Optimizing Tomato Cultivation: Impact of Ammonium–Nitrate Ratios on Growth, Nutrient Uptake, and Fertilizer Utilization

Chengshun Wang, Gang Wu, Hong Wang, Jiabao Wang, Manman Yuan, Xiong Guo, Chuang Liu, Suzhi Xing (), Yixiang Sun () and Mir Moazzam Ali Talpur
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Chengshun Wang: College of Resources and Environment, Anhui Science and Technology University, Fengyang 233100, China
Gang Wu: Key Laboratory of Nutrient Cycling and Arable Land Conservation of Anhui Province, Soil and Fertilizer Research Institute, Anhui Academy of Agricultural Sciences, Hefei 230031, China
Hong Wang: College of Resources and Environment, Anhui Science and Technology University, Fengyang 233100, China
Jiabao Wang: Key Laboratory of Nutrient Cycling and Arable Land Conservation of Anhui Province, Soil and Fertilizer Research Institute, Anhui Academy of Agricultural Sciences, Hefei 230031, China
Manman Yuan: Key Laboratory of Nutrient Cycling and Arable Land Conservation of Anhui Province, Soil and Fertilizer Research Institute, Anhui Academy of Agricultural Sciences, Hefei 230031, China
Xiong Guo: Key Laboratory of Nutrient Cycling and Arable Land Conservation of Anhui Province, Soil and Fertilizer Research Institute, Anhui Academy of Agricultural Sciences, Hefei 230031, China
Chuang Liu: Key Laboratory of Nutrient Cycling and Arable Land Conservation of Anhui Province, Soil and Fertilizer Research Institute, Anhui Academy of Agricultural Sciences, Hefei 230031, China
Suzhi Xing: College of Resources and Environment, Anhui Science and Technology University, Fengyang 233100, China
Yixiang Sun: Key Laboratory of Nutrient Cycling and Arable Land Conservation of Anhui Province, Soil and Fertilizer Research Institute, Anhui Academy of Agricultural Sciences, Hefei 230031, China
Mir Moazzam Ali Talpur: College of Agricultural Science and Engineering, Hohai University, Nanjing 210098, China

Sustainability, 2024, vol. 16, issue 13, 1-12

Abstract: Tomatoes, an essential crop in controlled environments, benefit significantly from the careful use of nitrogen fertilizers, which are crucial for improving both yield and nitrogen efficiency. Using a tomato pot experiment arranged in a facility greenhouse, five treatments were established as follows: a control excluding the application of nitrogen fertilizer (C), and applications of ammonium nitrogen and nitrate nitrogen with nitrogen mass ratios of 0:100 (A 0 N 100 ), 25:75 (A 25 N 75 ), 50:50 (A 50 N 50 ), 75:25 (A 75 N 25 ), and 100:0 (A 100 N 0 ), to study the effects of different ratios of nitrogen mass on tomato yield, quality, nutrient accumulation, and nitrogen fertilizer utilization. The results showed that compared with C, the different ammonium–nitrate ratios significantly increased the yield, dry matter mass, N, P, and K accumulation, soluble solids, soluble sugars, and vitamin C content (Vc) of the tomatoes. Among all the treatments, A 75 N 25 tomatoes had the highest dry matter accumulation, nitrogen, phosphorus, and potassium accumulation in fruits, soluble sugar, and soluble solids content. The differences in tomato yield and nitrogen fertilizer utilization between A 75 N 25 and A 100 N 0 were insignificant but their values were significantly higher than those of the other treatments. A 75 N 25 had the highest nitrogen fertilizer utilization rate, 42.1% to 82.3% higher than C, A 25 N 75 , and A 50 N 50 . Hence, an ammonium-to-nitrate nitrogen mass ratio of 75:25 optimized tomato yield and quality in a controlled environment while minimizing nutrient loss.

Keywords: tomato; ammonium nitrogen; nitrate nitrogen; yield; quality (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2024
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