Nitrogen Fertilizing
Mostrando 1-12 de 15 artigos, teses e dissertações.
-
1. Decision-making on the optimum timing for nitrogen fertilization on sugarcane ratoon
ABSTRACT: Low efficiency of nitrogen from fertilizers is a major concern worldwide, threatening the sustainability of sugarcane production. The N use efficiency (NUE) by sugarcane can be improved by adopting better fertilizing management practices, reducing environmental impacts. This work evaluated the effects of varying N rates and time of application on s
Sci. agric. (Piracicaba, Braz.). Publicado em: 2019-05
-
2. Composted sewage sludge in replacement of mineral fertilization on wheat production and development
ABSTRACT Several research lines are required to ensure a proper disposal of sewage sludge in Brazil; among them, we may highlight agricultural use. In this sense, this study aimed at assessing the effect of exchanging nitrogen sourcing via conventional fertilization (chemical) with growing doses of composted sewage sludge (CSS) on wheat crop performance. The
Eng. Agríc.. Publicado em: 2016-08
-
3. Planting spacing and NK fertilizing on physiological indexes and fruit production of papaya under semiarid climate
ABSTRACT The nutritional requirements of papaya (Carica papaya L.) increase continuously throughout the crop cycle, especially for potassium and nitrogen, which are the most required nutrients and act on plant vital functions such as photosynthetic activity, respiration, transpiration and stomatal regulation. An experiment was conducted from November 2010 to
Bragantia. Publicado em: 04/12/2015
-
4. Eficiência de fertilizantes com nitrogênio e enxofre sobre a composição quimico-bromatológica e algumas características agronômicas da cultura da cana-de-açúcar / Nitrogen and Sulphur fertilizing efficiency over the chemical-bromatological and some agronomical characteristics of sugar-cane culture
O objetivo foi avaliar a influência de fertilizantes nitrogenados e do fornecimento de enxofre sobre a composição químico-bromatológica e algumas características agronômicas da cultura da cana-de-açúcar, bem como as perdas de N no sistema solo x Planta. O estudo foi conduzido no município de Araras/SP, numa área do Grupo Usina São João, durante
Publicado em: 2010
-
5. Fertilizing residual effect in sugarcane plant and nitrogen fertilizing of first ratoon cane with vinasse application. / Efeito residual da adubação em cana planta e adubação nitrogenada em cana de primeira soca com aplicação de vinhaça.
A manutenção da palhada da cana-de-açúcar, associada à aplicação de vinhaça complementada com adubação nitrogenada, poderá melhorar as propriedades físicas, químicas e biológicas do solo, podendo resultar em ganho de produtividade da cultura. Este estudo teve como objetivo avaliar o efeito residual da adubação do ciclo anterior, na cana plant
Publicado em: 2009
-
6. Transferência do carbono de resíduos da colheita de eucalipto para frações da matéria orgânica do solo / Carbon transference from eucalypt harvest residues to soil organic matter fractions
Eucalypt plantation areas in Brazil have increased continuously over the years. The practice of removing more lignified material, such as bark and branches, from the ground after wood harvesting in eucalypt forests may prevent the stabilization of carbon (C) in recalcitrant fractions of soil organic matter (SOM). The recalcitrance of such organic fractions i
Publicado em: 2008
-
7. Nitrogen, phosphorus and potassium recommendation for sunflower under no-tillage system in Paraguay / RECOMENDAÇÃO DE NITROGÊNIO, FÓSFORO E POTÁSSIO PARA GIRASSOL SOB SISTEMA PLANTIO DIRETO NO PARAGUAI.
Sunflower crop has some important agronomic characteristics, as great fitomassa production, larger resistance to the drought, cold and heat than most of the cultivated species and wide adaptability to different conditions of soil and climates. Its deep root system provides absorption of nutrients of the deepest layers, ciclying great amounts of nitrogen (N),
Publicado em: 2008
-
8. Effects of pentoxifylline treatment before freezing on motility, viability and acrosome status of poor quality human spermatozoa cryopreserved by the liquid nitrogen vapor method
The objective of the present study was to investigate the effects of the direct addition of pentoxifylline (PF) to the ejaculates of men with poor sperm quality before freezing on post-thaw sperm motility, viability, acrosome integrity, and agonist-induced acrosome reaction. Semen specimens from 16 infertile men with impaired sperm count and motility (oligoa
Brazilian Journal of Medical and Biological Research. Publicado em: 04/06/2007
-
9. Efeitos do fornecimento de dietas contendo nitrogênio não-protéico(NNP) sem prévia adaptação, durante curto espaço de tempo e em diferentes fases do ciclo estral na produção, qualidade e grau de desenvolvimento de embriões de fêmeas bovinas superovuladas / Effect of short term non-protein nitrogen (NPN) feeding to superovulated beef cows without previous adaptation, at different periods of the oestrus cycle on yield, quality and development degree of recovered embryos
High levels of crude protein (CP) in ruminant diets were associated with detrimental effect on fertility, mainly, due to the rise of plasmatic urea nitrogen (PUN) concentration. The aim of this study was to verify the effects of short term non-protein nitrogen feeding at different periods of the oestrus cycle in superovulated cows without previous adaptation
Publicado em: 2007
-
10. Dinâmica do nitrogênio na cultura do milho (Zea mays L.), em cultivo sucessivo com aveia preta (Avena strigosa), sob implantação do sistema plantio direto / Nitrogen dynamics in maize (Zea Mays L) and black oats (Avena srigosa) successive cropping under the introduction of the no-tillage system
The general objective of this work was to study the dynamics of nitrogen in the soil-plant system of two maize crops with a black oats one in between, introducing the no-tillage system. Besides, fertilizing the first maize crop with 15N enriched nitrogen fertilizer, it was also objective of this work to assess the total and the derived from fertilizer nitrat
Publicado em: 2006
-
11. AVALIAÇÃO E MODELIZAÇÃO DA DINÂMICA DE CARBONO E NITROGÊNIO EM SOLO COM O USO DE DEJETOS DE SUÍNOS / Evaluation and simulation of soil carbon and nitrogen dynamics with the use of pig manure
The managedment of the pig manure, in the slurry or solid form (deep bedding), and how it is applied to the soil, in the surface or incorporated, must affect the dynamics of the C and the N in the soil. The objectives of this work were: 1) to evaluate the dynamics of the C and the N in soil and to evaluate the N supply to maize which were applied pig manure
Publicado em: 2005
-
12. Consumption of fertilizing solutions for adult plants of tahiti lime on rangpur lime in localized irrigation. / Consumo de soluções fertilizantes por plantas adultas de lima ácida Tahiti sobre limão Cravo em irrigação localizada.
The citriculture plays fundamental role in the agribusiness of the State of São Paulo, however in the last 5 years many citrus growers feel the need to irrigate their orchards, looking for the stability and yield increase. For the development of the project three experiments were installed, being the first to evaluate the porous lysimeter developed by Macha
Publicado em: 2004