From Killing to Coexisting: Why Repellency Matters

By admin In Uncategorized

13

Jan
2025

Introduction

Every living organism serves a unique purpose, contributing to the intricate web of life in nature. Insects, often overlooked or dismissed as nuisances, are no exception. While some insects are beneficial, others may be labelled as pests, primarily for causing discomfort to humans or damage to crops. However, insects are integral to maintaining a complex ecosystem that supports life on the earth. Surprisingly, less than 1% of all known insect species are classified as pests.
The majority of insects perform essential roles that sustain life. They pollinate plants, aerate the soil, and recycle organic matter, turning dead animals and plants into nutrients for the earth. These tiny creatures are the hidden workforce of nature, ensuring the smooth functioning of ecosystems worldwide.

The biodiversity of life on Earth thrives on interrelation. Insects form the backbone of balance in ecosystems that benefit humans, plants, and animals alike. Their activities often go unnoticed, but their impact is profound. Pollination is one of the most recognised contributions of insects. Bees, butterflies, beetles, and other pollinators travel from flower to flower, transferring pollen. This seemingly simple act is the foundation of plant reproduction, enabling the growth of fruits, vegetables, and other crops we rely on. The global food supply would be severely compromised without these pollinators.
Insects, not only pollinate but play a vital role in the growth of the environment. Consider thrips—commonly regarded as agricultural pests. These small yet impactful insects help maintain ecological balance by feeding selectively on dominant plant species. This action reduces their prevalence, enabling less competitive plants to thrive. Thrips strengthen ecosystems against environmental changes by fostering biodiversity. Beyond this, insects play numerous indispensable roles in maintaining healthy ecosystems:
  1.  Pest Control
    Nature has its pest control system. Predatory insects like ladybugs, lacewings, and certain species of thrips help regulate harmful pest populations, including aphids, caterpillars, and mites. By keeping pest populations in check, these predators reduce the need for chemical pesticides. This not only supports sustainable farming practices but also protects the environment from harmful chemicals.
  2.  Pollination
    Thrips, along with bees, butterflies, and other pollinators, ensure the reproduction of flowering plants. This process sustains biodiversity and ensures stable food crop yields, which are critical for agriculture and global food security. It’s estimated that about 75% of all crop species rely on insect pollination, contributing to one-third of the food we consume.
  3. Soil Health
    Decomposers like beetles, ants, and other insects actively break down organic matter, such as fallen leaves, dead plants, and animal remains. This decomposition process enriches the soil with nutrients, enhancing its fertility and structure. Healthy soil is essential for robust plant growth which supports entire ecosystems.
  4. Nutrient Cycling
    Insects play a key role in the nutrient cycle by feeding on and decomposing organic material. They transform it into simpler compounds that plants and microorganisms can absorb. This continuous recycling process ensures the productivity of ecosystems and supports plant life.
  5. Seed Dispersal
    Some insects, like certain ants, contribute to seed dispersal by carrying seeds to new locations. Others facilitate this process through activities such as burrowing. Seed dispersal helps plants colonise new areas, maintain genetic diversity, and recover from environmental disturbances like wildfires or deforestation.
  6. Enhancing Growth Diversity
    Insects like thrips promote the growth of less competitive species by feeding  selectively on dominant plants. This interaction leads to diverse plant communities, which are more resilient to environmental stresses such as droughts and temperature fluctuations.
  7. Promoting Ecosystem Balance
    Insects serve as prey for birds, amphibians, reptiles, and other animals. Their presence ensures energy flows efficiently across various levels of the food chain
    (Ref. Fig.1). For instance, small birds like chickadees rely heavily on insects to feed their young. These birds, in turn, are preyed upon by larger predators, demonstrating the interrelation of life.
Fig 1: The Soil Food Web
The alarming decline in insect populations poses a serious threat to ecosystems and biodiversity. Insects pollinate plants, recycle nutrients, and are food for countless animals. Their absence creates ripple effects throughout the natural world. A reduction in insect population has direct consequences on human life. Reduced pollination leads to lower yields of essential crops such as fruits, vegetables & nuts thereby driving up food prices & threatening availability. Moreover, increased use of pesticides results in loss of insects, endangers biodiversity & further compromises food security.
  • Pollination Loss: A decline in pollinators like bees and butterflies reduces crop yields, jeopardizing global food security.
  • Slower Nutrient Cycling: Without decomposers, organic matter takes longer to break down, impacting soil fertility and plant growth.
  • Food Chain Disruption: Predators such as birds and amphibians lose critical food sources, destabilizing ecosystems.
  • Pest Surges: Without natural predators, harmful pest populations may explode, increasing reliance on chemical pesticides.

Harmful Effects of Pesticides

Farmers and agricultural workers widely use pesticides to control pests. Use of pesticide comes with hidden losses that often outweigh their immediate benefits. These chemicals can harm beneficial insects along with harmful ones, disrupting the ecological balance, shown in detail in Fig. 2
  • Resistance Development: Over time, pests develope resistance to pesticides, necessitating stronger and more toxic alternatives.
  • Environmental contamination: Pesticides can pollute soil and waterways, harming aquatic life and potentially affecting human health.
  • Biodiversity Loss: Non-target species, including pollinators and natural pest predators, are often collateral damage.

Such effects highlight the need for more sustainable approaches to pest management, such as integrated pest management (IPM). IPM is an ecofriendly approach that uses techniques like natural predators, crop rotation, and targeted pesticides. (Ref. Fig. 3) It balances pest control with environmental preservation and cost-effectiveness

Fig 3: Integrated Pest Management

Repellency Is a Better Alternative than Cidal Products

In Pest Management, the choice between repellency-based and cidal (killing) products impacts biodiversity and agricultural sustainability. Repellency-based pest management focuses on deterring pests. Cidal products eliminate them while disrupting the environment. However, Cidal products are used for higher yields and better crop production. Chemicals used in Cidal products also harm beneficial species and destabilise the ecosystem.
A repellency-based pest management approach safeguards non-target species like pollinators and natural predators, promoting biodiversity and ecological balance. Additionally, Repellents reduce the risk of pests developing resistance, a growing challenge with Cidal solutions. By offering long-term effectiveness with minimal environmental harm, repellency-based products emerge as a sustainable choice for modern agriculture.

Repellency for a Sustainable Future

NICHEM Solutions is pioneering the shift toward sustainable pest management with innovative pest-repellent technologies like Defyer and BackOff. NICHEM provides effective and eco-friendly pest management solutions which are beneficial for insect population. These solutions reduce harmful chemical reliance, protect beneficial insect species, and preserve soil fertility. By safeguarding biodiversity and promoting ecological balance, NICHEM empowers farmers to achieve long-term agricultural productivity. Embracing repellence-based approach is not just a choice but a necessity for creating a future where humans and insects thrive together in harmony.

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