试验设于佛州中部Barnum(巴纳姆)城柑桔研究中心,试材为粗柠檬砧凤梨甜橙植株,1960年定植,栽距为6×7.5米,4.5×6和3×4.5米,每亩分别有80、24和48株,1967-68年记载第一次果实产量。1966年,在3×4.5米和4.5×6米处理中每年修整成绿篱; The test was conducted in Citrus Research Center of Barnum in central Florida. The test material was pineapple orange with coarse lemon root, which was planted in 1960 with planting distance of 6 × 7.5m, 4.5 × 6 and 3 × 4.5m, There were 80, 24 and 48 plants per acre, respectively. The first fruit production was recorded in 1967-68. In 1966, hedges were trimmed into hedges each year in 3 × 4.5 meters and 4.5 × 6 meters treatments;