Effect of Plant Hormones & Micro nutrients on Fruit Production: A Review DOI: https://doi.org/10.36811/ijpsh.2022.110038 IJPSH: August-2022: Page No: 62-90 Page: 62 www.raftpubs.com International Journal of Plant Science and Horticulture Review Article Open Access Effect of Plant Hormones & Micro nutrients on Fruit Production: A Review Ashok Kumar¹ * , BD Bhuj² and Shri Dhar 3 1 Professor Horticulture, Department of Horticulture, IIMT University, Meerut, UP, India 2 Professor Horticulture, College of Agriculture, G.B.P.U.A & T-Pant Nagar, UP, India 3 Principal Scientist, Division of Vegetable Science, Pusa Campus, New Delhi, India *Corresponding Author: Ashok Kumar, Professor Horticulture, Department of Horticulture, IIMT University, Meerut, UP, India, Tel: 7983232585, 7300511143; Email: yadavakdr@gmail.com; drkumaryadav@rediffmail.com Received Date: Aug 08, 2022 / Accepted Date: Aug 17, 2022 / Published Date: Aug 20, 2022 Abstract The plant growth regulators are chemical compounds, which can regulate some important metabolic activities in plants. They influence on growth and development of plants, which influence the increase in yield, quality of product, flowering and some other parameters. Plant growth regulators include auxins, gibberellins, cytokinin’s, ethylene, growth retardants and growth inhibitors. Production of low-quality fruits is a common experience therefore, to improve the yield and quality of fruit crops application of growth regulators is one of the important production strategy. Application of micronutrients and growth regulators applied fifteen days after fruit set was more effective in improving fruit quality as compared to thirty days after fruit set. The pomegranate plant continues to bear flowers irregularly once, twice or thrice in a year, depending upon germplasm, agro-climatic conditions and management practices. It produces a low yield of inferior quality with non-synchronized maturity. To avoid this, flower regulation is practiced to encourage prolific harvest at specific time depending upon rainfall/irrigation facilities, pests and diseases incidence and market demand. Investigated research areas - Moisture stress, plant growth regulators, nutrient and canopy management (training, pruning and thinning) are major horticultural interventions which influence flowering. Although, many studies have been conducted in different countries to induce profuse flowering with improved sex ratio, fruit set, retention and ultimately high-quality fruiting in desired season. Keywords: Growth Regulator; Micronutrient; Fruit Quality; Pomegranate Cite this article as: Ashok Kumar, BD Bhuj, Shri Dhar. 2022. Effect of Plant Hormones & Micro nutrients on Fruit Production: A Review. Int J Plant Sci Hor. 4: 62-90. Copyright: This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Copyright © 2022; Ashok Kumar Introduction Plant growth regulators or phytohormones are organic substances produced naturally in higher plants, controlling growth or other physiological functions at a site remote from its place of production and active in minute amounts. PGRs can influence plant height, leaf number, leaf area index, dry mass, chlorophyll content, photosynthetic parameters, seed yield, oil yield, nutritional status etc. Among different elite horticultural practices, growth regulators