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Crops Test 2011
| Question | Answer |
|---|---|
| Which of the following plants can symbiotically fix nitrogen? a. wheat b. corn c. lentils d. cotton | Lentils |
| A fertilizer that is a high pressure liquid and 82.2% nitrogen is: a. urea b. 82% nitrogen solution c. aqua ammonia d. anhydrous ammonia | Anhydrous ammonia |
| Phosphorus will not move a great deal in the soil because a. it is a cation and reacts with organic matter b. it is a cation and reacts with sand c. it is an anion and reacts with calcium, iron, aluminum and clay surfaces d. it is applied at a low | It is an anion and reacts with calcium, iron, aluminum, & clay |
| Potassium fertilizer would be needed most on: a. sandy soil b. clay loam soil c. sandy loam soil d. potassium rates are not affected by soil type | Clay loam soil |
| Soil structure is defined as: a. the way sand, silt and clay are grouped together b. the way the soil was built by glaciers c. the ability of soil to be used in supporting buildings d. the percent of sand, silt and clay | The way sand, silt and clay are grouped together |
| The soil with the best water holding capacity would be: a. sand b. silt loam c. clay loam d. sand loam | Clay loam |
| Wind erosion that moves small sized particles over great distances is what type of erosion? a. surface creep b. sheet c. splash d. rill | Surface Creep |
| Most soil compaction results from: a. excessive freezing and thawing b. driving on or tilling wet ground c. improper use of fertilizers and chemicals d. driving on or tilling dry ground | Driving on or tilling wet ground |
| An insecticide that moves throughout the plant is: a. systemic b. contact c. photosynthetic d. juvenile | Systemic |
| Which of the following signal words represent the greatest hazard? a. hazard b. warning c. danger d. toxic | Danger |
| One limitation of a no-till system is: a. increases fuel costs b. increases machinery costs c. requires more labor d. certain pests may be more of a problem | Certain pests may be more of a problem |
| A hybrid is: a. the most expensive seed source b. a cultivated variety within a plant species that is different from other members of its species c. a male plant d. offspring of two parents that are different in one or more heritable characteristi | Offspring of two parents that are different in one or more heritable characteristics |
| A cultivar is: a. the most expensive seed source b. a cultivated variety within a plant species that is different from other members of its species c. a male plant d. offspring of two parents that are different in one or more heritable characteris | a cultivated variety within a plant species that is different from other members of its species |
| You have a fungicide with a 50WP formulation. The label recommends 3 pounds of active ingredient per acre applied. How much product do you need to apply to meet this recommendation? a. 2 pounds b. 4 pounds c. 6 pounds d. 8 pounds | 6 pounds |
| You are planting 40 acres of pinto beans. You want to plant 60 pounds of viable seed per acre. The seed you purchased is 95% pure with a germination of 95%. How many actual pounds must you plant? a 1855 pounds b 2805 pounds c 3100 pounds d 3565 po | 2805 pounds |
| Plant diseases native to an area and generally at a low level are called: a. endemic b. epidemic c. pathogenic d. organismal | Endemic |
| Most fungicides are applied: a. as protectants b. as eradicants c. to control bacteria d. after infection has occurred | As protectants |
| Viruses are transmitted between plants: a. by insects, mechanically, or by pollen b. always by insects c. spores d. by wind | By insects, mechanically, or by pollen |
| An example of an insect that is a predator is a : a. green lacewing b. aphid c. honey bee d. grasshopper | Green lacewing |
| There are ______ sections of land in a township. a. 6 b. 16 c. 36 d. 72 | 36 |
| The life cycle of a plant that grows vegetation the first year then flowers and produces seed the next year is a: a. winter annual b. summer annual c. perennial d. biennial | Biennial |
| Winter varieties of crops need a cool or freezing period in order to insure the plant will flower the next year. For example winter wheat. This process is called: a. vernalization b. glutenizing c. scarification d. bolting | Vernalization |
| The tillers of a plant can best be described as: a. roots b. leaves c. crown d. stems | Stems |
| The most common type of corn grown in the United States is: a. pop b. sweet c. dent d. flint | Dent |
| Select the condition that could help reduce pesticide volatilization: a. high air temperatures b. low relative humidity c. incorporation d. small droplets | Incorporation |
| The average water needs of a plant are greatest when: a. the seed is placed in the soil b. when the plant is in the cotyledon stage c. when the plant is nearing or in reproductive stage d. when the plant has reached maturity | When the plant is nearing or in reproductive stage |
| What improves the chances that a corn plant survives a frost? a. location of the plant growing point b. rooting depth c. insecticide used d. soil texture | Location of the plant growing point |
| Which of the following plants best tolerates drought? a. small grains b. corn c. perennial forages d. soybeans | Perennial |
| The primary advantage of fallowing land is: a. improve soil moisture b. improve soil structure c. improve soil micro organisms d. prevent erosion | Improve soil moisture |
| What advantage does a crop rotation system have over a single crop system? a. requires less machinery b. helps break pest cycles c. allows farmers maximum participation in government commodity programs d. reduces chances of a crop failure | Helps break pest cycles |
| Which of the following nutrients becomes more available as the pH increase? (becomes more alkaline) a. manganese b. iron c. copper d. calcium | Calcium |
| In small grain production, jointing refers to which of the following? a. tiller production b. the head is in the boot c. the first node is visible d. the flag leaf has emerged | The first node |
| Your agronomist suggests applying a 35-0-0-10 fertilizer to your land. The 10 represents 10 %: a. sulphur b. lime c. boron d. zinc | Sulphur |
| The leaf blade of a grass plant is attached to a leaf sheath which in turn attaches to the stem of the plant at the: a. auricles b. ligules c. node d. crown | Node |
| In some cases, one can estimate the amount of organic matter found in the soil until it becomes totally black. Soil is black when the organic matter content is equal to or greater than ________ percent. a. 1 b. 2 c. 4 d. 5 | 5 |
| Your soil test recommends 150 pounds of nitrogen per acre applied to your 25 acre field. How much 35-0-0 do you need to apply to meet the recommendation for this field? a. 429lbs./acre b. 150 lbs./acre c. 444 lbs./acre d. 245 lbs/acre | 429 lbs/acre |
| Which of the following is NOT a plant pathogen. a. fungi b. bacteria c. weeds d. nematodes | Weeds |
| Grassy weeds can be identified based on morphological traits such as: a. size and shape of spike b. petiole length c. auricles and ligules d. structure of veins in the leaves | Auricles and ligules |
| In general, the optimum pH for the growth of most plants is between: a. 4.5 – 5.0 b. 5.0 – 5.5 c. 6.0 – 6.5 d. 7.0 – 7.5 | 6.0 - 6.5 |
| Which of the following definitions best describes a petiole: a. the surface of the leaf b. the stem attached to the leaf c. the vein structure in the leaf d. the edge of the leaf | The stem attached to the leaf |
| Which of the following conditions is best for long-term seed storage? a. hot and dry b. high relative humidity and high temperatures c. varying temperatures and low relative humidity d. low temperature, low relative humidity | Low temperature, low relative humidity |
| ____ is when a plant produces a chemical toxin that impairs the growth of a different plant. a. antibiosis b. autotoxicity c. symbiosis d. allelopathy | Allelopathy |
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