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Registros recuperados: 76
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A research and network strategy for sustainable sorghum and pearl millet production systems for Latin America Open Agri
B.V.S..
Palavras-chave: Sorghum; Soil ph; Millets; Genotypes; Tolerance; Grain; Leaf area; Cereals; Hybrids; Breeds (animals).
Ano: 2000 URL: http://agropedia.iitk.ac.in/openaccess/?q=node/4217
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Achieving high groundnut yields Open Agri
C.L.L..
Palavras-chave: Groundnuts; Electrophoresis; Leaf area; Oilseeds; Area; Genes; Tropical zones; Seasons; Fungi; Insecticides.
Ano: 1996 URL: http://agropedia.iitk.ac.in/openaccess/?q=node/4186
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Aspectos fenológicos da cultivar de milho BRS-1030 na Região de Paragominas, PA. Infoteca-e
ALVES, L. W. R..
bitstream/item/168563/1/CPAF-AP-2017-COT-150-Aspectos-fenologicos.pdf
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Rendimento de grão.; Área foliar; Fenologia; Zea mays; Milho.; Leaf area; Phenology; Grain yield.
Ano: 2017 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1079382
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Basal N fertilization increases productivity of rainfed upland rice International Rice Research Institute
Singh, R. K.; Singh, C. V..
p.33-34
Palavras-chave: Basal dressings; Crop yield; Leaf area; Leaves; Nitrogen fertilizers; Plant height; Roots; Split dressings; Tillers; Upland rice; Yield components.
Ano: 2005 URL: http://hdl.handle.net/123456789/1167
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Biomass partitioning and leaf area of Pinus radiata trees subjected to silvopastoral and conventional forestry in the VI region, Chile RChHN
RODRÍGUEZ,ROLANDO; HOFMANN,GLENN; ESPINOSA,MIGUEL; RÍOS,DARCY.
The effects of silvicultural regimes on leaf area and biomass distribution were analyzed in 16-year old Pinus radiata trees growing in the semiarid zone of Chile. Three stands with different silvopastoral management were compared with a conventionally managed stand. Data were obtained through destructive sampling of 36 trees and analyzed by MANOVA and regression models of ANCOVA. Results show that the management regime affects the leaf area. Specific leaf area was affected by both silvicultural regime and crown position. Total biomass per tree under the silvopastoral regime was 2.1 to 2.5 times larger than in the conventional forestry regime. However, aboveground biomass partitioning was neither affected by the silvicultural regime nor by the schemes of...
Tipo: Journal article Palavras-chave: Leaf area; Biomass; Silvopastoral management.
Ano: 2003 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2003000300008
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Combined effects of low light and water stress on Jatropha curcas L. promotes shoot growth and morphological adjustment Acta Botanica
Carneiro,Isabella Christina Silveira; Pereira,Eduardo Gusmão; Souza,João Paulo.
Jatropha curcas (physic nut) is a plant with economic and pharmaceutical uses. Basic studies on the influence of environmental factors on the early development of J. curcas are important for improving farming techniques and increasing productivity. This study investigated the adjustments of J. curcas to the environmental factors of drought and light stress in order to determine which factors most strongly affect the allocation of biomass during early growth. Leaves, stems, and roots of young plants were sampled and leaf area was measured during January and June in 2011. Plants of J. curcas that were grown in shade and subjected to water stress showed higher biomass allocation to aerial parts (mainly stems), which can be explained as a strategy for...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Growth; Jatropha curcas; Leaf area; Light stress; Water deficit.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000400467
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Complex bioclimatic and soil gradients shape leaf trait variation in Embothrium coccineum (Proteaceae) among austral forests in Patagonia RChHN
SOUTO,CINTIA P; PREMOLI,ANDREA C; REICH,PETER B.
Patterns of trait variation may be adaptive when vary in relation to an environmental gradient. In particular, leaf traits can affect productivity and competitive ability. We identify patterns of leaf size and shape variation with environmental heterogeneity in one of the most widespread tree species within temperate South America: Embothrium coccineum (Proteaceae). We collected leaf specimens and composite soil samples from 35 populations between 38° and 55° S latitude in Patagonia, covering a wide range of mean annual precipitation (MAP) and mean annual temperature (MAT). At each location, we measured nine morphological traits, some of which were cross correlated hence we focus on a smaller number of representative traits. We hypothesized that leaf area...
