NPK Fertilization Optimized for Cultivating Chili Peppers for Processing

WU Lidong; LIU Yating; LIN Shuting; LIAO Chengshu; ZHONG Jinxian

doi:10.19303/j.issn.1008-0384.2024.04.010

Volume 39 Issue 4

Apr. 2024

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Article Navigation > Fujian Journal of Agricultural Sciences > 2024 > 39(4): 456-465

WU L D, LIU Y T, LIN S T, et al. NPK Fertilization Optimized for Cultivating Chili Peppers for Processing [J]. Fujian Journal of Agricultural Sciences，2024，39（4）：456−465 doi: 10.19303/j.issn.1008-0384.2024.04.010

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WU L D, LIU Y T, LIN S T, et al. NPK Fertilization Optimized for Cultivating Chili Peppers for Processing [J]. Fujian Journal of Agricultural Sciences，2024，39（4）：456−465 doi: 10.19303/j.issn.1008-0384.2024.04.010

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NPK Fertilization Optimized for Cultivating Chili Peppers for Processing

doi: 10.19303/j.issn.1008-0384.2024.04.010

1.
Sanming Academy of Agricultural Sciences, Sanming, Fujian　365509, China
2.
Fujian Key Laboratory of Crop Genetic Improvement and Innovative Utilization of Mountain Area, Sanming, Fujian　365509, China

Received Date: 2024-01-23
Rev Recd Date: 2024-02-28

Available Online: 2024-05-08

Publish Date: 2024-04-28

Abstract

Abstract

Objective NPK fertilization to maximize the yield and quality of chili peppers for processing was formulated. 【Method】 An experiment of quadratic saturation D-optimal design with three factors of nitrogen, phosphorus, and potassium was applied to optimize the formulation targeted to maximize the yield and quality of Mingjiao 9 chili peppers for further processing. Result Significant effects on chili pepper yield and processing quality were found to be K＞P＞N. The optimal amount of N, P₂O₅, K₂O was 151.10, 59.28, 306.78 kg·hm⁻² to reach the greatest yield, and 148.59, 59.34, 291.66 kg·hm⁻² to achieve the most desirable quality. The combinations of N and P, N and K, and P and K also exerted significant enhancing effects on the chili pepper yield and quality. The optimized fertilizations with a predicted yield exceeding 29,000 kg·hm⁻² at 95% confidence level called for the application N, P₂O₅, and K₂O at 109.24–174.43 kg·hm⁻², 44.40–78.95 kg·hm⁻², and 213.85–287.95 kg·hm⁻², respectively, while for a score above 80 on overall chili pepper quality, the application of 63.08–115.23 kg·hm⁻², 42.26–72.50 kg·hm⁻², and 211.23–292.23 kg·hm⁻², respectively, were determined. Conclusion Experimentally optimized NPK fertilizations for chili pepper cultivation to provide a yield of 29000 kg·hm⁻² and a quality score of 80 or higher were formulated. To accomplish the goal on yield as well as quality, the formulation would include the ranges of 109.24–115.23 kg·hm⁻² on N, 44.40–72.50 kg·hm⁻² on P₂O₅, and 213.85–287.95 kg·hm⁻² on K₂O with a N∶P₂O₅∶K₂O ratio of 1–1.05∶0.41–0.6∶1.96–2.64.
- Chili peppers,
- nitrogen, phosphorus, and potassium,
- yield,
- processing quality

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