Vegetative Index
Mostrando 13-24 de 74 artigos, teses e dissertações.
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13. Silicon and methyl jasmonate in the vegetative development and genetic stability of rice
ABSTRACT. Given the high demand for food worldwide, options for maximizing food production with minimum environmental impact are needed. Therefore, the objective of the present study was to evaluate the effect of silicon (Si) and methyl jasmonate (MeJA) in the vegetative development and genetic stability of rice plants, BRSMG Caravera cultivar. The treatment
Acta Sci., Agron.. Publicado em: 28/03/2019
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14. Relationship between the normalized difference vegetation index and leaf area in vineyards
ABSTRACT In vineyards, the monitoring of leaf area is used to guide management practices in order to produce grapes with quality and enological potential. Remote sensing has been used to estimate leaf area by means of vegetation indices. This work aimed at determining the temporal evolution of the Normalized Difference Vegetation Index (NDVI) while associati
Bragantia. Publicado em: 25/03/2019
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15. Leaf area estimate of Pennisetum glaucum by linear dimensions
ABSTRACT. Leaf area measurements are of the main parameters used in agronomic studies to evaluate plant growth. The current study used a non-destructive method based on linear leaf dimensions (length and width) to select the regression model to estimate millet (Pennisetum glaucum) leaf area. For two millet genotype (IPA BULK 1 BF and ADR 300) 128 randomly-ch
Acta Sci., Anim. Sci.. Publicado em: 25/02/2019
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16. Selection and genetic parameters for interpopulation hybrids between kouilou and robusta coffee
ABSTRACT Selection of hybrid coffee plants coming from crosses between divergent populations is particularly relevant for the success of breeding programs. This study aimed to outline the best selection strategy in a hybrid population of Coffea canephora var. kouilou and robusta by estimating intrapopulation genetic parameters. Twenty full-sib progenies obta
Bragantia. Publicado em: 11/02/2019
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17. Relationship Among Crop Systems, Soil Cover, and Water Erosion on a Typic Hapludox
ABSTRACT Several soil conservation practices are used to reduce water erosion and ensure sustainable agriculture. An effective crop management practice is intercropping, in which two or more crops with different architectures and vegetative cycles are grown simultaneously in the same area. We hypothesized that intercropping of corn and jack-bean increases so
Rev. Bras. Ciênc. Solo. Publicado em: 08/03/2018
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18. Energy balance partitioning and evapotranspiration from irrigated Muskmelon under Semi-Arid Conditions
ABSTRACT The Mossoró-Assu-Baraúna district, Rio Grande do Norte State (RN), is recognized by the intense production of horticulture, mainly muskmelon for export. However, this region is often devastated by intense droughts. Thus, the muskmelon production is predominantly under irrigated condition and, due to constant threat of water resources collapse on t
Bragantia. Publicado em: 2018-03
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19. Agaricus subrufescens: substratum nitrogen concentration and mycelial extraction method on antitumor activity
ABSTRACT Antitumor activity of Agaricus subrufescens has been shown on vegetative mycelium and basidiocarp. However, few studies have assessed the effect of A. subrufescens cultivation conditions and extraction methods on antitumor activity. This study evaluated the effect of nitrogen concentration on the cultivation medium of A. subrufescens and the extract
An. Acad. Bras. Ciênc.. Publicado em: 2016-12
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20. Management of consecutive cuts in the production and quality of wintergreen paspalum seeds
ABSTRACT The objective of this study was to evaluate the practice of consecutive cuts in the production and quality of Paspalum guenoarum seeds of the "Azulão" ecotype. The experimental design used was in completely randomized blocks with four replications. The treatment included three cuts in succession: zero cut, one cut, two cuts, and three cuts. The var
R. Bras. Zootec.. Publicado em: 2016-10
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21. Avaliação de doze cultivares de laranja doce de maturação precoce na região sudoeste do Estado de São Paulo. / Evaluation of twelve early maturing sweet orange cultivars in the southwestern São Paulo State
The number of sweet orange cultivars used in commercial orchards in Brazil is restricted, although the diversity of genera, species, cultivars and clones of citrus is great. However, the industrial processing is based on four main cultivars, the \ Hamlin\ , as early maturing, the \ Pera\ , as mid-season, and \ Natal\ and \ Valencia\ as late maturing cultivar
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/06/2012
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22. Propuesta de muestreo para Neohydatothrips signifer (Thysanoptera: Thripidae) en el cultivo de maracuyá
The objective of this work was to develop a proposal for Neohydatothrips signifer sampling in the passion fruit crop. Average thrip infestation on the crop was correlated with the meteorological variables of relative humidity, temperature, and precipitation using Pearson correlation coefficient. Likewise, determinations were done for the aggregation rate of
Pesq. agropec. bras.. Publicado em: 2012-11
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23. Mapeamento da área cultivada e estimativa do rendimento de grãos de arroz irrigado a partir de modelos agrometeorológicos-espectrais para o Rio Grande do Sul / Crop area mapping and crop rice yields estimation using agrometeorological-spectral models for Rio Grande do Sul state, Brazil
The objective of this study was to characterize the irrigated rice crop at Rio Grande do Sul State and to test a methodology to define the cultivated area and to estimate the grain yield through the adjustment of the agrometeorological-spectral models. The study was developed for the six rice-growing regions of Rio Grande do Sul. Data of the irrigated rice g
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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24. Fotossíntese, crescimento e composição química em plantas de Theobroma cacao L. submetidas a diferentes concentrações de silicato de potássio e sua interação com insetos-praga / Photosynthesis, growth and chemical composition in plants of Theobroma cacao L. subjected to different concentrations of potassium silicate and its interaction with insect-pests
The control of insect pests through the use of pesticides, is still the most method used in the cultivation of cocoa. However, due to environmental issues, there need to seek new alternatives of control less harmful the environment and to humans. In this context, silicon is a nutrient that is being used in various cultures, due to its beneficial effects on p
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/02/2011