Literature Cited 19 SPRAY SCHEDULE FOR THE CONTROL OF PECAN DISEASES AND INSECTS Name of spray and Insect or Spray materials, Remarks time of application disease to be per 100 gallon controlled Prepollination Scab, downy Zineb,[A] 2 pounds If phylloxera is a spray, when first spot, vein spot problem, see page leaves are 14. one-third grown First cover spray, Scab, downy Zineb, 2 pounds when tips of small spot, vein nuts have turned spot, leaf brown and nut blotch, brown casebearer eggs are leaf spot observed Pecan nut 3 pounds 50 percent casebearer, wettable DDT, or 1 pecan leaf pound 25 percent casebearer wettable parathion, or 1 pint nicotine sulfate plus 2 quarts summer oil, or 5 pounds 40 percent wettable toxaphene, or 3 pounds 25 percent wettable malathion Rosette Zinc sulfate, 2 If rosette is a pounds problem, include zinc sulfate in spray. Second cover spray, Scab, downy Zineb, 2 pounds 3 to 4 weeks after spot, vein Zinc sulfate, 2 first cover spray spot, leaf pounds blotch, brown leaf spot Rosette Third cover spray, Scab, brown Zineb, 2 pounds If aphid or mite 3 to 4 weeks after leaf spot, infestations are second cover spray liver spot, severe, use aphids, mites insecticides recommended on page 13. Walnut If walnut caterpillar, caterpillars or fall webworm fall webworms are a problem, use insecticides recommended on pages 15 and 16. Rosette Zinc sulfate, 2