Application of different nitrogen doses to increase nitrogen efficiency in Mombasa guinegrass (Panicum maximum cv. mombasa) at dry and rainy seasons
| Autor: | Marcelo Carvalho Minhoto Teixeira Filho, Fernando Shintate Galindo, Salatiér Buzetti, Elisângela Dupas, Mariana Gaioto Ziolkowski Ludkiewicz |
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| Přispěvatelé: | Universidade Estadual Paulista (UNESP) |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Wet season
biology Soil texture Crop yield Efficiency of nitrogen fertilization 0402 animal and dairy science Tropical grass Soil classification 04 agricultural and veterinary sciences Plant Science Ultisol biology.organism_classification 040201 dairy & animal science Agronomy Dry season 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Environmental science Pasture Urea Dry matter Ammonium nitrate Agronomy and Crop Science Panicum |
| Zdroj: | Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
| Popis: | Made available in DSpace on 2022-04-29T08:26:55Z (GMT). No. of bitstreams: 0 Previous issue date: 2017-12-01 Nitrogen is the nutrient that most influences productivity and pasture quality but nitrogen fertilization efficiency still needs to be increased. The objective of this work was to study the efficiency of nitrogen sources and doses (N) on the yield of Panicum maximum cv. Mombasa applied during rainy and dry periods. The soil of the experimental area is an ultisol with a sandy texture. The experimental design was a randomized block in a factorial scheme with four replications, two sources of nitrogen: urea and ammonium nitrate and five N doses (0, 50, 100, 150 and 200 kg ha-1 per cutting), in total 0, 300, 600, 900 and 1200 kg ha-1 per season-dry or rainy, respectively). The dry matter yield (DMY) and nitrogen use efficiency (NUE), agronomic efficiency (AE), recovery of applied nitrogen (RAN) and physiological efficiency (PE) were evaluated. The results showed that N source did not influence DMY, NUE, AE, RAN and PE. However, the N doses influenced DMY positively, and negatively NUE, AE, RAN and PE. Generally, the increase was occurred in DMY with the increase of N doses and decrease in NUE, AE, RAN and PE. As the N source did not influence the analyzed attributes, it is recommended to use urea, because it is a fertilizer with the highest N concentration and lowest cost per unit of nutrient, at a dose of 100 kg ha-1 per cut, favoring DMY gain. In addition this urea assists with the management and maintenance of the Mombasa guineagrass. Department of Plant Health Rural Engineering and Soils Faculdade de Engenharia de Ilha Solteira Universidade Estadual Paulista 'Júlio de Mesquita Filho' Ilha Solteira Department of Plant Health Rural Engineering and Soils Faculdade de Engenharia de Ilha Solteira Universidade Estadual Paulista 'Júlio de Mesquita Filho' Ilha Solteira |
| Databáze: | OpenAIRE |
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