Grape Fertilizer Calculator
Per-vine grape fertilizer planner — age-based doses up to 500:250:500 g N-P₂O₅-K₂O per vine/year converted into urea, DAP and MOP for your whole orchard.
Anchored to the pruning calendar: the major dose after foundation (April) pruning builds canes; after forward (October) pruning, feeding shifts K-heavy for berry development in the fruiting season.
Indicative planning figures based on published research averages. Local soil tests, varieties and weather change actual requirements — confirm with your agronomist or extension officer.
Orchardists use the free Grape Fertilizer Calculator to turn the per-vine recommendation into total urea, DAP and MOP for the whole block — young and bearing vines included — without a single hand calculation.
About Grape Fertilizer Calculator
In the Nashik–Sangli double-pruning system, the vine's year has two springs — fertilizer follows the pruning knife, with cane-building nutrition in summer and K-led berry nutrition after the October prune. The calculator uses the age-laddered recommendation — 250:125:250 g N-P₂O₅-K₂O per vine/year (young vine (pre-bearing)); 500:250:500 g N-P₂O₅-K₂O per vine/year (bearing vine) — multiplies it across your vine count, and converts the totals into urea (46% N), DAP (18-46-0) and MOP (0-0-60) quantities for the season.
How to use Grape Fertilizer Calculator
- 1Enter how many vines you have and choose their age/bearing stage.
- 2Read the total urea, DAP and MOP for the year, plus the per-vine nutrient breakdown.
- 3Follow the split note for when and where to apply each dose.
Why use Grape Fertilizer Calculator?
- ✓Published per-vine dose ladder for grape, from planting to full bearing
- ✓Whole-orchard totals — no per-tree mental math
- ✓Automatic conversion to urea, DAP and MOP with the DAP nitrogen credit handled
- ✓Free, instant and fully in-browser — works offline in the orchard
Frequently asked questions
How much fertilizer does a grape vine need per year?+
Young vine (pre-bearing): 250 g N, 125 g P₂O₅ and 250 g K₂O per vine per year; Bearing vine: 500 g N, 250 g P₂O₅ and 500 g K₂O per vine per year. Anchored to the pruning calendar: the major dose after foundation (April) pruning builds canes; after forward (October) pruning, feeding shifts K-heavy for berry development in the fruiting season..
How does double pruning change grape fertilization?+
April (foundation) pruning starts the vegetative season — feed for cane and bud development. October (forward) pruning starts the fruiting season — shift to potassium-rich feeding for berry size and Brix.
Which nutrient most affects grape berry quality?+
Potassium, by a distance: it drives berry size, sugar loading and colour. But excess K competes with magnesium — petiole analysis, standard in export vineyards, keeps the balance honest.
How do I convert the per-vine dose into urea, DAP and MOP?+
The tool multiplies the per-vine grams across your count, then sizes DAP to cover P₂O₅ (crediting its 18% N), urea for the remaining N, and MOP for K₂O — the same arithmetic an agronomist would do by hand.
Is this calculator free and private?+
Yes — free, no sign-up, and everything runs in your browser, so your orchard data never leaves the device and the tool works offline.
Related Agri tools
Tractor Fuel Consumption Calculator
Estimate your tractor's diesel consumption per hour from its horsepower, load and specific fuel consumption.
● LiveTractor Fuel Cost Per Acre Calculator
Convert your tractor's fuel use per hour into diesel litres and cost per acre for any field operation.
● LiveImplement Field Capacity Calculator
Calculate the effective field capacity (ha/h and acres/h) of any implement from width, speed and field efficiency.
● Live