Results 31 to 40 of about 233,577 (260)

A Review of Modeled Water Use Efficiency of Highly Productive Perennial Grasses Useful for Bioenergy

open access: yesAgronomy, 2020
Whole plant productivity is obviously the ultimate product of leaf photosynthesis and this has led to numerous efforts to relate the two. However, often with perennial grasses, plant productivity is more sink-limited than source-limited, causing the ...
James R. Kiniry, Sumin Kim
doaj   +1 more source

Intercepted Photosynthetically Active Radiation (PAR) and Spatial and Temporal Distribution of Transmitted PAR under High-Density and Super High-Density Olive Orchards

open access: yesAgriculture, 2021
We quantified the photosynthetically active radiation (PAR) interception in a high-density (HD) and a super high-density (SHD) or hedgerow olive system, by measuring the PAR transmitted under the canopy along transects at increasing distance from the ...
Adolfo Rosati   +4 more
doaj   +1 more source

Water and radiation use efficiency in different developmental stages in four bread wheat cultivars under moisture stress conditions [PDF]

open access: yesDesert, 2007
This research was conducted in Toroq Experimental field station, Mashhad, Iran, for two successive cropping seasons (2000-2002), using split plot experimental design based on complete randomized blocks with three replications. Moisture stress treatments (
M. Ghodsi   +3 more
doaj   +1 more source

Diurnal and Seasonal Variations of Photosynthetic Energy Conversion Efficiency of Field Grown Wheat

open access: yesFrontiers in Plant Science, 2022
Improving canopy photosynthetic light use efficiency and energy conversion efficiency (εc) is a major option to increase crop yield potential. However, so far, the diurnal and seasonal variations of canopy light use efficiency (LUE) and εc are largely ...
Qingfeng Song   +7 more
doaj   +1 more source

Water Use Efficiency of Acacia seyal (Del.) in extreme arid environment prevails in South-Western Desert, Egypt [PDF]

open access: yesAswan University Journal of Environmental Studies, 2020
The present investigation involves the studies of water use efficiency of Acacia seyal (Del.) seedlings under extreme arid conditions. Experiments were performed in a hyper arid environment to study the effects of drought stress using different water ...
Usama A.A Radwan   +2 more
doaj   +1 more source

Radiation Use Efficiency of Cotton in Contrasting Environments

open access: yesAmerican Journal of Plant Sciences, 2012
Crop growth and yield varies among locations due to differences in environmental parameters, such as temperature, relative humidity, solar radiation and vapor pressure deficit. Previous research has shown that increasing vapor pressure deficit has a negative effect on radiation use efficiency of many crops.
Evangelos D. Gonias   +3 more
openaire   +2 more sources

Productivity and radiation use efficiency of tea grown under different shade trees in the plain land of West Bengal

open access: yesJournal of Agrometeorology, 2008
Tea is grown under shade trees at higher elevation to attain better quality and higher productivity of the leaf. Hence, a field study was carried out to study the influence the shade trees on productivity and radiation use efficiency of the tea, when ...
ASIS MUKHERJEE   +2 more
doaj   +1 more source

Evaluation Nitrogen and Radiation Use Efficiency of Wheat (Triticum aestivum) under Irrigation Levels [PDF]

open access: yesIkufīziyuluzhī-i Giyāhān-i Zirā̒ī, 2014
Water and nitrogen are among the most important limiting factors controlling yield in crops. With due attention to importance this subject, in wheat a split plot experiment was carried out in the field, using randomized complete block design with three ...
A. Ghanbari   +3 more
doaj  

Impacts of tillage systems, nitrogen fertilizer rates and a legume green manure on light interception and yield of winter wheat

open access: yesCogent Food & Agriculture, 2019
Combining conservation tillage with legumes grown as a green manure is an increasingly popular practice for crop production in the U.S. Southern Great Plains. This study investigated interactions between system of tillage (no-till vs.
Tanka P. Kandel   +3 more
doaj   +1 more source

The importance of radiation for semiempirical water-use efficiency models [PDF]

open access: yesBiogeosciences, 2017
Water-use efficiency (WUE) is a fundamental property for the coupling of carbon and water cycles in plants and ecosystems. Existing model formulations predicting this variable differ in the type of response of WUE to the atmospheric vapor pressure ...
S. Boese   +3 more
doaj   +1 more source

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