Nutrient Export
Mostrando 1-12 de 34 artigos, teses e dissertações.
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1. Growth, yield, nutrient accumulation and export and thermal sum of Italian zucchini
RESUMO Pesquisas com nutrição de plantas são essenciais para a correta fertilização, melhorando produtividade e qualidade do produto, além de poder contribuir para a atualização da recomendação. O objetivo do experimento foi avaliar o crescimento, acúmulo e exportação de nutrientes, soma térmica e produtividade da cultivar Corona F1. O trabalho
Hortic. Bras.. Publicado em: 18/07/2019
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2. Manejo da biomassa e sustentabilidade nutricional em povoamentos de Eucalyptus spp. em pequenas propriedades rurais
Resumo O estudo foi realizado com o objetivo de subsidiar práticas de manejo nutricional de povoamentos de Eucalyptus spp. em pequenas propriedades rurais no estado do Rio Grande do Sul. Foram avaliados povoamentos de 2, 4, 6 e 8 anos de idade, com amostragem de 24 árvores e determinação da biomassa e nutrientes nos componentes: folha, galho vivo, galho
Ciênc. Florest.. Publicado em: 30/05/2019
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3. Productivity and nutritive value of elephant grass pastures under organic and conventional production systems
Abstract: Elephant grass (EG) (Pennisetum purpureum Schum.) have great importance in tropical and subtropical climates, especially on dairy farms. Normally, EG is established alone under high fertilization levels. EG in organic production system can improve low production costs and environmental issues, are still little known. The aim of this research was to
An. Acad. Bras. Ciênc.. Publicado em: 13/05/2019
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4. Accumulation and export of nutrients in cactus pear cladodes (Opuntia ficus-indica) under different managements in the Brazilian Semiarid
ABSTRACT The present study evaluated the accumulation and export of nutrients in cactus pear (Opuntia ficus-indica) cv. Gigante, fertilized with combinations of nitrogen (10, 70, 100, 130, and 190 kg ha−1 year−1 N) and phosphorus (10, 70, 100, 130, and 190 kg ha−1 year−1 P2O5) under annual and biennial harvests, in Quixadá and Tejuçuoca, using a sp
R. Bras. Zootec.. Publicado em: 03/05/2018
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5. Nutrient Uptake by High-Yielding Cotton Crop in Brazil
ABSTRACT: Determining nutrient uptake and accumulation rates by cotton crops is important to define management strategies, especially for transgenic varieties, which are cultivated using high-technology approaches that require substantial investment to maximize yield. Currently in Brazil, the states of Bahia and Mato Grosso are responsible for 84.4 % of the
Rev. Bras. Ciênc. Solo. Publicado em: 15/02/2018
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6. Tillage, fertilization systems and chemical attributes of a Paleudult
Tillage and fertilization methods may affect soil fertility. With the aim of assessing changes in soil chemical properties over a period of ten years, soil samples of a Paleudult were collected over nine seasons at three layer depths (0-5, 5-10, 10-20 cm) and were chemically analyzed. Grain yield and nutrient export in two summer crops, soybean (Glycine max)
Sci. agric. (Piracicaba, Braz.). Publicado em: 2015-02
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7. Carbohydrate production and transport in cotton cultivars grown under boron deficiency
An adequate supply of boron (B) is required for the optimal growth and development of cotton (Gossypium hirsutum L.) plants, but the low phloem mobility of B limits the possibilities of correcting B deficiency. There are indications that different cotton cultivars could have different responses to B deficiency. The differences in responses of cotton cultivar
Sci. agric. (Piracicaba, Braz.). Publicado em: 2013-12
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8. AGRICULTURE OF PRECISION: MANAGEMENT OF THE FERTILITY WITH APPLICATION OF THE VARIED RATE OF FERTILIZERS AND ITS RELATION WITH CROP YIELDS / AGRICULTURA DE PRECISÃO: MANEJO DA FERTILIDADE COM APLICAÇÃO A TAXA VARIADA DE FERTILIZANTES E SUA RELAÇÃO COM A PRODUTIVIDADE DE CULTURAS
The agriculture of precision has been an important tool for the characterization of the spatial variability of soil attributes and crops. Thus, there is many options to elaborate thematic digital maps that can improve the soil and crop management. In this work, two croplands that has been managed with precision agriculture during several years were selected.
Publicado em: 2009
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9. Availability and accumulation of potassium, calcium and magnesium in crops of eucalyptus in several forest sites / Disponibilidade e acúmulo de potássio, cálcio e magnésio em plantações de eucalipto em diversos sítios florestais
The knowledge of the alterations of the nutrient contents in the soil compartments, caused by the variations in the changeable and non-changeable forms over time and the relation of these nutrients with the nutrient export by the eucalyptus, may provide safe indications as to the use of soils and, therefore, of the forest sites studied and, consequently, all
Publicado em: 2008
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10. Fertilization of pre-planting on growth, production and quality of blackberry (Rubus sp.). / Adubação de pré-plantio no crescimento, produção e qualidade da amoreira-preta (Rubus sp.)
Blackberry is a temperate climate fruit that due to its rusticity, good yield, fast economic feedback and several options of market, it is a good alternative for small farms diversification. The objective of this work was to assess the effect of seven different pre-planting fertilizers on blackberries cultivars Tupy and Xavante. The experiment was carried ou
Publicado em: 2008
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11. EXPORT OF NUTRIENTS IN CUPUAÇU FRUIT (Theobroma grandiflorum) IN THREE SOILS OF THE AMAZONIA / EXPORTAÇÃO DE NUTRIENTES EM FRUTO DE CUPUAÇU (Theobroma grandiflorum (Willd. ex Spreng.) Schum.) EM TRÊS SOLOS DA AMAZÔNIA CENTRAL
The farmers that grow cupuaçu (Theobroma grandiflorum (Willdenow ex Sprengel) Schumann, Sterculiaceae) recognize the importance of fertilization to increase productivity, but little research has been done to identity an agronomically correct and economically viable, scheme. The present study evaluated the from exportation of nutrients by the cupuaçu fruit
Publicado em: 2005
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12. A stream's role in watershed nutrient export
National Academy of Sciences.