Identifying the critical nitrogen fertilizer rate for optimum yield and minimum nitrate leaching in a typical field radish cropping system in China

Zhang, Jiajia; He, Ping; Ding, Wencheng; Ullah, Sami; Abbas, Tanveer; Li, Mingyue; Ai, Chao; Zhou, Wei

doi:10.1016/j.envpol.2020.115004

Cited by 37 publications

(20 citation statements)

References 36 publications

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“…Thus, beyond a threshold level, adding inorganic N fertilizer does not result in higher yields, and even reduce the NUE conversely. In this study, the AEN, as a NUE indicator, was higher under moderate N rate than that under the highest N rate under zero chicken manure treatment (Figure S1), which is consistent with previous results indicating that NUE decreases with increasing N input [40]. In general, local farmers in present experimental site usually apply up to 410 kg N ha −1 to cherry tomato fields, which is 54% higher than the recommended application rate (communicated with local agricultural extension bureau).…”

Section: Environmental Concerns Of High N Application Rate and The Po...supporting

confidence: 93%

“…In general, local farmers in present experimental site usually apply up to 410 kg N ha −1 to cherry tomato fields, which is 54% higher than the recommended application rate (communicated with local agricultural extension bureau). Thus, such higher doses of inorganic N in cherry tomato fields have resulted in lower NUE [40]. The existing literature suggests that a large portion of N lost to the environment is the key reason for low NUE, which ultimately results in severe pollution of air and water, especially in China where more than 95% of inorganic N fertilizers are urea and ammonium-N [2,41,42].…”

Section: Environmental Concerns Of High N Application Rate and The Po...mentioning

confidence: 99%

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Effect of Combined Application of Chicken Manure and Inorganic Nitrogen Fertilizer on Yield and Quality of Cherry Tomato

Tao

Liu

et al. 2022

Agronomy

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Unreasonable application of inorganic nitrogen (N) fertilizer on cherry tomatoes (Solanum lycopersicum var. cerasiforme) has resulted in serious environmental threats. The advantages of application of organic manure combined with inorganic N fertilizer for vegetable production systems have been reported widely, but there are still few studies on cherry tomato production. Therefore, this study aims to determine the impact of a combined application of organic manure (in form of chicken manure at different application rate of 0 and 40 t ha−1) with inorganic N fertilizer (in form of urea at various N application rates of 0, 160 and 320 kg N ha−1) on the fruit yield and quality of cherry tomato across two seasons. Results showed that inorganic N application exhibited positive effects on fruit yield and its associated components of cherry tomato. However, there was no significant difference in terms of fruit yield and its associated components between the two N rates of inorganic N (160 and 320 kg N ha−1), indicating that fruit yield is not improved significantly when the N application rate exceeds some threshold. Under chicken manure application treatments, however, an increased N rate did not show a positive effect on fruit yield. Importantly, chicken manure application has greatly increased fruit yield and fruit quality (represented by membership function indicator) by 43% and 23%, respectively in comparison with zero manure application. In particular, the soluble protein and titratable acid were increased by 124% and 118%, respectively. Overall, these results suggested that chemical N fertilizers could be largely replaced with chicken manure. Furthermore, the combined application of organic with inorganic N fertilizers seems to be a promising management practice for reducing the reliance on use of inorganic N fertilizer, while mitigating the environmental burden for cherry tomato production.

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Section: Environmental Concerns Of High N Application Rate and The Po...supporting

confidence: 93%

Section: Environmental Concerns Of High N Application Rate and The Po...mentioning

confidence: 99%

Effect of Combined Application of Chicken Manure and Inorganic Nitrogen Fertilizer on Yield and Quality of Cherry Tomato

Tao

Liu

et al. 2022

Agronomy

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“…At present, it is grown almost all over the world. The total radish production represents roughly 2% of the global vegetable production (Zhang et al, 2021). Radish is typically grown very fast during all seasons.…”

