Impact of amendments on rice productivity in iron toxic soils of Odisha

Abstract

A field experiment was conducted in Aeric Haplaquept to study the effect of different amendments to increase the rice crop yield in Iron toxic soil. The experiment was conducted in RBD with three replications by taking rice Var. Jajati as a test crop. The treatments were: T1- Control, T2- fresh cowdung @ 10 t ha-1 +Zn @ 5 kgha-1, T3- Press mud @ 10 tha-1, T4- Rice bran @ 3 tha-1, T5-Ca-silicate @ 1 tha-1, T6- Rice bran + Ca-silicate @ 1 tha-1, T7- K @40 kgha-1 (through Patent Kali) + Zn @ 5 kgha-1, T8- K @ 80 kgha-1 (40 kg through Patent Kali) and recommended doses of N, P and K. The results showed that the rice yield of 56.67 qha-1 in the treatment of 40 kg K from Patent Kali with 5 kg Znha-1 was higher followed by Pressmud 10 t ha-1, Ca- silicate 1t ha-1, fresh cowdung +Zn 5kgha-1 and others in sequence. Highest harvest index was found in the treatment receiving 40 kg K from Patent Kali with 5 kg Znha-1. It was observed that there was reduction in Fe concentration from initial value in all treatments.