📊 Repere fiziologice — Nectarin

Cultură / taxon: Nectarin · Prunus persica var. nucipersica

Rol agronomic: Nectarine shares Prunus persica physiology with peach; Penn State groups both in one tissue standard.

Mod de aplicare: 500–800 L/ha

Condiție de aplicare: Penn State Peach and Nectarine normal leaf: N 2,50–3,40%; P 0,15–0,30%; K 2,10–3,00%; Ca 1,90–3,50%; Mg 0,20–0,40%; B 25–50 ppm; Zn 20–200 ppm.

Obiectiv: Înflorire și frunză funcțională.

Risc descris: Do not turn a shared species-level leaf range into proof of a specific cultivar response.

Cultură / taxon: Nectarin · Prunus persica var. nucipersica

Rol agronomic: Nectarine skin does not make Ca automatically more effective; root water flow and crop load remain determinants.

Mod de aplicare: 700–1000 L/ha

Condiție de aplicare: Penn State tissue normal Ca 1,90–3,50%, K 2,10–3,00%, Mg 0,20–0,40% for peaches/nectarines; USU warns excess N reduces color/firmness.

Obiectiv: Fruit integrity and early sizing.

Risc descris: Ca foliar cannot guarantee absence of soft spot or splitting.

Cultură / taxon: Nectarin · Prunus persica var. nucipersica

Rol agronomic: K supports fill, but high leaf K (>3% in Penn State table) is not a target.

Mod de aplicare: 700–1000 L/ha

Condiție de aplicare: Penn State peach/nectarine K normal 2,10–3,00%, high >3,00%; Ca normal 1,90–3,50%; Mg 0,20–0,40%.

Obiectiv: Umplerea fructului fără antagonisme.

Risc descris: Automatic intensive Ca/K schedules without tissue/water context may be unnecessary.