Tipo: Journal article Palavras-chave: Leaf shape; Complex gradients; Leaf area; Dry mass; SLA.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2009000200004
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Crescimento e partição da biomassa de mudas de mulungu sob adubação fosfatada e inoculação micorrízica PFB - Pesquisa Florestal Brasileira
Leite, Tiago de Sousa; Freitas, Rômulo Magno Oliveira de; Dombroski, Jeferson Luiz Dallabona; Leite, Moadir de Sousa; Rodrigues, Mara Raquel de Oliveira.
O objetivo desse estudo foi avaliar o crescimento inicial e partição da biomassa de mudas de mulungu (Erythrina velutina Willd.) submetidas a diferentes doses de fósforo na presença e ausência de fungos micorrízicos arbusculares (FMA’s). Foi utilizado o delineamento experimental em blocos ao acaso, num esquema fatorial 5 x 2, com quatro blocos e três plantas por unidade experimental. Os tratamentos foram compostos pela combinação de cinco doses de fósforo (0, 50, 100, 150 e 200 mg de P.kg de solo-1), utilizando-se como fonte o adubo superfosfato simples, e presença ou ausência de FMA’s. Aos 98 dias após a semeadura (DAS) foram avaliadas as variáveis: altura da parte aérea, diâmetro do colo, número de folhas, índice de conteúdo de clorofila foliar, matéria...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Recursos Florestais; Nutrição Mineral Matéria seca; Área foliar; Índice de qualidade de Dickson Dry matter; Leaf area; Dickson quality index.
Ano: 2014 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/642
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Cucumber seedling dependence on cotyledonary leaves for early growth PAB
Bisognin,Dilson Antônio; Velasquez,Luis; Widders,Irvin.
The objective of this work was to evaluate the dependence of cucumber (Cucumis sativus L.) seedlings on cotyledonary leaves for early growth and establishment. Sets of two uniform emerging seedlings were used to quantify the initial growth and dry matter accumulation, as well as the intensity and stage of cotyledon damage in seedling establishment and to determine cotyledon protein, amino acid and carbohydrate contributions to the growing seedling. Cucumber seedling establishment was found to be highly dependent on cotyledonary leaves. Root system establishment was highly dependent on the health of the aerial part. One cotyledon was enough to maintain aerial growth of seedlings after unfolding the first true leaf. Cucumber seedlings depended on both...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cucumis sativus; Cotyledon excision; Cotyledon coverage; Dry matter; Leaf area.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2005000600002
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Cytoplasmic male-sterility affects expression of resistance to Shoot Bug (Peregrinus maidis), Sugarcane Aphid (Melanaphis sacchari) and Spotted Stem Borer (Chilo partellus) in Sorghum Open Agri
Dhillon, M.K.,( Mukesh K. Dhillon ).
Palavras-chave: Cytoplasm; Hybrids; Sorghum; Genes; Sugarcane; Leaf area; Biological interaction; Plant production; Electrophoresis; Tropical zones.
Ano: 2006 URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3195
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Cytoplasmic male-sterility affects expression of resistance to Shoot Bug (Peregrinus maidis), Sugarcane Aphid (Melanaphis sacchari) and Spotted Stem Borer (Chilo partellus) in Sorghum Open Agri
Dhillon, M.K.,( Mukesh K. Dhillon ).
Palavras-chave: Cytoplasm; Hybrids; Sorghum; Genes; Sugarcane; Leaf area; Biological interaction; Plant production; Electrophoresis; Tropical zones.
Ano: 2006 URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3196
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Development of mint (Mentha piperita L.) grown on biosolids: evaluation of productivity and essential oil content BABT
Scavroni,Joseane; Ferreira,Leonardo Cesar; Valmorbida,Janice; Boaro,Carmen Sílvia Fernandes.
Development of Mentha piperita L . on biosolids amended soil with levels equivalent to 0, 28, 56 and 112 t ha-1 was evaluated. In order to measure the productivity and its relation with mint essential oil yield, different indices were determined: leaf area, total and several organ dry matter, leaf area ratio, specific leaf area, net assimilation rate and relative growth rate at 30, 44, 58, 72 and 86 days after planting (DAP), and essential oil yield at 90, 110 and 120 DAP. Physiological indices revealed that biosolids prolonged the vegetative phase of the plants, which adapted themselves to the presence of biosolids with time. Plants showed inverse behaviors in relation to productivity, resulting from the primary metabolism, represented by the shoot dry...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Growth analysis; Peppermint; Essential oil; Sewage-sludge; Leaf area; Dry matter.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000200014
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Differences in morphological and physiological leaf characteristics between Tabebuia aurea and T. impetiginosa is related to their typical habitats of occurrence Acta Botanica
Capuzzo,Juliana Pfrimer; Rossatto,Davi Rodrigo; Franco,Augusto César.
