Termination of vase life for cut flowers is characterized by wilting associated with an imbalance developing between water uptake through xylem conduits in stems and water loss through stomata and other structures on leaves and other organs. To
For desert succulents, and for several other plant species, older roots play a more active role in water uptake than is generally acknowledged. We suggest that older roots of most plants can and do take up water, and we discuss in more detail the
uptake efficiencies and their losses in the production of other containerized plants, but very little is known about the effects of salt stress on water and nutrient uptake efficiencies and their losses in fern leaf lavender grown in containers. Therefore
an important objective in current horticultural research programs ( Ehret et al., 2001 ). One of the techniques to determine water uptake directly is by using a lysimeter or an electronic balance. This device is commonly used in the scientific
plants (19.90%). Yet some splits apparently occurred from uptake of water by the roots that is transported to the fruit by the xylem. Susceptibility to splitting in cherries appears to be related to the rate and quantity of water uptake by the fruit
this range of water stress has little influence on photosynthesis and carbon gain. Nutrient uptake is a function of nutrient availability in the rhizosphere solution. Transpiration can cause large differences between the water content in the rhizosphere
balance resulting from 1) uptake of surface water through the fruit skin ( Christensen, 1996 ), 2) via the vasculature of the pedicel ( Measham et al., 2010 ; Sekse et al., 2005 ), and coupled with 3) the much-reduced transpiration of a wet fruit under
yields. However, water uptake increased after harvest when irrigation resumed. These observations are in agreement with those of several researchers who reported recovery of sweet orange trees in less than 1 week after resuming irrigation ( Fereres et al
It has been shown that container medium volume affects plant growth and development in conventional production methods. The objective of this study was to investigate the effect of media volume on the growth and yield of the determinate tomato genotype `Pik Red' in the closed, insulated pallet system (CIPS). The CIPS contains media pouches with wicks extended down into a water reservoir. Three root media volumes were investigated: 3, 6, and 9 L (3L, 6L, and 9L). The root media were placed in pouches that varied in diameter but had constant depth. The surface area of the wicks in contact with the bottom of all pouch sizes remained constant at 110 cm2. It was hypothesized that increasing the volume of root media would allow sufficient water replenishment during the dark period to meet the plant's need the next day, and thus allow greater growth and fruit yield. Daily water uptake for each individual plant was measured by the principle of atmospheric pressure and water replacement technique. Media volume had no significant effect on water uptake during early stage of plant growth. After 45 days after planting (DAP), water uptake and plant growth were less in 3L media volume. Water uptake was similar in the 6L and 9L treatments between 45–60 DAP. Total water uptake from day 60 to 125 was greatest in the 9L, intermediate for 6L, and least in the 3L treatments. The water uptake from 1–60 DAP was reflected in the fresh shoot weight, and the water uptake was reflected in the fruit weight. Average fruit sizes and the total fruit weights for the 3L were 67.7% and 60.4% those of the 9L treatment, respectively. The 6L treatment fruit yield and fruit size were intermediate between the 3L and 9L.
Sodium bicarbonate type irrigation water is detrimental to the growth of Azalea indica `Formosa'. Alkaline irrigation water reduced both top and root growth of `Formosa' azalea. Leaf tissue sodium was significantly greater in azalea plant tissue irrigated with alkaline water. Concentrated sulfuric acid was used to acidify the alkaline water source. Acidification significantly reduced the uptake of sodium into the leaf tissue by 45%. Leaf tissue Ca and Mg levels were significantly greater from plants irrigated wtih deionized water. Azalea plants irrigated with acidified water produced significantly better quality plants. Leaf and root tissue samples were taken after 8 months.