Arkansas CCA Exam Questions with accurate answers, rated A+

Document Content and Description Below

Arkansas CCA Exam Questions with accurate answers, rated A+ Which is not a self pollinating crop? - ✔✔-Corn is a cross pollinating crop ` When you drain a flooded rice field what happens to P ... uptake? - ✔✔-Phosphorous becomes more available as water removes P from soil colloids moving it to soil solution The higher clay content the higher chances the P is attached back to soil colloids when water is removed Rice uses DD50 and Cotton uses DD60, what does the 50 and 60 represent? - ✔✔-The 50 and 60 represent the lowest and highest temp that the crop will grow and have a degree day. What are the advantages of defoliating cotton early - ✔✔-Reduces stained bolls and plant trash stops the plant from growing so that bolls are not shed for vegetative growth quicker and more efficient picker functions reduces risk of boll rot When is rice considered dry - ✔✔-12% When is the optimum time to plant rice - ✔✔-when soil is 60 degrees at 4" depth. How deep do you plant rice - ✔✔-1/4 to 1.5" deep When is the optimum time to plant cotton - ✔✔-When mid morning soil temps of 68 degrees at the depth of planting with 5 days of favorable weather after planting When is the optimum time for planting soybeans - ✔✔-When ground temp is 55 degrees at 2" deep by 9am for 3 days How deep do you plant soybeans? - ✔✔-1-1.5" deep Red banded stinkbug - ✔✔-Has large spine between the legs. Some have two black dots on the middle of their body Red shoulder stinkbug - ✔✔-Have red markings that differentiate them from green stinkbugs. Do not have a spine between legs What hormone is usually applied to rice seed - ✔✔-Gibberellic Acid Crop and weed outcrossing occurs between which crop and weed - ✔✔-Rice and Red rice Calculate PLS - ✔✔-%purity X %germ = PLS When does fall panicum most compete with rice - ✔✔-when rice is tillering When does barnyard grass most compete with rice - ✔✔-when rice is at tiller stage What is the ligule on grass - ✔✔-clear membrane that is between the main stem and the leaf sheath What is panicale blight - ✔✔-Seed borne disease that does not show up until heading. White or grey heads that are blanks emerge from the boot, can also kill seedlings What is wheat vernalization - ✔✔-Changes a plant from winter to spring growth pattern Which season can pH increase or decrease by 1 point - ✔✔-Fall to winter decrease by 1 point Prilled lime vs Ag lime - ✔✔-Prilled lime uses less material and is easier to spread. It also does not have to be tilled in but takes longer to breakdown. Used in fall/winter Ag lime is spread as a dust and raises pH faster. Applied in spring before planting How do you lower soil pH - ✔✔-will decrease if a process or practice add hydrogen ions. Use of ammonia fertilizers produce hydrogen ions during the first step of nitrification (conversion of ammonium to nitrate) urea, ammonium nitrate, and ammonium sulfate What crop is non GMO - ✔✔-Clearfield rice What are excluder soybeans - ✔✔-They do not take up salts or chlorine. Good for fields with high salt levels What are includer soybeans - ✔✔-Take up salts and chlorine. Can cause stunting and yellowing at the growing point and leaves if planted in a field with high slat levels What fertilizer would best supply a season long crop - ✔✔-anhydrous ammonium How many gallons are in one acre inch of water - ✔✔-27,154 gallons What is barley yellow dwarf - ✔✔-can be confused with other things such as nutrient deficiencies and other diseases. Spread by aphids feeding on an infected plant and then moving to feed on a non infected plant thus spreading the disease Prefers cool wet seasons Which is not a useful measure of asian rust - ✔✔-Plant resistant varieties ( there are no resistant varieties) What is the primary purpose of liming - ✔✔-To replace hydrogen and aluminum ions (acidity) with calcium on exchange sites. Ca in lime removes H+ and Al+ from exchange s [Show More]

Last updated: 2 years ago

Preview 1 out of 5 pages