Because a hectare is equal to 2.471 acres, it means that 200 bu/ac is equal to about 12,553 kg/ha (5,080 kg/ac x 2.471 ac/ha = 12,553 kg/ha). In the metric system, yield is given by weight (kilograms per hectare).Ī corn yield of 200 bushels per acre is first expressed by weight (200 bu 56 lb/bu = 11,200 lbs) and then converted to kilograms (11,200 lbs *. Grain yields for example are conventionally expressed in terms of volume per acre (bu/a).
Some of our traditional terms are more complicated to convert from one system to another. 405 metric tons per acreġ metric ton per hectare = 892 pounds per acreġ metric ton per hectare = 100 grams per square meter Grain yields tons per hectareġ metric ton per hectare =. ton per acre = 2.24 metric tons per hectareġ U.S. A reading of 37° on the Celsius scale is the approximate equivalent to human body temperature (98.6° F) and water boils at 100° C (212° F).ġ U.S. The temperature at which water freezes is 0° and is equivalent to 32° F (Fahrenheit). Temperature is measured in the Celsius (C) scale. One liter of water weighs one kilogram at sea level.ġ metric ton (MT or t) = 2,204.62 (2200) poundsġ bushel corn (56#) = 25.40 (25) kilogramsġ bushel wheat/soybeans (60#) = 27.22 (27) kilogramsġ quintal = 3.937 (4) bushels corn (56# bu)ġ quintal = 3.674 (3.7) bushels wheat/soybeans (60# bu)ġ metric ton = 39.37 (40) bushels corn (56# bu)ġ metric ton = 36.74 (37) bushels wheat/soybeans (60# bu) Temperature A gram (1/1,000 kilogram is approximately the weight of a paper clip), and is used for making very small measurements. Weight (or more technically accurate, mass) in the metric system is measured in kilograms (kg). Very large volumes may be measured in cubic meters (1 cubic meter = about 264 gallons).ġ cubic meter = 28.38 (30) bushels Weight A liter contains slightly more liquid than a quart. Contained in this cube are 1,000 cubic centimeters or one liter. The basic unit of volume in the metric system is a cube, 10 centimeters on each side. 3861 (.4) square milesġ square mile = 2.590 (2.6) square kilometersġ square mile = 259 (260) hectares Volume (capacity) This unit of land is called the hectare (ha) and is equal to approximately 2.5 acres.ġ square meter (sq m) = 1.196 (1.2) square yardsġ square kilometer (sq km) =. The basic metric unit of land area measurement is a square with each side 100 meters long, covering an area of 10,000 square meters. A centimeter (one-hundredth of a meter) is slightly less than one-half of an inch. A speed of 100 kilometers per hour is about 60 miles per hour. So a distance of 100 kilometers is about 60 miles. The basic unit of length is the meter-slightly more than one yard in length. Easy-to-remember approximate or ball-park conversions are often used in general discussion. Precise conversions are used for exact technical analysis. Precise and approximate (in parentheses) metric conversions are in the next column. Conversions between these measurements are simple decimal locations based on factors of 10. Thus, all dimensions of length can be expressed as variations of a meter. For example, a long distance is expressed in kilometers (1,000 meters) or a short length may be expressed in millimeters (1/1,000 of a meter). Metric units can be modified by adding a prefix to simplify expressions of very short or long units. So we often need to make conversions between our system and the metric system.
The United States is the only major trading nation that does not use the metric system. Saving Earth Britannica Presents Earth’s To-Do List for the 21st Century.Most of the world does its measuring in meters, grams, and liters.
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