duction, and therefore represents one of the most important beverages in the world. Additionally, black tea is rich in polyphenols compared to other beverages, and the various health benefits associated with its consumption, including antioxidative, anticancer and anti-inflammatory activity, have recently been investigated. Black tea is produced by crushing the fresh leaves of Camellia sinensis...

Seedlings of Theobroma cacao CCN 51 genotype were grown under greenhouse conditions and exposed to increasing concentrations of Cu (0.005, 1, 2, 4, 8, 16, and 32 mg Cu L(-1)) in nutrient solution. When doses were equal or higher than 8 mg Cu L(-1), after 24 h of treatment application, leaf gas exchange was highly affected and changes in chloroplasts thylakoids of leaf mesophyll cells and plasmo...

The principal pigments present in black tea, theaflavins (TF), have been indicated to be of potential clinical significance in various fields of research which has been hampered by the very low levels of TFs from black tea extractions, being the original method employed to acquire TFs. Forelle pear (44μM TF/g dry weight/h) and Yacon leaf (65μM TF/g dry weight/h) homogenates were tested for thei...

As one of the main lepidopteran pests in Chinese tea plantations, Ectropisobliqua Warren (tea geometrids) can severely decrease yields of tea products. The olfactory system of the adult tea geometrid plays a significant role in seeking behaviors, influencing their search for food, mating partners, and even spawning grounds. In this study, a general odorant-binding protein (OBP) gene, EoblGOBP2,...

plants absorb nutrients needed for plant type, growing season, depending on soil and yield. absorb of nutrient 30-90 percent depends management practices in the use of fertilizer. can be used fertilizers in most cases soil and for foliar feeding can be quickly absorbed into the plant at the proper levels of nutrition in cucumber. in this experiment, was used a split plot in a randomized complet...

Within the last two decades, a series of papers have dealt with the effects of nutrition and nutrient deficiency, as well as salt stress, on the long-distance transport and partitioning of nutrients in castor bean. Flows in xylem and phloem were modelled according to an empirically-based modelling technique that permits additional quantification of the uptake and incorporation into plant organs...

Photosynthesis rates and photosynthesis-leaf nutrient relationships were analysed in nine tropical grass and sedge species growing in three different ecosystems: a rain-fed grassland, a seasonal floodplain, and a permanent swamp, located along a hydrological gradient in the Okavango Delta, Botswana. These investigations were conducted during the rainy season, at a time of the year when differen...

In desert ecosystems, plant growth and nutrient uptake are restricted by availability of soil nitrogen (N) and phosphorus (P). The effects of both climate and soil nutrient conditions on N and P concentrations among desert plant life forms (annual, perennial and shrub) remain unclear. We assessed leaf N and P levels of 54 desert plants and measured the corresponding soil N and P in shallow (0-1...

Abstract Nutrient assessment of plants, a key aspect agricultural crop management and varietal development programs, traditionally is time demanding labor-intensive. This study proposes novel methodology to determine leaf nutrient concentrations citrus trees by using unmanned aerial vehicle (UAV) multispectral imagery artificial intelligence (AI). The was conducted in four different field trial...