tailieunhanh - Dynamics of zinc in sodic soil with zinc enriched organics

An incubation experiment was conducted at ADAC & RI, Trichy, to study the effect of ZnSO4, chelated Zn and Zn enriched organics on dynamics of Zn in sodic soil at different incubation period. The organics viz., FYM, press mud, poultry manure and vermicompost were enriched (10:1 ratio) with ZnSO4 @ kg ha-1 (recommended dose for hybrid maize). The ZnSO4, chelated Zn and Zn enriched organics were added @ kg ZnSO4 ha-1 . Incubated soil sample were analysed for Zn fractions viz., water soluble + exchangeable Zn (WSEX-Zn), organically bound Zn (OM-Zn), Mn-oxides bound Zn (MNOX-Zn), Zn bound by amorphous sesquioxides (AFeOX-Zn), Zn bound by crystalline sesquioxides (CFeOX-Zn), DTPA Zn and total at different intervals (15, 30 and 45 DAI). Among the various treatments, Zn enriched organics and chelated Zn applied treatments recorded higher water soluble + exchangeable Zn, DTPA-Zn and organically bound Zn when compared to application of ZnSO4 alone. The distribution of different fraction of Zn in soil were significantly influenced by Zn enriched organics and ZnSO4 application and found the in order of WSEX-Zn | International Journal of Current Microbiology and Applied Sciences ISSN 2319-7706 Volume 8 Number 01 2019 Journal homepage http Original Research Article https Dynamics of Zinc in Sodic Soil with Zinc Enriched Organics R. Ilavarasi M. Baskar G. Gomadhi and T. Ramesh Agricultural College and Research Institute Tamil Nadu Agricultural University Trichy-9 India Corresponding author ABSTRACT Keywords Dynamics Zinc Sodic soil Zinc enriched Organics Article Info Accepted 15 December 2018 Available Online 10 January 2019 An incubation experiment was conducted at ADAC RI Trichy to study the effect of ZnSO4 chelated Zn and Zn enriched organics on dynamics of Zn in sodic soil at different incubation period. The organics viz. FYM press mud poultry manure and vermicompost were enriched 10 1 ratio with ZnSO4 @ kg ha-1 recommended dose for hybrid maize . The ZnSO4 chelated Zn and Zn enriched organics were added @ kg ZnSO4 ha-1. Incubated soil sample were analysed for Zn fractions viz. water soluble exchangeable Zn WSEX-Zn organically bound Zn OM-Zn Mn-oxides bound Zn MNOX-Zn Zn bound by amorphous sesquioxides AFeOX-Zn Zn bound by crystalline sesquioxides CFeOX-Zn DTPA Zn and total at different intervals 15 30 and 45 DAI . Among the various treatments Zn enriched organics and chelated Zn applied treatments recorded higher water soluble exchangeable Zn DTPA-Zn and organically bound Zn when compared to application of ZnSO4 alone. The distribution of different fraction of Zn in soil were significantly influenced by Zn enriched organics and ZnSO4 application and found the in order of WSEX-Zn AFeOX-Zn OM-Zn CFeOX-Zn MNOX-Zn RES-Zn fractions. The higher amount Zn release was observed at Zn enriched organics and commercially chelated Zn application than the application of ZnSO4 alone and control. The release of WSEX OM CFeOX attained peak at 15 DAI and declined thereafter upto 45 DAI whereas the MNOX AFeOX RES and .