The current study aims to evaluate integrated nutrient
management on cane production and nutrient use efficiency of applied nitrogen,
phosphorous, and potassium in sugarcane in terms of agronomic efficiency and
physiological use efficiency.
Enhancing nutrient use efficiency beyond the typical 50%
threshold is crucial for improving sugarcane production and juice quality,
while also reducing dependency on synthetic fertilizers and mitigating
environmental impact. Nutrient use efficiency (NUE) measures how well plants
can absorb and use nutrients to produce their highest possible yields. Thus,
the NUE idea encompasses three crucial processes in plants: nutrient
absorption, assimilation, and utilisation. To tackle this challenge, a field
experiment was conducted at the Kalyanpur research farm, Dr. Rajendra Prasad
Central Agricultural University, Pusa, Bihar. Using a randomized block design
with three replications, the experiment involved the sugarcane variety CoP-112.
Although the treatments showed no significant impact on germination percentage,
plant height, cane length, diameter, and individual cane weight, the
combination of the recommended dose of fertilizers (RDF) with vermicompost and
biofertilizer (Azotobacter + PSB) at
a rate of 4 kg/ha resulted in the highest millable cane (125.4×103/ha) and cane
yield (94.0 t/ha). This combination led to increases of 78% and 24% over the
sole prescribed dose of fertilizer and the absolute control, respectively. No
significant differences were observed in juice quality among the treatments.
The highest agronomic use efficiency was recorded in plots treated with RDF +
vermicompost + Azotobacter + PSB,
showing a 75% improvement over plots receiving only the recommended dose of
fertilizer. These findings highlight the effectiveness of integrated nutrient
management as the optimal strategy for promoting sustainable sugarcane
production. The study demonstrated the effectiveness of integrating
vermicompost and biofertilizer (Azotobacter
+ PSB) with the recommended dose of fertilizers for enhancing sugarcane
yield and nutrient utilization efficiency.
Author(s) Details
Sanjeew Kumar Sinha
Department of Soil Science, Regional Research Station, Madhopur, West
Champaran, Bihar-845454, India.
Ajeet Kumar
Department of Soil Science, Sugarcane Research Institute, Dr. Rajendra
Prasad Central Agricultural University, Pusa (Samastipur)-848125, Bihar, India.
Brajesh Kumar
Department of Soil Science, Post Graduate College of Agriculture, RPCAU,
Pusa Samastipur, Bihar, India.
Amrita Kumari
Bihar Agricultural University, Sabour, Bhagalpur -813210, India.
A. K. Singh
Dr. Rajendra Prasad Central Agricultural University, Pusa
(Samastipur)-848125, Bihar, India.
Please see the book here:- https://doi.org/10.9734/bpi/crpas/v3/1426
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