Agronomical Evaluation of Three Malt Barley Varieties Using Correlation and Regression Analysis Under Different Nitrogen Fertilizer Rate

Abstract

The production and productivity of barley primary determined from the status its growth, phonological and agronomical parameters. But the direct and indirect effect of parameters as well as high its association with yield can’t determine until correlation and regression was done. Therefore a field experiment was conducted on two different site of lemu bilbilo wereda from July- December 2018/2019 cropping season to study Agronomical evaluation of three malt barley varieties using correlation and Regression analysis under different nitrogen fertilizer rate. The experiment was laydown in split plot design nitrogen fertilizer as main plot and Varity as sub plot with in three replication. The treatments were five n fertilizer rate (11.5, 23, 34.5, 46 and 57.5) kg/ha as main plot and three malt barley varieties as sub plot factor and two site (Lemu burkitu and Bekoji negeso) kebele. The result showed that exept germination energy at Bekoji negeso and spike length at Lemu burkitu all parameters had significantly and positively correlated with grain yield. In addition to this spike / 50 cm had significantly and positively correlated with grain protein content, number of productive tillers per plant and plant height at both locations.