Silicon is the second most abundant element in soils, the mineral substrate for most of the world's plant life. The soil water, or the "soil solution," contains silicon, mainly as silicic acid, H4SiO4, at 0.1-0.6 mM--concentrations on the order of those of potassium, calcium, and other major plant nutrients, and well in excess of those of phosphate. Silicon is readily absorbed so that terrestri...

`Growth and mineral nutrition of ®eld crops' deals with plants that constitute the basic staple food for most of the world population, and with some plants that are important as livestock feed or provide raw material for industrial processes. As stated by the authors in their Preface, the book takes an applied approach, and is supported in great part by experimental results obtained in Brazil, ...

Soil fertility and nutrient-related plant functional traits are in general only moderately related, hindering the progress in trait-based prediction models of vegetation patterns. Although the relationships may have been obscured by suboptimal choices in how soil fertility is expressed, there has never been a systematic investigation into the suitability of fertility measures. This study, there...

trient concentration in the leaves (Beaufils, 1973). Those dual ratios represent the minimum expression for nutriIn this study, we evaluated the potential of reflectance and fluoresent interactions. Parent and Dafir (1992) developed a cence for the detection of the Compositional Nutrient Diagnosis (CND) N index (IN). The CND reflects nutrient deficiencies as well new indicator of plant nutritio...

biofilm formation in bacteria is an important survival strategy. biofilm of probiotic bacillus subtilis consist of long chains of cells that are covered by a polymeric matrix of exopolysaccharides. this bacterium is known as one of the most effective biocontrol agents against plant pathogens and has a high ability in biofilm formation. this study was aimed to investigate the effect of some envi...

Two laboratory and greenhouse experiments were carried out to compare and evaluate the nutrition of Phaseolus vulgaris L. plant with foliar spray and root media. In laboratory, effect of four treatments; N- nutrition solution; Urban solid waste leachate (USWL); vermi-compost extract and control (distilled water) on germination and seeding growth of Phaseolus vulgaris L. was examined for 10 days...

A ground-based comparison of plant nutrient delivery systems that have been developed for microgravity application was conducted for dwarf wheat (Triticum aestivum L. 'Yecora Rojo') and rapid-cycling brassica (Brassica rapa L. CrGC#1-33) plants. These experiments offer insight into nutrient and oxygen delivery concerns for greenhouse crop production systems. The experiments were completed over ...

Ubiquitin (Ub) is well-established as a major modifier of signaling in eukaryotes. However, the extent to which plants rely on Ub for regulating nutrient uptake is still in its infancy. The main characteristic of ubiquitination is the conjugation of Ub onto lysine residues of acceptor proteins. In most cases the targeted protein is rapidly degraded by the 26S proteasome, the major proteolysis m...