網頁2003年7月1日 · Examination of the sensitivity and variability of maximum daily trunk shrinkage, midday stem water potential, and daily transpiration rate in their responses to withholding irrigation from field-grown drip-irrigated 'Golden delicious∑ apple trees in a commercial orchard shows that the choice of a certain water stress indicator should be … 網頁2024年5月25日 · Magnetic water treatment, as a potential and eco-friendly new technology [9], is widely used in the field of agriculture [10]. ... The effect of magnetic treatment fresh water on stem-to-total ratio, leaf-to-total ratio, and root-to …

Soil Water Potential - 土壤水勢

At a potential of 0 kPa, soil is in a state of saturation. At saturation, all soil pores are filled with water, and water typically drains from large pores by gravity. At a potential of −33 kPa, or −1/3 bar, (−10 kPa for sand), soil is at field capacity. Typically, at field capacity, air is in the macropores and water in micropores. Field capacity is viewed as the optimal condition for plant growth and microbial activity. At a potential of −1500 kPa, soil is at its permanent wilting point, at which plan… 網頁Solute potential (Ψ s ), also called osmotic potential, is negative in a plant cell and zero in distilled water. Typical values for cell cytoplasm are –0.5 to –1.0 MPa. Solutes reduce … inhalation medications for nebulizer

(PDF) Stem Water Potential and Apple Size - ResearchGate

網頁Table 1. Effects of applied water amounts on predawn leaf (ΨPD), midday stem (Ψstem), and midday leaf (Ψl) water potentials for selected grape cultivars, dates of measurement, and rootstock. Applied quantities of water were various fractions of estimated full ETc. Each value is the mean of a single leaf replicate measured on six different vines for data … 網頁2001年4月1日 · The vine water status was assessed by measuring the stem water potential (Ψ stem in megapascal, MPa) and the C isotope composition of the grape sugars (δ 13 C … 網頁1988年10月1日 · Under water stress, the midday stem water potential dropped below - 4.5 MPa corresponding to a ~ 50 % loss of hydraulic conductivity. A 70 % reduction in stomatal conductance led to a strong ... mjus facebook