A Comparative Study on the Growth Characteristics and Nutritional Components of Corn Hybrids for Silage at Paddy Field Cultivation

Abstract

This study was carried out to know adaptability and growth characteristics, yield, chemical compositions and nutrition yield of corn hybrids for silage at paddy field. The field experiments were conducted at Sangju province for one year (2009). The experimental design was arranged in a randomized block design with three replication. The treatments consisted of eleven corn hybrids. The planting date was on 1 May and harvested at 24 August. Stem diameter, stem hardness and number of ear were higher in P32P75 than other varieties. Ear height, dead leaf and green degree were highest in NC + 7117, but number of root system and Brix (B〬 ) were higher in P3394 than other varieties. Crude protein and crude fat (EE) were highest in P32K61 and P31P41, respectively (P<0.01). NDF and ADF were highest in KPO and KIO, respectively, but no significant differences were found among the varieties. Total mineral contents were the highest in Kwangpyongok (9,775 mg/kg), and P3394 (6,651 mg/kg) was the lowest as compared to other varieties (P<0.01). Crude protein yield, crude fat yield and mineral yield were highest in P3156, P31P41 and KPO, respectively (P<0.01). Total composition amino acid and total fatty acid were the highest in P32K61 and KIO, respectively (P<0.01). Yields of crude protein, fatty acid, composition amino acid and TDN were the highest in P3156 (P<0.01). But yields of crude protein and mineral were the highest in P31P41 and KPO, respectively (P<0.01). Total digestible nutrient (TDN) was higher in order of P3156 > NC + 7117 > P31N27 > KPO > P32K61 > P32T83 > P32P75 > P31P41 > P3394 > P32W86 > KIO. Based on the above results, corn hybrid varieties could be recommended in P3156, NC + 7117 and P31N27 for growth characteristics, quantitative production and nutrition yield.

Effects of Seeding Dates on Yield and Feed Value of Italian Ryegrass in Paddy Field Cultivation

“…Generally it is being reported that mineral content is affected by weather conditions, soil conditions, manure conditions and other various conditions (Reid et al, 1970;Kim, 1991;Lee and Lee, 2010). However, it was a higher yield than the reports from Kim et al (2012) which reported that mineral content in 10 varieties of silage corn had a content range of 6,790 ~9,775 mg/kg, and Jeon et al (2012) which reported that the 9 varieties of Sorghum × Sudangrass hybrids had a content range of 6,222.6~15,020.5 mg/kg.…”

“…~6,499 mg/100g in barley (Lee and Kim, 2013), 3,653~5,433 mg/100g in silage corn (Kim et al, 2012), and 2,324~3,908 mg/100g in Sorghum × Sudangrass hybrids (Jeon et al, 2012). Therefore, it was shown that compared to barley, corn, and sorghum × sudangrass hybrids, Italian ryegrass had significantly higher amino acid content.…”

“…Although the T1 treatment has a lower crude protein, crude fat (Table 5), mineral (Table 6) and amino acid content (Table 7) than T2, T3, T4, and T5, but the high nutrition yield of T1 is caused by the result of the significantly higher dry matter yield. Kim et al (2012) reported that even if crude protein, crude fat, and minerals are higher, nutrition yield will be lower if dry matter yield is low. It is reported that the yield of Italian ryegrass which is grown after rice harvest at the paddy is higher as seeding date is sooner (Kim et al, 2009).…”

Study on Nutritive Values of Whole Crop Barley Varieties Grown in a Paddy Field

“…그리고 중부지역에 재배가 용이하고 조숙성인 '소만' 품종을 개발하였으며, 최근에는 줄기에 잎귀가 없어 부드럽고 밀식에 강한 '다미' 품종을 개발 보급 하여 많은 축산 농가들이 이용하고 있다 (Kim et al, 2012c;. 또한 우리나라 사료작물용 으로 재배 이용하는 대표적인 청보리 품종은 위에서 설명 한 영양, 우호, 유연, 소만, 다미 품종을 들 수 있다.…”

Effects of seeding dates on dry matter yield and feed values of whole-crop barley cultivated in a paddy field

“…Thus, considerable information on amino acid profiles is required for domestically produced forages. In this regard, our laboratory has previously reported on the amino acid profiles of corn silage [30] and sorghum × sudangrass hybrids [31].…”