Explanation

• Mines and fisheries are natural resources that reduce output per unit when overused.
• Diminishing returns occur when each additional input produces less than the previous one.
• This principle helps manage extraction and prevent resource depletion.

Last verified on 03-02-2026

Explanation

• Modern agriculture in Pakistan relies on advanced techniques and irrigation systems.
• Traditional or rain-fed methods alone cannot meet food demand.
• Efficient water use, mechanization, and high-yield crops are essential for sustainability.

Explanation

• Net return per hectare measures the total profit a farmer earns from one hectare of land.
• It reflects the overall efficiency of land use, crop management, and inputs.
• Higher net return indicates better resource utilization and farm productivity.

Last verified on 03-02-2026

Explanation

• Sub-economic holding refers to land too small to support a family or generate sufficient income.
• Farmers with such land cannot practice commercial farming effectively.
• Common in densely populated agricultural regions.

Last verified on 03-02-2026

Explanation

• These are different systems or methods of organizing agricultural production.
• They define how land, labor, and resources are managed for farming.
• Each system has unique ownership, management, and production strategies.

Last verified on 03-02-2026

Explanation

• Farm accounting applies standard accounting principles to agricultural businesses.
• It tracks income, expenses, and profits from farm operations.
• Helps farmers make informed financial decisions and manage resources efficiently.

Last verified on 03-02-2026

Explanation

• Monocropping means growing the same crop on the same land year after year.
• Common in modern agriculture for crops like wheat, rice, or sugarcane.
• While it simplifies farming, it can reduce soil fertility and increase pests.

Last verified on 03-02-2026

Explanation

• Candal & Tower disease are viral diseases of sugarcane.
• They reduce sugar content and crop yield.
• Transmitted by insects like mealybugs and aphids.
• Managing these diseases is essential for healthy sugarcane production.

Last verified on 03-02-2026

Explanation

• Latest pesticides are developed to control insects, weeds, and plant diseases.
• They protect crops and increase yield.
• Modern pesticides are more targeted and efficient.
• Their main purpose is pest control.

Last verified on 03-02-2026

Explanation

• Gram blight is a fungal disease affecting gram (chickpea) plants.
• Caused by Ascochyta rabiei (Ascochyta blight).
• Leads to leaf spots, stem lesions, and pod damage, reducing yield.
• Occurs mainly in cool and wet climates.
• Managed by resistant varieties, crop rotation, and fungicides.

Last verified on 22-01-2026