Useful Links:

OnlineConversion.Com  -- Outstanding site (BlueSparks Network)

Common Equivalent Weights and Measures (UC Berkeley - Chemistry)

Metric-conversions.org

• Linear Measure
• Square Measure
• Weights
• Volume
• Temperature Conversions
• Yield Estimates
• Seed Required/Acre
• Potato Weights and Volumes
• Sprayer Calibration

   
  Linear Measure

• 1 centimeter -- 0.3937 inch
• 1 inch -- 2.54 centimeters
• 1 foot -- 0.3048 meter
• 1 meter -- 39.37 inches
• 1 yard -- 0.9144 meter
• 1 kilometer -- 0.621 mile
• 1 mile -- 1.609 kilometers

Square Measure

• 1 sq. centimeter -- 0.1550 sq. inch
• 1 sq. inch -- 6.452 sq. centimeters
• 1 sq. foot -- 0.0929 sq. meters
• 1 sq. meter -- 1.196 sq. yards
• 1 sq. yard -- 0.8361 sq. meter
• 1 hectare -- 2.47 acres
• 1 acre -- 0.4047 hectare
• 1 sq. kilometer -- 0.386 sq. mile
• 1 sq. mile -- 2.59 sq. kilometers

Weights

• 1 tablespoon -- 3.0 teaspoons
• 1 tablespoon -- 0.5 ounce (liquid)
• 1 gram -- 0.03527 ounce
• 1 ounce -- 28.35 grams
• 1 kilogram -- 2.2046 pounds
• 1 pound -- 0.4536 kilogram
• 1 Cwt -- 100 lbs.
• 1 English (long) ton -- 2,240 pounds
• 1 English (long) ton -- 1.016 metric tons
• 1 metric ton -- 0.98421 English ton
• 1 English (long) ton -- 1.12 short tons
• 1 short ton -- 2,000 lbs
• 1 short ton -- 0.907 metric ton
• 1 metric ton -- 1.102 short tons
• 1 metric ton -- 2,204.6 pounds

• Volume

• 1 tablespoon -- 14.787 milliliters
• 1 cubic centimeter -- 0.061 cubic inch
• 1 cubic inch -- 16.39 cubic centimeters
• 1 cubic foot -- 0.0283 cubic meter
• 1 cubic yard -- 0.7646 cubic meter
• 1 liter -- 1.0567 quarts liquid
• 1 quart dry -- 1.101 liters
• 1 quart liquid -- 0.9463 liter
• 1 gallon -- 3.78541 liters

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Temperature Conversions

^oC  =  ^oF - 32
              1.8

^oF  =  (^oC x  1.8) + 32

Yield Estimates

Harvest potatoes from several 10-ft sections of row, calculate the average wt. in lbs, then multiply by the following numbers to estimate approximate yield/acre in cwt.

            Approximate Cwt/Acre = lbs/10 ft. x Multiplication Factor

Row Width, Inches	Multiplication Factor
33	16.4
34	15.4
36	14.5

 

Seed Requirements

           Approximate Cwt. of Seed Required to Plant an Acre Using 34-inch Rows¹

Seed	Seed piece Weight, Oz.
Spacing, In.	1	1.5	1.75	2
6	19.2	28.8	33.6	38.4
8	14.4	21.6	25.2	28.8
10	11.4	17.4	20.4	22.8
12	9.6	14.4	16.8	19.2
15	7.8	11.4	13.8	15.6

               ¹For 36-inch rows, multiply by 0.93

 

Potato Weights & Volumes
 
 

1 lb/acre = 1.12 kilogram/hectare	1 kilogram/hectare = 0.892 lb/acre
1 cwt/acre = 0.112 metric tons/hectare	1 metric ton/hectare = 8.93 cwt/acre
1 bushel of potatoes = 53 lbs	1 bushel = 1.244 cu ft = 35.2 liter
1 cu ft of potatoes = about 42 lbs	1 cwt of potatoes = 2.38 cu ft
42 lbs/cu ft = 672.5 kg/cubic meter	1 barrel = 11 pks = 165 lb = 3.93 cu ft = 0.11 cu meter
1 short ton = 2000 lb	1 metric ton = 2204.6 lb

 

Sprayer Calibration

Broadcast Sprayer Calibration:
 

Gallons/acre    =    (5940 x gallons/minute/nozzle)/(nozzle spacing in inches x mph)
    Example              (5940 x 0.35 gpm)/(18 inches x 4.5 mph)    =     25.7 gpa

Band Sprayer Calibration:
 

Gallons/acre     =    (5940 x gpm/nozzle)/(nozzle band width x mph)
    Example              (5940 x 0.35 gpm)/(12-inch band x 4.5 mph)     =    38.5 gpa

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