Effect of the combination of nitrapyrin and gamma-aminobutyric acid on soil nitrogen transformation characteristics and rice yield

Furong Xiao, Chen Feng, Dongpo Li, Lili Zhang, Yonghua Li, Yandi Du, Yan Xue, Ping Gong, Yuchao Song, Ke Zhang and Yiji Zhang
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Furong Xiao: Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, P.R. China
Chen Feng: Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, P.R. China
Dongpo Li: Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, P.R. China
Lili Zhang: Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, P.R. China
Yonghua Li: North Huajin Chemical Industries Group Corporation, Panjin, P.R. China
Yandi Du: Chaoyang County Agricultural Technology Extension Center, Chaoyang, P.R. China
Yan Xue: Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, P.R. China
Ping Gong: Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, P.R. China
Yuchao Song: Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, P.R. China
Ke Zhang: Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, P.R. China
Yiji Zhang: Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, P.R. China

Plant, Soil and Environment, 2024, vol. 70, issue 8, 509-522

Abstract: When 2-chloro-6-(trichloromethyl) pyridine (nitrapyrin) is applied alone, it typically does not significantly increase crop yield. Therefore, we combined gamma-aminobutyric acid (GABA) with nitrapyrin to address the limitations of nitrapyrin in enhancing yield. We conducted indoor incubation experiments and pot experiments in Chernozem and Calcic Kastanozem, respectively. The results demonstrated that GABA exerted an influence on the effectiveness of nitrapyrin by altering its degradation rate. In Chernozem, GABA accelerated nitrapyrin degradation, whereas, in Calcic Kastanozem, the results were the opposite. The pot experiment results showed that the combination of nitrapyrin and GABA increased rice total biomass by 5%, grain yield by 18 ± 2%, and plant nitrogen (N) uptake by 9 ± 1% compared to nitrapyrin applied alone. The increase in yield was attributed to the combined effect of nitrapyrin and GABA, which elevated root biomass and leaf area. In contrast, the effect of GABA on yield through altering the degradation rate of nitrapyrin was weaker. Therefore, the combination of nitrapyrin and GABA combined with urea increases rice yields in Chernozem and Calcic Kastanozem. The aim of this endeavour was to foster the development of a novel fertiliser product that offers both favourable agronomic outcomes and environmental benefits.

Keywords: yield increase limitations; biostimulant; nutrition; nitrogen use efficiency; agronomic benefits (search for similar items in EconPapers)
Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:70:y:2024:i:8:id:95-2024-pse

DOI: 10.17221/95/2024-PSE

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