Influence of Organics Micronutrients and Plant Growth Regulators on Productivity Ptential in Carrot Daucus carota L

Abstract

Field experiments were conducted at Main Agricultural Research Station, University of newlineAgricultural Sciences, Dharwad during rabi 2003-04 and 2004-05 to study the influence of organics, newlineplant growth regulators and micronutrients on various morphological, biochemical, quality parameters newlineand yield and yield components in two carrot varieties. The experiment was laid out in factorial newlinerandomized block design with sixteen treatments and three replications. newlineThe morphological parameters viz., plant height, number of leaves and leaf length were newlinesignificantly higher due to the application of RDF + GA3 (40 ppm) and RDF + cytozyme (2000 ppm) newlinecompared to other treatment. Dry matter accumulation in leaves, roots and total dry matter differed newlinesignificantly between varieties and treatments at all the stages. Among treatments, significantly higher newlinedry matter accumulation was recorded with the application of RDF + GA3 (40 ppm) followed by RDF + newlinecytozyme (2000 ppm). The variety Pusa kesar showed significantly higher number of leaves and root newlinedry matter over Dharwad local. newlineAll the growth parameters were significantly higher with the application of RDF + GA3 (40 newlineppm) and RDF + cytozyme (2000 ppm). Among the varieties, Pusa kesar recorded significantly higher newlineLA, LAI, SLA, LAD and BMD as compared to Dharwad local. Yield components viz., root length, root newlinediameter and fresh weight of root were significantly higher with the application of RDF + GA3 (40 ppm) newlineand RDF + cytozyme (2000 ppm) and the variety Pusa kesar showed significantly higher values over newlineDharwad local. newlineThe various biochemical parameters (chlorophyll a , chlorophyll b , total chlorophyll and NRA) newlineand quality parameters (sugar content, carotene content, TSS and per cent solids) were recorded newlinesignificantly higher with the application of RDF + GA3 (40 ppm) followed by RDF + cytozyme (2000 newlineppm) over other treatments. Among varieties, Pusa kesar recorded significantly higher values over newlineDharwad local. The benefit:cost ratio was higher with the application of RDF + GA3 (40 ppm