APES Review Ag

When the productive potential of topsoil falls by 10% or more due to drought, deforestation, overgrazing, or climate change it is called:

• Salinization
• Erosion
• Desertification
• Waterlogging

Irrigation can lead to all of the following EXCEPT:

• Waterlogging
• Salinization
• Depletion of ground water
• Recharging of aquifers

Which of these is a greenhouse gas produced by domestic livestock?

• N2O
• CH4
• CO2
• SO2

Which of these is a greenhouse gas produced from the denitrification of excess nitrates in soil fertilizer often applied to crops in industrial farming?

• N2O
• CH4
• CO
• SO2

Which of the following is likely to minimize soil erosion?

• No till agriculture
• Herbicide use
• High yield crops
• irrigation

The water holding capacity of soil is LEAST likely to be affected by the addition of which of the following?

• Clay
• Humus (partially decomposed organic matter)
• Manure
• Pesticide

An integrated pest management approach to pest control emphasizes which of the following?

• Eradication of the pest population
• Reduction of crop damage to an economically tolerable level
• Monoculture planting 
• High inputs of pesticides

Which of the following would NOT be a good alternative to pesticides?

• Using insect pheromones to lure insects into traps
• Using hormones to stop larval development
• Using genetic resistance (GMO plants)
• Using green manure on the crops

One way to slow erosion is to plant crops between rows of economically viable trees.  This is called:

• agroforestry
• contour plowing
• crop rotation
• forest cropping

Which of the following is NOT a component of Organic agriculture?

• Uses no GMOs
• Uses organic, natural fertilizers
• Uses no chemical pesticides, antibiotics, or growth hormones
• Uses no fossil fuels