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IIT Mandi Researchers Develop Smart Biogradable Microgels To Aid Sustainable Farming Practices

According to officials, modern agriculture relies heavily on application of various agrochemicals such as insecticides, herbicides, and fertilizers on crops to meet the demand of food for the growing population

IIT Mandi Researchers Develop Smart Biogradable Microgels To Aid Sustainable Farming Practices
The main objective of this research is to develop sustainable farming practices that can minimise the adverse environmental impact of currently prevalent agricultural practices involving excessive use of agrochemicals

New Delhi: Researchers at the Indian Institute of Technology (IIT), Mandi have developed smart biodegradable microgels to make agricultural practices more sustainable and minimise adverse impact caused by use of insecticides and agrochemicals. The research has been published in the “Carbohydrate Polymers” journal.

According to officials, modern agriculture relies heavily on application of various agrochemicals such as insecticides, herbicides, and fertilizers on crops to meet the demand of food for the growing population. Garima Agrawal, Assistant Professor, School of Chemical Sciences, IIT Mandi told PTI,

These agrochemicals are excessively used in the fields to compensate their loss via leaching, degradation, rain fall, evaporation, dust drift etc. The frequent use of such agrochemicals results in high cost and causes adverse effect on environment, including both groundwater and soil and human health. The main objective of this research is to develop sustainable farming practices that can minimise the adverse environmental impact of currently prevalent agricultural practices involving excessive use of agrochemicals. These chemicals when frequently applied to the fields, affect the quality of the soil. Additionally, these excessive agrochemicals slowly percolate through the soil and contaminate the groundwater also

Ms. Agrawal explained that these agrochemicals also get washed away in rain and reach the nearby water sources like lake, river or stream and pollute it. The use of biodegradable microgels as a smart delivery system for fertilizers and insecticides has the potential to provide a solution to this issue.

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The team has developed natural polymer based multi-functional smart microgels for both insecticide and nutrient delivery.

These are environment friendly due to their biodegradable and stimuli responsive feature allowing the sustained release of loaded agrochemicals for a longer period. These redox-sensitive chitosan-based microgels can release their contents in response to changes in the surrounding environment. These microgels are also biodegradable, ensuring that they would break down over time and not pollute the environment. Ms. Agarwal further said,

The developed microgels have high loading capacity for insecticide and nutrient which in turn could be released in time dependent manner by taking the advantage of stimuli responsive feature of microgels. Developed microgels have excellent foliar adhesion and are biocompatible in nature

The researchers investigated the developed formulation with pea plants and the results exhibited no adverse effect on seed germination and plant elongation, thus making them an attractive option for agriculture application.

To test the efficacy of the microgels, the team loaded them with a model insecticide and investigated its release over time. They found that the microgels were able to release the loaded insecticide over a period of several days, providing a sustained release that could reduce the need for frequent applications of insecticide. She added,

The microgels are also able to improve the uptake of nutrients by plants, suggesting that the use of redox-sensitive chitosan-based microgels could have significant benefits for sustainable agriculture practices. The microgels formulation is biocompatible, and biodegradable due to the use of natural polymer chitosan in its synthesis

Also Read: How These Safai Sathis Are Saving Himalayas From Becoming Garbage Mountains

(This story has not been edited by NDTV staff and is published from a syndicated feed.)

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