Question:
The combined effect of alleo chemical and competition of weed with crop, is known as
The combined effect of alleo chemical and competition of weed with crop, is known as
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Remember the formula:
$\text{Interference} = \text{Competition} + \text{Allelopathy}$.
This is the standard terminology used in Weed Science to describe the total impact of weeds on crops.
$\text{Interference} = \text{Competition} + \text{Allelopathy}$.
This is the standard terminology used in Weed Science to describe the total impact of weeds on crops.
Updated On: Aug 7, 2026
- Interference
- Suppressed weed growth
- Allelopathy
- Hindrance
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The Correct Option is A
Solution and Explanation
Step 1: Understanding the Concept:
The biological relationship between weeds and crops involves physical competition for environmental resources and biochemical interactions.
The overall detrimental effect that weeds exert on crop plants is a combination of these two mechanisms.
Step 2: Detailed Explanation:
The interaction between weeds and crops includes:
1. Competition: The physical struggle for shared, limited resources such as soil moisture, mineral nutrients, solar radiation, and space.
2. Allelopathy: The chemical inhibition of one plant by another through the release of toxic metabolites (allelochemicals) into the environment.
These chemicals can be released through volatilization, root exudation, leaf leaching, or decomposition of residues.
The total biological effect resulting from both physical resource competition and chemical allelopathy is termed Interference.
It represents the overall negative impact that weeds have on crop growth and yield.
Step 3: Final Answer:
The combined effect of allelochemicals and weed competition is defined as Interference, which corresponds to Option (A).
The biological relationship between weeds and crops involves physical competition for environmental resources and biochemical interactions.
The overall detrimental effect that weeds exert on crop plants is a combination of these two mechanisms.
Step 2: Detailed Explanation:
The interaction between weeds and crops includes:
1. Competition: The physical struggle for shared, limited resources such as soil moisture, mineral nutrients, solar radiation, and space.
2. Allelopathy: The chemical inhibition of one plant by another through the release of toxic metabolites (allelochemicals) into the environment.
These chemicals can be released through volatilization, root exudation, leaf leaching, or decomposition of residues.
The total biological effect resulting from both physical resource competition and chemical allelopathy is termed Interference.
It represents the overall negative impact that weeds have on crop growth and yield.
Step 3: Final Answer:
The combined effect of allelochemicals and weed competition is defined as Interference, which corresponds to Option (A).
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