Results 21 to 30 of about 52,441 (254)

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

Approaches to Modeling Potato Leaf Appearance Rate [PDF]

Agronomy Journal, 2006
Two approaches quantifying potato (Solanum tuberosum L. cv. Kennebec) leaf appearance rates were evaluated: a thermal time approach using the phyllochron, and a nonlinear temperature response approach using a modified β distribution function. Leaf appearance measurements at six temperature treatments (14/10, 17/12, 20/15, 23/18, 28/23, and 34/29°C ...
David H. Fleisher, Rose M. Shillito, Dennis J. Timlin, Soo‐Hyung Kim, Vangimalla R. Reddy   +4 more
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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 rate and phyllochron on millet sowing dates

REVISTA BRASILEIRA DE MILHO E SORGO, 2023
The objective of this study was to determine the leaf appearance rate and phyllochron as affected by millet sowing dates. The experiment was conducted with six sowing dates (11/28/2019, 12/03/2019, 12/10/2019, 12/17/2019, 12/30/2019 and 01/14/2020). The sowing was performed in plots with six rows of 2 m length and spacing of 0.25 m between rows.
Felipe Manfio Somavilla, Alberto ​Cargnelutti Filho, Ismael Mario Márcio Neu, Daniela Lixinski Silveira, Valéria Escaio Bubans, Gabriel Elias Dumke   +5 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
openaire   +2 more sources

Quantification of Tobacco Leaf Appearance Quality Index Based on Computer Vision

IEEE Access, 2022
The appearance quality index of tobacco leaves is widely used in the tobacco industry. But in national standards for flue-cured tobacco, the specified indicators only have qualitative descriptions, and a few have a range of quantitative values, lacking quantitative calculation methods, which affects the effective use of these indicators in tobacco ...
Tiannan Wu, Yunwei Zhang, Zewu Gong, Dongfeng Lu   +3 more
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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

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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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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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