A Study of the Resistance of Some Varieties of Potato to the Potato Leafhopper Empoasca Fabae (Harris). |
Contents
REVIEW OF LITERATURE ON RESISTANT VARIETIES | 15 |
OBSERVATIONS OF RESISTANT MID SUSCEPTIBLE VARIETIES | 19 |
INVESTIGATION OF FACTORS POSSIBLY ASSOCIATED WITH RESISTANCE | 98 |
SUMMARY 14ab | 142 |
ACKNOWLEDGMENTS | 145 |