Four season cultural control of boll weevil SPRING Use timely fand preparatioo SUMMER Change the hiclogical and physical and planding environments AMer the Ellminate the over-wIntering late season habitat food supply 773
Four season cultural control of boll weevil
Host Plant Resistance to Insects
Host Plant Resistance to Insects
Early History of Plant Resistance Underhill wheat,1792,resistant to Hessian fly. Winter majetin variety of apple,1831, resistant to woolly apple aphid. American rootstocks of grapes,mid-1800s, resistant to grape phylloxera
Early History of Plant Resistance Early History of Plant Resistance Underhill wheat, 1792, resistant to Hessian fly. Winter majetin variety of apple, 1831, resistant to woolly apple aphid. American rootstocks of grapes, mid-1800s, resistant to grape phylloxera
Mechanisms or Categories of Plant Resistance (Reginald Painter,1951) Antibiosis: Physiology of the insect affected. Antixenosis (Nonpreference): Behavior affected. Tolerance:The ability of the plant to withstand or recover from damage caused by insect populations equal to those on susceptible cultivar
Mechanisms or Categories of Plant Mechanisms or Categories of Plant Resistance (Reginald Painter, 1951) Resistance (Reginald Painter, 1951) Antibiosis: Physiology of the insect affected. Antixenosis (Nonpreference): Behavior affected. Tolerance: The ability of the plant to withstand or recover from damage caused by insect populations equal to those on a susceptible cultivar
Reginald Painter and his last student,Jim Webster
Reginald Painter and his last student, Jim Webster