نتایج جستجو برای: lack of optimal growing degree days gdd
تعداد نتایج: 21209518 فیلتر نتایج به سال:
A forward estimate of mango (Mangifera indica L.) harvest timing is required for farm management (e.g., organization labour and marketing). This can be based on accumulated growing degree days (GDD) from an early stage flowering to fruit maturity, with maturity judged a destructive assessment flesh colour dry matter content. The current study was undertaken improve GDD targets Australian cultiv...
one of the major issues of increasing agricultural production, is adaptation of technology to specific climatic variables in cultivated areas. knowing the weather and climatic condition and periodic yearly and multi-year changes of meteorological phenomena and deviations from normal values are of major requirements of modern agriculture. in this study, daily, monthly and annual weather data o...
Abstract Two species of cleavers, Galium aparine L. and spurium L., are known to inhabit croplands in western Canada. The latter is the more abundant two species. An increased abundance these over most recent decades warrants a comprehensive understanding their developmental phenology cause this increase. This study aimed identify base temperature emergence characteristics spp. across different...
abstract: in this thesis, we focus to class of convex optimization problem whose objective function is given as a linear function and a convex function of a linear transformation of the decision variables and whose feasible region is a polytope. we show that there exists an optimal solution to this class of problems on a face of the constraint polytope of feasible region. based on this, we dev...
The purpose of this study is predicting climate changes and investigating the effect of probable climate change on the growing degree-days in the northwest of Iran. For this purpose the climatic data of seven synoptic stations during a 25 years period (1985-2009) was collected including Oroomieh, Tabriz, Zanjan, Sanandaj, Ghazvin, Kermanshah, and Hamedan were used as the base period and thus te...
poa genus has a high value for grazing and forage conservation concerning thelivestock. in order to study the impacts of cold temperature and growing degree days(gdd) on seedling morphological trait and phonological development of two speciesinvolving poa pratensis and poa trivialis, this research was conducted in laboratory andgreenhouse and outdoor of research institute of forest and rangelan...
Unfavorable weather conditions and lack of appropriate farm machinery often delay N application. This results in nitrogen (N) deficiency during the vegetative early reproductive growth stages winter wheat. The objective this study was to evaluate impact application timings (from tillering flag leaf stages) on wheat grain yield protein. conducted across 12 site–years Oklahoma, US. treatments inc...
Larvae of the whitemarked tussock moth, Orgyia leucostigma (J.E. Smith) (Lepidoptera: Lymantriidae), defoliate and contaminate blueberries, Vaccinium corymbosum L., in eastern North America, but infestations are often not detected until economic damage has been caused. To improve monitoring techniques and understand the phenology of the whitemarked tussock moth in blueberry, we compared four tr...
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