Effects of Ridging Times on Agronomic Characteristics, Yield and Feed Value of Corn Hybrid for Silage in Paddy Field Cultivation

Abstract

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<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<0.01), while NDF content was increased (p<0.01) compared to ridging treatments. The contents of mineral and amino acid in ridging treatments were higher than unridging treatment (p<0.05, p<0.01). In particular, mineral and amino acid contents were the highest in T4 and T1, respectively (p<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.

Temperature and microbial changes of corn silage during aerobic exposure

“…The chemical compositions of KW and PI hybrids were in the expected range for corn grown in South Korea [9,10,24,25]. In general, the differences of silage chemical compositions among hybrids are caused by those of forages [12,13].…”

Assessment of planting soil temperature and growing degree day impacts on silage corn (Zea mays L.) biomass

“…One of the efforts to achieve these goals has been made through a double cropping system combing highly productive silage corn (Zea mays L) and winter annuals such as Italian ryegrass (Lolium multiflorum L.), cereal rye (Secale cereale L.), oats (Avena sativa L.) or barely (Hordeum vulgare L.) [1]. Silage corn has taken the main value in the forage cropping system because of the high energy concentrated biomass accumulation potential [2][3][4].…”

“…Corn planting has been anecdotally recommended at the time of full bloom of plum (Prunus domestica L.) in South Korea between mid-April and early May [3][4]. However, yearly fluctuating weather and global warming conditions make some recommendations uncertain.…”