Results 221 to 230 of about 66,062 (256)

Dependence of attenuation in a vegetation canopy on frequency and plant water content

IEEE Transactions on Geoscience and Remote Sensing, 1996
Theory is presented to provide insight into the observation that attenuation through vegetation is proportional to vegetation water content. In this analysis, the canopy is modeled as a sparse layer of randomly oriented particles (leaves, stalks, etc.) over a flat, homogeneous ground plane (soil) and an expression is obtained for the "optical depth ...
David M. Le Vine, Mostafa A. Karam
openaire   +1 more source

Validation of relative water content for studying plant water relations in crambe

Industrial Crops and Products, 1992
Abstract The study of the adaptation of crambe (Crambe abyssinica Hochst. ex R.E. Fries), a potential new oil seed crop, to arid lands agriculture requires the evaluation of techniques for studying plant-water relationships specifically for crambe.
J.L. Chan, J.L. Fowler
openaire   +1 more source

Soil water content and water supply of plants in the southern Crimea

Eurasian Soil Science, 2008
In cinnamonic soils of the Nikitsky Botanical Garden (Crimea), the average productive water reserves (WR) under different plants in 1981–1990 exhibited close correlation with the field water capacity (FC) and the productive moisture range, which is equal to the difference between the FC and the permanent wilting point (WP). The soil water content (SWC)
openaire   +1 more source

Fall Water Effects on Growing Season Soil Water Content and Plant Productivity

Rangeland Ecology & Management, 2020
Abstract Understanding fall precipitation effects on rangelands could improve forage production forecasting and inform predictions of potential climate change effects. We used a rainout shelter and water addition to test effects of seasonal precipitation on soil water and annual net primary production of C3 perennial grass, C4 perennial grass, annual
Lance T. Vermeire, Matthew J. Rinella
openaire   +1 more source

Temporal dynamics of maize plant growth, water use, and leaf water content using automated high throughput RGB and hyperspectral imaging

Computers and Electronics in Agriculture, 2016
Automated collection of large scale plant phenotype datasets using high throughput imaging systems has the potential to alleviate current bottlenecks in data-driven plant breeding and crop improvement.
Yufeng Ge, Geng Bai, James C Schnable
exaly   +3 more sources

Influence of soil water content on the supply of phosphate to plants

Soil Research, 1986
Ryegrass (Lolium perenne L.) was grown in a pot trial in soil of high phosphate adsorption capacity at 10 levels of P-supply and at two water regimes, one regularly adjusted to the water-holding capacity of the pots corresponding to a water potential of -2 to -3 kPa, and the other at 20% less water volume corresponding to - 20 kPa.
MCH Mouat, P Nes
openaire   +1 more source

Determination of water content of plant leaves by beta attenuation

International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes, 1992
Abstract The method of determination of absolute water content of a plant leaf, based upon the measured relative intensities and the mass attenuation coefficient of β-particles from 204 Tl through the fresh and dry leaves of the plant, is described.
R.K. Batra, Bhupender Singh, Kulwinder Singh   +2 more
openaire   +1 more source

Iron content of selected water and land plants

1960
Plant roots contain a higher proportion of iron than the leaves and stems. The iron content of leaves is a function of the amount of chlorophyll present, which varies seasonally in any given species. The iron content of lichens and water plants, on a dry basis, averaged 5.16 and 4.99 milligrams per gram of dry matter, respectively; whereas the iron ...
openaire   +1 more source

Water deficit affects plant and soil water status, plant growth, and ginsenoside contents in American ginseng

Horticulture, Environment, and Biotechnology, 2013
American ginseng (Panax quinquefolius L.) produces pharmacologically active secondary compounds known as ginsenosides which have been shown to be influenced by both genetic and environmental factors. In a greenhouse experiment, effects of water deficit on ginseng plant growth, predawn leaf water potential (ΨLeaf), soil water potential (ΨSoil), leaf ...
Jinwook Lee, Kenneth W. Mudge
openaire   +1 more source

Relating plant and soil water content to encourage smart watering in chestnut trees

Agricultural Water Management, 2018
Abstract Chestnut orchards are facing new limitations due to scarce of soil water during summer times, mainly attributed to the low precipitation amount typically occurred on such period. The present study aims to define a methodology to improve in a smart way the utilization of water on chestnut irrigation.
Margarida Mota, Tiago Marques, Teresa Pinto, Fernando Raimundo, António Borges, João Caço, José Gomes-Laranjo   +6 more
openaire   +1 more source