The field experiment was carried out during the year 2016 and 2017under KVK's in Sengamari Habigaon village of Dibrugarh district and Moumaikigaon of Golaghat district of Assam for Popularization of marigold cv. Seracole for income generation through front line demonstration. The data were recorded for flower yield, quality and economics of marigold cultivation for summer and winter season. The results showed that in October planting the average weight of flower 6.35g, flower diameter 7.35 cm, number of ray florets 162.95, disc florets 75.00, self life 19.20 days, loose flower life 4.55 days, number of flower per plant 139.0, yield per plant 0.85 kg, yield per plot 14.40 kg, yield per hectare 240.00 q with good compact flower which was closely followed by March planting with 6.10g, 7.10 cm, 156.60, 65.80, 17.92 days, 3.40 days, 128.75, 0.81 kg, 11.30kg and 234.00 q respectively. But the benefit cost ratio was showed highest in March planting of 4.85 compared to October planting 3.0 due high demand and price in the summer season.

An experiment was conducted in Department of Horticulture, Assam Agricultural University, Jorhat, to study the effect of drying methods and packaging on retention of carotenoid content in dried petals of marigold cv. Seracole during 2016-2017. Petals were subjected to drying employing three different methods viz., sun drying, shade drying and cabinet drying. Among the various drying methods tested, cabinet drying gave the highest carotenoid content (337.64μg/g) compared to the other methods. Three different packaging materials viz., LDPE 200 gauge, LDPE 300 gauge and LDPE 400 gauge were utilized for the experiment. The carotenoid content was highest in the first month with LDPE packaging materials of 400 gauge (270.47 μg/g), 300 gauge (269.64 μg/g) and 200 gauge (266.94 μg/g) which decreased with advancement of storage period.

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