Question 1
In a typical tropical soil profile, which horizon contains the highest concentration of organic matter, plant roots, and active biological organisms?
Correct Answer:
Horizon A (Topsoil)
Question 2
Which group of mineral elements are classified as primary macronutrients required by agricultural crops in relatively large amounts?
Correct Answer:
Nitrogen, Phosphorus, and Potassium
Question 3
A Form 6 Agriculture student notices yellowing (chlorosis) starting on the older, lower leaves of a sweet potato crop while upper young leaves remain green. Which nutrient deficiency does this indicate?
Correct Answer:
Nitrogen deficiency
Question 4
High annual rainfall in Solomon Islands often causes heavy leaching of exchangeable bases from topsoil. What effect does this leaching have on soil pH?
Correct Answer:
It makes the soil acidic (lowers soil pH)
Question 5
Why are leguminous crops such as Mucuna, Calopogonium, or peanuts frequently included in Pacific crop rotation systems?
Correct Answer:
They fix atmospheric nitrogen into the soil through symbiotic Rhizobium bacteria in root nodules
Question 1
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About this Exam

Prepare with the SINF6 Agriculture Practice Questions - Solomon Islands National Form Six Examination - Agriculture Exam practice quiz. This question bank includes 100 questions covering soil, cocoa, tropical, crops, and crop. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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SINF6 Agriculture Practice Questions - Solomon Islands National Form Six Examination - Agriculture Exam

This practice set contains 100 questions from the matching question bank and focuses on soil, cocoa, tropical, crops, and crop. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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