YA IYALAH HAMA GAK MATI MATI.❗❗❗ KESALAHAN INSEKTISIDA SISTEMIK YANG TIDAK DIPAHAMI PETANI

Summary

This video script provides an in-depth explanation of how different types of pesticides work, specifically focusing on insecticides and fungicides. The narrator discusses three primary pesticide mechanisms: contact, translaminar, and systemic action. Contact pesticides kill pests upon direct contact, while translaminar pesticides can penetrate the plant, affecting pests on both sides of the leaf. Systemic pesticides, further divided into acropetal, basipetal, and true systemic, move through the plant and provide comprehensive protection. The video emphasizes the importance of correct application to optimize pesticide effectiveness and avoid wastage.

Takeaways

• 😀 Insecticides and fungicides work in different ways: they can be contact-based, translaminar, or systemic.
• 😀 Contact pesticides kill pests when they come into contact with them, either by ingestion, inhalation, or skin absorption.
• 😀 Translaminar pesticides have the ability to penetrate a plant’s leaf, spreading from the top to the bottom, protecting the entire leaf.
• 😀 A translaminar pesticide doesn’t require spraying both sides of a leaf. Spraying the top is enough for it to spread to the bottom.
• 😀 Systemic pesticides can be absorbed by plants and spread throughout, with three types: acropetal, basipetal, and true systemic.
• 😀 Acropetal systemic pesticides move upward in a plant. When sprayed on the bottom, they’ll move to the top of the plant.
• 😀 If systemic pesticides are applied to the roots or stems, they can travel upward to the leaves and branches, providing protection.
• 😀 Basipetal systemic pesticides move downward through the plant, targeting the roots. Herbicides often use this mechanism.
• 😀 True systemic pesticides provide both acropetal and basipetal action, working in both upward and downward directions.
• 😀 For effective pesticide application, it is important to focus on spraying the appropriate plant parts, such as the top for translaminar and acropetal, and the bottom for basipetal.
• 😀 Applying pesticides in excess can be wasteful, especially if not applied correctly to target areas, like focusing on wetting only the necessary parts of the plant.

Q & A

What is the working mechanism of pesticides like insecticides and fungicides?

Pesticides, such as insecticides and fungicides, work in different ways. They can be categorized as contact, translaminar, and systemic. Contact pesticides kill pests when they come into direct contact with the pesticide. Translaminar pesticides penetrate through plant tissue, affecting pests on both the upper and lower surfaces of leaves. Systemic pesticides are absorbed by plants and travel through them, reaching pests inside the plant.

What does 'contact pesticide' mean?

A contact pesticide works by killing pests when they physically come into contact with it. This can happen when the pest touches the treated surface or when it consumes the pesticide via plant tissues, such as leaves.

What is the difference between translaminar and systemic pesticides?

Translaminar pesticides are semi-systemic, meaning they can pass through plant leaves from the upper to the lower surfaces. Systemic pesticides, on the other hand, are absorbed by the plant and transported throughout its system, reaching pests that are inside the plant, such as stem or root-dwelling pests.

How does a translaminar pesticide work?

A translaminar pesticide is absorbed through the upper side of a leaf and then moves downwards, reaching the lower leaf surfaces and affecting pests hiding there. This allows for more effective control, even if only the upper part of the plant is sprayed.

Can translaminar pesticides be applied only to the top of the leaves?

Yes, translaminar pesticides can be applied to just the top of the leaves, as they will eventually move through the leaf tissue to reach the underside, where pests might be hiding.

What is systemic pesticide, and how does it function?

Systemic pesticides are absorbed by the plant and move through its vascular system, reaching all parts of the plant, including the leaves, stems, and roots. They kill pests that consume or come into contact with the treated plant tissue.

What is an example of a systemic pesticide with an 'acropetal' movement?

An example of a systemic pesticide with acropetal movement is imidacloprid. This pesticide, when applied to the base of the plant, is absorbed by the roots and moves upwards through the plant, reaching the upper leaves and other parts.

What does 'basipetal' movement in systemic pesticides mean?

Basipetal movement refers to the downward movement of pesticides within the plant. For example, when a basipetal pesticide is applied to the top of a plant, it will move down through the plant tissues to the roots, affecting the plant from top to bottom.

How can a systemic pesticide with basipetal movement be applied effectively?

For a basipetal systemic pesticide, it is important to apply the pesticide to the upper parts of the plant, as it will move downwards to the roots. There is no need to apply it directly to the roots.

What is a 'true systemic' pesticide?

A true systemic pesticide is one that has both acropetal and basipetal actions, meaning it can move upwards and downwards within the plant. This provides comprehensive protection for both above-ground and below-ground pests.