نتایج جستجو برای: 8 cm height of crown buds

تعداد نتایج: 21267114  

Journal: : 2022

The research aims to determine the morphogenetic variations of seedling characters in populations representing vertical distribution area Scotch pine Turkey and reveal within among population areas. In study, seedlings (three, four five-year-old) grown from seeds collected five altitudinal zones up 2250 m sea level natural Trabzon region were used. Seedling length, root collar diameter, number ...

Journal: :International Journal of Plant and Soil Science 2022

The present investigation entitled, “Varietal evaluation of Asiatic Lily (Lilium asiaticum) under Prayagraj shade net condition” was taken in the Department Horticulture, Naini Agricultural Institute, Sam Higginbottom University Agriculture, Technology and Sciences, Prayagraj, (Allahabad). During Rabi season (2021-2022). experiment layout Randomized block design (RBD) with 07 varieties, replica...

There is less published research on ecosystems of forested rangeland in Iran. This research was conducted to investigate the forested rangeland area based on legal definition via comparison of indices species richness, diversity, and morphology of the trees and shrubs in Sabzkouh watershed, Chaharmahal Bakhtiari province, Iran. Quantitative characteristics of trees and shrubs were measured by 5...

A Afroonde B Kiani P Attarod

Due to the importance of Acer monspessulanum in Iranian mountain forests, a study was carried out to reliably estimate its woody biomass and growing volume via allometric equations. Four transects, five trees in each were chosen randomly. The characteristics of standing trees including: diameter at root collar, height, number of stems and crown width were measured, then trees were finally cut d...

2013
Carmen Feller Jan Graefe Matthias Fink

Objectives of our study were to quantify the effects of apical dominance and bud cluster activity on asparagus yield patterns and to collect data for process-oriented modeling of the asparagus crop. Plants were grown in 40 L containers. After four years the soil above the asparagus crowns was removed and the containers were placed in a growth chamber at 20 ̊C for three months. During this time, ...

2008
Don C. Bragg

Virtually all techniques for tree height determination follow one of two principles: similar triangles or the tangent method. Most people apply the latter approach, which uses the tangents of the angles to the top and bottom and a true horizontal distance to the subject tree. However, few adjust this method for ground slope, tree lean, crown shape, and crown configuration, making errors commonp...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده منابع طبیعی 1391

in this study, the effects of oleothermal modification on physical and mechanical peroperties of fir wood (abeis sp.) blocks were examined. at first, some blocks of fir wood with 5 × 20 × 120 cm dimensions were prepared. the blocks were treated in soybean oil. the effects of 3 factors such as treatments temperature (180and 200 °c), holding time (12 and 15 h) and initial moisture content of wood...

Importance of probability distribution functions in natural resource studies is increasing due to their effective roles in better understanding of vegetation structure and providing conceptual models of quantitative indices of plant species. The present study was performed to model the distribution of height and canopy area of Cionura erecta L. shrub, using probability distribution functions in...

      Taxus baccata L. is a native and ancient tree species growing the Hyrcanian forests that have been considered in recent years because of being in the red lists of threated species. The aim of this research was to provide quantitative characteristics of forest stand structure using a set of indicators in the natural habitat of this species. Three one-hectare sampling area were selected to ...

2012
Istabrak Hasan Matthias Frentzen Karl-Heinz Utz Daniel Hoyer Alexander Langenbach Christoph Bourauel

This study aimed to evaluate the biomechanical behaviour of adhesive endo-crowns and the influence of their design on the restoration prognosis when four loading positions are applied from the restoration-tooth junction. Two three-dimensional finite element models for the lower first molar were developed: endo-crown as a monobloc and endo-crown of a primary abutment and a full crown. Four crown...

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