Pa. 
Ind. 
N. Je 
Ree 
a 6. 
An Investigation of Methods for Controlling Certain Insects 
and Mites Affecting Greenhouse Ornamental and Vegetable Crops. 
To determine most effective and eccnomical measures for control 
of insects and mites causing injury to roses, chrysanthemms, 
snapdragons, carnations, orchids, etc., as well as greenhouse 
tomatoes and cther food plants. 
Zoole, Ente 957 Coop. ARS 
C. Ornamental Plant Insects 
Insect Problems of Shade Trees, Shrubs, and Fruit Trees 
in the Nursery. To (1) develop a complete annotated bibliography 
of insects attacking nursery plantings; (2) determine the major 
pest problems occurring in Indiana; (3) investigate the life 
history and habits cf these major pests; (4) determine cultural 
and related practices in plantings and nurseries which may be 
factors in the presence or absence of pests, or which may affect 
their economic importance; and (5) to find chemical and/or 
mechanical means of completely controlling pests in nurseries 
so that pest free plants can be grown and shipped inter- or 
intra- state. 
Systemic Insecticides for the Control of Insects and Spider 
Mites Attack Greenhouse Flowers, Ornamental Shruts and Flowers 
and Nursery Plants. (1) Learn mechanics of action of systemic 
insecticides on ornamentals by determining: methods and rate of 
absorption thru roots, stems, seeds and forage; parts of plant 
to which systemics are translocated; length cf effectiveness of 
systemics. Determine (2) types of insects and spider mites which 
are controllable by systemics; (3) economics of control by sys- 
temics as compared with previous control. 
Ent. 213 
A Study of Insects and Mites Affecting Nurse Stock, Forest 
and Ornamental Trees and Shrubs in Rhode Island. To (1) obtain 
essential information on seasonal occurrence and economic impor- 
tance of insect and mite pests of nursery stock, ornamental trees 
and shrubs and forest trees; (2) investigate biology of insect 
and mite species when such information has not been heretofore 
reported; (3) determine relative effectiveness of various new 
synthetic organic chemicals as insecticides and acaracides for 
control of the species of economic importance; (4) investigate 
comparative vulnerability of insect and mite species in various 
stages of development to control measures, and (5) correlate 
appearance of most vulnerable stages in development of pest orga- 
nisms with host plant development under R.I. conditions. 
Pl. Path., Wnt. 6C4 
