Results 211 to 220 of about 233,577 (260)
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1999
Publisher Summary This chapter reviews the various aspects of radiation use efficiency (RUE). Topics that are covered include theoretical analyses, experimental determination and measures, and sources of variability. Crop growth rate (dm/dt) could be readily estimated from successive harvests through the growing season.
Thomas R. Sinclair, Russell C. Muchow
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Publisher Summary This chapter reviews the various aspects of radiation use efficiency (RUE). Topics that are covered include theoretical analyses, experimental determination and measures, and sources of variability. Crop growth rate (dm/dt) could be readily estimated from successive harvests through the growing season.
Thomas R. Sinclair, Russell C. Muchow
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Effect of Maize Maturity on Radiation‐Use Efficiency
Agronomy Journal, 1991AbstractMaize (Zea mays L.) production has expanded into short‐season regions but it is not known whether the radiation‐use efficiency (RUE, g MJ−1)1 of new early hybrids differs from those grown in traditional maize‐growing regions. In this study, spectral reflectance measurements were used to derive estimates of photosynthetically active radiation ...
D. J. Major +2 more
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Temperature affects radiation use efficiency in maize
Field Crops Research, 1993Abstract The objective of this work was to study, under field conditions, the effect of temperature on radiation use efficiency (RUE) of maize. Field evidence of the negative effect of low temperature on this variable is lacking. Experiments with different sowing dates and five years of experimentation with October plantings provided a range of ...
F.H. Andrade, S.A. Uhart, A. Cirilo
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Radiation Use Efficiency among Cotton Cultivars
Agronomy Journal, 1991AbstractCotton (Gossypium hirsutum L.) cultivars have diverse growth rates and fruiting characteristics that may be due to differences in radiation use efficiency. Potential growth rates were measured to see if differences could be attributed to radiation use efficiency or canopy light transmission coefficients.
W. D. Rosenthal, T. J. Gerik
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Variation in Crop Radiation‐Use Efficiency with Increased Diffuse Radiation
Crop Science, 1992Radiation‐use efficiency (RUE; grams of biomass accumulated, divided by total solar radiation intercepted) has proven to be a useful variable for quantifying biomass accumulation by crops. Experimental results and theoretical analysis indicate that differences in RUE exist among species, but that RUE for unstressed conditions is relatively stable ...
Sinclair, Thomas R. +2 more
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Effect of Radiation Environment on Radiation Use Efficiency and Growth of Sunflower
Crop Science, 1997The level of incident radiation and the proportion of radiation that is diffuse affects radiation use efficiency (RUE) in crops. However, the degree of this effect, and its importance to growth and yield of sunflower (Helianthus annuus L.) have not been established. A field experiment was conducted to investigate the effects of radiation environment on
Bange, M.P. +2 more
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Seasonal variation in radiation use efficiency of irrigated rice
Agricultural and Forest Meteorology, 2001Abstract Radiation use efficiency (RUE), the amount of carbon assimilated per unit intercepted photosynthetic photon flux density (Qi), is important in understanding and modeling the relationship between plant growth and the physical environment. Field experiments were conducted in 1998 and 1999 to evaluate RUE as a function of growth and development
Colin S Campbell +6 more
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Radiation Use Efficiency of an Old and a New Maize Hybrid
Agronomy Journal, 1992AbstractDifferences in dry matter accumulation among crop cultivars can be attributed to differences in either the absorptance of incident photosynthetically active radiation (PAR) and/or the conversion of absorbed PAR into dry matter. This study was conducted to quantify the contribution of radiation use efficiency (RUE, g dry matter MJ−1) to the ...
M. Tollenaar, A. Aguilera
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Estimating theoretical radiation‐use efficiency for kale crops
Grass and Forage Science, 2013AbstractEstablishing the radiation‐use efficiency (RUE) of forage brassica crops will aid our understanding of their photosynthetic performance. The concept of RUE has been developed for cereals and legumes, but there is limited information for forage brassica crops.
E. Chakwizira +3 more
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Distribution of nitrogen and radiation use efficiency in peanut canopies
Australian Journal of Agricultural Research, 1994The allocation pattern of leaf nitrogen throughout a crop canopy can theoretically affect crop photosynthetic performance and radiation use efficiency (RUE). No information is available on the existence of leaf nitrogen gradients in peanut (Arachis hypogaea L.) canopies, nor on how these gradients might impact on RUE. Peanut crops (cv.
GC Wright, GL Hammer
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