The genus Tabebuia is representative of the Cerrado biome, occurring in savanna and forest formations. These vegetation types are associated with distinct environmental conditions in terms of water availability, microclimate and soil properties. We compared morphological and physiological traits between Tabebuia aurea (Silva Manso) Benth. & Hook. f. ex S. Moore, which is typical of the savanna vegetation, and T. impetiginosa (Mart. ex DC.) Standl, which is commonly found in the gallery forests that occur along streams and rivers. Both were sampled in savanna conditions under full sun. The savanna species had higher values of leaf and petiole thickness, specific leaf mass, maximum CO2 assimilation on a leaf area basis, stomatal conductance,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cerrado; CO2 assimilation; Leaf area; Photosynthetic pigments; Tabebuia.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062012000300002
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Dinámica de crecimiento y rendimiento de alfalfa en respuesta a diferente frecuencia de corte Colegio de Postgraduados
Mendoza Pedroza, Sergio Ibán.
En México, la alfalfa es la leguminosa más utilizada en la alimentación del ganado lechero, debido a su alta cantidad y calidad de forraje obtenido por superficie. El objetivo del presente estudio fue determinar el efecto de la frecuencia de corte en la dinámica de crecimiento, rendimiento y calidad de la alfalfa. El estudio se realizó de agosto de 2006 a agosto de 2007 en el Colegio de Postgraduados con alfalfa Variedad “San Miguelito”. Los tratamientos fueron cuatro frecuencias (3, 4, 5 y 6 semanas para primavera-verano y 4, 5, 6 y 7 semanas para otoño-invierno) distribuidos aleatoriamente en un Diseño Experimental Completamente al Azar, con 4 repeticiones. En rendimiento acumulado existieron diferencias significativas (P<0.05), mostrando el menor...
Tipo: Tesis Palavras-chave: Medicago sativa; Frecuencia de corte; Rendimiento; Calidad; Área foliar; Maestría; Ganadería; Cutting frequency; Yield; Quality; Leaf area.
Ano: 2008 URL: http://hdl.handle.net/10521/1581
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Dinâmica de crescimento da abobrinha italiana em duas estações de cultivo - doi: 10.4025/actasciagron.v33i2.5952 Agronomy
Strassburger, André Samuel; Universidade Federal de Pelotas; Peil, Roberta Marins Nogueira; Universidade Federal de Pelotas; Fonseca, Leandro Andrade da; Universidade Federal de Pelotas; Aumonde, Tiago Zanatta; Universidade Federal de Pelotas; Mauch, Carlos Rogério; Universidade Federal de Pelotas.
O objetivo deste trabalho foi quantificar os índices de crescimento, a produção e a distribuição de matéria seca da cultura da abobrinha italiana cultivada em substrato de casca de arroz in natura com solução nutritiva recirculante, em duas épocas de cultivo: primavera-verão de 2005 e verão-outono de 2006, caracterizadas, respectivamente, como períodos de alta e baixa disponibilidades de radiação solar. Cada tratamento correspondeu a uma época de amostragem, sendo a produção de matéria seca quantificada aos 0, 18, 32, 46 e 68 dias após o transplante (DAT) no cultivo de primavera-verão, e aos 0, 15, 29, 43 e 55 DAT no cultivo de verão-outono. A produção de matéria seca foi maior quando a disponibilidade de radiação solar foi mais elevada. Nessa situação...
Tipo: Pesquisa de Campo Palavras-chave: 5.00.00.00-4; 5.01.00.00-9 Cucurbita pepo L.; Produção de matéria seca; Hidroponia; Área foliar; Radiação solar; Análise de crescimento 5.01.03.00-8 Cucurbita pepo L.; Dry matter production; Hydroponics; Leaf area; Solar radiation; Growth analysis.
Ano: 2011 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5952
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Drought Research Priorities for the Dryland Tropics Open Agri
F.R..
Palavras-chave: Crops; Soil water; Transpiration (animals); Water balance; Weather hazards; Drought stress; Harvest index; Leaf area; Water potential.
Ano: 1988 URL: http://agropedia.iitk.ac.in/openaccess/?q=node/4045
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Efecto de aclareos en el crecimiento de una plantación de Pinus patula Schl. et Cham. en Ixtlán, Oaxaca. Colegio de Postgraduados
Rodríguez Ortíz, Gerardo.
