Effects of Ridging Times on Agronomic Characteristics, Yield and Feed Value of Corn Hybrid for Silage in Paddy Field Cultivation
2012
Lee, S.M., Kyungpook National University, Sangju, Republic of Korea
This study was carried out to investigate the growth characteristics, yield and chemical compositions of corn hybrids for silage according to ridging times in the paddy field cultivation. The experimental design was arranged in a randomized block design with five treatments and three replication. The ridging times of five treatments were untreated (C), 7 leaves (T1: 31 days), 8 leaves (T2: 37 days), 9 leaves (T3: 42 days) and 10 leaves stage (T4: 48 days after sowing) of silage corn. The ridging treatments (T1, T2, T3, T4) were higher (p less than 0.01) dry matter yield and TDN yield than the unridging treatment (C). However, there were no significant differences among T1, T2, T3 and T4 treatments. The Crude protein content of unridging treatment was decreased (p less than 0.01), while NDF content was increased (p less than 0.01) compared to ridging treatments. The contents of mineral and amino acid in ridging treatments were higher than unridging treatment (p less than 0.05, p less than 0.01). In particular, mineral and amino acid contents were the highest in T4 and T1, respectively (p less than 0.01). Based on the above results, ridging work is to be increased the yield quantity and nutritional value of silage corn. And the best result was obtained in T4 treatment of ridging treatments.
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