Pressure Vapor Deficit
Mostrando 1-12 de 42 artigos, teses e dissertações.
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1. Elevated atmospheric CO2 concentration improves water use efficiency and growth of a widespread Cerrado tree species even under soil water deficit
ABSTRACT Changes in atmospheric CO2 levels are accompanied by ecological interactions involving other environmental factors, such as drought, which can severely alter the water balance of plants, thereby influencing sap flow, gas exchange, and plant growth. The objective of this study was to evaluate the water use economy, leaf gas exchange, and growth of yo
Acta Bot. Bras.. Publicado em: 19/06/2019
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2. Elevated atmospheric CO2 concentration improves water use efficiency and growth of a widespread Cerrado tree species even under soil water deficit
ABSTRACT Changes in atmospheric CO2 levels are accompanied by ecological interactions involving other environmental factors, such as drought, which can severely alter the water balance of plants, thereby influencing sap flow, gas exchange, and plant growth. The objective of this study was to evaluate the water use economy, leaf gas exchange, and growth of yo
Acta Bot. Bras.. Publicado em: 19/06/2019
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3. Soil-water-plant relationship and fruit yield under partial root-zone drying irrigation on banana crop
ABSTRACT: Climatic uncertainties have compromised water resources, which influences irrigated agriculture. Irrigation is an important alternative to mitigate the effects of water scarcity. Partial root-zone drying (PRD) is a rational use of irrigation water. This study aimed to evaluate PRD for irrigation management of banana crop, cv BRS Princesa, under sem
Sci. agric. (Piracicaba, Braz.). Publicado em: 20/05/2019
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4. Response of bell pepper to water replacement levels and irrigation times
RESUMO Diferentes horários de irrigação resultam em diferentes taxas de transpiração, devido à disponibilidade de água e sua interação com a demanda evapotranspirativa. O déficit de pressão de vapor é um indicador preciso da capacidade evaporativa da atmosfera e pode afetar as plantas, devido ao movimento da água no sistema contínuo solo-planta
Pesqui. Agropecu. Trop.. Publicado em: 08/04/2019
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5. Biometric and Physiological Responses to Water Restriction in Moringa oleifera Seedlings
ABSTRACT A water deficit in the soil can cause water stress in plants, triggering morphological and physiological changes. The aim of this work was evaluate the ecophysiological development of moringa seedlings under controlled water restriction. The experimental design was completely randomized at 40, 60, 80, and 100% of field capacity and six replicates.
Floresta Ambient.. Publicado em: 10/12/2018
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6. Photosynthetic capacity and water use efficiency in Ricinus communis (L.) under drought stress in semi-humid and semi-arid areas
ABSTRACT Castor bean is one of the crops with potential to provide raw material for production of oils for biodiesel. This species possess adaptive mechanisms for maintaining the water status when subjected to drought stress. A better understanding these mechanisms under field conditions can unravel the survival strategies used by this species. This study ai
An. Acad. Bras. Ciênc.. Publicado em: 07/12/2017
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7. Morphological Plasticity and Gas Exchange of Ligustrum lucidumW.T. Aiton in Distinct Light Conditions
ABSTRACT The objective of this study was to understand the different morpho-physiological strategies of Ligustrum lucidum, an invasive species occurring in Brazilian forest fragments under heterogeneous light conditions. Ten individuals of L. lucidum were selected and evaluated for morphological of the leaves and physiological traits. For morphological param
Braz. arch. biol. technol.. Publicado em: 2015-12
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8. Jatropha curcasand Ricinus communisdisplay contrasting photosynthetic mechanisms in response to environmental conditions
Higher plants display different adaptive strategies in photosynthesis to cope with abiotic stress. In this study, photosynthetic mechanisms and water relationships displayed byJatropha curcasL. (physic nuts) andRicinus communisL. (castor bean), in response to variations in environmental conditions, were assessed.R. communis showed higher CO2 assimilation, st
Sci. agric. (Piracicaba, Braz.). Publicado em: 2015-06
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9. Photosynthetic capacity and water use efficiency in sugarcane genotypes subject to water deficit during early growth phase
The objective of this study was to compare the gas exchange, photosynthetic capacity and water potential of sugarcane genotypes cultivated under water deficit conditions imposed during the initial growth phase. Experiments were performed in a greenhouse using two sugarcane genotypes namely: HoCP93-776 (drought susceptible) and TCP02-4587 (drought tolerant).
Braz. arch. biol. technol.. Publicado em: 2013-10
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10. Parasitoids of the endangered leafcutter ant Atta robusta Borgmeier in urban and natural areas
Parasitoids of the endangered leafcutter ant Atta robusta Borgmeier in urban and natural areas. Hosts of parasitoids in urban areas may suffer from a double threat of habitat destruction by urbanization and parasitism pressure. Moreover, the parasitoids themselves might be at risk if they are specialists. Here, we studied whether Atta robusta (Hymenoptera, F
Rev. Bras. entomol.. Publicado em: 2013-09
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11. Automatização de um pulverizador hidropneumático visando o controle do espectro de gotas em função do déficit de pressão de vapor dágua do ar / Automation of a hydro-pneumatic sprayer for controlling droplet spectrum in function of deficit of water vapor pressure in the air
Pesticide spraying is one of the most repeated operations in farms, this has occurred mainly due to adoption of no tillage. Facility for purchasing pesticides is notorious throughout Brazil. However, technology for its application has been difficult to reach the producers, even in regions with high agricultural potential. This work aimed to develop a system
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/04/2012
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12. Postharvest porometer to study transpiration and to measure vapor pressure deficit.
O pôrometro de pós-colheita é um instrumento para medir transpiração, resistência difusiva e déficit de pressão de vapor por manometria a volume constante e por volumetria a pressão constante. É constituído de uma câmara de transpiração com fechamento hermético contendo um suporte de amostras sobre um ventilador e externamente um manômetro de
Brasília. Publicado em: 2011