Reducing options of ammonia volatilization and improving nitrogen use efficiency organic and inorganic amendments in wheat ( L.).

BACKGROUND

This study investigates the effect of organic and inorganic supplements on the reduction of ammonia (NH) volatilization, improvement in nitrogen use efficiency (NUE), and wheat yield.

METHODS

A field experiment was conducted following a randomized block design with 10 treatments ., T-without nitrogen (control), T-recommended dose of nitrogen (RDN), T-(N-(n-butyl) thiophosphoric triamide) (NBPT @ 0.5% w/w of RDN), T-hydroquinone (HQ @ 0.3% w/w of RDN), T-calcium carbide (CaC @ 1% w/w of RDN), T-vesicular arbuscular mycorrhiza (VAM @ 10 kg ha), T-(azotobacter @ 50 g kg seeds), T-(garlic powder @ 0.8% w/w of RDN), T-(linseed oil @ 0.06% w/w of RDN), T-(pongamia oil @ 0.06% w/w of RDN).

RESULTS

The highest NH volatilization losses were observed in T at about 20.4 kg ha per season. Significant reduction in NH volatilization losses were observed in T by 40% T by 27%, and T by 17% when compared to the control treatment. Soil urease activity was found to be decreased in plots receiving amendments, T, T, and T. The highest grain yield was observed in the T treated plot with 5.09 t ha and straw yield of 9.44 t ha in T.

CONCLUSION

The shifting towards organic amendments is a feasible option to reduce NH volatilization from wheat cultivation and improves NUE.