Correlation and path coefficient analysis were studied in a set of 52 diverse genotypes of roselle (Hibiscus sabdariffa) during kharif, 2018 at ARS Amadalavalasa for eleven important traits. Fibre yield per plant was found to be significantly and positively correlated for all the characters plant height, base diameter, mid diameter, petiole length, number of nodes per plant, green fresh weight per plant, dry stick weight per plant and fibre wood ratio; whereas days to 50% flowering showed significant negative association both at phenotypic and genotypic levels. All these yield component characters also exhibited strong positive correlation among themselves. Partitioning of correlation coefficients of various yield components upon fibre yield into direct and indirect contributions revealed that dry stick weight per plant has maximum direct effect upon fibre yield per plant followed by fibre wood ratio. Therefore, these characters may serve as potent characters for selection in crop improvement programmes for high fibre yield in roselle.

Kodo millet (Paspalum scrobiculatum L.) genotypes were evaluated at Agricultural Research Station, Vizianagaram to assess genetic variability, heritability and genetic advance for six yield contributing traits. The ANOVA revealed significant differences among eighteen genotypes for all the characters included under study except plant height, number of productive tillers per plant and fodder yield. Moderate PCV was recorded for fodder yield followed by grain yield and plant height whereas the GCV for all the characters were low compared to PCV indicating the interaction of genotypes with the environment. High heritability was recorded for days to maturity and days to 50% flowering. The maximum genetic advance as percent of mean was observed for days to 50% flowering followed by days to maturity. High heritability coupled with moderate genetic advance as percent of mean was recorded for days to 50% flowering indicating that these traits are under influence of both additive and nonadditive gene action and selection may be effective for this trait. Grain yield per plant recorded moderate heritability with moderate genetic advance as percent mean which also indicates presence of both additive gene action and this trait was found to be significantly and positively correlated with days to 50% flowering, days to maturity and fodder yield. Indirect selection for days to 50% flowering may help in better advancement for grain yield as flowering is supposed to be controlled by fewer genes with major effect compared to grain yield. The above yield components also exhibited positive intercorrelation among themselves.

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The study was carried out during rabi season of 2016-17 to 2018-19. All the front line demonstrations were carried out in an area of 12 hectares with 30 demonstrations. The results of FLD's showed that improved technologies consisting of use of improved variety, seed treatment with Azospirillium, balanced fertilizer application and integrated pest management recorded higher yield as compared to farmer's local practice. The results indicated that on an average 20.52 per cent higher grain yield was recorded in demonstration plots than the local check. The extension gap, technology gap and technology index were 2.45 q/ha, 4.41 q/ha and 3.71 per cent, respectively. Average of three years data revealed that SPV-2217 variety under improved practices recorded higher grain yield