Results 271 to 280 of about 154,725 (310)

Limited-transpiration response to high vapor pressure deficit in crop species

Plant Science, 2017
Water deficit under nearly all field conditions is the major constraint on plant yields. Other than empirical observations, very little progress has been made in developing crop plants in which specific physiological traits for drought are expressed. As a consequence, there was little known about under what conditions and to what extent drought impacts
Sinclair, T R, Devi, J, Shekoofa, A, Choudhary, S, Sadok, W, Vadez, V, Riar, M, Rufty, T   +7 more
openaire   +3 more sources

EFFECT OF VAPOR PRESSURE DEFICIT ON SPINACH GROWTH UNDER HYPOBARIC CONDITIONS

Acta Horticulturae, 1996
The effect of vapor pressure deficit (VPD) of air during photoperiod on spinach growth under low total pressure was examined. Spinach plants grown under atmospheric pressure were transplanted into a pressure-reduced growth chamber and cultured hydroponically for eight days.
K, Iwabuchi, G, Saito, E, Goto, T, Takakura   +3 more
openaire   +2 more sources

Vegetational Correlations with Vapor Pressure Deficit and Relative Humidity

American Midland Naturalist, 1942
Ecologists have long attempted to single out critical environmental factors for use in distributional, successional, and other ecological studies. Temperature and relative humidity have been foremost in consideration. In recent years the importance of relative humidity, and even of temperature, has been minimized.
openaire   +1 more source

Downscaling Vapor Pressure Deficit across Complex Forested Terrain

Journal of Applied Meteorology and Climatology
Abstract The forest microclimate shapes many aspects of forest functioning, including plant regeneration and wildfire occurrence. In complex landscapes with varying terrain, the forest microclimate varies at fine spatial scales (10–100 m2). However, accurately mapping this variation remains challenging.
Jamie E. Burton, Bianca J. Pickering, Trent D. Penman, Jane G. Cawson   +3 more
openaire   +1 more source

Comparison of Vapor-Pressure-Deficit Calculation Methods—Southern High Plains

Journal of Irrigation and Drainage Engineering, 1995
Vapor-pressure deficit ( VPD ) affects evapotranspiration, water-use efficiency, and radiation-use efficiency of crops. VPD calculation methods were evaluated for a semiarid environment in the Southern Great Plains. Air temperature and relative humidity were measured near Bushland, Texas, during 1992 and 1993.
Terry A. Howell, Donald A. Dusek
openaire   +1 more source

Limited-Transpiration Rate Under Elevated Atmospheric Vapor Pressure Deficit

2017
The driving force of transpiration rate is the gradient in vapor pressure between the dry atmosphere and the wet interior of leaves, commonly referred to as the vapor pressure deficit (VPD). The other key variable is the resistance to vapor diffusion from the leaves attributed to the aperture of the stomata pores. Partial stomatal closure at modest VPD
openaire   +1 more source

The functional dependence of canopy conductance on water vapor pressure deficit revisited

International Journal of Biometeorology, 2018
Current research seeking to relate between ambient water vapor deficit (D) and foliage conductance (gF) derives a canopy conductance (gW) from measured transpiration by inverting the coupled transpiration model to yield gW = m - n ln(D) where m and n are fitting parameters. In contrast, this paper demonstrates that the relation between coupled gW and D
Fuchs, Marcel, Stanghellini, Cecilia
openaire   +2 more sources

Atmospheric Pressure Effect on Vapor Pressure Deficit and Potential Moisture Loss from Horticultural Commodities

Transactions of the ASAE, 1981
ABSTRACT AN analytical investigation of the effect of atmos-pheric pressure level on air-water psyohrometric re-lationships is reported. Vapor pressure deficit (VPD) is shown to be essentially independent of atmospheric pressure level in the range of atmospheric pressures nor-mally encountered in postharvest handling of horticul-tural commodities ...
null Lee R. Erickson, null Roger E Garrett   +1 more
openaire   +1 more source

Effects of soil moisture and vapor pressure deficit on canopy transpiration for two coniferous forests in the Loess Plateau of China

Agricultural and Forest Meteorology, 2023
Shengnan Chen, Wei Wei, B. Tong, Liding Chen   +3 more
semanticscholar   +1 more source

What determines the time lags of sap flux with solar radiation and vapor pressure deficit?

Agricultural and Forest Meteorology, 2023
Liuliu Wan, Quan Zhang, Lei Cheng, Yujie Liu, S. Qin, Jijun Xu, Yongqiang Wang   +6 more
semanticscholar   +1 more source