2 results

Nutritional Efficiency of Eucalyptus Clones Under Water Stress

Caroline Müller, Bárbara Elias Reis Hodecker, Andrew Merchant, Nairam Félix de Barros

30/Oct/2017

Abstract Plant health and nutrition are strongly influenced by the availability of water. The objective of this study was to evaluate the different patterns of initial growth and nutritional efficiency of ten drought-stressed Eucalyptus clones. Water stress conditions were induced by osmotic stress, by gradual addition of polyethylene glycol 6000 over a 20-day period. Drought stress significantly reduced the dry matter of leaves, roots, and the whole plant as well as the nutritional efficiency of most clones. Clone PL040 was […]

BEYOND THE “LEAST LIMITING WATER RANGE”: RETHINKING SOIL PHYSICS RESEARCH IN BRAZIL

Quirijn de Jong van Lier, Paulo Ivonir Gubiani

01/Jul/2015

As opposed to objective definitions in soil physics, the subjective term “soil physical quality” is increasingly found in publications in the soil physics area. A supposed indicator of soil physical quality that has been the focus of attention, especially in the Brazilian literature, is the Least Limiting Water Range (RLL), translated in Portuguese as “Intervalo Hídrico Ótimo” or IHO. In this paper the four limiting water contents that define RLL are discussed in the light of objectively determinable soil physical […]