Annual and Perennial Crops — Crop Science Reviewer Questions

400 board-style Annual and Perennial Crops items for the Agriculturist Licensure Examination, free and open to every examinee. Biotechnology and current-news items reward recognition rather than derivation. Work them in short, frequent sittings and keep the longer sessions for physiology.

400 built-in questions in this topic · approved additions may publish live · part of Crop Science

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Sample Annual and Perennial Crops questions with answers and explanations

Board-style items taken from the Crop Science bank. Every answer is explained, which is the part that makes a review question worth doing twice.

A farmer in Bukidnon is choosing between a shallow stony upland and a deep, well-drained loam for a new corn field. Which site is the better initial choice if both have similar access to market?
- A. The site with the poorest drainage
- B. The site with the steepest slope
- C. The shallow stony upland
- D. The deep, well-drained loam correct
Why: Corn generally performs better where rooting depth, drainage, and soil tilth permit good root development and nutrient uptake.
A low-lying field remains submerged for much of the rainy season. Which crop choice best matches the site's hydrologic condition?
- A. Upland corn
- B. Peanut
- C. Lowland rice correct
- D. Onion
Why: Rice is adapted to flooded or submerged production systems, while the other choices require better aeration and drainage.
A coastal farm is exposed to saline irrigation water during the dry season. Before recommending a crop variety, which information is most important to verify?
- A. The variety's salinity tolerance under local conditions correct
- B. The farmer's preferred planting day
- C. The seed bag color
- D. The crop's national average yield only
Why: Site-specific stress tolerance is more relevant than general yield because salinity can strongly alter genotype performance.
A vegetable grower wants to establish white potato in a hot lowland site. Which management decision most directly addresses the crop–site mismatch?
- A. Apply more nitrogen regardless of temperature
- B. Move production to a cooler high-elevation site or cool-season window correct
- C. Increase seeding rate without changing site
- D. Reduce row spacing to create competition
Why: Cool-season crops perform best where temperatures are lower; changing site or season addresses the dominant limiting factor.
A farm is on a 20% slope with intense monsoon rainfall. Which site-management plan best reduces erosion risk before crop establishment?
- A. Plow directly up-and-down slope
- B. Concentrate runoff into unprotected furrows downslope
- C. Leave soil bare between rows
- D. Lay out rows along the contour and maintain protective ground cover correct
Why: Contour-oriented operations and soil cover slow runoff and reduce soil loss on sloping land.
Two candidate farms have similar soils, but Farm A is 2 km from a paved road while Farm B requires expensive hauling over 20 km. For a highly perishable vegetable, which factor makes Farm A more suitable?
- A. More difficult product handling
- B. Lower transport time and marketing cost correct
- C. Greater distance from buyers
- D. Higher number of neighboring houses
Why: For perishable crops, market access and transport infrastructure strongly affect losses, quality, and profitability.
A barangay plans a new irrigated rice area. Soil and climate are suitable, but the watershed cannot reliably supply water in the dry season. What should planners do first?
- A. Select only taller rice plants
- B. Plant the full area and assume rainfall will compensate
- C. Increase fertilizer rate to replace irrigation
- D. Match the cropping calendar and area planted to dependable water supply correct
Why: Water-resource status is a primary site-selection constraint and should determine feasible area and season.
A farmer has an acidic field at pH 4.7 and wants to plant pineapple. Which interpretation is most appropriate?
- A. Only flooded crops can use the field at this pH
- B. pH alone guarantees high yield
- C. The crop cannot grow below pH 7.0
- D. The site may be suitable because pineapple tolerates relatively acidic soils, but other soil constraints should still be checked correct
Why: Crop adaptation is multi-factorial; acid tolerance can make pineapple suitable, but fertility, drainage, and other constraints still matter.

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Annual and Perennial Crops — Crop Science Reviewer Questions

Sample Annual and Perennial Crops questions with answers and explanations

A farmer in Bukidnon is choosing between a shallow stony upland and a deep, well-drained loam for a new corn field. Which site is the better initial choice if both have similar access to market?

A low-lying field remains submerged for much of the rainy season. Which crop choice best matches the site's hydrologic condition?

A coastal farm is exposed to saline irrigation water during the dry season. Before recommending a crop variety, which information is most important to verify?

A vegetable grower wants to establish white potato in a hot lowland site. Which management decision most directly addresses the crop–site mismatch?

A farm is on a 20% slope with intense monsoon rainfall. Which site-management plan best reduces erosion risk before crop establishment?

Two candidate farms have similar soils, but Farm A is 2 km from a paved road while Farm B requires expensive hauling over 20 km. For a highly perishable vegetable, which factor makes Farm A more suitable?

A barangay plans a new irrigated rice area. Soil and climate are suitable, but the watershed cannot reliably supply water in the dry season. What should planners do first?

A farmer has an acidic field at pH 4.7 and wants to plant pineapple. Which interpretation is most appropriate?

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