Productivity, nitrogen-use efficiency and economics of sweet sorghum (Sorghum bicolour) genotypes as influenced by different levels of nitrogen

KHALED MIRI; D.S. RANA; K.S. RANA; ASHOK KUMAR

doi:10.59797/ija.v57i1.4614

Authors

KHALED MIRI
D.S. RANA
K.S. RANA
ASHOK KUMAR

DOI:

https://doi.org/10.59797/ija.v57i1.4614

Keywords:

Economics, Ethanol yield, Genotypes, Grain yield, Nitrogen-use efficiency, Sweet sorghum.

Abstract

A field experiment was conducted at New Delhi, during rainy seasons of 2009 and 2010 to evaluate 3 sweet

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Table 3. Effect of nitrogen levels and genotypes on nitrogen use efficiency and economics of sweet sorghum production (Data pooled over two years)

Treatment Nitrogen-use efficiencies Cost of Ethanol Gross returns (103 ` /ha) from Net Net PFP* ANUE* CRE* (%) PNUE* cultivation processing Ethanol Fodder Grain Total returns B:C (103 ` /ha) cost yield yield yield ratio (103 ` /ha) (103 ` /ha)

Nitrogen levels (kg/ha)

Control ----10.6 18.0 36.9 6.0 10.8 53.8 25.2 0.88

35.6 12.5 63.5 20.1 10.8 27.8 44.5 7.7 16.2 68.4 36.2 1.12 100 23.2 11.6 63.5 18.6 11 29.8 60.2 9.6 20.7 90.5 49.7 1.22 150 17.2 9.4 46 20.7 11.3 32.7 66.4 10.1 23.4 99.9 55.9 1.27 SEm 1.17 0.67 2.2 1.71 --1.6 0.27 0.36 1.89 1.13 CD (P=0.05) 3.23 1.86 7.5 NS --5.6 0.90 1.17 6.6 3.45

RSSV9 24.2 10.4 54.0 19.8 10.8 25.8 52.6 7.9 16.2 76.8 40.2 1.09 SSV 84 21.0 8.7 47..1 19.0 10.8 16.4 33.2 6.9 15.3 55.4 28.2 1.03 CSH22 SS 30.7 14.5 72.0 20.6 11.6 34.6 70.5 10.1 21.6 102.1 55.9 1.21 SEm 0.5 0.58 2.4 5.6 --1.4 0.37 0.18 1.56 0.8 CD (P=0.05) 1.16 1.27 6.3 ---4.1 1.08 0.72 4.69 2.38

PFP = Partial factor productivity (kg harvest product per kg N applied); ANUE = Agronomic N-use efficiency (kg yield increase per kg N applied); CRE (%) = Crop recoveryefficiency (kg increase in N uptake per kg N applied x100); PNUE = Physiological N-use efficiency (kg yield increase per kg increase in N uptake)

MIRI ET AL. [Vol. 57, No. 1

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