Agronomic Effectiveness
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. Foliar application of zinc in the agronomic biofortification of arugula
Abstract Zinc deficiency affects one third of the population and a possible solution is the agronomic biofortification of vegetables. Due to the increased consumption of arugula, this vegetable has good potential of use; however, there are few researches on the subject. The objective of this study was to evaluate the effect of foliar zinc applications, at di
Food Sci. Technol. Publicado em: 04/11/2019
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2. Remediation of Soils Contaminated by Pesticides Using Physicochemical Processes: a Brief Review
RESUMO: Após anos de aplicação, muitas vezes de forma indiscriminada, de agrotóxicos, danos foram causados ao ambiente, bem como às culturas agronômicas cultivadas em locais contaminados. No tratamento de água são utilizadas técnicas que se baseiam em processos físicos e ou físico-químicos, onde ocorre a formação de agentes oxidantes secundári
Planta daninha. Publicado em: 13/06/2019
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3. Acid Ammonium Citrate as P Extractor for Fertilizers of Varying Solubility
ABSTRACT: There are several globally accepted methods to chemically characterize P-fertilizers, but not all are suitable to predict the agronomic efficiency of the P sources in terms of plant nutrition. Our aim was to investigate the performance of P extractors for fertilizers, investigating the consistency of different methods for P sources of varying prope
Rev. Bras. Ciênc. Solo. Publicado em: 20/12/2018
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4. Effectiveness of Five Biosolids as Nitrogen Sources to Produce Single and Cumulative Ryegrass Harvests in Two Australian Soils
ABSTRACT Biosolids have been produced by various stabilization processes of sewage sludge, but little attention has been given to the effects of such treatments on their effectiveness to supply nitrogen for plant growth. Here, we investigated these effects by cultivating Lolium perenne (ryegrass) in two Australian soils, a sandy Spodosol and a clayey Oxisol.
Rev. Bras. Ciênc. Solo. Publicado em: 23/06/2016
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5. Desempenho agronômico de cultivares de soja em diferentes épocas de semeadura no cerrado do Distrito Federal
In the Brazilian Savannahs, as a general breeding procedure, cultivars, progenies and other soybean genotypes are grown under ample environmental conditions, before they are released to cultivation. The variations comprise different soil types, fertility levels, moisture regime, sowing dates, temperature and cultivation patterns. An outstanding cultivar in o
Publicado em: 2009
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6. Evaluation of the hydroponic lettuce using water from fish production system mixed with different percentage of nutritive solutions / Avaliação da alface hidropônica usando água de piscicultura misturada com diferentes porcentagens de soluções nutritivas
The present work was carried out in plastic greenhouse, at Escola Agrotécnica Federal de Concórdia, State of Santa Catarina, Brazil, with the purpose of evaluating the agronomic performance of the lettuce crop, cultivar Vera, under hydroponic system using water from fish production mixed with different percents of macro and micronutrients in the nutritive
Publicado em: 2009
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7. Eficiência agronômica de fosfatos de rocha, utilizados isoladamente ou associados ao superfosfato triplo, para a cultura da soja / Agronomic effectiveness of phosphate rocks, by itself or associated with the triple superphosphate, for soybean
due to a low natural availability of P in cultivated soils. To obtain good economically yield is necessary P fertilizer application. Nearly all phosphorus fertilization is carried out using acidulated phosphate, which have high water solubility and when applied in the soil may increase the P availability at times of low demand by the crop. To associate the u
Publicado em: 2008
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8. Efeito do superfosfato triplo (32P) na absorção do fósforo do fosfato natural pelas plantas de milho e soja / Effect of triple superphosphate (32P) on phosphate rock phosphorus uptake by maize and soybean plants
The efficiency of phosphate rock (PR) can be improved applying it together with watersoluble P fertilizer. Four experiments were carried out in the greenhouse of the Soil Fertility Laboratory, CENA/USP (Centro de Energia Nuclear na Agricultura - Universidade de São Paulo), with maize (Zea mays L.) and soybean [Glycine max (L.) Merr.] grown in a dystrophic T
Publicado em: 2007
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9. Eficiência agronômica de fontes alternativas de fósforo e modelo de predição do uso de fosfatos naturais / Agronomic effectiveness of alternative sources of phosphorus and phosphate rock decision support system
Os fertilizantes fosfatados (FF) mais utilizados na agricultura são solúveis em água, e requerem enxofre elementar e concentrados apatíticos de elevada qualidade para produção, conduzindo à subutilização dos depósitos de fosfato (perdas elevadas de P no beneficiamento). Conseqüentemente, é necessário estudar as fontes alternativas de P. Neste tr
Publicado em: 2007
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10. Ammonia volatilization of nitrogen fertilizers applied in top-dressing to maize in differents environment / VolatilizaÃÃo de amÃnia de adubos nitrogenados sob diversas condiÃÃes ambientais na cultura do milho
Experiments in laboratory and house of vegetation with two ground, one of arenaceous texture (PVAd) and another argillaceous one had been developed (NVdf), beyond a study the field, having for objective to evaluate the agronomic effectiveness of the nitrogen fertilization, evaluating losses of N for volatilization of different nitrogen seasonings: urea; urea
Publicado em: 2007
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11. Plant- and microbial-based mechanisms to improve the agronomic effectiveness of phosphate rock: a review
A deficiência de fósforo disponível nas plantas é considerada o maior fator de limitação na produção de alimentos em diversos solos agrícolas. São necessários recursos minerais para restaurar o conteúdo de fósforo no solo. Em regiões onde fertilizantes convencionais nãosão utilizados devido às limitações de custo ou de seus efeitos ambient
Anais da Academia Brasileira de Ciências. Publicado em: 2006-12
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12. Eficiência nutricional de fontes de fósforo com solubilidade variável em água em cultivares de arroz (Oryza sativa L.) / Nutritional effectiveness of phosphorus sources varying in water solubility for cultivars of upland rice (Oryza sativa L.)
Cultivars of upland rice may vary in terms of absorption and utilization of phosphorus in soils deficient in this nutrient. Breeding is generally performed in optimal conditions of soil fertility leading to the possibility that new cultivars decrease their condition to absorb and utilize P. The agronomic effectiveness of P sources is related to many aspects,
Publicado em: 2006