. Cooperative economic insect report. Insect pests Control United States Periodicals. - 57 - Table 2 — (Cont'd) :Average Number :of Borers per •100 Plants :l957 19 58 State Iowa (cont'd) District VIII 430 District IX 195 District X 383 District XI 358 District XII 367 State mean 419 Kansas (Ins. Sur.) Northeast 267 North Central 20 Southeast East Central 172 Central 18 State mean 119 State mean comparable districts (2) 143 Maryland (Agr. Ext. Ser., Ins. Sur.). Average Number of Borers per 100 Plants TWE7 1958 151 171 296 146 131 166 263 40 19 105 107 151 Allegany 31 26 Anne Arundel 32 48 Balti
. Cooperative economic insect report. Insect pests Control United States Periodicals. - 57 - Table 2 — (Cont'd) :Average Number :of Borers per •100 Plants :l957 19 58 State Iowa (cont'd) District VIII 430 District IX 195 District X 383 District XI 358 District XII 367 State mean 419 Kansas (Ins. Sur.) Northeast 267 North Central 20 Southeast East Central 172 Central 18 State mean 119 State mean comparable districts (2) 143 Maryland (Agr. Ext. Ser., Ins. Sur.). Average Number of Borers per 100 Plants TWE7 1958 151 171 296 146 131 166 263 40 19 105 107 151 Allegany 31 26 Anne Arundel 32 48 Baltimore 39 45 Calvert 27 24 Caroline 49 371 Carroll 84 85 Cecil 30 67 Charles 10 21 Dorchester 105 222 Frederick 77 16 Garrett 4 7 Harford 45 61 Howard 21 66 Kent 43 74 Montgomery 34 47 Prince Georges 11 23 Queen Annes 20 129 St. Marys 94 75 Somerset 150 89 Talbot 95 113 Washington 43 66 Wicomico 90 312 Worcester 243 175 State mean 60 94 (Ext. Ser.) Southwest (Ext. Ser. Ins. Sur.) Northeast 9 4 Southeast 9 7 State mean 9 7 Minnesota (State Dept. of Agr.) West Central 69 23 Central 48 10 East Central 19 3 Southwest 208 46 South Central 123 16 Southeast 40 6 State mean 83 16 Missouri* District I 685 161 District II 580 89 District III 318 131 District IV 372 137 District V 331 69 District VI 40 22 District VII 32 District IX 95 123 State mean 346 96 State mean comparable districts (5) 399 109 Nebraska* (Agr. Exp. Sta., Ext Ser. , Ins. Sur.) Northeast 514 330 East 298 299 Southeast 127 276 North 217 88 Central 310 177 South 183 160 Southwest 74 65 Northwest 37 22 State mean 220 177 * Crop Reporting Districts. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Bureau of Entomology and Plant Quarantine; United States. Plant Pest Control Branch; United States. Plant Pest Control Division; United State
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