Effect of conjoint use of conventional and nano-fertilisers on Ethiopianmustard (Brassica carinata) in north-western Himalayas

ANSHUL KUMAR; B S MANKOTIA; NITIN  BAJYA; DEERAJ  SAIN

doi:10.56093/ijas.v96i5.171967

Authors

ANSHUL KUMAR College of Agriculture, Chaudhary Sarwan Kumar Himachal Pradesh Krishi Vishvavidyalaya, Palampur, Himanchal Pradesh 176 062, India
B S MANKOTIA Shivalik Agricultural Research and Extension Centre (CSK Himachal Pradesh Krishi Vishvavidyalaya), Kangra, Himachal Pradesh 176 001, India
NITIN BAJYA Chaudhary Sarwan Kumar Himachal Pradesh Krishi Vishvavidylaya, Palampur, Himachal Pradesh 176 062, India
DEERAJ SAIN Chaudhary Sarwan Kumar Himachal Pradesh Krishi Vishvavidylaya, Palampur, Himachal Pradesh 176 062, India

https://doi.org/10.56093/ijas.v96i5.171967

Keywords:

Benefit: cost ratio, Gross returns, Nano-DAP, Nano urea, Yield

Abstract

The present experiment was conducted to study the effect of conventional and nano-fertilisers on growth, yield attributes and yield of Ethiopian mustard (Brassica carinata A. Brown) (variety Jayanti) in north-western Himalayas during winter (rabi) season of 2023–24 and 2024–25 at Shivalik Agricultural Research and Extension Centre, Kangra, Himachal Pradesh. The experiment was laid out in a factorial randomised block design (F-RBD) involving three levels of RD-NP (Recommended dose of nitrogen and phosphorus), viz. 100%, 75% and 50% RD-NP and three sprays of nano-fertilisers, viz. two-sprays of nano-urea @4 mL/L at 25 and 45 DAS (days after sowing), two sprays of nano-DAP @4 mL/L at 25 and 45 DAS, and two sprays of nano-urea + nano-DAP (4 mL/L each) at 25 and 45 DAS, and one absolute control (water spray). The pooled analysis recorded that 100% RD-NP had significantly higher values of plant height, number of primary and secondary branches/plant, siliquae/plant, seeds/siliqua, seed yield and biological yield as compared to the treatments 75% RD-NP and 50% RD-NP. Among nano-fertilisers, two sprays of nano-urea + nano-DAP @4 mL/L (each) recorded higher values of plant height, number of primary and secondary branches/plant, siliquae/plant, seeds/siliqua, seed yield and biological yield than their individual application. The results indicated that foliar sprays of nano-fertilisers showed positive influence on growth, yield attributes and yield in Ethiopian mustard. Thus, two spray of nano-urea + nano-DAP @4 mL/L each at 25 and 45 DAS with application of 60 kg N, 40 kg P2O5 and 40 kg K2O/ha may be advisable in mid-hills of north-western Himalayas.

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