NITROBENZENE: AS A POSSIBL E APPROACH TO IMPROVE MORPHOPYSIOLOGICAL AND YIELD ATTRIBUTES IN SUNFLOWER (Helianthus annus L.)

摘要

The present investigation was conducted in the screen house of Department of Plant PhysiologyJGKVV, Raipur (C.G.) to improve morphophysiological and yield components in sunflower (Helianthus annus L.) by using nitrobenzene, Nitrobenzene is a plant energizer, flowering stimulant and yield booster, prevents the premature drop of flowers and seeds. Consequently, decreasing sterility % and increasing the overall yield. The experiment was laid down in completely randomized design (CRD) wkh four treatmentsand four replications. Recommended dose of fertilizer NPKia 80:60:40 kghah~(-1) was applied, at the lime of sowing (N in two split doses). Foliar spray of nitrobenzene was done at different phenologicai growth stages of sunflower viz. vegetative, head formation, flowering and seed setting stages and observations regarding morphological, physiological and yield attributes were taken at vegetative, head formation, flowering and maturity stages. The results revealed that the growth parameters and yield attributes were favorabh affected by nitrobenzene application. The yield is the integral of all physiological and biological processes. In crux, .nitrobenzene appeared to be enough efficient in improving the growth and developmental parameters and ultimately accelerated the sink potential of the crop.