TY - BOOK AU - BUTTER, Nachhattar Singh TI - Virus--vector relationship and control of tomato leafcurl virus U1 - T 635.642 B98V PY - 1973/// CY - Ludhiana PB - PAU KW - VIRUS DISEASES OF PLANTS KW - CONTROL KW - ENTOMOLOGY KW - LEAFCURL VIRUS KW - TOMATO KW - TOMATOES -- DISEASES & PESTS KW - VECTOR N2 - Tomato leafcurl starts as yellow, round blotches on the leaflets of the affect tomato plant The blotches gradually enlarge and diffuse into yellowing Plants also show twisting, curling, rolling and puckering of leaves and tum bushy in appearance and remai ER -