Welcome to Agriclass quizzes
- In this blog you will get weakly quizes
- Each Quizzes are base on your agriculture exam pattern
- I am definitely sure it is useful for your exam preparation
- Each quize will have 20 mcqs & 30 sec time to attempt each question
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📌HERBICIDES📌
✅A herbicide that kills only targeted plants on weeds while crops are not affected is called-Selective herbicide
Example - Atrazine, 2,4-D, Butachlor
🍂A herbicide that kill all vegetation that they come in contact is called
- Non Selective herbicide
Example of - Paraquat, Diquat
🍂A herbicide that move within the plant to effect as herbicide is called
- Systemic herbicide
🍂Example of Systemic herbicide are-Atrazine 2,4-D, propanil
🍂Pre-emergence application herbicide-Paraquat, Diquat, 2,4-D
🍂Pre Planting incorporation herbicide-Fluchloralin
🍂Example of Soil sterilenths are-
Diuron, Atrazine, Methyl bromide
🍂Effective herbicides on mono cotyledons weeds are-Delapon Fluchloalin
🍂Herbicides which have low residual toxicity- Diquat, paraquat
🍂Herbicides which have high residual toxicity- Diuron, Atrazine
🍂Weeds which derives foods directly from the host plant is called-Parasitic weeds
🌿Total stem parasite-Cuscuta
(associated with Lucerne crop)
🌿Example of Partial stem parasite-Loranthus
(associated with tree crops- mango)
🌿Example of Total root parasite-
Orabanche associated with Tobacco
🌿Example of Partial root parasite-
Striga associated with sorghum
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🌿Weeds growing in water bodies is called-Aquatic weeds Water hyacinth, hydrilla, Salvania,
cattail weeds Example of-Aquatic weeds
🌿One plant having detrimental effect on other plants by releasing root chemical through roots- Allelopathy .
You'll have 30 second to answer each MCQ.
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