Productivity, Nutrient Uptake and Profitability of Sweet Sorghum -Mustard Cropping System under Different Levels of Nitrogen

Abstract

A field experiment was conducted during summer and winter seasons of 2009-10 and 2010-11 at Research Farm of Division of Agronomy, Indian Agricultural Research Institute, New Delhi to study the effects of nitrogen levels applied to sweet sorghum genotypes on productivity, nutrient uptake and profitability of sweet sorghum-mustard cropping system. Pooled analysis of data indicated that there was significant increase in green biomass, stalk, juice, brix (%), fermentable sugar and estimated ethanol yield due to application of nitrogen up to 100 kg N ha -1 over control. The highest grain yield (2.7 t ha -1 ) and fodder yield (15.6 t ha -1 ) were recorded with application of 150 kg N ha -1 . Pooled analysis of data showed that hybrid 'CSH 22 SS' recorded the highest stalks (85.6 t ha -1 ), juice (30 t ha -1 ) , fermentable sugar (4.6 t ha -1 ) and estimated ethanol yield ( 2.6 kl ha -1 ). On an average grain yield (2.5 t ha -1 ) of hybrid 'CSH 22 SS' was 31.5% and 45.8% higher than 'RSSV 9' and 'SSV 84', respectively. Application of 150 kg N ha -1 to preceding sweet sorghum produced the highest values of plant height, number of branches plant -1 , number of siliqua plant -1 , number of seeds siliqua -1 , siliqua length, seed yield, biological yield and oil yield. Oil percent in mustard declined as nitrogen dose applied to preceding sweet sorghum increased. Residual effect of sweet sorghum genotypes on performance of succeeding mustard was not significant. Productivity, nutrient uptake and economics of sweet sorghum-mustard cropping system significantly increased due to application of nitrogen up to 150 kg ha -1 . The highest sorghum equivalent yield (6.2 t ha -1 ), net returns ( 66300= US $ 1326) and net benefit cost ratio (2.8) were recorded when 150 kg N ha -1 was applied. Among genotypes, including of CSH 22 SS hybrid significantly enhanced productivity, nutrient uptake and economics of system.

Effect of nitrogen fertilization on growth, yield and ethanol production of sweet sorghum (Sorghum bicolor (L. Moench)

“…locations .This was in agreement with the findings of Miri and Rana (2014). It worth mentioning that genotype RSSS.11 except for plant height at shambat location recorded the highest growth parameters(number of green leaves per plant, stalk diameter and leaf area )compared to genotype Baladi which has been reflected in higher stalk yield of genotype RSSS.11 over genotype Baladi .…”

Effect of Nitrogen Fertilization on the Productivity and Sensitivity of Two Sweet Sorghum Varieties to Pink Stem Borer (Sesamia cretica led.) Infestation

“…Such effect may be due to the same effect of nitrogen rate on sucrose, reducing sugars will be discussion later and juice yield as discussed before. These results are in line with those of Byrt et al (2011) andMiri andRana (2014).…”

“…in the 1 st and 2 nd seasons, respectively. These findings are in harmony with those of Abd El-Razek Miri and Rana (2014). A gradual and substantial increase in syrup yield as nitrogen dressing increased in 2014 season, while, these trend in 2013 season was insignificant (Table 4).…”

“…The excellence of Brandes variety may be due to genetic causes acted well under the dominant environments, meantime, this variety was relatively resistant to borer damage as mentioned before (Table 2). These finding are in harmony with those reviewed by Abd El-Razek and Besheit (2008); Nour, Sara (2010); ElGeddawy, Dalia et al (2014) and Miri and Rana (2014) who indicated a marked differences among sorghum varieties with regard to stalk yield and stalk components.…”

Qualidade Do Caldo Para Produção De Etanol Em Cultivares De Sorgo Sacarino Sob Adubação Nitrogenada

“…Variedades de sorgo sacarino diferem muito no potencial de produção de etanol e qualidade do caldo 390 2012) e que têm apresentado boa qualidade de suco (Miri & Rana, 2014 …”