ABSTRACT:

The experiments were conducted during the 2021 and 2022 cropping seasons to evaluate the adaptability, yield and yield components of some Nerica rice varieties at Riyom on the Jos, Plateau. The treatment consisted of four Nerica (1,2,3 and 4) varieties and Sipi as a check. The experimental design was Randomized Complete Block Design (RCBD) with three replications. Plot size was 3.0m x 4.0m. Planting was done by hand dibbling at 20 by 20cm inter and intra row spacing at the seed -1 rate of 60kgha respectively. The parameters measured were number of tillers, number of spikes/ m , 2-1 plant height (cm), panicle length(cm), number of days to maturity and grain yield (kgha ). The results showed that in the first year of study, number of tillers per hill was significantly higher while that of the second year, there was no significant difference in number of tillers per hill among the rice varieties. However, in both years, there was no significant difference among the rice varieties as 2 regards number of spikes /m , plant height and panicle length. While the number of days to maturity and grain yield of the Nerica varieties were generally higher compared to the check. Based on the results of these studies, it showed that Nerica rice varieties performed well by producing good components and yields. Also, it indicated that the Nerica rice varieties are adaptable to the Jos Plateau Climate, Soil and Environment