Agriculture Reference
In-Depth Information
Conversions:
1 acre = 43 560 ft
2
To convert lbs/acre to lbs/1000 ft
2
, divide by 43.56 or 44
1 acre = 0,405 hectare
1 hectare = 2.47 acres
1 hectare = 10 000 meters
2
100 meters
2
= 1Are (air) = 1076 ft
2
The top 6 to 7 inches of 1 acre of average soil is assumed to weigh 2 000 000 lbs
The top 15 to 17 cm of 1 hectare of average soil is assumed to weigh 2 000 000 kg
1 part per million (ppm) = 2 lbs/acre or 2 kg/hectare
1 ppm = 2 grams per 100 ft
2
or 2 grams per 10 m
2
1 ppm = 20 grams per 1000 ft
2
or 20 grams per 100 m
2
1 lb/acre = 1 gram per 100 ft
2
1 kg/ha = 1 gram per 10 m
2
