BEMESTINGSRIGLYNE VIR DIE TAFELDRUIFBEDRYF

INHOUDSOPGAWE

– Bemesting volgens produksie ______________________________________________ 44 – Bemesting volgens grondontledings __________________________________________ 46 – Bemesting volgens groeikrag _ _____________________________________________ 47 – Bemesting volgens blaarontledings _ _________________________________________ 49 – Fosfor (P) _ ____________________________________________________________ 49 – Kalium (K) _____________________________________________________________ 52 – Kalsium (Ca) _ __________________________________________________________ 58 – Magnesium (Mg) _ ________________________________________________________ 60 – Swawel (S) _____________________________________________________________ 63 • MIKRO- OF SPOORELEMENTE _______________________________________________ 65 – Yster (Fe) _ ____________________________________________________________ 65 – Mangaan (Mn) ___________________________________________________________ 67 – Sink (Zn) ______________________________________________________________ 70 – Koper (Cu) _____________________________________________________________ 72 – Boor (B) _ _____________________________________________________________ 74 – Molibdeen (Mo) __________________________________________________________ 77 – Chloor (Cl) _____________________________________________________________ 77 • OPSOMMING _ ___________________________________________________________ 79 6 PRAKTIESE RIGLYNE VIR DIE IMPLEMENTERING VAN DIE BEMESTINGSPROGRAM ( Bennie Diedericks) ___________________________________________________________ 81 • INLEIDING _ _____________________________________________________________ 81 • IMPLEMENTERING VAN BEMESTINGSPROGRAM _ _______________________________ 82 • BEMESTINGSPRODUKTE _ __________________________________________________ 85 • IMPAK VAN MISSTOWWE OP GROND _ ________________________________________ 87 – Grondversuring __________________________________________________________ 87 – Verhoging in soutlading ____________________________________________________ 88 – Grondbiologie _ _________________________________________________________ 88 • ORGANIESE MISSTOWWE _ _________________________________________________ 89 • MIKROFYN KALK EN GIPS __________________________________________________ 90 • ROTSFOSFAAT _ __________________________________________________________ 91 • DEKLAE EN DEKGEWASSE __________________________________________________ 91 • BLAARVOEDING _ _________________________________________________________ 92 • OPSOMMING ____________________________________________________________ 93 7 DIE VERWANTSKAP TUSSEN BEMESTING, DIE VOEDINGSTOFSTATUS VAN ’N WINGERD EN DRUIFKWALITEIT ( Pieter Raath & Kobus Conradie) _________________ 95 • STIKSTOF _______________________________________________________________ 96 • FOSFOR ________________________________________________________________ 98 • KALIUM _ _______________________________________________________________ 98 • KALSIUM _ ______________________________________________________________ 99 • MAGNESIUM ___________________________________________________________ 101 • OPSOMMING _ __________________________________________________________ 103 8 BEMESTING VAN ONDERSTOKMOEDERBLOKKE EN KWEKERYGRONDE ( Dawid Saayman) ____________________________________________________________ 105 • ONDERSTOKMOEDERBLOKKE _ _____________________________________________ 105 • KWEKERYE _____________________________________________________________ 106 9 VERWYSINGS ___________________________________________________________ 109

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