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http://dx.doi.org/10.7740/kjcs.2022.67.2.085

Rice Yield and Quality in Mixed Cropping of Several Colored Rice Cultivars  

Shin, Jong-Hee (Division of Crop Research, Gyeongsangbuk-do Provincial Agricultural Research and Extension Services)
Han, Chae-Min (Division of Crop Research, Gyeongsangbuk-do Provincial Agricultural Research and Extension Services)
Kwon, Jung-Bae (Division of Crop Research, Gyeongsangbuk-do Provincial Agricultural Research and Extension Services)
Won, Jong-Gun (Division of Crop Research, Gyeongsangbuk-do Provincial Agricultural Research and Extension Services)
Publication Information
KOREAN JOURNAL OF CROP SCIENCE / v.67, no.2, 2022 , pp. 85-94 More about this Journal
Abstract
The mixed cropping system is a centuries-old cropping technique widely practiced in farmers' fields worldwide. Increased plant diversity enhances farmland biodiversity, which improves grain yield and quality. However, the effect of growing different rice cultivars simultaneously has rarely been investigated. In the present study, six glutinous rice cultivars were selected, and two mixture cultivation methods were determined according to plant height, grain yield, and color. Colored and glutinous rice are used for specific purposes by consumers because of their color and nutritive value. Six glutinous rice varieties, including aromatic and colored rice, were included in the combination interplanting trials. The results showed that, compared with the corresponding monocropping systems, almost all combinations of the mixed cropping systems had advantages in yield-related traits. Compared with monocropping systems, mixed cropping systems increased the number of panicles per plant and maturation rate by 20% and 10%, respectively. An increase of 18-20% grain yield was observed in mixed cropping plots compared with that in plots which grew only a single rice variety. Some rice varieties, such as green colored rice 'Nogwonchall' and black colored rice 'Chungpunghukhayangchall', exhibited 18-22% increased yield when they were planted in combinations. The high yields were primarily owing to improved light interception and reduced lodging, although other factors (for example, reduced severity of disease) may have also contributed.
Keywords
blending rice; colored glutinous rice variety; mixed cropping;
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