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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
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.
[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 ...
Here's a handy guide for diagnosing and treating your lawn's post-summer damage.
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One major complication to the use of herbicides for weed control is the ability of plants to evolve herbicide resistance, rendering the herbicides ineffective against target plants. Out of 31 known herbicide modes of action, weeds have evolved resistance to 21. 268 plant species are known to have evolved herbicide resistance at least once. [ 59 ]
The disease infects all parts of the plant most commonly on golf course roughs, sports fields, and home lawns. There are two stages of the disease: the leaf blade infection and the crown and root infection [ 3 ] Melting out occurs during the cool weather of April and May and is encouraged by high nitrogen fertility.
Many people use trellising to keep the vines off the ground. Trellising is a form of plant training, which is the arrangement of plant parts spatially to optimize productivity. Having the grape vines off the ground “reduces the time that vines remain wet from dew and rain and thus limits the amount of infection”. [2]
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