Vegetative Index
Mostrando 1-12 de 74 artigos, teses e dissertações.
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1. High-throughput phenotyping by RGB and multispectral imaging analysis of genotypes in sweet corn
RESUMO O milho doce (Zea mays subsp. saccharata) destina-se principalmente ao processamento industrial. Otimizar tempo e custos durante o melhoramento de plantas é fundamental. Uma alternativa é o uso de fenotipagem de alto rendimento (HTP) indiretamente associada a caracteres agronômicos e teores de clorofila. Este trabalho teve como objetivo (i) verific
Horticultura Brasileira. Publicado em: 2022
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2. Superiority index based on target traits reveals the evolution of Brazilian soybean cultivars over last half-century
ABSTRACT The objective of this work was to assess the breeding influences in different agronomic and physiological traits in Brazilian soybean cultivars, released between 1965 and 2011, to identify traits associated with modern cultivars. A total of 29 cultivars were evaluated in two locations in the 2016/17 crop season. Genotype selection based on agronomic
Rev. Ceres. Publicado em: 2021-08
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3. Nondestructive analysis of photosynthetic pigments in forage radish and vetch
ABSTRACT Chlorophylls and carotenoids are the main photosynthetic pigments in plants, and photosynthetic potential can be used to determine the nitrogen fixation or cycling capacity of cover crops. Therefore, this study quantified and compared the content of photosynthetic pigments in Raphanus sativus and Vicia sativa by using two different methods, namely t
Rev. Ceres. Publicado em: 2020-12
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4. CONTROLLED RELEASE FERTILIZER IN THE ROOTING AND PERFORMANCE OF CLONES OF Paratecoma peroba
ABSTRACT Paratecoma peroba is a native forest species of great economic and ecological interest, currently at risk of extinction. In addition to the difficulty of finding adult individuals of this species, plant production is limited, so the use of mini-cuttings can facilitate the spread of P. peroba. Thus, the objective of this study was to analyse the effe
CERNE. Publicado em: 2020-06
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5. Growth analysis of potato genotypes
ABSTRACT Analyzes of plant growth throughout the crop vegetative cycle are important to know the dynamics of the plant development. Thus the objective of this work was to study the development of potato genotypes throughout the crop cycle, in three environments. Experiments were conducted in Canoinhas-SC, Pelotas-RS, and Brasília-DF, Brazil, in the 2018 cro
Rev. Ceres. Publicado em: 2020-06
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6. Improvement in light utilization and shoot growth in Hymenaea stigonocarpa under high CO 2 concentration attenuates simulated leaf herbivory effects
ABSTRACT This study evaluated the photochemical responses of photosystem II and growth of Hymenaea stigonocarpa under CO2-enriched conditions with exposure to simulated herbivory events. After herbivory simulation in two distinct parts of the stem of plants (apex and base), chlorophyll a fluorescence, chlorophyll index, growth, extrafloral nectary density, l
Acta Bot. Bras.. Publicado em: 12/09/2019
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7. Yield, quality and drought sensitivity of tomato to water deficit during different growth stages
ABSTRACT In areas where the supply of water for irrigation is limited, tomato production is often subject to drought stress. In order to investigate the drought sensitivity of tomato (Lycopersicon esculentum Mill.) yield and quality during different growth stages, field and pot experiments were conducted in a high tunnel in southern China during the 2013 and
Sci. agric. (Piracicaba, Braz.). Publicado em: 02/09/2019
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8. WATER DEPLETION DEPTH FOR IRRIGATION OF POTATO CULTIVAR ÁGATA
ABSTRACT Potato (Solanum tuberosum L.) cultivation has a high demand for management and treatments during the vegetative cycle in the field. Among these requirements, water management is a limiting factor of tuber productivity and quality. This study aimed to determine the most appropriate soil water depletion depth for irrigation management in potato crops
Eng. Agríc.. Publicado em: 12/08/2019
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9. Sugarcane spatial-temporal monitoring and crop coefficient estimation through NDVI
RESUMO O uso de imagens de satélites como complemento na gestão de irrigação constitui uma base primordial no processo de tomada de decisão para a agricultura irrigada. Nesse contexto, o objetivo do trabalho foi monitorar, por meio do Índice de Vegetação por Diferença Normalizada (IVDN), a cultura da cana-de-açúcar irrigada pertencente à empresa
Rev. bras. eng. agríc. ambient.. Publicado em: 06/05/2019
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10. VEGETATIVE DEVELOPMENT AND GROWING DEGREE-DAYS OF TROPICAL AND WINTER FORAGES
ABSTRACT One of the limitations to producing irrigated forages is setting suitable biometric parameters to establish the entrance of animals to grazing areas. Such parameters can be measured or even estimated. Estimates are advantageous for being practical and able to be used for grazing optimization. This study aimed to evaluate the correlation among growin
Eng. Agríc.. Publicado em: 25/04/2019
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11. Soil cover management: initial development of pear trees hosui cultivar and its effects on soil and weeds
Resumo O manejo do solo é uma prática que pode ter marcante influência no desenvolvimento de frutíferas. Neste sentido, o objetivo do trabalho foi avaliar o efeito do uso de diferentes tipos de cobertura de solo no controle de plantas daninhas e no desenvolvimento inicial da pereira cv. Hosui. O experimento foi conduzido durante dois ciclos consecutivos
Rev. Bras. Frutic.. Publicado em: 25/04/2019
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12. Influence of Phenology and Post-Harvest Processing of Vegetal Material on the Allelopathy of Annoni Grass (Eragrostis plana) Extracts
RESUMO: O estádio fenológico da planta, a quantidade e o processamento do material vegetal são fatores que podem interferir na atividade alelopática dos extratos. Este trabalho teve como objetivo testar o efeito alelopático de extratos aquosos de folhas de capim-annoni (Eragrostis plana), invasora de pastagens naturais. Doze extratos foram elaborados, r
Planta daninha. Publicado em: 08/04/2019