Effect of conventional and nano fertilizers on sunflower (Helianthus annuus) in acidic soil

ROHITHA  D S; MAMATHA  B; SRINIVAS REDDY  K M; SATHISH A; CHANNAKESHAVA  S; LALITHA  B S

doi:10.56093/ijas.v96i4.167412

Authors

ROHITHA D S University of Agricultural Sciences, Gandhi Krishi Vigyana Kendra, Bengaluru, Karnataka 560 065, India
MAMATHA B University of Agricultural Sciences, Gandhi Krishi Vigyana Kendra, Bengaluru, Karnataka 560 065, India
SRINIVAS REDDY K M College of Sericulture, Chintamani, Karnataka
SATHISH A University of Agricultural Sciences, Gandhi Krishi Vigyana Kendra, Bengaluru, Karnataka 560 065, India
CHANNAKESHAVA S University of Agricultural Sciences, Gandhi Krishi Vigyana Kendra, Bengaluru, Karnataka 560 065, India
LALITHA B S University of Agricultural Sciences, Gandhi Krishi Vigyana Kendra, Bengaluru, Karnataka 560 065, India

https://doi.org/10.56093/ijas.v96i4.167412

Keywords:

Nitrogen use efficiency, Nutrient concentration, Nutrient efficiency, Zinc uptake

Abstract

The present study was carried out during the rainy (kharif) season of 2021 and 2022 at University of Agricultural Sciences, Gandhi Krishi Vigyana Kendra, Bengaluru, Karnataka to evaluate effect of different doses of conventional and nano-fertilizers on concentration, uptake and use efficiency on sunflower (Helianthus annuus L.) in acidic soil. The experiment was laid out in a randomized block design (RBD) with three replications and comprised of 14 treatments, including varying combinations of recommended doses and nano-fertilizer. Results revealed that nitrogen, sulphur and zinc concentrations in sunflower varied significantly with application of treatment T14 (75% RDN + Nano Urea @ 4 mL/ L+ 25% ZnSO4 + Nano Sulphur @200 ppm + Nano Zinc @500 ppm) compared to treatment T2 [Package of practice (FYM + Bio fertilizers + NPK + Zn + B)], while phosphorus and potassium were non-significant. A similar kind of trend was observed in case of uptake of nitrogen, sulphur and zinc and this treatment recorded a significant improvement over other treatment. Furthermore, these findings underscore the potential for integrated use of conventional and nano formulations at optimal level to boost crop productivity without excessive inputs. Nutrients use efficiency of nitrogen (72.01 kg/kg), phosphorus (26.47 kg/kg) and potassium (35.29 kg/kg) were influenced considerably with application of different levels of conventional and nano fertilizers among different treatment combinations.

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Author Biography

MAMATHA B, University of Agricultural Sciences, Gandhi Krishi Vigyana Kendra, Bengaluru, Karnataka 560 065, India

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