Leaf lifespan varies widely among plant species, from a few weeks to >40 years. This variation is associated with differences in plant form and function, and the distribution of species along resource gradients. Longer leaf lifespans increase the residence time of nutrients and are one mechanism by which plants conserve nutrients; consequently, leaf lifespan should increase within species with ...

Plants of nutrient-poor, arid environments often have leaf traits that include small size, sclerophylly, long life span, low nutrient concentration, and low photosynthetic rate. Hence, the success of two large-leaved palmettos in peninsular Florida's seasonally xeric, nutrient-impoverished uplands seems anomalous, given that their leaves are orders of magnitude larger than the leaves of sympatr...

The health benefits of green and black tea are mainly associated with their antioxidant potential and phenolic compounds. The present study aimed to evaluate the effects of dried rose petals (Rosa damascena) on the antioxidant capacity of green and black tea. Antioxidant capacities of tea and rose infusions were assessed using 2, 2-diphenyl-1-picrylhydrazyl (DPPH) and 2, 2-azinobis-3-<...

climatic conditions of guilan have caused to develope azolla growth in wetland and ponds. regarding environmental problems of azolla accumulation, a study was conducted to investigate impact of composted azolla with nutrient solution on the growth of dracaena in replacement of peat in ornamental plants and flower research station, lahijan, iran. the control treatment was a 2:1 ration of peat: p...

Attempts to restore degraded highlands by tree planting are common in East Africa. However, up till now, little attention has been given effects of species choice on litter decomposition and nutrient recycling. In this study, three indigenous two exotic were selected for a study. The objective was identify optimal combinations diversity levels the restoration land via enhanced turnover. Litterb...

The study attempted to analyse the effects of age, pruning, and fertilizer application on tea yield and to derive a relation between yield and tea leaf area index (LAI). The study was motivated by the fact that tea yield has stagnated in Northeast India. To study the effects of age, pruning, and fertilizer application on tea yield, statistical analysis was applied to the data set collected at t...

backgrounds and objective: kombucha is a several thousand years old traditional fermented beverage originated from east. while black tea infusion is the common substrate for preparing kombucha, other herbal infusions can be applied for this reason too. common medicinal herbs or even waste herbal materials, like banana peel, could be suitable substrates for preparing kombucha analogues. in this ...

The cerrado's flora comprises aluminum-(Al) accumulating and non-accumulating plants, which coexist on acidic and Al-rich soils with low fertility. Despite their existence, the ecological importance or biological strategies of these functional groups have been little explored. We evaluated the leaf flushing patterns of both groups throughout a year; leaf concentrations of N, P, K, Ca, Mg, S, Al...