THE G.D.C TRELLIS DESIGN CONSISTS OF A HORIZONTALLY DIVIDED CANOPY. IT WAS INVENTED IN NEW YORK DURING THE 1960s BY PROFESSOR SHAULIS.

THE VINES HAVE A TRUNK 1,80 METRES HIGH, WHICH IS TRAINED TO BILATERAL CORDONS WITH THE SPURS FACING DOWN TO THE GROUND. SHOOTS ARE POSITIONED DOWNWARD CREATING A CANOPY THAT HAS THE APPEARANCE OF TWO CURTAINS ON EACH SIDE.

IT ENCOURAGES HIGHER YIELDS THAN MOST OTHER TRAINING METHODS AND GIVES SUFFICIENT SPACE TO HARVEST MECHANICALLY. IT ALLOWS MORE SUNLIGHT TO REACH THE FRUIT, BUT IT IS NOT RECOMMENDED FOR WARM REGIONS.

THE TRELLISES SUPPORT 4 PERMANENT BRANCHES, SO IT IS IMPORTANT TO USE QUALITY MATERIALS AND THIS MAKES IT AN EXPENSIVE SYSTEM.