In order to improve the quality of cut rose ‘Dolce Vita’, an investigation was performed with 20 treatments, 3 replications, and 2 plants in each replicate in a greenhouse with the open soilless culture system. The treatments included control (distilled water), putrescine (Put) at the rates of 1, 2 or 3 mM, spermidine (Spd) at the rates of 0.5, 1 or 1.5 mM, spermine (Spm) at the rates of 1, 2 o...

Abstract Key message A lack of snow cover and increased soil freezing may not only have short-term impacts on trees but longer-lasting lagged effects radial growth. Soil temperature frost intensity are affected by the depth insulating timing snowmelt which predicted to change climate warming. This increase tree growth if there is less or decrease no cover, temperatures still exist. Previously, ...

The branch autonomy principle, which states that the growth of individual branches can be predicted from their morphology and position in the forest canopy irrespective of the characteristics of the tree, has been used to simplify models of branch growth in trees. However, observed changes in allocation priority within trees towards branches growing in light-favoured conditions, referred to as ...

to study the effect of different substrates on growth and yield of gerbera, this experiment was carried out as randomized completely block design with 14 treatments and 3 replications. treatments were as fallowing: fine sand, peat+fine sand (25%+75%), peat+fine sand (50%+50%), perlite+peat (75%+25%), perlite+peat (50%+50%), perlite+peat (25% +75%), perlite+peat+expanded clay (25%+70%+5%), perli...

kochia is a halophyte plant and is a good source of forage for livestock under saline irrigation. in order to investigate the salinity effect on morphological and forage characteristics of kochia, an experiment was conducted. three saline waters (5.2, 10.5 and 23.1 ds m-1) and three kochia ecotypes (birjand, borujerd and sabzevar) were allocated as main and sub plots, respectively, in a split p...

The agronomic management of pitahaya can enhance its yield. Thus, the use Ascophyllumnodosum contributes to plantdevelopment. objective was evaluate effect Ascophyllumnodosumon height, stem diameter, length, shoot diameterand heat accumulation. Two varieties were used: Hylocereusmonacanthus(Lem.) Britton & Rose, Hylocereusocamponis (Salm)Britton Rose and three doses (0, 1.0 2.0 L ha-1), thu...

Winter ice storms frequently occur in the southeastern United States and can severely damage softwood plantations. In January 2004, a severe storm deposited approximately 2 cm of ice on an intensively managed 4-year-old loblolly pine (Pinus taeda L.) plantation in South Carolina. Existing irrigation and fertilization treatments presented an opportunity to examine the effects of resource amendme...

Tree stem diameter variations were measured simultaneously in beech (Fagus sylvatica L.) in Sorø, Denmark and in Scots pine (Pinus sylvestris L.) in Hyytiälä, Finland. The variations were detected at two heights on the xylem and the whole stem on both trees. The evapo-transpiration of the forests was measured by eddy-covariance method. The pattern of evapo-transpiration was refl ected on the di...

Allometric models to estimate biomass components such as stem mass Ms, foliage mass Ml, root mass Mr and aboveground mass Ma, were developed for the palm species Euterpe precatoria Mart., which is the most abundant tree species in the Amazon. We harvested twenty palms including aboveand below-ground parts in an old growth Amazonian forest in Brazil. The diameter at breast height D ranged from 3...

This research investigated the longevity of functional connections between leaf traces and stem xylem in 16 species of conifers to better understand the spatial use of sapwood for water transport. The first question was which ring(s) stained when a vacuum was applied to the distal end of the cut surface of a needle attached to a short stem segment. The vacuum was applied to either 1- or 2-yr-ol...