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 (in) |
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 Rows
For 36-inch rows, multiply by 0.93
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 |
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 pas = 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