La eficiencia de crecimiento (EC) es la relación entre el follaje o el área de albura del fuste y el incremento maderable del árbol. Con este índice es posible analizar la respuesta del crecimiento y fisiología del fuste a factores de calidad de sitio, la edad, el aclareo y la densidad del rodal. El objetivo de este trabajo fue estimar y analizar los componentes de biomasa aérea y la eficiencia de crecimiento en árboles de Pinus patula Schl. et Cham. sujetos a aclareos en una plantación en Ixtlán, Oaxaca. En 2009 se realizaron muestreos destructivos en 30 árboles localizados en parcelas aclareadas y un testigo, para obtener muestras del componente aéreo. La biomasa de acículas por rama se estimó utilizando variables más susceptibles a las variaciones del...
Palavras-chave: Aclareos; Biomasa aérea; Albura; Area foliar; Eficiencia de crecimiento; Thinning; Aboveground biomass; Sapwood; Leaf area; Growth efficiency; Doctorado; Fisiología Vegetal.
Ano: 2010 URL: http://hdl.handle.net/10521/318
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Effect of GA3, KNO3, and removing of basal point of seeds on germination of sweet granadilla (Passiflora ligularis Juss) and yellow passion fruit (Passiflora edulis f. flavicarpa) Rev. Bras. Frutic.
Cárdenas,Julián; Carranza,Carlos; Miranda,Diego; Magnitskiy,Stanislav.
Passiflora seeds germinate erratically presenting difficulties for their handling in a greenhouse. The effect of removing of basal point of seeds (RB) and pre-imbibition of seeds of sweet granadilla and yellow passion fruit in 50, 100, 200, and 400 mg mL-1 solutions of gibberellic acid (GA3) or 0.1% KNO3 solution was studied. The experiment was conducted in greenhouses in La Plata, Colombia. Two accessions PrJ1 and PrJ2 of sweet granadilla were evaluated. There were calculated the final percentage of germination (PG), mean germination time (MGT), and the mean germination rate (MGR). The leaf area and dry mass of seedlings were measured 22 days after sowing (das); with this data, specific leaf area and relation root/shoot were calculated. In all cases, the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Pre-imbibition; Final percentage of germination; Mean germination time; Mean germination rate; Leaf area.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452013000300023
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Effect of Herbicides on Yield and Yield Components of Hybrid Maize (Zea mays) Planta Daninha
KHAN,I.A.; HASSAN,G.; MALIK,N.; KHAN,R.; KHAN,H.; KHAN,S.A..
ABSTRACT Maize crop (Zea mays) is facing lots of problems from different pests throughout Asia, including Pakistan. Weed infestation is one of the serious pests that remarkably decrease the grain yield in maize. In Khyber Pakhtunkhwa province of Pakistan, the trend of maize hybrid cultivation is gaining the attention of the farmers due to its higher production. Therefore, in this research we tested herbicides (Stomp 330 E, Dual gold 960 EC, 2,4-D, ester) in maize hybrids (P-3025, P-32T78, P-3203). The experiment was done in RCB design with split plots arrangement, where maize hybrids were kept in main plots, while herbicides were assigned to the subplots. Each treatment was repeated three times at the New Developmental Farm (NDF), at the Peshawar...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Herbicides; Leaf area; Maize hybrids; Weeds.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000400729
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Effects of fruiting spur thinning on fruit quality and vegetative growth of sweet cherry (Prunus avium) Ciencia e Investigación Agraria
Ayala,Marlene; Andrade,María P.
High density sweet cherry (Prunus avium) orchards using highly productive cultivars and dwarfing rootstocks usually require crop load regulation to achieve high quality fruit. Among the strategies used to reduce crop load in highly productive combinations, fruiting spur thinning (FST, spur extinction) before budbreak has been suggested to be an effective way to improve fruit size. Currently, there is little information about the effect of spur thinning on sweet cherry orchards using self-fertile cultivars grafted on vigorous rootstocks. For this reason, the objective of the present study was to evaluate the effects of manual FST on fruit quality and vegetative growth of the cultivar 'Lapins' grafted on the rootstock 'Mazzard F-12/L with 0, 50 and 75% spur...
Tipo: Journal article Palavras-chave: Crop load regulation; Fruit growth; Fruit quality; Leaf area; Leaf to fruit ratio; Prunus avium; Shoot growth; Spur extinction.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202009000300011
Registros recuperados: 76
Primeira ... 1234 ... Última
 

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