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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
Vine density The number of vines per a define area of land (acres, hectare, etc). This can be influenced by many factors including appellation law, the availability of water and soil fertility and the need for mechanization in the vineyard. In many wine regions vine density will vary from 3000 to 10000 vines per hectare Vine training
The bud of a Regent vine located between the stem and petiole.. The grape starts its annual growth cycle in the spring with bud break. In the Northern Hemisphere, this stage begins around March while in the Southern Hemisphere it begins around September when daily temperatures begin to surpass 10 °C (50 °F).
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[5] [9] [2] Premium wine producers in California estimate that a 100% red blotch infection can reduce the value of a vineyard by as much as $68,000 per acre. [ 2 ] Research indicates that red blotch is not a new disease, but has been overlooked until its discovery at UC Davis in 2008 because its symptoms appear similar to those of grapevine ...
Esca (Measles, Spanish Measles, Black Measles) is a basidiomycete disease caused by several species of the Fomitiporia. [30] It is a common cause of economic loss in the state. [30] Vasquez 2007 assessed losses $2,000 to $3,000 per hectare ($810 to $1,210/acre) for all afflictions called "Esca" in the state's vineyards. [30]
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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.