Section: Plant Materialsmentioning

confidence: 99%

Effect of microplastics on silty loam soil properties and radish growth

Botyanszká

Šurda

Vitková

et al. 2022

Journal of Hydrology and Hydromechanics

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Microplastics (particles of plastics <5 mm) affect the physical, biological and hydrological properties of agricultural soil, as well as crop growth. We investigated the effect of the addition of three microplastics (high-density polyethylene (HDPE), polyvinyl chloride (PVC), and polystyrene (PS)) at a concentration of 5% (w/w) to a silty loam soil on selected soil properties and growth of radish (Raphanus sativus L. var. sativus). Changes in the soil properties and radish growth in three microplastic treatments were compared with the control. Soil properties (bulk density, hydraulic conductivity, sorptivity, water repellency) were estimated for each treatment at the beginning and at the end of the radish growing period (GP). The bulk density was significantly lower in the HDPE and PVC treatments compared to the control within the measurement at the beginning of the GP and in all microplastic treatments compared to the control at the end of the GP. The values of hydraulic conductivity and water sorptivity did not show significant differences between any treatments within the measurement at the beginning of GP, but they were significantly higher in the HDPE treatment compared to the control at the end of the GP. The growth of radish was characterized by the plant biomass and effective quantum yield of Photosystem II (Y (II)). We did not find a statistically significant difference in the total biomass of radish between any of the experimental treatments, maybe due to used concentration of microplastics. The mean value of Y (II) was significantly higher in all microplastic treatments compared to control only within the last measurement at the end of the GP. A statistically significant change of Y(II) in all microplastic treatments may indicate functional shift in soil properties; however, the measured values of the soil characteristics have not shown the significant changes (except for the bulk density values in all microplastic treatments and hydraulic conductivity together with sorptivity in HDPE treatment within the measurement at the end of GP).

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“…Berdasarkan konstanta tersebut nilai konstanta kecepatan pelepasan N pada perlakuan Kujang sebesar 0.0349 hari -1 dan nilai terendah dimiliki oleh perlakuan granul sebesar 0.0256 hari -1 . Data mengenai laju tersebut dapat dimanfaatkan untuk meminimalisasi kehilangan nitrogen di dalam tanah dengan menyesuaikan terhadap fase pertumbuhan tanaman (Zhang et al, 2021). Faktor utama yang diduga berpengaruh terhadap pelepasan N di dalam penelitian ini adalah kondisi tanah yang tergenang.…”

Section: Laju Dan Pola Pelepasan Nitrogenunclassified

Dinamika Pelepasan Nitrogen Empat Jenis Pupuk Urea Pada Kondisi Tanah Tergenang

et al. 2021

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Pupuk urea merupakan sumber hara nitrogen (N) yang paling banyak digunakan di Indonesia, termasuk pada lahan sawah. Urea merupakan pupuk N yang larut air sehingga penggunaan urea di sawah perlu dikaji dalam hubungannya dengan pelepasan pupuk. Di dalam penelitian ini digunakan urea dengan formulasi berbeda yaitu pupuk urea Kujang dan Pupuk Sriwijaya (Pusri) yang merupakan urea konvensional dan urea prill dan granul yang merupakan urea modifikasi yang mengandung formaldehida masing-masing 0.10 dan 0.50%. Tujuan penelitian ini adalah untuk mengevaluasi pelepasan N dari tipe urea konvensional dan urea yang diberi formaldehida pada kondisi tanah tergenang. Metode penelitian yang digunakan adalah inkubasi dan pencucian. Inkubasi dilakukan selama 7, 14, 28, 45, 60, dan 90 hari serta dilakukan pencucian pada setiap akhir masa inkubasi. Hasil pencucian ditetapkan kandungan amonium dan nitrat. Hasil penelitian menunjukkan bahwa pelepasan N dalam bentuk amonium dan nitrat antar perlakuan pupuk urea tidak berbeda nyata. Hasil total N tercuci menunjukkan nilai paling tinggi diperoleh oleh urea granul sebesar 78.0 mg tabung-1, kemudian disusul oleh urea prill 75.2 mg tabung-1, urea kujang sebesar 71.5 mg tabung-1, dan urea pusri sebesar 68.4 mg tabung-1. Berdasarkan hasil persamaan first order kinetic, diperoleh nilai pelepasan maksimum dan konstanta kecepatan. Nilai pelepasan maksimum tertinggi dimiliki oleh urea granul sebesar 94.6 mg tabung-1, kemudian urea prill sebesar 88.3 mg tabung-1, urea Pusri sebesar 82.3 mg tabung-1, dan urea Kujang sebesar 79.2 mg tabung-1. Sementara untuk nilai konstanta kecepatan, konstanta kecepatan tertinggi diperoleh pada urea kujang sebesar 0.0349 hari-1, kemudian dilanjutkan oleh urea prill dan pusri sebesar 0.0256 hari-1, dan urea granul sebesar 0.0253 hari-1. Hasil penelitian menunjukkan bahwa urea yang diperlakukan dengan formaldehida terutama dalam bentuk granul cenderung memiliki kemampuan untuk memperlambat proses pelepasan N yang ditunjukkan dengan nilai konstanta kecepatan pelepasan N yang paling rendah.

show abstract

Identifying the critical nitrogen fertilizer rate for optimum yield and minimum nitrate leaching in a typical field radish cropping system in China

Cited by 37 publications

References 36 publications

Effect of Combined Application of Chicken Manure and Inorganic Nitrogen Fertilizer on Yield and Quality of Cherry Tomato

Effect of Combined Application of Chicken Manure and Inorganic Nitrogen Fertilizer on Yield and Quality of Cherry Tomato

Effect of microplastics on silty loam soil properties and radish growth

Dinamika Pelepasan Nitrogen Empat Jenis Pupuk Urea Pada Kondisi Tanah Tergenang

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