alluvial soil) at National Institute of Crop Science in Iksan from 2000 to 2001. For the proper harrowing practice and acceptable rice seedling stand rate under partial-tillage direct seeding cultivation, the higher limit of soil moisture content after rainfall was determined below 34.5 %. To reach the available seeding day after rainfall in which soil moisture dropped below 34.5 %, 4-5 days was required at 5 mm rainfall, 6-7 days at 10 mm, 8-9 days at 20 mm, and 15 days at 25 mm, respectively.
Keywords
Rice; Partial-tillage direct seeding; Soil moisture; Crushed clod rate; Seedling stand; Yield;
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