Leaf Removal
Mostrando 13-24 de 103 artigos, teses e dissertações.
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13. PESTICIDES DEPOSITION IN VINEYARDS ON DIFFERENT CONDITIONS OF LEAF WETNESS
ABSTRACT The high susceptibility to diseases of fine table grapes cultivars demand intensive use of pesticides, and the presence of water on the leaf surface can worsen the deposition of these products. The objective of this study was to evaluate the spray deposition in vine leaves in different conditions of leaf wetness, and test the effectiveness of an art
Eng. Agríc.. Publicado em: 2017-04
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14. The physiological and biochemical mechanism of nitrate-nitrogen removal by water hyacinth from agriculture eutrophic wastewater
ABSTRACT Large amount of agriculturl wastewater containing high level nitrate-nitrogen (NO3 --N) is produced from modern intensive agricultural production management due to the excessive use of chemical fertilizers and livestock scale farming. The hydroponic experiment of water hyacinth was conducted for analyzing the content of NO3 --N, soluble sugar conten
Braz. arch. biol. technol.. Publicado em: 20/10/2016
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15. Enzyme activity and reserve mobilization during Macaw palm ( Acrocomia aculeata ) seed germination
ABSTRACT Reserve mobilization in seeds occurs after visible germination, which is marked by the protrusion of the radicle or cotyledonary petiole, as in species of Arecaceae. Acrocomia aculeata (macaw palm), usually produces hard seeds whose endosperm has mannan-rich cell walls. We investigated the composition of storage compounds in macaw palm seed and the
Acta Bot. Bras.. Publicado em: 22/08/2016
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16. Infection process of Phakopsora gossypii in cotton leaves
ABSTRACT Tropical rust caused by the biotrophic fungus Phakopsora gossypii is an emerging disease in cotton that has caused significant yield losses of crop/cotton cultivated in Brazil. Considering the current importance of tropical rust and the need to obtain additional basic information about its causal agent to better control this disease, the present stu
Sci. agric. (Piracicaba, Braz.). Publicado em: 2016-08
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17. Canopy management effects on ‘Syrah’ grapevines under tropical semi-arid conditions
ABSTRACT The aim of this study was to evaluate the effects of shoot topping and leaf removal practices on vegetative vigor, yield and physicochemical characteristics of the 'Syrah' grape in the semi-arid tropical climate conditions of the São Francisco River Valley in the northeast of Brazil. The experiment was conducted over five growing cycles from 2010 t
Sci. agric. (Piracicaba, Braz.). Publicado em: 2016-06
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18. A procedure to evaluate the efficiency of surface sterilization methods in culture-independent fungal endophyte studies
Extraneous DNA interferes with PCR studies of endophytic fungi. A procedure was developed with which to evaluate the removal of extraneous DNA. Wheat (Triticum aestivum) leaves were sprayed with Saccharomyces cerevisiae and then subjected to physical and chemical surface treatments. The fungal ITS1 products were amplified from whole tissue DNA extractions. A
Braz. J. Microbiol.. Publicado em: 2014-09
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19. Herbage accumulation and grazing losses on Mulato grass subjected to strategies of rotational stocking management
Grazing management strategies affect not only herbage accumulation but also the efficiency of grazing. This study aimed to evaluate herbage accumulation (leaf, stem and dead material), grazing efficiency and losses of mulato grass (a Brachiaria ruziziensis × Brachiaria brizantha cv. Marandu hybrid) subjected to strategies of rotational stocking management.
Sci. agric. (Piracicaba, Braz.). Publicado em: 2013-08
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20. Effect of biochar, chicken litter and NPK on soil fertility, growth and nutrition of sweet orange Pêra-Rio in with Antropic Soil (Terra Mulata) in the Amazonas / Efeito do uso de biocarvão, cama de frango e NPK na fertilidade do solo, no crescimento e na nutrição da laranjeira "Pêra-Rio" em Latossolo Amarelo com a Antrópico (Terra Mulata) no Amazonas
The Amazonian soil presents mostly low natural fertility, however, patches of dark colored soil have been discovered, and are characterized by intense high fertility called Anthropogenic Dark Earths. Adjacent to these soils, Terra Mulata calls attention to the less dark coloration, lower fertility and higher extensions. The orange Pêra-Rio is an important c
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/02/2012
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21. Ecophysiological responses to drought and salinity in the cosmopolitan invader Nicotiana glauca
Nicotiana glauca, a shrub native to southern South America, is widely distributed in the Americas, from Patagonia to the USA, from zero up to 3,700 m; it rapidly invades disturbed environments. In Venezuela, it has been reported from zero up to 2,000 m growing in contrasting conditions of relative humidity, temperature, rainfall, and salinity. In order to ga
Braz. J. Plant Physiol.. Publicado em: 2012-09
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22. Ecologia trÃfica de Rhinella hoogmoedi Caramaschi e Pombal, 2006 (Anura, Bufonidae) em uma floresta Ãmida do estado do CearÃ, Brasil / Trophic ecology of Rhinella hoogmoedi Caramaschi e Pombal, 2006 (Anura, Bufonidae) in a humid forest in the State of CearÃ, Brazil.
The understanding of trophic relations among species is essential for the comprehension of their ecological evolutionary history, as well as in the understanding of how communities are structured. The consumption of the same food resource by two or more species may result in the evolution of mechanisms capable of reducing this inter- specific competition, wi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/05/2011
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23. Controles da produção primária em um Córrego de Mata Atlântica / Controls of primary production in an Atlantic Rainforest Stream
This dissertation consists of two chapters, each corresponding to an independent study. In an Atlantic Rainforest stream, Rio de Janeiro, Brazil, the effects of herbivores and of environmental controls on periphyton were studied. In the first experiment I tested the effects of the shrimp Potimirim glabra, an ecosystem engineer, on the metabolic parameters of
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/02/2011
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24. Influencia de la pérdida foliar sobre la cosecha en el cv. Gruesa, Musa acuminata Colla (AAA), cultivado bajo invernadero en las Islas Canarias
The banana cultivar Gruesa, a local Dwarf Cavendish selection, is increasingly planted in the Canary Islands, both in greenhouse and in the open air. Both methods present some degree of leaf loss throughout the crop cycle: the leaves of greenhouse plants are traditionally cut back after flowering, and open air plantations experience frequent wind damage. A t
Revista Brasileira de Fruticultura. Publicado em: 21/01/2011