Effect of Ridging System and Mulch Types on Growth, Yield, and Profitability of Potato (Solanum tuberosum L.) in Spring Cropping
2016
Im, J.S., National Institute of Crop Science, Rural Development Adminstration, Pyeongchang, Republic of Korea | Cho, J.H., National Institute of Crop Science, Rural Development Adminstration, Pyeongchang, Republic of Korea | Cho, K.S., National Institute of Crop Science, Rural Development Adminstration, Pyeongchang, Republic of Korea | Chang, D.C., National Institute of Crop Science, Rural Development Adminstration, Pyeongchang, Republic of Korea | Jin, Y.I., National Institute of Crop Science, Rural Development Adminstration, Pyeongchang, Republic of Korea | Yu, H.S., National Institute of Crop Science, Rural Development Adminstration, Pyeongchang, Republic of Korea | Lee, J.N., National Institute of Crop Science, Rural Development Adminstration, Pyeongchang, Republic of Korea
BACKGROUND: This study was conducted to determine effects of ridging systems and plastic film mulch types on growth, yield, and profitability of potato (Solanum tuberosum L.) in spring cropping using paddy field and to suggest profitable ridging system and plastic mulch type. METHODS AND RESULTS: Two potato cultivars ('Goun', and 'Atlantic') were grown at paddy field located in Gangneung in spring. For treatments, ridging systems were one-row ridge (OR) and two-row ridge (TR). Mulch types were no-mulch (NM), black plastic film mulch (BPM), and transparent plastic film mulch (TPM). Emergence of sprout was affected by the mulch types and the fastest level was shown at TPM treatment. Accumulative soil temperature during sprouting was 16. 2Celsius higher at TR than at OR and also higher at TPM than at BPM or NM. Stem length was not affected by ridging systems or mulch types. Leaf area index (LAI) was influenced by mulch types, while not by ridging systems. The highest LAI was shown at TR with TPM and OR of BPM. There was no significant difference in specific gravity or dry matter rate by ridging systems and mulch types. Tuber yield was significantly influenced by ridging systems and mulch types. Mean tuber weight was heavier at OR treatment than at TR and also the heaviest at TPM among mulch types. The highest marketable yield was found at OR with BPM. Based on marketable tuber yield and market price, the highest income ratio in two cultivars was found at OR with BPM and it was 20~82% higher than the ratio at TR with TPM. CONCLUSION: In spring potato cropping using paddy field, OR with BPM is better for high yield and is more profitable for farmer's income than the conventional cultivation method, TR with TPM.
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