Leaf Life Span
Mostrando 1-12 de 19 artigos, teses e dissertações.
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1. CARACTERÍSTICAS MORFOGÊNICAS E ESTRUTURAIS DO SORGO FORRAGEIRO SUBMETIDO A LOTAÇÃO CONTÍNUA COM NOVILHOS DE CORTE SUPLEMENTADOS
Resumo A morfogênese é uma valiosa ferramenta para a compreensão da dinâmica do pasto, porém os estudos morfogênicos referentes à cultura do sorgo ainda são escassos. O objetivo do presente estudo foi avaliar os efeitos de diferentes níveis de suplementação sobre as características morfogênicas do sorgo forrageiro. O experimento foi conduzido na
Ciênc. anim. bras.. Publicado em: 30/09/2019
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2. Morphogenic, structural, productive and bromatological characteristics of Braquiária in silvopastoral system under nitrogen doses
ABSTRACT. This study aimed to evaluate the effect of different doses of nitrogen fertilization on the morphogenic, structural, productive and chemical composition of Urochloa decumbens (Stapf) R. D. Webster cv. Basilisk in a silvopastoral system with eucalyptus. The experimental treatments consisted of pastures of Basilisk cultivar, fertilized with 0, 100, 2
Acta Sci., Anim. Sci.. Publicado em: 07/01/2019
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3. Evidence of the effects of fire on branching and leaf development in cerrado trees
ABSTRACT We discuss evidence of effects of an accidental fire on shoot growth and leaf development in six cerrado tree species with distinct leaf phenologies. Buds of all six species were marked before shoot and leaf emergence in the dry season. After fire, leaf and shoot growth were monitored weekly and specific leaf area (SLA) was determined. Shoot order w
Acta Bot. Bras.. Publicado em: 2017-12
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4. Frequencies and intensities of defoliation in Aruana guineagrass swards: morphogenetic and structural characteristics
The objective of this study was to evaluate the morphogenetic and structural characteristics of Aruana guineagrass pastures (Panicum maximum cv. Aruana) subjected to rotational stocking by sheep. The treatments corresponded to grazing when swards reached 95 or 98% of interception of incident light (LI) until post-grazing heights of 10 and 15cm and were alloc
R. Bras. Zootec.. Publicado em: 2012-08
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5. Morfogênese, acúmulo de forragem e teores de nutrientes de Panicum maximum cv. Tanzânia submetido a diferentes severidades de desfolhação e fertilidades contrastantes / Morphogenesis, forage net accumulation and nutritional status of Panicum maximum cv Tanzânia under contrasting fertilization rates and grazing intensities
Nitrogen is the most important nutrient regulating pasture production. Response to N fertilization depends on residual leaf area index and other nutrient availability. The aim of this study was to evaluate morphogenetic and structural characteristics, grazing interval, forage yield and nutritional status of Tanzania guinea grass under contrasting defoliation
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 05/12/2011
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6. Efeito do nitrogênio sobre o desenvolvimento foliar e sua consequência na estrutura da copa em Senna alata (L.) Roxb. (Leguminosae) / Effect of nitrogen of leaf development and its consequences in the canopy vertical structure in Senna alata (L.) Roxb. (Leguminosae)
O tempo de vida e o desenvolvimento foliar sempre foram questões que intrigaram a humanidade, para além da questão científica, há um interesse até mesmo estético, uma vez que as folhas senescentes do hemisfério Norte e algumas do hemisfério Sul mudam sua coloração de verde para vermelho ou para um amarelo vistoso. Do ponto de vista científico o t
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/10/2011
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7. Morphogenesis of Tanzania guinea grass under nitrogen doses and plant densities
The objective of this work was to evaluate effects of nitrogen fertilization and plant density on morphogenesis of Tanzania guinea grass. It was used a random block design with 12 treatments and two replications in a 4 × 3 factorial arrangement, with four doses of nitrogen (N) (without N application, 80, 160 or 320 kg/ha.year) and three plant densities (9,
Revista Brasileira de Zootecnia. Publicado em: 2011-07
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8. Oviposição, desenvolvimento e reprodução de Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) em diferentes hospedeiros de importância econômica
The host selection for oviposition by Spodoptera frugiperda (J.E. Smith) among corn, millet, cotton and soybean, and its relationship with the biological characteristics were investigated. Free and non-choice tests for oviposition using plots containing five plants each, from each host in plastic greenhouse, resulted in similar oviposition preference among t
Neotropical Entomology. Publicado em: 2010-12
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9. Longevidade foliar, compostos fenolicos e nitrogenados em arvores e lianas de um fragmento de Cerrado na Estação Experimental de Itirapína, São Paulo / Leaf life span, nitrogenous and phenolic compunds in trees and lianas from a Cerrado fragment in the Itirapina experimental station in São Paulo
Trees and lianas present different strategies for allocating resources during the phonological cycle. Whereas Lianas are important floristic components and account for a significant number of rainforest species, few studies have been conducted in the Cerrado (a savanna like vegetation) biome. The duration of the leaf life span in different species reflects b
Publicado em: 2010
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10. Características morfogênicas e estruturais de faixas etárias de perfilhos em pastos de capim-marandu submetidos à lotação contínua e ritmos morfogênicos contrastantes / Abstract Morphogenetic and structural characteristics of tiller age categories on continuously stocked marandu palisadegrass swards subjected to contrasting morphogenetic rhythms
Recently, studies focusing on morphogenetic and structural characteristics have become increasingly important since they facilitate the understanding of forage plants when subjected to grazing. Quite often nitrogen fertilisation is used as a means of increasing growth rhythm of plants that, because of the turnover in tiller population, may result in signific
Publicado em: 2009
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11. Características morfogênicas e estruturais e acúmulo de forragem do capim-tanzânia submetido a intensidades e freqüências de corte / Morpho-structural characteristics and forage accumulation of Tanzania grass subjected to different cutting intensities and frequencies
The experiment was conducted in an area of the Animal Science Department, at the Federal University of Viçosa - UFV, MG, from 17/12/2004 to 08/04/2005, with the objective of evaluating morpho-structural characteristics and forage accumulation of Panicum maximum cv. Tanzania under different cutting intensities and frequencies. Two heights (25 and 50 cm) and
Publicado em: 2007
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12. Autoecologia de Bauhinia holophylla Steud. (Leguminosae-Caesalpiniolideae), na Reserva Biologica e Estação Experimental de Moji Guaçu, SP
A population of Bauhinia holophylla located at a cerrado area in the Reserva Biológica e Estação Experimental de Moji Guaçu was studied in relation to reproductive phenology, leaf life span, seed predation, seed germination and aspects of plant regeneration. The distribution pattern of the juvenile and adult population is considered agregated. This popul
Publicado em: 2006