2008 AGRONOMY KSCDE



2013 AGRONOMY KANSAS FFA CDEAGRONOMIC QUIZContestant No. Contestant Name________________________ Score________ WRITE ANSWERS ON BLANKS USING CAPITAL LETTERS – (4 points each)A___ 1.Which of the following Kansas crops is used as grain for human food or livestock feed, plus it is commonly used to produce oil, high fructose sweetener, biofuel (ethanol), silage, and industrial products such as biodegradable trash bags and packing peanuts?A) corn B) alfalfa C) wheat D) sunflower E) soybeanE 2.A crop planted to protect the soil from erosion, add nitrogen to the soil (if a legume is used), and “trap” nutrients to reduce losses during the time between two crop seasons is called a: A) fallow crop B) intercrop C) pulse crop D) companion crop E) cover cropD 3.Which of the following conditions would not likely be a result of using a no-till system that leaves crop residue on the soil surface versus incorporating the residue with tillage? A) more water infiltration B) cooler soil temperatureC) less soil moisture loss by evaporation D) less overwintering of insect and disease pests E) less wind and water erosionD___ 4. Which of the following is a livestock health problem that is most likely to occur with cattle grazing lush growing, cool season pastures (fescue, bromegrass, wheat) with low magnesium levels in the forage? Symptoms start with staggers and may terminate with convulsions, coma, and death. fescue toxicosis prussic acid poisoning nitrate toxicity grass tetany alkaloid poisoningA___ 5. Both corn and sorghum growing under drought stress may accumulate toxic levels of which of the following substances, especially in the lower part of the stems? It is more likely when high rates of N fertilizer or manure have been applied. It may also still be present at toxic levels in silage or hay made from affected plants. A) nitrate B) Salmonella C) aflatoxin D) vomitoxin E) E. coli C___ 6. Which of the following acids is formed in good quality silage and gives the silage its distinctsweet smell.A) acetic acid B) prussic acid C) lactic acid D) propionic acid E) butyric acidB 7.The standard weight per bushel for canola is:A) 32 pounds B) 50 pounds C) 56 pounds D) 60 pounds E) 100 poundsD 8.Because most soybean varieties grown in Kansas continue to produce more leaves and stems after they begin flowering, their growth habit is called:A) dioecious B) monoecious C) biennial D) indeterminate E) determinate C 9.Application of a starter fertilizer placed below and beside the seed with a fertilizer unit on a row crop planter while planting sunflowers is called:A) sidedressing B) topdressing C) banding D) broadcasting E) foliar application B___10.Which of the following phosphorus fertilizer carriers is a liquid? Monoammonium Phosphate – MAP (11-52-0) Ammonium Polyphosphate – APP (10-34-0) Triple Superphosphate – TSP (0-46-0) Diammonium Phosphate – DAP (18-46-0) All of the above are liquid carriersE 11.Corn rootworms cause damage to corn by:A) feeding on the roots during both the larval and the adult stageB) feeding on the roots during the larval stage and feeding in the stalks during the adult stage C) feeding on the roots during the adult stage and feeding on the stalks during the larval stageD) feeding in the roots during the larval stage and feeding on the silks during the adult stageE) feeding in the stalks during the larval stage and feeding on the silks during the adult stage C___12.The stages of the life cycle of an alfalfa weevil with complete metamorphosis are: egg, adult egg, nymph, adult egg, larvae, pupae, adult larvae, nymph, pupae, adult egg, larvae, adultC___13.A crop consultant finds a lot of aphid “mummies” when scouting for aphids on alfalfa. Theseaphid mummies are evidence of biological control by:A) lace wings B) lady bugs C) parasitic wasps D) predator mites E) Bt bacteriaC 14.Soybean varieties adapted to Kansas are commonly in maturity groups:A) 00, 0, I B) I, II, III C) III, IV, V D ) V, VI, VII E) all of the above varieties are adapted, but they just have to be planted at different times B___15.The term "inoculated seed" when used in soybean production refers to:A) seed treated with a fungicide to prevent seedling diseasesB) seed treated with nitrogen fixing bacteria to insure nitrogen fixationC) seed treated with a chemical to protect the seedlings from herbicide injuryD) seed treated with an insecticide to prevent wireworm damage in the soilE) inoculated soybean seed would include treatment for all of the above D___16.Which of the following is the most important cool season, introduced, perennial forage grass crop grown primarily in Eastern Kansas for pasture and hay?A) alfalfa B) big bluestem C) bermudagrass D) tall fescue E) sudangrassC___17. “Yellowberry” in hard red winter wheat seed is an indicator of: wheat scab disease infection excess moisture, above the 14% level required for safe storage low protein, below the normal level of about 12% high test weight, above the normal level of about 60 pounds per bushel heavy feeding by greenbugs during the vegetative growth periodB___18.Which of the following is an advantage of center pivot sprinkler over furrow irrigation? less evaporation loss with sprinkler more uniform application of water with sprinkler less energy required to pump and distribute water with sprinkler lower equipment maintenance costs with sprinkler all of the aboveC___19. A material added to a spray mixture to increase spreading or retention of the spray solution on plant leaves is called the:A) active ingredient B) inert ingredient C) surfactant D) carrier E) formulationD___20. Which set of conditions would result in the greatest amount of spray drift? low boom height, low pressure, and small nozzle sizelow boom height, high pressure, and large nozzle sizehigh boom height, low pressure, and large nozzle sizehigh boom height, high pressure, and small nozzle sizehigh boom height, low pressure, and small nozzle sizeD 21.The greatest yield reduction due to drought stress in grain sorghum generally results when the stress