CCA EXAM International Exam| Questions with 100% Verified Solutions

CCA EXAM International Exam| Questions with 100% Verified Solutions Transgenic crops contain___________. a. genes from another organisms b. altered genes from the same species c. untransformed genes d. all of the above - ANSWER -d. all of the above Which of the following is a characteristic of a well designed field trial? a. replicated strips b. replicated strips c. higher than normal fertilizer rates d. irrigation of typically dry cropland - ANSWER -b. replicated strips GMO's include _____________. a. transgenic crops b. mutated crops by radiation c. natural mutation d. all of the above - ANSWER -d. all of the above Which of the following is not usually found on a seed information tag? a. seed size b. pure seed percentage c. other crop seed percentage d. germination percentage - ANSWER -a. seed size Seed quality is usually highest for seed stored under _______________. a. low temp and humidity b. low temp and light c. low temp and oxygen d. low temp and nitrogen - ANSWER -a. low temp and humidity Which of the following is a limitation of seed treatment. a. more seedling disease b. less symbiotic N fixation c. cost d. higher germination percentage - ANSWER -c. cost Storage in a _____ likely decreases bacterial inoculum viability the most. a. pesticide shed b. refrigerator c. cool, dry building d. dealer show room - ANSWER -a. pesticide shed Which of the following germ tests is best to evaluate germination under optimum conditions? a. wet towel b. dry towel c. warm d. cold - ANSWER -c. warm If pure live seed content is 90% and germination is 90% what is the % PLS a. 90 % b. 99% c. 100% d.81% - ANSWER -d.81% 0.9 * 0.9 If % pure live seed is 80% and the recommended seeding rate is 80lbs per acre, what adjusted seeding rate should be used? a. 100lbs per acre b. 64 lbs per acre c. 80 lbs per acre d. 88 lbs per acre - ANSWER -a. 100lbs per acre A benefit of using certified seed is _____. a. increase weed pressure b. stable, high yields c. no irrigation need d. reduced fertilizer needs - ANSWER -b. stable, high yields Which of the following would most likely decrease germination percentage? a. soil temp of 65 F b. oxygen concentration of 18% c. dry soil d. surface structure granular - ANSWER -c. dry soil Which of the following factors is NOT used in deterining depth of planting? a. soil texture with depth b. soil moisture with depth c. soil temp with depth d. soil aeration with depth - ANSWER -a. . soil texture with depth Which of the following factors is usually most important in determining when to plant? a. seeding rate b. soil moisture c. soil aeration d. soil ph. - ANSWER -b. soil moisture Which of the following is most likely the result of seeding a summer crop too early? a. reduced germination b. higher yield c. less seedling disease d. more lodging - ANSWER -a. reduced germination Which of the following would potentially lead to a reduced seedling rate? a. adverse weather b. no-till c. optimum soil moisture d. increased seed size - ANSWER -c. optimum soil moisture If you count 10 plants in 5 sq ft of a field at several points in that field,, what is the approximate plant population? a. 45,000 plants per acre b. 85000 plants per acre c. 125000 plants per acre d. 145000 plants per acre - ANSWER -b. 85000 plants per acre Seeding rate is __ plant population. a. always less than b. always greater than c. equal too d. less than or equal too - ANSWER -b. always greater than Advantages of starter fertilizer include _____.