Vol. 8, Issue 3 (2019)
Effect of genotypes and nitrogen levels on productivity of sugarcane (Saccharum spp. hybrid complex) ratooncrop
Author(s): Navnit Kumar
Abstract: A field experiment was conducted during the spring season of 2015-16 on sandy loam soil of Pusa, to study the effect of 3 genotypes of sugarcane (Saccharum spp hybrid complex) (‘CoP 11436’, ‘CoP 11437’ and ‘CoP 08436’) and 3 levels of nitrogen (75, 100 and 125% recommended dose) on productivity and quality of sugarcane ratoon crop. The soil of the experimental field was a sandy loam in texture, alkaline in reaction (pH 8.2), low in organic carbon (0.48%), low in available N (220 kg/ha), medium in available P (11.6 kg/ha) and low in available K (108 kg/ha). The experiment was laid out in a factorial randomized block design with 3 replications. Results indicated that the genotype ‘CoP 11437’ showed better performance with significantly higher plant population (1, 90, 800/ha) and drymatter accumulation (31.0 t/ha). Significantly higher leaf area index (4.05), cane diameter (2.08 cm), single cane weight (783 g/plant) and cane yield (84.3 t/ha) was also obtained with the genotype ‘CoP 11437’ which was statistically comparable to ‘CoP 08436’. Similarly significantly higher brix (20.1%), pol (17.81%), commercial cane sugar (12.32%) and sugar yield (10.38%) were obtained with ‘CoP 11437’. Application of 125% recommended dose of nitrogen improved drymatter accumulation, leaf area index, cane yield and sugar yield. Though the differences between 100 and 125% recommended dose of nitrogen were found to be non-significant.
How to cite this article:
Navnit Kumar. Effect of genotypes and nitrogen levels on productivity of sugarcane (Saccharum spp. hybrid complex) ratooncrop. J Pharmacogn Phytochem 2019;8(3):11-13.