occurs during the:A) seedling emergence stage resulting in poor standsB) vegetative stage resulting in less tilleringC) growing point differentiation stage resulting in fewer heads initiatedD) boot stage resulting in poor head emergenceE) grain filling stage resulting in low test weight grainD___22. Syngenta Agrisure Artesian? and Pioneer Optimum AquaMax? corn hybrids recently introduced are: Genetically engineered for drought tolerance Genetically engineered for glyphosate, glufosinate, and 2,4-D herbicide resistance Genetically engineered for gray leaf spot and stalk rot resistance Conventionally bred for drought tolerance Conventionally bred for increased nitrogen use efficiencyB___23. Nearly all commercial hybrid corn sold in the United States is all bagged by seed count. The standard seed count for these hybrid corn seed bags is:A) 60,000 B) 80,000 C) 100,000 D) 120,000 E) 140,000D___24.Crops genetically engineered for resistance to glyphosate herbicide would be indicated bythe patented trade name:A) Liberty Link? B) Clearfield? C) YieldGard? D) Roundup Ready? E) BollGard?D___25. Some new corn hybrids like Pioneer Optimum? AcreMax? now include “RIB” technology which means: A) There is no longer any non-Bt refuge required since there are multiple resistance genes in these new hybrids (stacked traits). B) The non-Bt refuge requirement has been increased to 30% of the field since rootworm resistance was reported in the Corn Belt last year. C) The non-Bt refuge requirement is reduced from 20% to 5% of the field, but it must still be planted in a separate area. D) The non-BT refuge seed is mixed in the bag with the Bt seed, thus no separate refuge area needs to be planted. E) None of the above, “RIB” technology has nothing to do with refuge since it is a new herbicide resistance trait, and has been the case with Roundup Ready, there is no refuge requirement for crops with herbicide resistance. D___26. The wheat diseases leaf rust, wheat scab and loose smut are all caused by:A) viruses B) bacteria C) nematodes D) fungi E) adjuvantsA___27. Barley yellow dwarf virus is a common wheat disease that is vectored primarily by which of the following?A) Bird cherry oat aphidB) Wheat curl miteC) Fall armywormD) Hessian flyE) Chinch bugC 28. Corn reproductive growth stages start with silking (R1) and end with physiological maturity (R6). The descriptive terms for the other four reproductive stages, in sequential order from R2 through R5, is:A) blister milk dent doughB) milk dough blister dentC) blister milk dough dent D) milk blister dough dentE) dent blister milk doughD 29. Nitrogen from fertilizer or manure may sometimes be lost from crop fields, and thus may harmthe environment, by:A) leaching into groundwater (contaminating wells used for drinking water)B) runoff into surface water (contributing to eutrophication of lakes and streams)C) denitrification releasing a “greenhouse gas” (potentially contributing to climate change) D) all of the above are possible ways nitrogen may be lost from soils under certain conditionsE) none of the above are significant, since nitrogen is so tightly held in the soilD___30. The terms suspension, saltation, and surface creep refer to processes involved in: leaching of nutrients into groundwater movement of airborne spray particles away from the intended area of application transport of disease pathogens from one plant to another wind erosion water erosionSEE AGRONOMIC CALCULATIONS ON THE FOLLOWING PAGESAGRONOMIC CALCULATIONSTwo part questions are 6 points each. One part questions are 4 points each. To receive full credit, show calculations and place answer in the box. Round to the nearest tenth unless otherwise indicated. Useful conversions: 43,560 ft2/acre, 2,000 lb/ton, 12 inches/foot, 5280 ft/mile31.You are calibrating a row crop planter. You find an average of 83 corn seeds dropped per 50 foot of travel by each planter unit. The planter has 30-inch row spacing. 28,923 seeds/ac Calculate the seeding rate in seeds per acre.7.2 inches/seedCalculate the distance between each seed within within the row (in inches).32.Your nutrient recommendation calls for 69 pounds P2O5 per acre for grain sorghum. Fertilizersavailable are UAN (32-0-0), TSP (0-46-0), and KCl (0-0-60). 12.0 tons TSP/acHow many tons of this fertilizer are neededfor a 160 acre field?33.You are estimating irrigated corn yield at dough stage to determine how much to sell oncontract. The plant population is 26,000 plants/acre. Assume one ear per plant. You find that an average ear has a count of 16 rows with 54 kernels per row. The estimated cornkernel weight is 1600 kernels per pound. 250.7 bu/acUsing the standard weight per bushel for corn, what is the estimated yield in bushels per acre? 34.You are calibrating a sprayer. You collect 25.6 fluid ounces or water in one minute from anindividual nozzle. Nozzle spacing is 20 inches and the speed of travel is 5 miles per hour. (Hint: 128 fluid ounces per gallon).11.9 gal/min Use the following formula to determine the sprayer application rate in gal/acre (GPA). GPA = 5940 x GPM MPH x Nozzle Spacing in Inches67.2 ac/tankIf the sprayer has an 800 gallon tank and a40 foot boom, how many acres will be sprayed with one tankful?35.Calculate the cost per pound of active ingredient (a.i.) to show which of the following pesticide formulations is least expensive: (round to the nearest cent)$6.33/ lb a.i. Weed-Out 60DF (60% a.i. dry flowable) at a cost of $3.80 per pound of product.$5.88/ lbs a.i. Weed-Out 4L (4 pounds a.i. per gallon liquid) at a cost of $23.50 per gallon of product.36. You wish to apply 1 inch of water to your field which is under a center pivot irrigation system on a quarter section in western Kansas. Your well capacity is 700 gallons per minute. There are 27,154 gallons per acre-inch. 80.8 hours/field How many hours will it take to complete a full circle and apply the 1 inch of water to the field? (Hint: a quarter section center pivot covers 125 acres) ................
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