J. K. PARMAR AND K.P. PATEL
Abstract
A pot-house experiment was carried out at Micronutrient Project, AAU, Anand to study the effect of Cr levels (0, 10, 20, 40, 80 and 160 mg kg-1 soil) in presence and absence of amendments (FYM and gypsum) on wheat on coarse loamy soil with three replications under factorial completely randomized block design. Cr application at Cr10 level; and the increase was by 9.2 per cent over control whereas Cr80 level reduced grain yield significantly by 78.11 per cent over control. It was observed that plant could not survive at Cr160. Similar results were also noted in straw yield of wheat. The grain and straw yield were improved due to application of FYM and gypsum The harmful effect of Cr was minimized to some extent at lower level of Cr i.e. Cr10 applied along with amendments. The Cr content in grain, straw, husk and root of wheat significantly increased with Cr level. The highest Cr content of grain (11.35 μg g-1), straw (8.12 μg g-1), husk (4.83 μg g-1) and root (16.32 μg g-1) were recorded due to effect of Cr80. While reverse trend was observed in case of Ni content of grain, straw, husk and root of wheat as well as Pb content of straw and root of wheat. The Pb content in grain and husk was significantly higher due to application of Cr40 and Cr80, respectively. The Cr content in different parts of wheat was significantly higher in control (Am0). The gypsum application decrease the Cr content of wheat grain by 33 per cent over control, while in case of Cr content of straw, husk and root of wheat were significantly decreased by 36.63, 18.04 and 22.23 per cent due to application of FYM over corresponding control. The Ni content of grain and straw of wheat were found increased due to effect of gypsum over control while Ni and Pb of wheat husk as well as Pb content of wheat straw was significantly decreased due to gypsum over control, respectively. The Cr content of grain, straw and husk as well as root of wheat significantly increased with increase in Cr with and without amendment. The highest Cr content in wheat was recorded at Cr160 application alone in grain, straw, husk and root of wheat due to interaction effect. The highest Ni content of grain and straw was found due to FYM application without Cr; while, Ni content of husk and wheat roots was found significantly higher in absolute control.