Effect of Nano Nitrogen and Nano Zinc on the Growth and Yield of Sweetcorn
Rivu Sengupta
Department of Soil Science and Agricultural Chemistry, Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar-751 030, India.
Gayatri Sahu *
Department of Soil Science and Agricultural Chemistry, Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar-751 030, India.
P. P. Pradhan
Department of Soil Science and Agricultural Chemistry, Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar-751 030, India.
A. K. Pal
Department of Soil Science and Agricultural Chemistry, Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar-751 030, India.
*Author to whom correspondence should be addressed.
Abstract
Aim: To study the effect of nano nitrogen and nano zinc on the growth and yield of sweetcorn (variety KSP-5389) in Inceptisol of Odisha.
Experimental design: The experiment was laid out in randomized block design (RBD) with three replications and eight treatments. The treatments details were T1-Absolute control, T2- RDF (Recommended dose of N: P2O5: K2O :: 80: 40: 40), T3- RDF + Zn @ 5 kg ha-1 , T4- 50 % N + N foliar spray ( Vegetative Stage), T5- 50% N + N foliar spray ( Vegetative Stage + Tasselling), T6- 50% N + N foliar spray ( Vegetative Stage + Tasselling) + Zn foliar spray (Silking stage), T7- 50% N + N foliar spray ( Vegetative Stage + Tasselling) + Zn foliar spray (Silking+Milking), T8- N spray ( Veg+ Tasselling ) + Zn spray (Silking+ Dough). P & K was common to all treatment except control.
Place and duration of study: A field experiment was conducted during Rabi season, February 2022 at khujimahal, Chandaka, Faculty of Agricultural Sciences, Siksha ‘O’ Anusandhan (Deemed to be University), Bhubaneswar Odisha.
Results: The results showed that highest biological yield (1685 kgha-1) was found in the application of (50% N with two foliar sprays of nano N at vegetative and tasselling stage and two foliar spray of nano Zn @4ml L-1 at silking and milking stage). Whereas lowest cobyield (691 kg ha-1) was observed in absolute control. Compare with recommended dose of fertilizer with Zn, the application of 50% N with Nano N and Nano Zn as double foliar spray, the yield was increased by 41% whereas 26% yield increase by single foliar application of nano Zn.
Conclusion: Highest harvest index HI was found in the application of 50% N with two foliar sprays of nano N at vegetative and tasselling stage and two sprays of nano Zn @4 ml L-1 at silking and milking stage and lowest in control. Application of 50% N with two foliar sprays of nano N at vegetative and tasselling stage and two spray of nano Zn @4ml l-1 at silking and dough stage (T8) helps in increasing the yield of sweet corn as well as nutrient concentration and nutrient uptake followed by T7 (50 % N + N foliar spray at vegetative stage @ 4ml l-1 + Zn spray at Silking and Milking stage).
Keywords: Nano nitrogen, nano zinc, sweet corn, foliar application, yield, uptake