Agriculture Reference
In-Depth Information
Table 8.4. The number of samples tested by the U.S. laboratories in 1998 and 2007 for various vigor
tests of different crops.
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Year 1998 2007
Vigor test No. Labs (77) (28)
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Accelerated Aging 14,700 5,900
Saturated Salt AA -- 3,150
Controlled Deterioration -- 800
Cold Test 363,313 30,320
Saturated Cold Test 59,000 590
Cool Germination 22,440 9,020
Electrical Conductivity 2,845 675
Seedling Growth Rate -- 4,770
Seedling Vigor Classiication -- 250
Tetrazolium (TZ)* 3,000 1,900
Speed of Germination -- --
Thermogradient -- 400
Other tests -- 550
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The surveys included AOSA (oficial/state) and SCST (commercial/private) laboratories in the United States.
Table 8.5. Percentage of laboratories testing each crop for vigor.
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Year 1976 1982 1990 2007
Crop No. Labs (5) (6) (8)
(
28)
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------------------------------------------%------------------------------------------
Corn 56 85 66 39
Soybean 44 74 58 36
Cotton 23 20 24 19
Peanuts -- 8 6 4
Sorghum 17 20 27 --
Field Beans/Pulses 9 15 18 21
Lettuce 10 8 7 --
Wheat -- 30 31 --
Other -- 28 40 25
Fruits and Vegetables -- -- -- 29
Cereals other than corn -- -- -- 32
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The surveys included AOSA (oficial/state) and SCST (commercial/private) laboratories in the United States.
