Sustainable Agriculture — Crop Science Reviewer Questions

250 board-style Sustainable Agriculture 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.

250 questions in this topic · part of Crop Science · every answer explained

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Sample Sustainable Agriculture 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 Bukidnon corn farmer plans to add goats because crop residues are abundant, but household labor is already fully used during planting and harvest. Which decision best applies the farming-systems approach?
- A. Add goats only after preparing a labor calendar and confirming that feed, housing, health care, and marketing can be managed without disrupting corn operations. correct
- B. Add goats immediately because crop residues are free and therefore remove all production risk.
- C. Evaluate goat profitability separately and ignore effects on labor, manure use, and household cash flow.
- D. Replace corn entirely with goats because diversified farms should avoid crop production.
Why: Add goats only after preparing a labor calendar and confirming that feed, housing, health care, and marketing can be managed without disrupting corn operations. This is the best answer because farming-system decisions must consider interactions among enterprises, household goals, labor, capital, markets, and environmental constraints rather than optimize one component in isolation.
A farm family in Nueva Ecija wants higher income, more food for home consumption, and less exposure to rice-price fluctuations. Which plan best reflects multiple farming-system objectives?
- A. Delay all decisions until every environmental and market uncertainty disappears.
- B. Combine rice with a compatible vegetable or livestock enterprise, then assess income, food supply, labor demand, and risk across the whole farm. correct
- C. Choose the enterprise with the highest gross sales without considering household consumption or risk.
- D. Maximize rice yield alone even if production costs and debt increase sharply.
Why: Combine rice with a compatible vegetable or livestock enterprise, then assess income, food supply, labor demand, and risk across the whole farm. It fits the scenario because farming-system decisions must consider interactions among enterprises, household goals, labor, capital, markets, and environmental constraints rather than optimize one component in isolation.
An extension worker evaluates a rice-duck farm only by comparing rice yield with a rice monocrop. What important systems-level effect is most likely being missed?
- A. The color of the farm buildings.
- B. The national average price of unrelated fruit crops.
- C. The botanical classification of the rice variety.
- D. The value of duck products, pest suppression, nutrient recycling, labor demand, and changes in production risk. correct
Why: The value of duck products, pest suppression, nutrient recycling, labor demand, and changes in production risk. The option correctly applies the principle that farming-system decisions must consider interactions among enterprises, household goals, labor, capital, markets, and environmental constraints rather than optimize one component in isolation.
A coconut farmer in Quezon has land suitable for intercrops, but a short-term tenancy agreement makes the farmer uncertain about remaining until perennial intercrops bear. Which constraint should be addressed first?
- A. Seed size, because larger seeds always guarantee faster returns.
- B. Farm machinery horsepower, because all coconut intercrops require mechanization.
- C. Land-tenure security, because it directly affects willingness to invest in long-duration enterprises. correct
- D. Annual rainfall, because social and institutional constraints do not affect farming systems.
Why: Land-tenure security, because it directly affects willingness to invest in long-duration enterprises. This follows from the fact that farming-system decisions must consider interactions among enterprises, household goals, labor, capital, markets, and environmental constraints rather than optimize one component in isolation.
A family farm has enough land and water but little cash at the start of the season. In systems terms, how should capital be treated?
- A. As a fixed biological characteristic of the farm.
- B. As both a resource and a constraint whose limited quantity affects the feasible enterprise mix. correct
- C. As an output that does not influence farm decisions until harvest.
- D. As an external factor that the household cannot manage in any way.
Why: As both a resource and a constraint whose limited quantity affects the feasible enterprise mix. This is the best answer because farming-system decisions must consider interactions among enterprises, household goals, labor, capital, markets, and environmental constraints rather than optimize one component in isolation.
A municipality introduces subsidized irrigation and a guaranteed market for mungbean. A rainfed rice farmer then changes the crop sequence. Which systems principle is illustrated?
- A. A stable farming system should never change after it is established.
- B. Only biological factors can alter enterprise choice.
- C. The farming system co-evolves when objectives, resources, and external constraints change. correct
- D. Government policy affects marketing but cannot affect land-use decisions.
Why: The farming system co-evolves when objectives, resources, and external constraints change. It fits the scenario because farming-system decisions must consider interactions among enterprises, household goals, labor, capital, markets, and environmental constraints rather than optimize one component in isolation.
A farmer adopts a high-yielding vegetable variety that requires frequent pesticide spraying, but the farm is beside a fishpond that receives runoff. What is the best systems-based response?
- A. Continue spraying because vegetable yield is the only relevant farm objective.
- B. Judge the pesticide solely by its purchase price.
- C. Reassess the variety and pest-management plan by considering vegetable profit, fish health, water quality, and household safety together. correct
- D. Drain the fishpond permanently because enterprises should not interact.
Why: Reassess the variety and pest-management plan by considering vegetable profit, fish health, water quality, and household safety together. The option correctly applies the principle that farming-system decisions must consider interactions among enterprises, household goals, labor, capital, markets, and environmental constraints rather than optimize one component in isolation.
A household has one hectare, two working adults, limited credit, and a goal of steady weekly cash income. Which enterprise mix is most consistent with those endogenous conditions?
- A. A labor-intensive dairy herd requiring daily purchased feed and large capital.
- B. A large mechanized sugarcane enterprise designed for ten hectares.
- C. A manageable combination of short-cycle vegetables and a small poultry unit with staggered sales. correct
- D. A timber plantation that provides no intermediate income for many years.
Why: A manageable combination of short-cycle vegetables and a small poultry unit with staggered sales. This follows from the fact that farming-system decisions must consider interactions among enterprises, household goals, labor, capital, markets, and environmental constraints rather than optimize one component in isolation.

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Sustainable Agriculture — Crop Science Reviewer Questions

Sample Sustainable Agriculture questions with answers and explanations

A Bukidnon corn farmer plans to add goats because crop residues are abundant, but household labor is already fully used during planting and harvest. Which decision best applies the farming-systems approach?

A farm family in Nueva Ecija wants higher income, more food for home consumption, and less exposure to rice-price fluctuations. Which plan best reflects multiple farming-system objectives?

An extension worker evaluates a rice-duck farm only by comparing rice yield with a rice monocrop. What important systems-level effect is most likely being missed?

A coconut farmer in Quezon has land suitable for intercrops, but a short-term tenancy agreement makes the farmer uncertain about remaining until perennial intercrops bear. Which constraint should be addressed first?

A family farm has enough land and water but little cash at the start of the season. In systems terms, how should capital be treated?

A municipality introduces subsidized irrigation and a guaranteed market for mungbean. A rainfed rice farmer then changes the crop sequence. Which systems principle is illustrated?

A farmer adopts a high-yielding vegetable variety that requires frequent pesticide spraying, but the farm is beside a fishpond that receives runoff. What is the best systems-based response?

A household has one hectare, two working adults, limited credit, and a goal of steady weekly cash income. Which enterprise mix is most consistent with those endogenous conditions?

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