Growth test and Yield of some approved varieties of Rice Oryza sativa L. under different environmental conditions

A field experiment was carried out in five cultivation sites (L) ( Dhi Qar 1 (Shatrah) ( L1 ), Dhi Qar 2 (Karma) L2) ), Al-Muthanna (Al-Rumaitha) ( L3 ), Al-Qadisia (Agricultural Research Station) ( L4 ), Najaf (Al-Mishkhab) ( L5 ) to grow six certified varieties of Rice (V) (Yasmin ( V1 ), Furat ( V2 ), Dijlah ( V3 ), Amber baraka ( V4 ), Ghadeer ( V5 ), Amber 33 ( V6 ) ) during summer agricultural season 2019 for the purpose of studying The qualities growth and quotient components for varieties the Rice under the influence of various environmental conditions. The experiment was use Randomized Complete Block Design (RCBD) with three replications. It showed The consequences excellence Najaf site ( L5 ) significantly over the remaining sites, with the highest grain yield reaching 4.216 t.ha−1. Furat variety (V2) was superior to most of the varieties for the characteristics (number of panicles, weight of 250 grains and the total grain yield) (446.0 panicle.m−2, 10.17 g, 5.08 t.ha−1 ) respectively. Interaction treatment L4V2 achieved the highest average grain yield 5.680 t.ha−1 Compared to the rest of interaction treatment.