3/28/2023 0 Comments Chromium phosphate![]() ![]() Secondly, industrious pollutants also have considerable amounts of Al and Cr (Remon et al. So, most of the rocks and soils can contain appreciable amounts of the two elements at the same time (Otabbong Citation1990 Robinson et al. Firstly, both Al and Cr are present in the Earth's crust, ranking third and 21st in terms of amount among elements respectively (Kochian Citation1995 Sinha et al. Aluminum (Al) and chromium (Cr) toxicity can arise concomitantly in soil due to a number of factors. Toxic metal contamination in agricultural soils has become an alarming and persistent problem as a consequence of urbanization and rapid industrialization. Moreover, the reduction was more pronounced in Al sensitive genotype Shang 70-119. Combined stress of Cr and Al, on the whole, caused further reduction in mineral content in all plant parts of the two barley genotypes as compared to Al or Cr stress alone. Lower contents of all nutrients were observed at pH 4.0 as compared to pH 6.5. Translocation of all nutrients from roots to upper parts of plants was inhibited except Ca in pH 6.5 with Cr addition. Chromium stress resulted in reduced P, K, Mg, S, Fe, Zn and Mn contents in roots at pH 6.5 and P, K, Ca, Mg, S, Zn and Mn contents at pH 4.0. Aluminum stress reduced phosphorus (P), calcium (Ca), magnesium (Mg), sulfur (S), copper (Cu), manganese (Mn), zinc (Zn) and boron (B) contents in roots and restrained potassium (K) and iron (Fe) from being translocated into shoots and leaves. Chromium contents were much higher in the solution with pH 4.0 than in that with pH 6.5. Barley roots had much higher Al and Cr contents than above-ground plant parts. Aluminum sensitive genotype Shang 70-119 had significantly higher Cr and Al contents in plants than Al-tolerant genotype Gebeina. A hydroponic experiment was conducted to investigate the effect of pH, Al and Cr in the medium solution on the uptake of mineral elements as well as Al and Cr in the two barley genotypes differing in Al tolerance. ![]() In the current study, the influence of combined Al and Cr stresses on plant biomass, metal and nutrient contents was determined in comparison with that of Al or Cr stress alone. ![]() Aluminum (Al) and chromium (Cr) stresses often occur simultaneously in agricultural soils, and pose a great damage to crop growth, yield formation and product safety. ![]()
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