Results 11 to 20 of about 2,197,327 (302)
Presenting an empirical model for determining the sugar beet evapotranspiration by GDD parameter (Case study: Torbat-Jam, Iran) [PDF]
So far, various methods have been presented for determining reference crop evapotranspiration in different parts of the world. The most popular and prestigious of them are probably the combined methods of Penman family, modified Blany-Criddle, Hargreaves
Fateme Jan Nesar +3 more
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New-found interest in sweetpotato production in the Mid-Atlantic and Northeastern U.S. has been steadily increasing in the last several years. Sweetpotatoes are usually grown for fresh market use and novel marketing strategies and new consumer niches are
Luis O. Duque +3 more
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Climate classifications supply climate visualization with inference about general vegetation types. The Köppen classification system of thermal classes and an arid class is widely used, but options are available to strengthen climate change detection ...
Brice B. Hanberry
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Intra-specific Variations among Different Canada Thistle (Cirsium arvense L.) Ecotypes [PDF]
Introduction: Canada thistle (Cirsium arvense L.( occurs in pastures and wheat fields and is common in most provinces, where it is considered a major agricultural weed in Iran.
M. Diayanat
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El Niño and La Niña Southern Oscillation (ENSO) are major drivers that affect climatic variables in many countries. Therefore, ENSO mediated variation in climatic factors have significant consequences for crop production.
Md. Abdus Sattar +4 more
doaj +1 more source
A new nonlinear method for calculating growing degree days [PDF]
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, Guanglin, Wang, Quanjiu
openaire +2 more sources
Seasonal changes in dry matter yield from Karst pastures as influenced by morphoclimatic features [PDF]
Pastures are strongly affected by local environmental variables in terms of their species richness, plant composition and herbage production. A multi-site monitoring study was conducted over three years to investigate the influence of morphoclimatic ...
Fazzini, Massimiliano +5 more
core +4 more sources
Growth and phenology of three Andean potato varieties (Solanum tuberosum L.) under water stress
The water-deficit stress has a negative effect on the growth and development of plants, reducing the yield of crops. This study evaluated the effect of a water deficit on the growth and phenology of potato (Solanum tuberosum L.) varieties Diacol Capiro ...
Loyla Rodríguez P. +3 more
doaj +1 more source
Phenology and morphology of the invasive legume Lupinus polyphyllus along a latitudinal gradient in Europe [PDF]
Plant phenology, i. e. the timing of life cycle events, is related to individual fitness and species distribution ranges. Temperature is one of the most important drivers of plant phenology together with day length.
Kristin Ludewig +29 more
doaj +3 more sources
Degree-Days: Growing, Heating, and Cooling
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, growers use a concept called growing degree-days (GDD), sometimes called heat units.
Silvana V. Paula-Moraes +1 more
openaire +5 more sources

