Response of sunflower (Helianthus annuus L.) to foliar application of nano fertilizers

Vadlamudi, J S and Anitha, S and Sawargaonkar, G L and Kamdi, P J and Vijayan, D (2023) Response of sunflower (Helianthus annuus L.) to foliar application of nano fertilizers. The Pharma Innovation Journal, 12 (2). pp. 1477-1482. ISSN 2277-7695

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Abstract

A field experiment was conducted at International Crops Research Institute for the Semi-Arid Tropics, Hyderabad during early summer season in 2021 and 2022 to study the “Effect of foliar application of nano fertilizers on yield attributes, seed, and stalk yield of sunflower”. The soil was clayey (Vertisols) in texture and experiment was laid out in randomized block design with 3 replications and comprised of 12 treatments. The treatments comprise of conventional fertilizers, NPK (19:19:19), nano NPK (19:19:19) and nano boron applied as alone and combinations. Results revealed that application of conventional fertilizers as per recommended dose along with foliar application of nano (19:19:19) N P K @ 0.2% at 30 DAS and 60 DAS + nano boron @ 0.2% at ray floret opening stage (T7) recorded higher capitulum weight (63.30 and 62.63 g), total number of seeds per capitulum (1102 and 1068), seed yield (1961 and 1915 kg/ha) and stalk yield (4193 and 3918 kg/ha) during both the years and was statistically on par with the treatment - Conventional fertilizers 50% as per Recommended dose + nano (19:19:19) N P K @ 0.2% as foliar spray at 30 DAS and 60 DAS + + nano boron @ 0.2% at ray floret opening stage. Absolute control recorded significantly lower seed yield (758 and 710 kg/ ha) and stalk yield (1684 and 1702 kg/ ha) as compared to all other treatments.

Item Type:	Article
Divisions:	Global Research Program - Resilient Farm and Food Systems
CRP:	UNSPECIFIED
Uncontrolled Keywords:	Sunflower, foliar application, nano boron, yield attributes, capitulum weight, seed and stalk yield
Subjects:	Others > Crop Yield
Depositing User:	Mr Nagaraju T
Date Deposited:	16 Jun 2025 09:26
Last Modified:	16 Jun 2025 09:26
URI:	http://oar.icrisat.org/id/eprint/13161
Official URL:	https://www.thepharmajournal.com/archives/2023/vol...
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	We acknowledge the financial support of CII-SERB prime ministers fellowship scheme & Tulasi seeds Pvt. Ltd (Guntur), Andhra Pradesh in order to carry out this high end research. We are grateful to Dr. Prasad Kamdi, watershed manager, IDC-ICRISAT for the wonderful assistance provided during this study.
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