نتایج جستجو برای: phenological growth stage
تعداد نتایج: 1142508 فیلتر نتایج به سال:
Hedysarum flexuosum L. is an important forage legume with high nutritive value. The determination of forage production in natural habitats is the most important factor for grazing management. Studies on its habitat characteristics and distribution are scarce. This research was conducted in order to evaluate the extent of pheno-morphological diversity in natural populations of Hedys...
Understanding and interpreting the temporal variations of the vegetation growth can provide valuable information on its dynamics and in case of crops provide an estimate of the phenological milestones that can help describe the crop. The focus of this work is to use the phenological parameters derived from MODIS EVI time series composite data to map the variability in cropping practices. These ...
The Haun, Feekes, and Zadoks-ChanpKonzak developmental stage scales are often used to report phenological information for wheat (Triticum aestivum L.) development. Agronomists familiar with one of these scales may have only a passing acquaintance with developmental scales other than the one they consider most appropriate for their purposes. This makes review and interpretation of the literature...
The timing of the fruit-set stage (i.e., start and end of fruit set) is crucial in a plant's life cycle, but its response to temperature change is still unclear. We investigated the timing of seven phenological events, including fruit-set dates during 3 yr for six alpine plants transplanted to warmer (approximately +3.5°C in soils) and cooler (approximately -3.5°C in soils) locations along an a...
Range species forages have different quality and feeding value in different site and times. Therefore research carried out to Investigate of Plantago Coronopus Forage Quality at different phenological Growth Stages in Five Habitats of Golestan Province (Goomishan, soofikam, Sangar Tappeh, Inchehbroon and chaparghoymeh). Samples were collected from two phonological stages (vegetative and seed r...
Rosemary (Rosmarinus officinalis L.) is an important medicinal plant that contained a wide range of secondary metabolites such as rosmarinic acid. In this study, essential oil content and composition and rosmarinc acid were determined at three phenological stages (before flowering, full flowering and fruit set stages). Hydro distillation method was used for essential oil extraction and GC and ...
Agriculture in the context of climate arrives at a favorable outcome. One of the important goals in agricultural researches is the investigation of effects of atmospheric parameter on various agricultural products. In this research we study the thermal and phenological conditions of grape cultivation in Hamadan province. In this study we analyzed thermal conditions for grape based on minimum an...
The present study aims to investigate the structure and trend of climate parameters affecting grape growth in Khorasan Razavi (north eastern Iran) in the period of 1991-2015 in 8 weather stations. Effective climate elements such as temperature, precipitation, the number of hot days, the number of frost days, sunshine hours and parameters such as maximum temperature, annualaverageannual average ...
Plant architecture is commonly defined by the adjacency of organs within the structure and their properties. Few studies consider the effect of endogenous temporal factors, namely phenological factors, on the establishment of plant architecture. This study hypothesized that, in addition to the effect of environmental factors, the observed plant architecture results from both endogenous structur...
Phenology can directly reflect the characteristics of rubber seedling, people determine agricultural time arrangements seedling germination, cut back, tending management and nursery operation. In this study, phenological period top leaf hevea tree seedlings was divided into four treatments, back carried out in sprout period, bronze stage, light green stage stable respectively. The effects sawin...
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