Agronomic and silage quality traits of forage sorghum cultivars in 1995 (1997)

Abstract

Agronomic and silage quality traits were measure d for 37 forage sorghum cultivars and three grain sorghum hybrids. The 1995 growing season was characterized by above average rainfall in the spring and early summer, and a hard freeze on September 22. At the time of the freeze, 20 cultivars had reached the early-milk to earlydough stage, 12 were in the bloom stage, and the remaining eight were still in the early-to late-boot stage . The late planting date and low plant populations resulted in below-normal whole-plant D M and grain yields. Plant height s for the grain sorghums were near normal, but the forage sorghums were well below expected plant heights. The preensiled, whole-plan t DM contents of the 37 forage sorghums ranged from 23.0 to 39.9%. As expected , the silage nutritive value traits of CP, NDF, and ADF were most favorable for the three grain sorghum hybrids and least favorable for the eight forage sorghum hybrids that were still in the boot stage when the freeze occurred. SummaryAgronomi c and silage quality traits were measure d for 37 forage sorghum cultivars and three grain sorghum hybrids. The 1995 growing season was characterized by above average rainfall in the spring and early summer, and a hard freeze on September 22. At the time of the freeze, 20 cultivars had reached the earlymilk to early-dough stage, 12 were in the bloom stage, and the remaining eight were still in the early-to late-boot stage . The late planting date and low plant populations resulted in below-normal whole-plant D M and grain yields. Plant height s for the grain sorghums were near normal, but the forage sorghums were well below expected plant heights. The preensiled, whole-plan t DM contents of the 37 forage sorghums ranged from 23.0 to 39.9%. As expected , the silage nutritive value traits of CP, NDF, and ADF were most favorable for the three grain sor ghum hybrids and least favorable for the eight forag e sorghum hybrids that were still in the boot stage when the freeze occurred.

Yield and Quality Feature of Some Silage Sorghum and Sorghum-Sudangrass Hybrid Cultivars in Ecological Conditions of Kırşehir Province

“…But Rox cultivar was in the statistically low NDF group. The two-year average of NDF ratio (51.2%) obtained in this study was similar to that of Siefers et al (1997) but it was lower than those reported by Millner et al (2011), Nazlı et al (2013 and Karadağ and Özkurt (2014), Delaying the harvest time of sorghum increases the ratio of cellulosic structures, a cell wall component. The differences among the NDF ratios reported by different researchers may be due to the differences in the ecologies of research areas, as well as the harvesting during different maturity periods.…”

The Determination of Forage Yield and Quality of Some Silage Sorghum Cultivars in Ecological Conditions of Uşak Province

“…In this research, the lowest ADF ratios were determined Nutri Honey (36.64%) and Greengo (36.68%) cultivars, while the highest ADF ratios were found in Sugar Graze II (42.41%) and Rox (41.81%) cultivars (Table 3). In studies on sorghum, the ADF ratios were found to be 27.3-36.5% by Siefers et al (1997), 32.5-34.6% by Kozlowski (2006, 24.9-32.6% by Canbolat (2012), 34.1-40.1% by Tosunoglu (2014), 36.4-45.1% by Akdeniz et al (2003), 36.89-49.65% by Ozmen (2017), 30.1-37.4% by Kır and Dursun Şahan (2019). The difference between the ADF ratios obtained in this study and the ADF ratios in the other studies was probably related to the differences in cultivars used and ecologies of experimental sites.…”

“…Nutri Honey (56.51%) and Greengo (55.79%) cultivars had the lowest NDF ratios in this research (Table 3). In studies on sorghum, the NDF ratios were found to be 45.1-58.0% by Siefers et al (1997), 55.7-59.3% by Kozlowski (2006, 66.2-75.9% by Karadas (2008), 50.3% by Marsalis et al (2010), 46.6-55.9% by Canbolat (2012), 62.7-72.1% by Tosunoglu (2014, 62.5-74.0% by Akdeniz et al (2003), 55.81-76.11% by Ozmen (2017, 44.6-57.2% by Kir and Dursun Sahan (2019). The ADF and NDF ratios are the best indications of the energy capacity of a forage.…”

The Effect of a Formic Acid-Based Preservative on Structural Carbohydrates and Nutritive Value of Low Dry Matter Sweet Sorghum Silages

“…They established that the fresh forage yield was 80 t with the total DM of 19.3 t ha -1 . Through a study carried out, with 37 sorghum cultivars, Siefer and Bolsen (1997) explained that DM and DM yield ranged between 23-39% and 990-1080 kg ha -1 , seed yield was approximately at 24 kg ha -1 . When chemical characteristics of fresh sorghum taken into account the findings were in agreement with the results reported by Sonon and Bolsen (1996).…”