Urea As Fertilizer
Mostrando 1-12 de 58 artigos, teses e dissertações.
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1. Efficient inoculation of diazotrophic bacteria into sugarcane by the drip irrigation system
Resumo: O objetivo deste trabalho foi avaliar a eficiência da inoculação de um consórcio de bactérias diazotróficas por meio do sistema de irrigação por gotejamento em cana-de-açúcar (Saccharum spp.), em região semiárida brasileira. Os tratamentos avaliados foram: inoculação padrão por submersão; uma ou duas inoculações por irrigação por
Pesq. agropec. bras.. Publicado em: 11/11/2019
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2. Use of urease inhibitors to reduce ammonia volatilization in Amazonian soils
Resumo: O objetivo deste trabalho foi avaliar inibidores de urease quanto à redução de perdas por volatilização de amônia proveniente da ureia, em solos da Amazônia. O experimento foi realizado em um Latossolo Amarelo de textura muito argilosa, em um Latossolo Vermelho de textura argilosa, e em um Plintossolo Argilúvico de textura franco-siltosa. Cad
Pesq. agropec. bras.. Publicado em: 04/07/2019
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3. Biodegradable oil-based polymeric coatings on urea fertilizer: N release kinetic transformations of urea in soil
ABSTRACT: Polymer coatings are used to control the rate of release of plant available nutrients from fertilizers as well as to reduce nutrient losses such as ammonia (NH3) volatilization. Although the literature presents several examples of materials used to coat urea, little is known about nitrogen (N) release properties such as the mechanism involved and p
Sci. agric. (Piracicaba, Braz.). Publicado em: 01/07/2019
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4. Timing and Splitting of Nitrogen Side-Dress Fertilization of Early Corn Hybrids for High Grain Yield
ABSTRACT Currently, most nitrogen fertilizer is side-dressed when corn is in the four (V4) to eight (V8) expanded leaf stage. However, recent studies have shown that modern hybrids take up high amounts of nitrogen during grain filling. This indicates that a late nitrogen fertilization, at the time of crop flowering, may be important to optimize corn agronomi
Rev. Bras. Ciênc. Solo. Publicado em: 28/03/2019
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5. Sewage sludge compost in zoysia grass sod production
Resumo Objetivou-se com este trabalho avaliar se o uso de lodo de esgoto compostado na produção de grama esmeralda pode substituir parcial ou totalmente a adubação com uréia. O experimento foi conduzido em área de produção de grama, localizada em Itapetininga-SP. O delineamento experimental utilizado foi de blocos ao acaso, com cinco repetições e p
Rev. Ambient. Água. Publicado em: 11/02/2019
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6. Nitrogen recovery efficiency for corn intercropped with palisade grass
ABSTRACT Intercropping corn and palisade grass is a technique to increase straw production, soil C contents, nutrient cycling and crop yield. However, concerns arise from nitrogen (N) uptake by the intercropping crop causing reduction in the yield of the corn. Our objective was to evaluate N recovery efficiency (NRE), and the N dynamics in the soil-plant sys
Bragantia. Publicado em: 18/10/2018
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7. Corn grain yield and 15N-fertilizer recovery as a function of urea sidedress timing
Abstract Best fertilizer management practices such as adopting the right N sidedress timing can reduce N losses by volatilization, thus, raising N-fertilizer recovery and grain yield. To evaluate ammonia (N-NH3 ) losses, N-fertilizer recovery and grain yield as a function of urea sidedress timing in corn, a field study was conducted during the 2011-2012 and
An. Acad. Bras. Ciênc.. Publicado em: 03/09/2018
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8. Sod production and the effects of liquid organo-mineral fertilizers and thickness of sod
ABSTRACT: Nitrogen fertilization and an appropriate cutting thickness can result in firmer sod that can be handled in less time with greater turfgrass regrowth during the subsequent cycle. This experiment was conducted on a sod production farm located in Capela do Alto, in the state of Sao Paulo, Brazil. The soil was a dystrophic Rhodic Hapludox (Oxisol) wit
Sci. agric. (Piracicaba, Braz.). Publicado em: 2018-08
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9. The combination of compost or biochar with urea and NBPT can improve nitrogen-use efficiency in maize
ABSTRACT The addition of organic residues to agricultural soils has been used as a practical alternative to improve crop quality and health. The objective of this work was to evaluate maize physiological and nutritional responses to the application of compost and biochar combined with urea (N) and N-(n-butyl) thiophosphoric triamide (NBPT). The experiment wa
An. Acad. Bras. Ciênc.. Publicado em: 2018-04
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10. A practical approach for assessing the efficiency of coated urea on controlling nitrogen availability
ABSTRACT We propose an approach for assessing the efficiency of coating materials on controlling nitrogen (N) availability to plants. It is based on the use of coated and soluble urea (UR) applied to corn over 3 growing cycles, as follows: coated UR with longevity of 2 (UR-2m) or 4 months (UR-4m) with application of 900 mg N∙pot−1 at the beginning of the
Bragantia. Publicado em: 15/05/2017
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11. Nitrogen fertilization in top dressing for wheat crop in succession to soybean under a no-till system
ABSTRACT Agricultural intensification to improve wheat yield has increased the demand for nitrogen fertilizers. This study aimed to investigate the wheat response in succession to soybean due to application of nitrogen rates and sources in top dressing, as well as to determine the N rates of maximum technical yield (MTY) and maximum economic yield (MEY). A f
Bragantia. Publicado em: 15/05/2017
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12. Phosphorus fractions in soil with a long history of organic waste and mineral fertilizer addition
ABSTRACT Applications for long periods of organic animal waste as a source of nutrients to crops can contaminate the soil and the surface and subsurface waters. This study aimed to evaluate how the utilization of organic waste, after successive applications, affects P fractions in the soil and consequently environmental contamination. In an experiment conduc
Bragantia. Publicado em: 30/01/2017