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- Title
Effect of biofertilizers on soil microbial count, nutrient availability and uptake under november sown onion.
- Authors
Talwar, Dilpreet; Singh, Kulbir; Singh, Jagdish
- Abstract
Biofertilizers improves the soil microbial content, Soil nutrient status and nutrient uptake by plant. In an experiment, fifteen treatments comprised of various combinations of biofertilizers, organic manures and chemical fertilizers were compared to access the impact of different sources of nutrient on performance of onion. The highest soil organic carbon (0.40%) was observed in the treatments T12 (Farm Yard Manure (FYM) @ 20 t/ha) and T12 (FYM @ 20 t/ha + Azotobacter + Vesicular-Arbuscular Mycorrhizae (VAM)). Highest bacterial (24.5 X 106) and actinomyctes count (29.9 X 104) was recorded in T12 (FYM @ 20 t/ha + Azotobacter + VAM) treatment while highest fungal count (17.5 X 103) was observed in T3 (Azospirillium + Recommended dose of NPK) treatment. At the time of harvesting, available nitrogen (N), Available phosphorus (P) and Available potassium (K) were higher in treatment T3 (Azospirillium + Recommended dose of NPK), T9 (Azotobacter + VAM + Recommended dose of NPK) and T13 (Poultry Manure @ 5t/ha) treatments respectively than that in other treatments. Azospirillum and Azotobacter application along with recommended dose of N, P and K improved the fertility status of soil. The N uptake was significantly higher in T3 treatment (162.6 Kg ha-1) as compared to all other treatments except T1 and T9 treatments while P uptake (13.6 Kg ha-1) was significantly higher in T9 treatment than that in other treatments except T1, T3, T5 and T7 treatments. The K uptake was significantly higher in T3 treatment (126.9 Kg ha-1) as compare to all other treatments except T1 and T9 treatments. The present study highlights the need of use of biofertilizers along with organic and inorganic manures/fertilizer to enhance the nutrient availability and improve soil health.
- Subjects
BIOFERTILIZERS; SOIL microbiology; NUTRIENT uptake; ONION composition; CARBON in soils; VESICULAR-arbuscular mycorrhizas
- Publication
Journal of Applied & Natural Science, 2017, Vol 9, Issue 1, p55
- ISSN
0974-9411
- Publication type
Article
- DOI
10.31018/jans.v9i1.1149