Results 1 to 10 of about 311,005 (248)
Frost Damage Index: The Antipode of Growing Degree Days [PDF]
Plant Phenomics, 2023 Abiotic stresses such as heat and frost limit plant growth and productivity. Image-based field phenotyping methods allow quantifying not only plant growth but also plant senescence.
Flavian Tschurr +6 more
doaj +6 more sources
Projecting Future Change in Growing Degree Days for Winter Wheat [PDF]
Agriculture, 2016 Southwest Oklahoma is one of the most productive regions in the Great Plains (USA) where winter wheat is produced. To assess the effect of climate change on the growing degree days (GDD) available for winter wheat production, we selected from the CMIP5 ...
Natalie Ruiz Castillo +1 more
doaj +4 more sources
Degree Days: Heating, Cooling, and Growing
EDIS, 2007 ABE-381, a 7-page illustrated fact sheet by Clyde W. Fraisse, John Bellow, and Charles Brown, discusses how growers can use the AgClimate Web site to find out how to predict Growing Degree Day accumulation for the current season, and to review GDD for ...
Clyde W. Fraisse +2 more
doaj +8 more sources
Degree-Days: Growing, Heating, and Cooling
EDIS, 2018 How much and when it rains, freezes, and thaws can make the difference between boom and bust for a year's crop. However, temperature can predict more than boom or bust. Atmospheric temperature can predict the growth rates of many plants. For this reason,
Clyde W. Fraisse +1 more
doaj +7 more sources
A new nonlinear method for calculating growing degree days. [PDF]
Sci Rep, 2018 AbstractPrecise calculations of growing degree days (GDD) are an important component in crop simulation models and managerial decisions. Traditional methods for calculating GDD assume linear developmental responses to temperature and cannot precisely account for the delay in growth or development at temperatures above the optimal temperature (Topt).
Zhou G, Wang Q.
europepmc +4 more sources
Cover crop mixture expression is influenced by nitrogen availability and growing degree days. [PDF]
PLoS One, 2020 Cover crop mixtures can provide multiple ecosystem services but provisioning of these services is contingent upon the expression of component species in the mixture. From the same seed mixture, cover crop mixture expression varied greatly across farms and we hypothesized that this variation was correlated with soil inorganic nitrogen (N) concentrations
Baraibar B +6 more
europepmc +6 more sources
PHENOLOGICAL STAGES AND GROWING DEGREE DAYS FOR DIFFERENT SOYBEAN CULTIVARS [PDF]
Journal of Plant Production, 2009 Ninesoybean cultivars belonging to different maturity groups (MG) in the green house of Crop Physiol. Res. Dept., Giza, 2007 and 2008 seasons. The main objectives were to study the initiation and duration of the different growth stages, growing degree ...
M. H. Abdel-Gawad +2 more
doaj +2 more sources
Variability of growing degree days in Poland in response to ongoing climate changes in Europe. [PDF]
Int J Biometeorol, 2017 An observed increase in air temperature can lead to significant changes in the phenology of plants and, consequently, changes in agricultural production. The aim of the study was to evaluate the spatial differentiation of thermal resources in Poland and their variability during a period of changing thermal conditions in Europe. Since the variability of
Wypych A +3 more
europepmc +5 more sources
Growing degree-days: one equation, two interpretations
Agricultural and Forest Meteorology, 1997 Heat units, expressed in growing degree-days (GDD), are frequently used to describe the timing of biological processes. The basic equation used is GDD = [(TMAX + TMIN)2]−TBASE, where TMAX and TMIN are daily maximum and minimum air temperature, respectively, and TBASE is the base temperature. Two methods of interpreting this equation for calculating GDD
Gregory S Mcmaster
exaly +3 more sources
Spatial-Temporal Simulation of LAI on Basis of Rainfall and Growing Degree Days [PDF]
Remote Sensing, 2017 The dimensionless Leaf Area Index (LAI) is widely used to characterize vegetation cover. With recent remote sensing developments LAI is available for large areas, although not continuous. However, in practice, continuous spatial-temporal LAI datasets are required for many environmental models.
Hoda Ghasemieh +2 more
exaly +4 more sources