Soil and Agriculture Answers

Which of the following is not an agricultural technique?a.irrigationb.selective breedingc.livestock herdingd.none of the above

Field patterns are the same in all parts of the world.

What is the purpose of strip cropping?a.prevent soil erosionb.maintain nutrient levelsc.reduce plant diseased.all of the above

Which of the following is not true concerning tropical plantations? a.They are generally found in humid, tropical climates.b.Wheat and corn are common products of tropical plantations.c.Most crops from tropical plantations are exported.d.Cocoa, coffee and tea are common products of tropical plantations.

The high productivity of American agriculture is exemplified by _______.a.low crop yields per farm workerb.high crop yields per farm workerc.the small cultivated area per inhabitantd.the small cultivated area per farmer

Crop rotation is a method of soil conservation because _______.a.the land produces more than one type of cropb.it requires plowing and tilling that reduces soil compactionc.it does not use the same parcel of land in sequential seasonsd.it avoids the depletion of soil nutrients

Which of the following is the most damaging method of soil remediation?a.soil excavation and disposalb.soil aerationc.heating and vapor extractiond.microbial digestion

Which of the following best explains why soil conservation is important to human agriculture?a.Erosion prevention prevents millions of dollars in damage from mudslides.b.It is easier to prevent the degradation of old soil than it is to generate new soil.c.If the soil salinity gets too high crops will not be able to grow in it.d.Soil contamination is a hazard to human and animal health.

The same agricultural practices are used in every country of the world.

How does flooding rice fields reduce the need for herbicides and pesticides in rice farming?a.While rice has a submerged growth state, most weeds and pests do not.b.Flooding the fields causes the soil to degrade so weeds cannot take root.c.Residual herbicides and pesticides from previous seasons dissolve in the water.d.All of the above