The best soil types for grapes are known to be well-drained loam to sandy loam with good organic matter. Thoughts on fertilizer calculations. All of this results in more top-quality grapes for a long time. Use 2 pounds of fertilizer if the garden is sandy and 3 pounds if the soil is generally clay. Some types of grapevines do better in hot weather, whereas others like Zinfandel grapes need an extra dose of nutrients. Fertilizer is measured by its content of nitrogen, phosphorus and potassium, or NPK. The paper discusses the importance of soil pH, nitrogen, phosphorous and potassium fertility of grapes. This paper is a summary of several sources of university publications, books and personal communications that will give the reader the necessary information on fertilization of grapes. In general, grape vines are not heavy feeders and do not need much fertilizer after they are well-established. Supplying these unique requirements starts with identifying the present soil and leaf conditions with coordinated soil and plant analysis. Poorly drained, alkaline soils should be avoided. Apply half the dose of potash immediately after pruning and the other half after 60 days of pruning. Spread evenly over an area 4 to 5 feet in diameter. From here the grower can also fine tune their fertility program further by looking at boron, zinc, manganese, copper and iron requirements of grapes. After reading this paper you will have a more complete understanding of grape nutrition. Grapes and grapevines cannot survive without the nutrients they receive from fertilizers and organic fertilizer. Nutrient levels in the topsoil adequate for vineyard establishment are 12-20 ppm phosphorus, 120-150 ppm potassium, 100-250 ppm magnesium and 1,000-5,000 ppm calcium. After scattering fertilizer, gently rake it into soil and water thoroughly (see label: http://www.lillymiller.com/labels/Ultragreen/UG_All-Purpose_10lb.pdf). For older vines, application of fertilizer is done according to given in the table. SynopsisThis paper goes into depth about proper fertilization practices for a grape vineyard. In general most growers will use an off the shelf fertilizer analysis for grapes, when in reality vineyards are like any other living thing that requires different nutrients in different ratios depending on the soil type, native material, and other amendments that may be distributed around them. Full dose of FYM and SSP and half dose of Nitrogen and Potassium are applied after pruning and half dose of Nitrogen and Potassium are applied after fruit set in April. After reading this paper you will have a more complete understanding of grape nutrition. Follow manufacturer's specific directions for other types of fertilizers. For grapes, a ratio of 10-10-10 is adequate. Apply 1/3 a cup of Ultragreen for every 25 feet of grape vines. Apply no more than ¼ pound (0.11 kg.) Getting a soil test is the best way to determine accurately the amount of fertilizer to apply to your grapes. A Guide to Fertilizing Grapes. If you are not sure, or have absolutely no idea what you are doing, you can add 500 kg 2:3:2 (22) at the beginning of the season and top-up with 200 kg KNO 3 after 3 weeks and again after 5 weeks. Second year: Apply 8 ounces (1 cup) of 10‐10‐10 per vine soon after growth begins, and again about 4 weeks later. Keywordsboroncalciumcopperfertilizerfertilizationfoliar fertilizationgrapesironLambruscamagnesiummanganesephosphorusplant analysispotassiumsoil analysissoil pHsoil testsulfurvineyardViniferazinc. Most producers appreciate that Vinifera, Lambrusca, and Concord species have their own unique requirements. Proper fertility pays dividends year after year. Moderate amounts of fertilizer during the first and second years after planting will help stimulate young plants to size up for earlier fruit production. Two pounds of 5-10-5 fertilizer supplies as much nitrogen 1 pound of 10-20-10. And it does not end here; the paper goes into the secondary nutrients of calcium, magnesium and sulfur and their usage as well as application recommendations. Grapes are grown well on soils having less than pH 8.7 and EC up to 1.5 mmhos/cm, calcium carbonate … Grapes. In lieu of that, you will find that general recommendations vary somewhat depending upon the source. Fertilizer for Grapes The best time to effectively incorporate nutrients such as potassium, phosphorus, boron and lime into the soil is prior to planting the vineyard. Manufacturer Lilly Millers's Ultragreen is an appropriate dry fertilizer for grapes. The manures should be applied twice after pruning. Ideally this would be done before the soil is prepared for planting. Calculating fertilizer recommendations is an art and not science. Optimum grape growth and quality requires optimum fertility conditions. Horticulture :: Fruit Crops :: Fertilizer Schedule. You should be fine, honestly. about 8 feet (2.4 m.) from the base if the plants appear to lack vigor. FERTILIZERS Year of planting: Apply 4 ounces (1/2 cup) of 10‐ 10‐10 per vine soon after growth begins, and repeat about 4 weeks later. of 10-10-10 fertilizer in a circle around the plant, 4 feet (1.2 m.) away from each vine. Too much fertilizer can stimulate wood and leaf growth rather than fruit production. This paper is a summary of several sources of university publications, books and personal communications that will give the reader the necessary information on fertilization of grapes. Apply plant food for grapes … Improvements in the first year will not likely be seen by the eye, but the greatest gain will likely be in the following years with better color, more dense clusters, and optimum growth. Two cups of most fertilizers will weigh about 1 pound and if a fertilizer has more nitrogen, useless. Do not use too much fertilizer and this can kill plants. Grapes usually require very little nitrogen fertilizer. In successive years, apply 1 pound (0.45 kg.) A grape is a fruit, botanically a berry, of the deciduous woody vines of the flowering plant genus Vitis.. Grapes can be eaten fresh as table grapes or they can be used for making wine, jam, grape juice, jelly, grape seed extract, raisins, vinegar, and grape seed oil.Grapes are a non-climacteric type of fruit, generally occurring in clusters.