Goswami, JogeshDAS, NILAKHI2023-11-182023-11-182021https://krishikosh.egranth.ac.in/handle/1/5810201500A field experiment entitled “Evaluation of panchagavya as organic input for late sown rapeseed production” was conducted at the organic block of the Instructional-cum-Research (ICR) Farm, Assam Agricultural University, Jorhat during rabi season of the year 2020- 2021 to evaluate the effects of panchagavya on growth, yield and economics of late sown rapeseed as well as their overall impact on soil health. The experiment was laid out in Randomised Block Design with three replications. The experiment consisted of eight treatments viz.,T1: control (no organic input )), T 2 : RDN through vermicompost , T 3 : Vedic panchagavya soil application (3%), T 4 : 1 tonne VC/ha as basal + Vedic panchagavya foliar application (3%), T 5 : e nriched panchagavya soil application (3%), T 6 : e nriched panchagavya foliar application ( 3%), T 7 : Vedic panchagavya basal application (1.5%) + Vedic panchagavya foliar application (1.5%), T 8 : e nriched panchagavya basal application (1.5%)+ enriched panchagavya folia r application ( 1.5%). The soil of the site where experiment was carried out was sandy loam in texture, acidic in reaction. The soil of experimental site was medium in organic carbon (0.48 %), medium in av ailable N, P 2 O 5 and K 2 O (268.86, 21.87 and 172 .82 kg/ha , respectively The crop was sown on 9 December, 2020 and harvested on 19 March, 2021. The crop took average duration of 101 days during experimentation. Experimental findings revealed that different treatments significantly influenced bo th growth and yield attributing characters of late sown rapeseed. Maximum values of growth parameters were recorded in 1tonne VC/ha as basal + Vedic panchagavya FA (3%) treatment (T 4 ). Maximum values of yield parameters were also observed under 1tonne VC/h a as basal + Vedic panchagavya FA (3%) treatment. The highest seed yield (6.89q/ha) and stover yield (20.48 q/ha) were recorded in this treatment (T 4 ). The highest oil yield (258.91 kg/ha) of rapeseed and also increased nutrient content and up take were recorded with application of 1tonne VC/ha as basal + Vedic panchagavya FA (3%) 3%). The better chemical properties of the soil after harvesting was recorded in RDN through VC (T 2 ) treatment but better biological properties viz ., microbial population i.e., bacteria ( 26.12 x 10 7 cfu/g of soil ) and fungi ( 29.89 x 10 4 cfu/g of soil) and dehydrogenase activity (9.48 µg TPF/g/24 hrs were recorded under treatment T 4 The economic study revealed that the highest gross return (Rs. 55120/ha) was observed in 1 tonne VC/ha as basal + Vedic panchagavya foliar application (3%) (T 4 ) treatment. But the maximum net return (Rs. 34020/ha) and B:C ratio (1.90) were recorded in enriched panchagavya foliar application ( (T 6 From t his study, it can be concluded that the Vedic panchagavya @ 3% as foliar application along with 1 ton ne of VC/ha as basa l (T 4 ) under late sown condition was found to be the best among all the treatments in terms of growth and yield attributes as well as yield of the rapeseed var. TS 67 But, foliar application of enriched panchagavya @ 3% (T 6 ) was identified as profitable among all the treatments with the highest B:C ratio o f 1.90.EnglishThesis