Primo

Primo treated Grapes, cv. Perlette, grown in an orchard had on average a bigger leaf size (highest increase of 70 %), the leaves contained 3.1 % less N, 7.5 % more P, 1.9 % less K, 1.5 % more B, 1.1% more Fe, 1 % more Mn and contained more chlorophyll (highest increase of 19 %), the grapes had on average 31.7 % more bunches/cane, a 7.1 % longer rachis, 3.8 % bigger bunches (not sign), 9.7 % heavier bunches (not sign), 5.6 % more berries/bunch (not sign), 4.3 % bigger berries, a 7 % higher 100 berry weight, had a significant higher berry setting % and a lower berry drop %, the berries had a higher SSC content, a higher pH, containted more ascorbic acid and more total sugars as compared to the untreated control. (The triple applications gave in general the best results with the highest increases)