Journal of Pharmacognosy and Phytochemistry
Vol. 6, Special Issue 6 (2017)
Agronomic performance of new sugarcane (Saccharum spp. hybrid complex) genotypes as influenced by levels of nitrogen
Author(s):
Navnit Kumar and SS Pandey
Abstract:
A field experiment was conducted during 2015–16, to find out the response of three sugarcane (
Saccharum spp. hybrid complex) genotypes to levels of nitrogen at Sugarcane Research Institute, Pusa, Bihar. Among the genotypes, ‘CoP 11437’ showed the highest germination (37.9%), plant population (1, 76,700/ha), dry matter accumulation (38.2 t/ha) and millable canes (1, 22,300/ha) followed by ‘CoP 11438’. Similarly, genotype, ‘CoP 14437’ also recorded significantly higher cane yield (103.7 t/ha) and sugar yield (13.1 t/ha) followed by ‘CoP 11438’ (80.2 t/ha). The maximum pol (18.37%) in juice was obtained with ‘CoP 14438’, which was statistically similar that obtained with ‘CoP 14437’ (18.16%). Genotype ‘CoP 14437’ gave the highest gross returns (2, 64,400/ha), net returns (`1, 69,600/ha), benefit: cost ratio (1.80) and N uptake (284.9 kg/ha). Application of 100% recommended dose of nitrogen significantly increased dry matter accumulation and cane yield; however, plant population and millable canes were significantly increased up to 125% recommended dose of nitrogen. Application of 75% recommended dose of nitrogen being at par with 100% recommended dose of nitrogen resulted in significantly higher pol (18.25%) content in juice over 125% recommended dose of nitrogen. Significantly maximum values of net returns (` 1, 50,100/ha), benefit: cost ratio (1.58) and N uptake (261.4 kg/ha) were recorded at 125% recommended dose of nitrogen. However, significantly higher values of available N (236 kg/ha) was obtained with 100% recommended dose of nitrogen. It was therefore inferred that genotype CoP 14437 along with 125% recommended dose of nitrogen to sugarcane was the most profitable options.
Pages: 1125-1127 | 1676 Views 305 Downloads
Navnit Kumar and SS Pandey. Agronomic performance of new sugarcane (Saccharum spp. hybrid complex) genotypes as influenced by levels of nitrogen. J Pharmacogn Phytochem 2017;6(6S):1125-1127.