Combining controlled-release urea and normal urea with appropriate nitrogen application rate to reduce wheat stem lodging risk and increase grain yield and yield stability

ZHANG, Guang-xin; Zhao, Dehao; Fan, Hengzhi; LIU, Shi-ju; Liao, Yuncheng; Han, Jie

doi:10.1016/j.jia.2023.02.039

Cited by 9 publications

(2 citation statements)

References 50 publications

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“…(2017) proposed a fertilization strategy of mixing controlled-release urea with 30% ordinary urea, which could increase the net profit by 15.4%−21.8% compared with ordinary urea treatment with the equal N rate. Zhang et al. (2023) showed that a mixture of CRNF with urea could increase wheat yield by 3.12%−14.62% under different N application rates.…”

Section: Discussionmentioning

confidence: 99%

“…To control the fertilizer cost, Zheng et al (2017) proposed a fertilization strategy of mixing controlled-release urea with 30% ordinary urea, which could increase the net profit by 15.4%−21.8% compared with ordinary urea treatment with the equal N rate. Zhang et al (2023) showed that a mixture of CRNF with urea could increase wheat yield by 3.12%−14.62% under different N application rates. Farmaha and Sims (2013b) also believed that the application of the mixed fertilizer with CRNF and urea was beneficial to improve the economic returns of producers.…”

Section: Discussionmentioning

confidence: 99%

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Split application of polymer-coated urea combined with common urea improved nitrogen efficiency without sacrificing wheat yield and benefits while saving 20% nitrogen input

Ma,

Tao,

Jia

et al. 2024

Front. Plant Sci.

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Controlled-release nitrogen fertilizer (CRNF) has been expected to save labor input, reduce environmental pollution, and increase yield in crop production. However, the economic feasibility is still controversial due to its high cost. To clarify the suitable application strategy of CRNF in promoting the yield, nitrogen use efficiency and income on wheat grown in paddy soil, four equal N patterns were designed in 2017−2021 with polymer-coated urea (PCU) and common urea as material, including PCU applied once pre-sowing (M1), PCU applied 60% at pre-sowing and 40% at re-greening (M2), 30% PCU and 30% urea applied at pre-sowing, 20% PCU and 20% urea applied at re-greening (M3), and urea applied at four stage (CK, Basal:tillering:jointing:booting=50%:10%:20%:20%). In addition, M4−M6, which reduced N by 10%, 20% and 30% respectively based on M3, were designed in 2019−2021 to explore their potential for N-saving and efficiency-improving. The results showed that, compared with CK, M1 did not significantly reduce yield, but decreased the average N recovery efficiency (NRE) and benefits by 1.63% and 357.71 CNY ha−1 in the four years, respectively. M2 and M3 promoted tiller-earing, delayed the decrease of leaf area index (LAI) at milk-ripening stage, and increased dry matter accumulation post-anthesis, thereby jointly increasing spike number and grain weight of wheat, which significantly increased yield and NRE compared with CK in 2017−2021. Due to the savings in N fertilizer costs, M3 achieved the highest economic benefits. With the 20% N reduction, M5 increased NRE by 16.95% on average while decreasing yield and net benefit by only 6.39% and 7.40% respectively, compared with M3. Although NRE could continue to increase, but the yield and benefits rapidly decreased after N reduction exceeds 20%. These results demonstrate that twice-split application of PCU combined with urea is conducive to achieving a joint increase in yield, NRE, and benefits. More importantly, it can also significantly improve the NRE without losing yield and benefits while saving 20% N input.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Split application of polymer-coated urea combined with common urea improved nitrogen efficiency without sacrificing wheat yield and benefits while saving 20% nitrogen input

Ma,

Tao,

Jia

et al. 2024

Front. Plant Sci.

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Innovative environment-friendly liquid fertilizer bead from sodium alginate coating with IPN membrane derived from natural rubber and cassava starch

Phansroy,

Boonyod,

Mulasake

et al. 2024

J Polym Res

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This research aims to prepare liquid fertilizer beads formed with sodium alginate (SA) (SAB) that were coated with interpenetrating polymer network (IPN) hydrogels based on pre-vulcanized natural rubber latex (NR) and cassava starch (St) (IPN NR/St) for controlling the release of the urea solutions. The preparation of SAB at various concentrations of SA and calcium chloride (CaCl 2 ) solutions was investigated. It was found that the appropriate concentrations of SA and CaCl 2 solutions were 1.5 and 5.0 wt%, respectively. The obtained SAB was coated with IPN NR/St, the ratio between SAB and IPN NR/St at 1.0/1.0, and the number of coated layers of IPN NR/St at 2 layers. As a result, coated alginate beads (CSAB) can decelerate the release of urea solution, and enhance the Thai eggplant growth. Thus, the CSAB could enhance not only the release control of urea solution but also lesser environmental problems, and is a novel technique for coating and the liquid release control for organic or biofertilizers.

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Optimal N fertilizer management method for improving maize lodging resistance and yields by combining controlled-release urea and normal urea

Liu,

Pubu,

et al. 2024

European Journal of Agronomy

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Combining controlled-release urea and normal urea with appropriate nitrogen application rate to reduce wheat stem lodging risk and increase grain yield and yield stability

Cited by 9 publications

References 50 publications

Split application of polymer-coated urea combined with common urea improved nitrogen efficiency without sacrificing wheat yield and benefits while saving 20% nitrogen input

Split application of polymer-coated urea combined with common urea improved nitrogen efficiency without sacrificing wheat yield and benefits while saving 20% nitrogen input

Innovative environment-friendly liquid fertilizer bead from sodium alginate coating with IPN membrane derived from natural rubber and cassava starch

Optimal N fertilizer management method for improving maize lodging resistance and yields by combining controlled-release urea and normal urea

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