(Solved): Background Information Banana Stock Nursery Planted February 2013 Pahokee, FL Abuts Lake Okeechobee ...

Background Information Banana stock nursery Planted February 2013 Pahokee, FL Abuts Lake Okeechobee Soil has 27% organic matter, mapped as Torry muck, but actually lake bottom muck with layers of muck and sand. Many varieties of bananas and plantains grown Irrigation and fertilization • 1.25” of rainfall in January • Irrigated with municipal water to supplement - pH 6.5 – EC 0.8 ds/m • Greater than 40” rain over the summer. Fertilized in November with 1lb 8-2-12-4Mg per plant Pest Control • Weeds are manage with herbicides and hoeing • Insects are controlled organically with Bt and soaps Diseases are controlled organically with copper and beneficial bacteria Soil Test Character Value грн 8.0 238 2936 524 Plant Analysis Element Value Range N% 4.1 3.5-4.5 P% 0.23 0.20-0.40 K% 2.81 2.0-5.0 Mg% 0.21 0.20-0.80 Ca% 0.45 0.4-1.50 Fe ppm 138 100-500 Mn ppm 10 100-1000 B ppm 16 10-50 Cu ppm 9 6-25 Zn ppm 17 15-200 Description of symptoms • Interveinal chlorosis on sub-apical leaves (during dry season) • Eventually entire leaf blade chlorotic except midrib • Affecting 3 plants out of 85 and plants not near each other • Only suckers affected, mother plant has no symptoms • Symptoms disappear after rain season starts Early Symptoms What is the problem? What should the grower do to resolve the problem?