Sunflower Grain Yield
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Evidence of accelerated and altered pollen development after Imazapyr treatment in resistant sunflower
ABSTRACT Imazapyr (IM) treatment applied at early reproductive developmental stages have been associated with induced male sterility in sunflower (Helianthus annuus L.). The aim of this work was to determine the effects induced by two different doses of IM-treatment (1X and 2X; 80 and 160 g a.i.·ha-1) on pollen grain yield, pollen viability and on the exine
Bragantia. Publicado em: 2020-03
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2. Optimum environment number for the national sunflower trials network
ABSTRACT. This work aimed to present the optimum environment number methodology and propose the optimization of the National Sunflower Trials Network, by means of the environments exclusion that do not provide loss of the environmental variability already established. Grain and oil yield data of 16 genotypes evaluated at 16 environments of the National Sunfl
Acta Sci., Agron.. Publicado em: 21/10/2019
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3. Yield loss in sunflower cultivars due to bird attack
RESUMO O ataque de pássaros ao girassol pode dificultar a exploração do girassol no semiárido brasileiro. O objetivo deste trabalho foi avaliar os efeitos de níveis (0, 33, 66 e 100%) de proteção dos capítulos de oito cultivares de girassol, avaliadas em blocos casualizados com parcelas subdivididas e quatro repetições. As cultivares foram aplicada
Rev. Ciênc. Agron.. Publicado em: 2019-03
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4. ECONOMIC AND ENERGY VIABILITY OF SUNFLOWER IRRIGATED CROP
Abstract This study was carried out with the objective of assessing grain yield, economic analysis and energy balance of three sunflower genotypes with and without irrigation. The experiment was installed in the Experimental Farm of the Faculty of Agrarian Sciences of the Federal University of Grande Dourados in the 2011/2012 and 2012/2013 harvests in Dourad
Eng. Agríc.. Publicado em: 2018-04
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5. Cover crop rotations in no-till system: short-term CO2 emissions and soybean yield
ABSTRACT: In addition to improving sustainability in cropping systems, the use of a spring and winter crop rotation system may be a viable option for mitigating soil CO2 emissions (ECO2). This study aimed to determine short-term ECO2 as affected by crop rotations and soil management over one soybean cycle in two no-till experiments, and to assess the soybean
Sci. agric. (Piracicaba, Braz.). Publicado em: 2018-01
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6. A crop model-based approach for sunflower yields
Pushed by the Brazilian biodiesel policy, sunflower (Helianthus annuus L.) production is becoming increasingly regarded as an option to boost farmers' income, particularly under semi-arid conditions. Biodiesel related opportunities increase the demand for decision-making information at different levels, which could be met by simulation models. This study aim
Sci. agric. (Piracicaba, Braz.). Publicado em: 2014-10
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7. Manejo do solo e adubacao na cultura do girassol em sucessao a aveia-preta.
A semeadura direta e o estabelecimento de culturas de inverno para cobertura do solo sao tecnicas que tem adquirido importancia na manutencao ou melhoria da produtividade das culturas de verao. O presente trabalho, conduzido, durante duas estacoes de crescimento, teve como objetivo determinar o efeito de sistemas de manejo do solo (convencional e plantio dir
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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8. Biologia floral e produtividade de grÃos de trÃs hÃbridos de girassol (helianthus annuus l.) Em funÃÃo do comportamento de pastejo e eficiÃncia polinizadora da abelha apis mellifera. / Biology floral and grain yield of three hybrid sunflower (helianthus annuus l.) Depending on the behavior of grazing and efficiency of bee pollination apis mellifera.
A pesquisa foi conduzida nos municÃpios de Russas (Campo Federal) e Fortaleza (Universidade Federal do CearÃ), ambos no estado do CearÃ, no perÃodo de agosto de 2005 a janeiro de 2006. Foram investigados aspectos da biologia floral e produtividade dos hÃbridos de girassol (Helianthus annuus L.) H250, H251 e H360, e o comportamento de pastejo e a eficiÃ
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/02/2006
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9. Efficiency of different crops and corn hybrids on the use of phosphorus in cerrado soil. / Eficiências de diferentes culturas e híbridos de milho quanto a utilização de fósforo em solos de cerrado.
The Cerrado (Savannah) region has been one of main agriculture expansion area in Brasil, presenting favorable characteristics, but also limitations to crop production, mainly the low soil phophorus content and availability. The objective of the work was to evaluate the mainly recommended maize hybrids for cerrado region on the ability to absorb poorly-availa
Publicado em: 2001