Results 31 to 40 of about 55,336 (256)

Morphogenetic traits and biomass accumulation of Brachiaria brizantha cv. Xaraés subjected to nitrogen doses

Revista Brasileira de Zootecnia, 2012
The objective of this experiment was to evaluate the morphogenetic traits and biomass accumulation of Brachiaria brizantha cv. Xaraés subjected to doses of N (0, 125, 250, 375 and 500 kg.ha-1 N).
Welton Batista Cabral, Alexandre Lima de Souza, Emerson Alexandrino, Fábio Luiz Buranelo Toral, Emerson Alencar Bonelli, Leni Rodrigues de Lima   +5 more
doaj   +1 more source

Alterations in Grapevine Leaf Metabolism Occur Prior to Esca Apoplexy Appearance [PDF]

Molecular Plant-Microbe Interactions®, 2017
Esca disease is one of the major grapevine trunk diseases in Europe and the etiology is complex, since several inhabiting fungi are identified to be associated with this disease. Among the foliar symptom expressions, the apoplectic form may be distinguished and characterized by sudden dieback of shoots, leaf drop, and shriveling of grape clusters in a
Magnin-Robert, Maryline, Adrian, Marielle, Trouvelot, Sophie, Spagnolo, Alessandro, Jacquens, Lucile, Letousey, Patricia, Rabenoelina, Fanja, Harir, Mourad, Roullier-Gall, Chloé, Clément, Christophe, Schmitt-Kopplin, Philippe, Vallat, Armelle, Abou-Mansour, Eliane, Fontaine, Florence   +13 more
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Leaf appearance of annual clovers responds to photoperiod at emergence [PDF]

European Journal of Agronomy, 2016
Abstract Leaf appearance rate and time to canopy expansion of four annual clover species (arrowleaf, balansa, gland and Persian) were quantified in field and controlled environment studies. Crops sown in autumn, which experienced shortening daylengths at emergence, had a slower rate of leaf production and consequently took a longer time to initiate ...
H., Nori, D.J., Moot, A.D., Black
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Phyllochron of Paspalum notatum FL. and Coelorhachis selloana (HACK.) camus in natural pasture Filocrono de Paspalum notatum FL. e Coelorhachis selloana (HACK.) camus em pastagem natural

Scientia Agricola, 2004
Leaf appearance rate and phyllochron are related variables which play a central role in forage production. Phyllochron is the time interval between the appearance of successive leaves and varies according to a number of environmental factors, among which
Lilian Eggers, Mónica Cadenazzi, Ilsi Iob Boldrini   +2 more
doaj   +1 more source

CO2Effects on Phasic Development, Leaf Number and Rate of Leaf Appearance in Wheat [PDF]

Annals of Botany, 1997
It has been predicted that the concentration of CO2in the air could double during the 21st century. Though it is recognized that CO2-doubling could increase yield through its effects on plant photosynthesis and stomatal behaviour, it is unclear whether CO2-doubling will change phasic development in wheat.
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Crescimento, desenvolvimento e retardamento da senescência foliar em girassol de vaso (Helianthus annuus L.): fontes e doses de nitrogênio Growth, development and delay of leaf senescence in pot-grown sunflower (Helianthus annuus L.): sources and rates of nitrogen

Ciência Rural, 2007
O girassol é a quarta oleaginosa em produção de grãos no mundo e alguns genótipos são usados com finalidade ornamental para flor de corte e de vaso (girassol de vaso). O objetivo do trabalho foi avaliar o efeito de diferentes fontes e doses de nitrogênio
Joelma Dutra Fagundes, Gisele Santiago, Anderson Machado de Mello, Rogério Antônio Bellé, Nereu Augusto Streck   +4 more
doaj   +1 more source

Improving predictions of leaf appearance in field grown potato [PDF]

Scientia Agricola, 2007
The calculation of leaf appearance rate (LAR) and number of accumulated or emerged leaves (NL) on the main stem are part of many crop simulation models. The purpose of this study was to adapt and evaluate a model (WE model) for simulating the main stem LAR and NL in potato (Solanum tuberosum L.).
Streck, Nereu Augusto, Lago, Isabel, Paula, Fabiana Luiza Matielo de, Bisognin, Dilson Antônio, Heldwein, Arno Bernardo   +4 more
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Leaf Appearance in Cowpea: Effects of Temperature and Photoperiod

Crop Science, 1997
Leaf appearance in crop plants is an important process involved in canopy development. The environmental control of leaf appearance has not been studied in cowpea [Vigna unguiculata (L.) Walp.]. This study was conducted to determine whether photoperiod has any effect on the rate of leaf appearance (RLA) and to determine the phyllochron and its base ...
Craufurd, Peter Q., Subedi, M., Summerfield, R.J.   +2 more
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Impact of elevated temperature scenarios on potato leaf development Impacto de cenários de aumento de temperatura no desenvolvimento foliar da batata

Engenharia Agrícola, 2012
The objective of this study was to simulate the impact of elevated temperature scenarios on leaf development of potato in Santa Maria, RS, Brazil. Leaf appearance was estimated using a multiplicative model that has a non-linear temperature response ...
Nereu A. Streck, Lilian O. Uhlmann, Alencar J. Zanon, Dilson A. Bisognin   +3 more
doaj   +1 more source

Variability and Synchronism of Leaf Appearance and Leaf Elongation Rates of Eleven Contrasting Rice Genotypes

Agricultural Sciences, 2015
Leaf appearance and leaf elongation rates in rice play an essential role in determining the development of the plants’ architecture which affects their adaptability to varying environments. This study aimed to characterize the rates of leaf appearance and elongation on all leaves of the main culms of rice plants for 11 contrasting varieties and to ...
Egle, Rohilyn B., Domingo, Abigail J., Bueno, Crisanta Sunio, Laurena, Antonio C., Aguilar, Edna A., Santa Cruz, Pompe, Clerget, Benoît   +6 more
openaire   +3 more sources