Cougarblight Fire Blight Risk Model

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Cougarblight Fire Blight
Risk Model (Version 2001) Tim Smith, WSU Extension

More information about fire blight :

Daily Degree Hour Estimation Look-up Chart

Daytime High Temperature Degree Hours per day if Night low is 49.9F or Lower Degree Hours per day if Night low is 50F or Higher Daytime High Temperature Degree Hours per day if Night low is 49.9F or Lower Degree Hours per day if Night low is 50F or Higher

60 0 0 83 243 280

62 2 5 84 257 292

63 5 12 85 266 302

64 10 22 86 274 310

65 14 29 87 280 315

66 20 35 88 285 320

67 26 42 89 288 325

68 33 50 90 290 330

69 42 60 92 287 335

70 52 70 93 284 333

71 62 80 94 280 330

72 74 92 95 274 325

73 87 105 96 267 317

74 100 120 97 260 309

75 115 134 98 254 302

76 130 151 99 246 293

77 146 169 100 238 285

78 162 189 101 230 275

79 178 209 102 222 268

80 195 230 103 216 259

81 212 250 104 208 250

82 228 265 105 200 240

Daytime High Temperature	Degree Hours per day if Night low is 49.9F or Lower	Degree Hours per day if Night low is 50F or Higher	Daytime High Temperature	Degree Hours per day if Night low is 49.9F or Lower	Degree Hours per day if Night low is 50F or Higher
60	0	0	83	243	280
62	2	5	84	257	292
63	5	12	85	266	302
64	10	22	86	274	310
65	14	29	87	280	315
66	20	35	88	285	320
67	26	42	89	288	325
68	33	50	90	290	330
69	42	60	92	287	335
70	52	70	93	284	333
71	62	80	94	280	330
72	74	92	95	274	325
73	87	105	96	267	317
74	100	120	97	260	309
75	115	134	98	254	302
76	130	151	99	246	293
77	146	169	100	238	285
78	162	189	101	230	275
79	178	209	102	222	268
80	195	230	103	216	259
81	212	250	104	208	250
82	228	265	105	200	240