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the number of perennials in the genus Medicago |
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the number of annuals in the genus Medicago |
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can annuals and perennials in the genus Medicago hybridize? |
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a difference between clover and alfalfa leaflets |
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In clover, the leaflets are equidistant In alfalfa, the middle leaflet has a longer pedicel |
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how germination works in alfalfa seed pods |
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In each pod, when one seed germinates, it prevents the others from germinating |
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Where Did Alfalfa Come From? |
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this is basically the center of origin [image] |
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something about the genetics of alfalfa in the center of origin |
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Lots of genetic diversity in center of origin |
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the first place in the U.S. where alfalfa arrived |
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one of the first people to experiment with alfalfa |
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what they call alfalfa in Australia and NZ |
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Maclure is known as the father of geology in the US; he founded the USGS |
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this person is known as the father of geology in the US; he founded the USGS |
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one of the problems with growing alfalfa in the late 18th century |
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what gypsum does to the pH |
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it doesn’t change pH, but ties up Al |
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a variety of alfalfa known for cold tolerance |
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the Grimm variety of alfalfa known for... |
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why California turned out to be a good place to grow alfalfa |
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because of its dry, not cold, mediterranean type climate, which is the type of climate it evolved in |
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We try to incorporate ______ into the non dormant types of alfalfa |
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First GMO trades in [this year] |
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the only program left in the SE region for cool season forages |
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Alfalfa grown in California is grown under ______ |
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The largest crop in Cal is ______ |
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some things to do when growing alfalfa |
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Definition
-Well tilled, weed free seedbed -Lime and fertilize as needed -Plant after danger of frost -Don’t grow in wet areas -Harvest at early flower -Control weeds -Plow up when stands thin
not much has changed in ~ 2000 years |
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The meaning of alfalfa is... |
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depiction of the alfalfa crown |
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functions of the alfalfa crown |
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-Site of regrowth -storage compounds for stress survival (carbohydrates, proteins, fatty acids, etc.) |
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some storage compounds stored in the alfalfa crown for survival |
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-carbohydrates -proteins -fatty acids -etc. |
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Dormancy is important in alfalfa because... |
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Definition
it controls autumn growth and regrowth rate during the year |
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If you’re in a mild winter region, grow a [dormant or non dormant] variety of alfalfa |
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depiction of different architectures of alfalfa depending on type of dormancy |
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plants go dormant because of... |
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______ controls the depth of dormancy |
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One of the problems we have with alfalfa in Ga |
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disease that very easily infects alfalfa |
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some insect pests of alfalfa |
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-Potato Leafhoppers -Alfalfa Weevil -Several Aphids -Plant Bug -Lygus |
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how potato leafhoppers harm alfalfa |
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They pierce the leaf, inject saliva, and feed like mosquitoes; the saliva contains chemicals toxic to the plant; characteristic due to V shape on leaflets |
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some other insects in Ga that can harm alfalfa |
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-Three cornered alfalfa hopper -Blister beetle |
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a pest that harms alfalfa that happens to be toxic to horses |
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how some new varieties of alfalfa are resistant to potato leafhoppers |
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Newest varieties have gladular hairs (these are repellent to the leaf hopper; prevents insect from coming into contact with the leaf) |
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what they breed alfalfa for in Australia |
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why you gotta rotate the grazing with alfalfa |
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because alfalfa is sensitive to grazing |
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this means it has a tap root and roots branching out from it |
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Storage organ for alfalfa |
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how grazing tolerant alfalfa is selected |
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Selected under severe grazing for survival |
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grazing tolerance of creeping rooted alfalfa |
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May or may not be grazing tolerant! |
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alfalfa when it comes to causing bloat |
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Definition
All varieties are capable of inducing bloat |
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why grazing management is very important for alfalfa |
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because it is very important for alfalfa if you want to maintain the stand |
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some Biotech traits in alfalfa |
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-Roundup Ready -Improved nutritional value -Improved leaf retention -Production of novel products |
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some ways that the nutritive value of alfalfa has been improved |
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-Low lignin, improved digestibility -Tannin containing (no bloat) |
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some novel products produced by alfalfa |
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-Industrial enzymes -Plastics |
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what you gotta factor in when trying to decide what species of alfalfa to grow |
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some crops that are subsidized in the U.S. |
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The only nutrient you need to worry about for alfalfa |
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