Studies on effect of Azotobacter and GA3 on yield of flower as loose flower of Marigold (Tagetes spp.)

Abstract

Marigold (Tagetes erecta L.) is a traditional loose flower crop that is commercially farmed in a number of countries. is a member of the Asteraceae family (Compositae). It is majorly used as loose flower, garlands, and trap crop for nematodes. The chemicals used in the cultivation not only increase the cost of production but also deteriorate the soil fertility. The study was performed at Main Experimental Station Department of Floriculture and Landscape, Acharya Narendra Deva University of Agriculture and Technology, Kumarganj, Ayodhya 224229 (U.P.), India during the year 2019-20 and 2020-21on African marigold cv. Pusa Narangi Gainda in which combinations were used with Azotobacter and Gibberellic Acid. The results indicates that the highest flower yield per plant was recorded with the application of azotobacter by soil treatment @ 4 l/ha + 200ppm GA 3 at 30 DAT, whereas minimum flower yield per plant was noted in control also the highest flower yield per hectare was recorded with the application of azotobacter by soil treatment @ 4 l/ha + 200ppm GA 3 at 30 DAT, whereas minimum flower yield per hectare was noted in control.