The absorption of Fe from FeSO(4), FeEDTA, and FeEDDHA (ferric ethylenediaminedi (o-hydroxyphenylacetate)), and Mn from MnSO(4), MnEDTA, and MnEDDHA, by germinating sorghum (Sorghum vulgarie Pers. var. M 35-1) was studied. The seeds were found to absorb Fe and Mn from all the sources, and these ions moved to the scutellum, shoot, and root. EDDHA facilitated greater translocation of Fe and Mn fr...

Zonal geraniums (Pelargonium ×hortorum) from seed and african marigolds (Tagetes erecta), which are known to be highly susceptible to Fe toxicity problems, were grown with I, 2, 4, or 6 mM Fe from ferrous sulfate, ferric citrate, FeEDTA, FeDTPA, FeEDDHA, ferric glucoheptonate, or ferrous ammonium sulfate in the subirrigation solution. FeEDTA and FeDTPA were highly toxic to both species, even at...

The simultaneous occurrence of several abiotic stresses is more the rule than an exception in nature. In this study pea plants were grown as hydroponics under three salinity levels (0, 50 and 100 mM NaCl), and five concentrations of iron under the form of FeEDTA (0, 0.1, 0.25, 2-optimum concentration, and 10 mg Fe/l). The separate and combined effects of both factors on growth and concentration...

Absorption of iron by plants can be increased by adding a chelating azent to a soil (2, 7, 24). Jacobson (9) found that 5 or 10 ppm of iron supplied as FeEDTA in solution cultures provided adequate iron to the plant at high pH. Other workers (7, 11, 12, 19, 20, 23, 24, 25) have confirmed these observations. Plant responses to chelate applications have been shown to differ between plant species ...

Inoculation of phosphate-solubilizing microorganisms along with rock phosphate is known to enhance the available P from soil. The success of such solubilization is largely dependent on the ability of the inoculant strain to survive under adverse environmental conditions. In this context, liquid inoculants are gaining importance and are becoming popular with longer shelf-life. In the present inv...

Description of processes such as bioaccumulation, bioavailability and biosorption of heavy metals in biofilm matrixes requires the quantification of their transport. This study shows 3D MRI measurements of the penetration of free (Fe2+, Co2+ and Gd3+) and complexed ([FeEDTA]2− and [GdDTPA]2−) metal ions in a single methanogenic granule. Interactions (sorption or precipitation) between free meta...

Communities of P-solubilizing bacteria, fungi and arbuscular mycorrhizal fungi, were evaluated in two different ecosystems. Samplings taken from two areas of Atlantic forest, in Paraty-RJ, Brazil, one with a secondary forest and the other with a grass pasture were studied. Four growth media: GL (glucose and yeast extract), GES (glucose, soil extract, KNO3, CaCl2, MgSO4, NaCl, FeEDTA and micronu...

Bio-fortification of food crops is a cost-effective and sustainable agricultural strategy to decrease malnutrition arising from micronutrients deficiencies. Accordingly, the pot experiments have been conducted to investigate the effectiveness of various foliar-applied iron (Fe) fertilizers in increasing agro-morphological traits and grain micronutrients concentrations of bread wheat plants unde...