Removal of Chromium by Some Multipurpose Tree Seedlings of Indian Thar Desert

Abstract

An experiment was conducted to study the potential of chromium (Cr) phytoaccumulatory capabilities of four tree species viz., Anogeissus latifolia, Terminalia arjuna, Tecomella undulata, and Salvadora persica Possibility of enhancement of Cr uptake by citric acid and vesicular arbuscular mycorrhizal fungi (VAM) amendments were also tried. Cr is a major pollutant of the environment. Chromium can exist in oxidation states from III to VI, but the most stable and common forms of Cr are trivalent and hexavalent species. Cr(VI) was more toxic to the tree growth in terms of collar diameter (CD) increment in all the tree species than Cr(lll). Roots accumulated more Cr than shoots in all the tree species. There was more than 10 fold increase in root Cr content in comparison with shoot Cr content in all the trees at all the concentration of Cr and all sources of Cr. Citric acid significantly increased the Cr content in the tissues of roots in all the species under both speciation of Cr. The highest increase in Cr content brought by 20 mM citric acid addition was in A. latifolia Results suggest that Anogeissus latifolia is a potential Cr accumulator with citric acid as soil amendment.

Evaluation of the Effect of Organic and Liquid Manures on Growth and Yield Attributes of Urdbean in Semi-Arid Region

“…dry matter accumulation, CGR, RGR and dry weight of root nodules. These results are in close conformity with the findings of Mathur et al [11], Kumavat [12], Singh et al [7] and Kudi et al [8] in blackgram and Singh et al [13]. This was due to better supply of nitrogen and organic carbon through optimum mineralization through vermicompost made the bacteria active thereby promoting better nodule growth and higher nitrogen fixation.…”

Biofertilizer as Prospective Input for Sustainable Agriculture in India

“…As biofertilizers are live microorganisms, usually dies or loss their activity in case of temperature fluctuation. (2013, 2014 and 2015) Such situations occur frequently while biofertilizer containing packets are delivered from production units to sowing fields (Mathur et al, 2010). There is also lack of knowledge about the storage condition among the farmers for which actual potential of biofertilizers are not explored and sometimes farmers' are unwilling to use (Panda, 2013).…”

“…Some biofertilizer production units do not have sufficient technically well-qualified microbiologist or skilled persons who can make available high quality biofertilizers rather depend on more of non-skilled labours working on contract basis that leads to substandard biofertilizers (Mahdi et al, 2010;Mathur et al, 2010;Motghare and Gauraha, 2012). In addition, non-availability of good quality peat in India has also headed to the development of alternative carriers like, lignite, charcoal, etc.…”