Effects of different N, P, K and Ca levels on tomato yield, quality and fertiliser use efficiency

Feng Qu, Jiao Zhang, Xueqiang Ma, Junzheng Wang, Zixing Gao and Xiaohui Hu
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Feng Qu: Collegeof Horticulture, Northwest A&F University, Yangling, Shaanxi, P.R. China
Jiao Zhang: Collegeof Horticulture, Northwest A&F University, Yangling, Shaanxi, P.R. China
Xueqiang Ma: Collegeof Horticulture, Northwest A&F University, Yangling, Shaanxi, P.R. China
Junzheng Wang: Collegeof Horticulture, Northwest A&F University, Yangling, Shaanxi, P.R. China
Zixing Gao: Collegeof Horticulture, Northwest A&F University, Yangling, Shaanxi, P.R. China
Xiaohui Hu: Collegeof Horticulture, Northwest A&F University, Yangling, Shaanxi, P.R. China

Plant, Soil and Environment, 2020, vol. 66, issue 11, 569-575

Abstract: The experiment aimed to obtain a quadratic regression mathematical model of the comprehensive evaluation score of yield, quality, and four macroelements (N, K, P and Ca). The suitable nutrient solution was chosen and verified via computer simulation of the model and the highest comprehensive score in all treatments. Results showed that P, K and Ca had a positive effect on the comprehensive evaluation value of tomato, whereas N showed a negative effect. The optimal formula calculated using the regression equation could promote high-yield and high-quality tomato. The single-plant yield, soluble protein, vitamin C, total sugar, lycopene, and elemental utilisation of K and Ca in the tomato were 13.93, 78.95, 3.29, 20.98, 51.91, 16.69 and 24.14% higher than those in the special formula treatment of Japanese Yamazaki tomato, respectively. In summary, the optimal nutrient solution formula of tomato cultivation was obtained, in which the N, P, K and Ca levels were 24.83, 4.50, 9.49 and 5.73 mmol/L, respectively.

Keywords: Solanum lycopersicum L.; soilless cultivation; vegetable management; comprehensive analysis; greenhouse (search for similar items in EconPapers)
Date: 2020
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:66:y:2020:i:11:id:498-2020-pse

DOI: 10.17221/498/2020-PSE

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