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Crop Science Test 3
| Question | Answer |
|---|---|
| Modern cultivated cottons | consists of four species: two diploid and two tetraploid, are dominated by one species-Gossypium hisutum, and originated in asia, Africa, Central America, and South America |
| Cotton became economically important in the US around | 1792 |
| Most cotton produced in the US is | Gossypium hirsutum |
| One of the major fiber properties of cotton is length of the fibers, measured in 1/32nd inch units, and is referred to as the | staple |
| Cotton fruits are called bolls while the developing bud prior to flowering is called a | square |
| All cotton tissues except roots contain black, toxic compound called | Gossypol |
| Boll weevils are no longer a production problem for cotton in Alabama because | they have been eradicated in Alabama |
| Of the following which is not a characteristic of a soybean plant: C4 plant, family fabaceae, self pollinated, perfect flowers | C4 plant |
| Soybean growth and development is divided into vegetative stages (V1 through Vn) and | reproductive stages (R1 through R8) |
| High protein meal obtain from soybean | is primarily used to feed livestock |
| The most common oilseed crop in the US is | Soybean |
| Most soybean grown in the southern US have a growth habit called | determinate |
| Soybean should not normally be harvested at moisture levels below 12.5% because | seed are prone to damage from splitting and cracking |
| A bushel of soybeans weighs 60lbs and can be processed into | 11lbs of oil and 48lbs of high protein meal |
| used primarily for production of malt or as a feed grain is | barley (hordeum vulgare) |
| A major consequence of planting wheat too early is | lodging, excess vegetative growth, and insect problems |
| Triticale is a man made crop resulting from the hybridization of wheat and | rye |
| Common bread wheat originated | as a result of the natural hybridzation of three different species |
| The protein that gives wheat its bread making qualities is | gluten |
| Rotational grazing is a term to describe rotation of | animals in different pastures at different times for grazing |
| Cellulose is a polymer of | glucose |
| One major advantage of hay as a forage is | it can be stored and fed as needed |
| The terms used for classification of the two major types of grazing lands are | range and pasture |
| The major fertilizer that causes the most response in forage grasses is | nitrogen |
| How does over use or extensive use of insecticides eventually lead to a loss of their effectiveness | It can lead to insect resistance and can also kill honeybees and other good insects |
| A cotton grower harvests an average of 1178lbs of seed cotton per ac with a gin turnout of 472lbs of lint per ac. What is the approximate lint percentage be | 40% |
| Cotton plants have two types of branches. What is their names and explain their roles in produciton of cotton. | vegetative:photosynthesis reproductive:produces flower |
| Soybean produced in the US is mainly used in two ways | oil and protein |
| Give a brief description of ruminant and cellulose | ruminant is a mammal that digests plant material with either a 3 or 4 chamber stomach cellulose is a polysaccharide of beta(1-4) d-glucose chains that serves as the structural component of a plant |
Created by:
twp0001
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