📊 Repere fiziologice — Kiwi

Cultură / taxon: Kiwi · Actinidia deliciosa / A. chinensis / A. arguta

Rol agronomic: K/Ca/Mg are major fluxes; Ca foliar evidence exists, but efficacy varies by formulation/program.

Mod de aplicare: 800–1200 L/ha

Condiție de aplicare: A two-year Hayward study found preharvest organic-Ca programs affected firmness and mineral composition; this supports Ca as a management tool, not a guaranteed +15–20% fruit-size or 4–5 month storage effect.

Obiectiv: Fruit growth and firmness support.

Risc descris: No guaranteed fruit-size percentage or storage duration from foliar Ca/K.

Cultură / taxon: Kiwi · Actinidia deliciosa / A. chinensis / A. arguta

Rol agronomic: Seasonal accumulation data show substantial K/N remobilization from leaves after fruit set and continued fruit nutrient accumulation.

Mod de aplicare: 800–1200 L/ha

Condiție de aplicare: Smith et al. reported post-fruit-set leaf losses of K ~21–37% and N ~16–22% contributing to fruit demand; these are redistribution percentages, not fertilizer rates.

Obiectiv: Maturation with balanced source–sink nutrition.

Risc descris: Redistribution % must not be converted to foliar dose.

Cultură / taxon: Kiwi · Actinidia deliciosa / A. chinensis / A. arguta

Rol agronomic: Brix and storageability are strongly cultivar, harvest maturity, temperature and postharvest dependent.

Mod de aplicare: 700–1000 L/ha

Condiție de aplicare: Current ROfert scheme claims Brix >6.5 and excellent storage; documentația treats them as commercial targets, not independent guaranteed fertilizer responses.

Obiectiv: Correct harvest maturity and storage potential.

Risc descris: Late nutrition cannot guarantee Brix or months of storage.