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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
The present investigation entitled “to study the effect of Azotobacter isolates on growth of African marigold (Tagetes erecta L.)” (Variety – Omni Yellow) at PG farm of Rajarshee Chatrapati Shahu Maharaj College of Agriculture, Kolhapur during summer season of the year 2020-21. The randomized block design (RBD) was used for the field experiment. The results of investigation showed that the application of 75% RDN + 100%RDP and K + seedling + soil both treated with commercial strain of Azotobacter (Azotobacter chroococcum) found more effective and showed profuse growth and yield characters of African marigold followed by the treatment 75% RDN + 100% RDPK + seedling + soil both treated with Strain – A of Azotobacter (ATHM1) and 75% RDN + 100% RDPK + seedling + soil treated with Strain – B of Azotobacter (ATKM3). These treatments were statistically at par with one another and superior over other treatments. The treatment 75% RDN + 100% RDPK + seedling + soil both treated with commercial strain of Azotobacter (Azotobacter chroococum) showed profuse effect on the growth parameter viz. maximum plant height (74.53 cm), primary branches (19.50), secondary branches (61.87) and plant spread (50.63 cm). It enhanced the flowering parameters viz. number of buds (17.92), number of flowers (9.30), flower diameter (7.56 cm) and weight of single flower (16.26 gm) and maximum yield per plot (15.86 kg), and total yield (16.31 t/ha). It has also increase a available N in soil (177.88 kg/ha) followed by the results of treatment 75% RDN + 100% RDPK + seedling + soil both treated with Strain – A of Azotobacter (ATHM1) gave plant height (73.97cm), primary branches (19.40), secondary branches (60.80) and plant spread (48.39cm), number of buds (16.99) number of flowers (8.78), flower diameter (7.16 cm) and weight of single flower (15.78 gm) and gave yield per plot (14.72 kg) and total yield (15.05 t/ha), also has increase a available N content of soil (175.77 kg/ha). Thus, the present investigation confined that an application of Azotobacter strains with the seedling dip treatment and soil drenching found to be more effective along with 75 % RDN, and 100% RDPK and saving of 25% dose of nitrogen.