Nitrogen Fertilization Management with Blends of Controlled-Release and Conventional Urea Affects Common Bean Growth and Yield during Mild Winters in Brazil
| Autor: | Renata Alcarde Sermarini, Paulo Cesar Ocheuze Trivelin, Pedro Lopes Garcia |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
biology
15N-urea recovery lcsh:S chemistry.chemical_element Environmental pollution NBPT-treated urea Ammonia volatilization from urea biology.organism_classification Nitrogen lcsh:Agriculture chemistry.chemical_compound Human fertilization Animal science chemistry polymer-sulfur coated urea ammonia volatilization Coated urea Yield (chemistry) Phaseolus vulgaris L Urea Phaseolus soil N mineral Agronomy and Crop Science Mathematics |
| Zdroj: | Agronomy, Vol 10, Iss 1935, p 1935 (2020) Agronomy Volume 10 Issue 12 |
| ISSN: | 2073-4395 |
| Popis: | The common bean (Phaseolus vulgaris L.) requires nitrogen (N) during its vegetative and reproductive stages. A single application of a blend of polymer-sulfur coated urea (PSCU) and conventional urea (U) treated with NBPT (N-(n-butyl) thiophosphoric triamide) can meet that demand. Broadcast application could improve yield than other N management practices. This research evaluated two blends (70%PSCU + 30%U and 30%PSCU + 70%U) and three N fertilization managements (incorporated, broadcast, and split application) on soil ammonia volatilization (AV) and N mineral content (NM) plant N uptake (NU) and 15N recovery from U (NUR) and yield (GY). Irrigated field experiments were conducted in 2018 and 2019 in Rhodic Eutrustox soil. The N application rate was 90 kg ha&minus 1. AV reached 12% (30%PSCU + 70%U, broadcast application) and 14% of the applied N (split application at the third trifoliate leaf unfolded stage (V4)). The incorporated application resulted in higher NM in the vegetative and reproductive stages than the other management practices. Broadcast application resulted in higher NU than split application at physiological maturity. Split application resulted in higher NUR (grain) and GY than broadcast application. There was a positive correlation between NUR (grain) and GY in all N fertilization management treatments. The NUR values reached 48% (30%PSCU + 70%U) and 18% (70%PSCU + 30%U). Split N application using these blends can improve NUR in grain and GY compared to broadcast application in Rhodic Eutrustox soil. This information can help farmers improve the fertilization management practices used with these blends, and thereby avoid economic losses and environmental pollution. |
| Databáze: | OpenAIRE |
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