Studies on biofertilizers and inorganics on growth and yield of carrot

The investigation entitled “studies on biofertilizers and inorganics on growth and yield of carrot” was carried out at the Horticultural Research Station, Dr. Y. S. R. Horticultural University, Pandirimamidi, East Godavari District, Andhra Pradesh during Rabi 2017-18. The experimental design adopted was the factorial RBD with three replications. The first factor, chemical fertilizers with three levels (100%, 75%, and 50% of RDF) and second factor, the combination of five biofertilizers (PSB, KSB, Azospirillum, Azotobacter, VAM) were taken. The experiment included 12 treatment combinations. The results revealed that, among the chemical fertilizer levels, the application of 100% recommended dose of fertilizers (75:60:50 kg/ha) and within the biofertilizer levels the combination of PSB+ KSB+ Azospirillum+ Azotobacter+ VAM showed a significant difference in the growth and yield characters in comparision with other levels. Among the interaction effects the combination of 100% RDF+ PSB+ KSB+ Azospirillum+ Azotobacter+ VAM recorded highest values in terms of growth characters viz., plant height (72.59 cm), number of leaves (18.60), fresh and dry weight of plant (107.57 g and 34.25 g respectively) and yield characters viz., root length (23.07 cm), fresh and dry weight of root (121.99g and 37.52 g respectively), harvest index (53.55%), yield per plot (5.82 kg/ plot) and yield per hectare (194 q/ha).