Exploring The Green Potential Allelopathic Effect of Callistemon viminalis and Murraya koenigii Extracts On Crop Germination and Weed Suppression

Abstract

The study delves into the charming realm of allelopathy the phenomena when plants emit chemicals into their surroundings which could have an impact on overall development of neighbouring plants. Specifically, this research investigates the effect of allelopathy on sprouting, and growth of two cash crops, wheat (Triticum aestivum) and chickpea (Cicer arietinum) when they are treated with water based extracts made from the leaves of Callistemon viminalis and Murraya koenigii. Furthermore, the research explores the influence of these extracts on the survival and maturation of four associated weed species: Anagallis arvensis, Lepidium didymum, Poa annua, and Vicia sativa. newlineThe research layout changed into meticulous, employing a complete randomization (CRD) with a factorial format, and every experiment changed into meticulously replicated three instances to ensure strong and reliable effects. To analyse the allelopathic activity of donor plants species firstly the aqueous extract of plant leaves was prepared and tested for presence of phytochemicals. Then, two key experiments have been conducted. In the 1st (petri-plate) experiment, the impact of water based extracts of C. viminalis and M. koenigii leaves which were prepared at temperatures ranging 20°C 100°C at varying concentrations (2%, 4%, 6%, 8%, and 10%) on the sprouting and seedling growth of chickpea and wheat. Intriguingly, the findings revealed that these extracts significantly influenced propensity to germinate, as well as plumule and radicle lengths of both chickpea and wheat. Importantly, the extracts exhibited their most favourable results when applied at concentrations below 6% for the 20°C aqueous extract. The second (pot) experiment ventured into the impact of these aqueous extracts when intermixed into the soil at varied concentrations (1%, 2%, 3%, 4%, and 5%). The cognizance changed into on the morphological growth of essential cash vegetation, chickpea and wheat, and the survival of the aforementioned four weed species. Notably, the morphological