Results 41 to 50 of about 58,703 (187)

Emissão de folhas e início de acumulação de amido em raízes de uma variedade de mandioca em função da época de plantio Leaf emergence and beginning of starch accumulation in roots of a cassava variety as a function of planting date

Ciência Rural, 2007
O número de folhas acumulado (NF) na haste principal está associado com o aparecimento de vários estádios de desenvolvimento da cultura da mandioca. O início de acumulação de amido (IAA) nas raízes tuberosas da mandioca marca o início da translocação dos
Alfredo Schons, Nereu Augusto Streck, Bruno Kraulich, Diego Garrido Pinheiro, Alencar Junior Zanon   +4 more
doaj   +1 more source

Estimativa do filocrono em calêndula Estimating the phyllochron in calendula

Ciência Rural, 2008
O objetivo deste trabalho foi estimar o filocrono em plantas de calêndula (Calendula officinalis L.) cultivadas em diferentes épocas de semeaduras. Realizaram-se três épocas de semeaduras: 06/04/2005, 23/06/2005 e 03/10/2006, no interior de uma estufa ...
Jana Koefender, Nereu Augusto Streck, Galileo Adeli Buriol, Roberto Trentin   +3 more
doaj   +1 more source

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
openaire   +2 more sources

Características morfogênicas e estruturais do capim-tanzânia submetido a doses de fósforo e nitrogênio Morphogenetic and structural characteristics of tanzaniagrass submited to phosphorus and nitrogen fertilization

Revista Brasileira de Zootecnia, 2007
O experimento foi realizado em casa de vegetação, no período de maio a agosto de 2005, com o objetivo de avaliar o efeito da adubação fosfatada e nitrogenada sobre as características morfogênicas e estruturais do capim-tanzânia.
Neusete Maria da Silva Patês, Aureliano José Vieira Pires, Cristina Cavalcante Felix da Silva, Luciana Carvalho Santos, Gleidson Giordano Pinto de Carvalho, Mário Alberto Lopes Freire   +5 more
doaj   +1 more source

Incorporating a Chronology Response into the Prediction of Leaf Appearance Rate in Winter Wheat [PDF]

Annals of Botany, 2003
The prediction of leaf appearance rate (LAR) is an important part of many crop simulation models. Most wheat simulations models assume that LAR is affected by temperature and photoperiod. This assumption ignores the fact that seed reserves contribute to a greater LAR of the first two leaves and that the LAR of subsequent leaves decreases as a result of
Nereu Augusto, Streck, Albert, Weiss, Q, Xue, P Stephen, Baenziger   +3 more
openaire   +2 more sources

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

Response of Winter Wheat (Triticum Aestivum L.) Canopy, Leaf Chlorophylland Yield to Nitrogen Fertilizer Application Methods

پژوهشهای زراعی ایران, 2011
In order to evaluate the effect of different nitrogen application methods on wheat canopy, leaf chlorophyll, and yield, a field experiment with a split plot arrangement in complete randomized block design with four replicates was conducted in 2006. Basal
M. Moosazadeh M. Moosazadeh, R. Baradaran, M. J Seghatol Eslami   +2 more
doaj   +3 more sources

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

Determining the phyllochron and final leaf pair number in on-farm cut dahlia cultivars

Ornamental Horticulture, 2023
Dahlia is an important ornamental crop and widely used as a garden plant in beds and mixed borders as well as a cut flower in bouquets and flower arrangements.
Moara Eliza Siqueira Fernandes, Thaís Pires Roso, Letícia Ferronato, Charles Patrick de Oliveira de Freitas, Regina Tomiozzo, Lilian Osmari Uhlmann, Alencar Júnior Zanon, Nereu Augusto Streck   +7 more
doaj   +1 more source

PENGGUNAAN TEPUNG DAUN ECENG GONDOK (Eichornia crassipes) PADA RANSUM KOMERSIL TERHADAP PENAMPILAN JANGKRIK (Gryllidae)

Al-Ulum, 2019
The purpose of this study was to determine the effect of mixing commercial ration with water hyacinth leaf meal on the performance of crickets. This study used a completely randomized design (CRD) with five treatments and four replications ie without ...
Siti Dharmawati, Neni Widaningsih, Supirah Supirah   +2 more
doaj   +1 more source