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When stocking, a tree's basal area is measured. The basal area is a cross-sectional area of the stump taken about 4.5 feet (1.4 m) above the ground. [7] The equation for calculating the basal area of trees in a stand is Basal Area = 0.005454 DBH 2, where DBH is the diameter of the tree at the aforementioned measuring height. [7]
Haddock thought that Wright's suggestion of 20 to 40 (average 30) cubic feet per acre (1.4 m 3 /ha to 2.8 m 3 /ha (average 2.1 m 3 /ha) per year was more reasonable, but still somewhat optimistic. The principal way forest resource managers influence growth and yield is to manipulate the mixture of species and number (density) and distribution ...
Now the dominant nitrogen-fixing plant in the eastern United States, kudzu fixes an estimated 235 kilograms per hectare (209 + 11 ⁄ 16 lb/acre) of nitrogen per year, which is an order of magnitude higher than the rates of native species. [6] This ability allows it to flourish in nitrogen-poor sites where other plants are unable to grow.
Here's a handy guide for diagnosing and treating your lawn's post-summer damage.
Representative figures for the amount of grapes needed for 100 L of wine are 160 kg for white wine, 130 kg for red wine, and 140 kg for a mixture of red and white wine. [1] Thus: [2] for white wine, 100 hl/ha ≈ 16,000 kg/ha (16 t/ha) = 6.5 tons per acre. 1 ton per acre = 2470 kg/ha ≈ 15 hl/ha
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Muscadines are hearty grapes with thick and tough skin that protects them from many plant diseases. [10] These grapes ... per hectare (8–18 tons per acre) are ...
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