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Assessing economic optimal nitrogen requirement of cotton crop using empirical modeling technique.
- Source :
- Journal of Plant Nutrition; 2023, Vol. 46 Issue 15, p3759-3770, 12p
- Publication Year :
- 2023
-
Abstract
- Nitrogen (N) is crucial for plant growth and yield, however excessive N in cotton hampers productivity by excessive vegetative growth, delaying phenological activity, decreasing yield and increase in cost of production. Therefore, it's necessary to find real values of input like N in current fertilizer availability crises. Hence, this experiment was designed to determine the economical optimum dose of N in cotton through empirical modeling during summer season of 2019 and 2020. Experimental treatments were comprised of; 0, 75, 100, 125, 150, 175 and 200 kg N ha<superscript>−1</superscript>. Results revealed that higher seed cotton yield (1222 and 1454 kg ha<superscript>−1</superscript>) was recorded when 200 Kg N ha<superscript>−1</superscript> was applied that was statistically at par with 150 kg N ha<superscript>−1</superscript> (1041 and 1272 in 2019 and 2020 respectively) and 175 kg N ha<superscript>−1</superscript> (1222 and 1386 kg ha<superscript>−1</superscript> in 2019 and 2020 respectively) was applied. A quadratic relationship was also developed by generating a model to regress the value of ratio of cotton yield and benefit cost ratio (BCR) per unit increase of N even beyond 200 kg N ha<superscript>−1</superscript>. Increasing the level from 0 to 200 N kg ha<superscript>−1</superscript> resulted in higher seed cotton yield and BCR (1.54:1 (2019) and 1.35:1 (2020), the curve showed that further increased in N resulted in decrease seed cotton yield and contributed to loss in N. In conclusion, the optimal N level for cotton was found 150 kg N ha<superscript>−1</superscript>, however, the economic optimum return could be achieved at 200 kg N ha<superscript>−1</superscript>. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01904167
- Volume :
- 46
- Issue :
- 15
- Database :
- Complementary Index
- Journal :
- Journal of Plant Nutrition
- Publication Type :
- Academic Journal
- Accession number :
- 166103900
- Full Text :
- https://doi.org/10.1080/01904167.2023.2211610