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Early Blight
Degree Days Worksheet and Late Blight update 2008 |
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| Early Blight
Threshold = 650 Degree Days |
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| The last Date
the Degree Days were updated is in bold. |
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| Late Blight Update: |
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| For Late blight
control, based on the timing of the
disease threshold from previous years, conditions
favorable for late blight |
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reached around the 15th of July. As of July 18th, late blight severity units
have started to accumulate and are projected to |
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| reach the
disease threshold within the next week for the Hooper, Blanca, and Sargent
areas. Fungicide
applications for control of late blight |
| should be made
prior to row closure and at least one to two weeks prior to July 15th. For current late
blight updates, please continue |
| to check this
webpage throughout the summer. |
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| Early Blight Degree Days Worksheet: |
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2008 |
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Degree |
Degree |
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Days |
Days |
30 yr avg. |
30 yr avg. |
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| Date |
High temp |
Low temp |
above 45 |
D-days |
positive |
Cumulative |
2007 |
positive |
Cumulative |
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| 5/5/2008 |
72.0 |
34.8 |
1 |
8.4 |
8.4 |
8.4 |
0.0 |
2.6 |
2.6 |
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| 5/6/2008 |
68.6 |
32.1 |
1 |
5.3 |
5.3 |
13.8 |
0.0 |
2.2 |
4.8 |
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| 5/7/2008 |
68.1 |
36.2 |
1 |
7.2 |
7.2 |
20.9 |
0.0 |
2.5 |
7.2 |
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| 5/8/2008 |
60.8 |
31.6 |
1 |
1.2 |
1.2 |
22.1 |
2.7 |
2.9 |
10.1 |
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| 5/9/2008 |
65.4 |
25.3 |
1 |
0.4 |
0.4 |
22.5 |
6.9 |
3.8 |
13.9 |
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| 5/10/2008 |
56.2 |
28.7 |
1 |
-2.6 |
0.0 |
22.5 |
17.6 |
4.0 |
17.9 |
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| 5/11/2008 |
70.7 |
24.6 |
1 |
2.7 |
2.7 |
25.1 |
29.7 |
4.8 |
22.6 |
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| 5/12/2008 |
69.0 |
38.9 |
1 |
9.0 |
9.0 |
34.1 |
42.4 |
3.7 |
26.3 |
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| 5/13/2008 |
57.2 |
32.0 |
1 |
-0.4 |
0.0 |
34.1 |
54.0 |
3.7 |
30.0 |
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| 5/14/2008 |
60.9 |
27.9 |
1 |
-0.6 |
0.0 |
34.1 |
67.7 |
4.7 |
34.7 |
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| 5/15/2008 |
54.6 |
36.1 |
1 |
0.4 |
0.4 |
34.4 |
78.0 |
5.6 |
40.3 |
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| 5/16/2008 |
64.7 |
28.0 |
1 |
1.4 |
1.4 |
35.8 |
80.8 |
5.2 |
45.5 |
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| 5/17/2008 |
71.4 |
39.8 |
1 |
10.6 |
10.6 |
46.4 |
89.0 |
4.8 |
50.3 |
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| 5/18/2008 |
75.9 |
37.5 |
1 |
11.7 |
11.7 |
58.1 |
98.1 |
6.3 |
56.6 |
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| 5/19/2008 |
81.8 |
41.9 |
1 |
16.9 |
16.9 |
74.9 |
110.9 |
6.2 |
62.8 |
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| 5/20/2008 |
79.7 |
43.9 |
1 |
16.8 |
16.8 |
91.7 |
119.5 |
7.1 |
69.9 |
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| 5/21/2008 |
74.4 |
48.5 |
1 |
16.5 |
16.5 |
108.2 |
127.6 |
7.2 |
77.1 |
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| 5/22/2008 |
52.7 |
36.1 |
1 |
-0.6 |
0.0 |
108.2 |
132.1 |
7.9 |
85.0 |
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| 5/23/2008 |
52.3 |
33.5 |
1 |
-2.1 |
0.0 |
108.2 |
132.1 |
7.6 |
92.6 |
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| 5/24/2008 |
54.5 |
30.0 |
1 |
-2.8 |
0.0 |
108.2 |
132.1 |
7.6 |
100.2 |
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| 5/25/2008 |
71.7 |
28.8 |
1 |
5.3 |
5.3 |
113.4 |
138.9 |
7.4 |
107.5 |
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| 5/26/2008 |
71.7 |
37.1 |
1 |
9.4 |
9.4 |
122.8 |
146.9 |
8.3 |
115.8 |
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| 5/27/2008 |
73.5 |
37.4 |
1 |
10.5 |
10.5 |
133.3 |
158.5 |
8.6 |
124.4 |
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| 5/28/2008 |
75.9 |
33.9 |
1 |
9.9 |
9.9 |
143.2 |
171.8 |
8.3 |
132.7 |
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| 5/29/2008 |
70.0 |
41.1 |
1 |
10.6 |
10.6 |
153.7 |
183.8 |
8.2 |
140.9 |
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| 5/30/2008 |
73.6 |
33.1 |
1 |
8.3 |
8.3 |
162.1 |
190.9 |
8.9 |
149.8 |
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| 5/31/2008 |
77.8 |
37.0 |
1 |
12.4 |
12.4 |
174.5 |
201.7 |
9.2 |
159.0 |
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| 6/1/2008 |
82.1 |
39.2 |
1 |
15.7 |
15.7 |
190.1 |
212.8 |
8.5 |
167.4 |
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| 6/2/2008 |
78.1 |
39.9 |
1 |
14.0 |
14.0 |
204.1 |
226.1 |
8.6 |
176.0 |
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| 6/3/2008 |
73.9 |
42.2 |
1 |
13.1 |
13.1 |
217.2 |
235.7 |
9.2 |
185.2 |
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| 6/4/2008 |
71.3 |
40.5 |
1 |
10.9 |
10.9 |
228.1 |
246.2 |
10.0 |
195.2 |
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| 6/5/2008 |
55.0 |
37.9 |
1 |
1.5 |
1.5 |
229.5 |
260.9 |
11.2 |
206.4 |
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| 6/6/2008 |
72.4 |
32.9 |
1 |
7.7 |
7.7 |
237.2 |
268.7 |
11.7 |
218.0 |
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| 6/7/2008 |
77.9 |
34.1 |
1 |
11.0 |
11.0 |
248.2 |
269.3 |
11.0 |
229.0 |
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| 6/8/2008 |
69.8 |
37.3 |
1 |
8.6 |
8.6 |
256.7 |
276.7 |
11.0 |
240.0 |
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| 6/9/2008 |
72.4 |
29.3 |
1 |
5.9 |
5.9 |
262.6 |
288.5 |
11.0 |
251.0 |
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| 6/10/2008 |
79.4 |
36.7 |
1 |
13.1 |
13.1 |
275.6 |
302.6 |
10.9 |
261.8 |
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| 6/11/2008 |
69.0 |
35.3 |
1 |
7.2 |
7.2 |
282.8 |
317.6 |
11.7 |
273.5 |
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| 6/12/2008 |
68.6 |
26.9 |
1 |
2.8 |
2.8 |
285.5 |
327.0 |
12.6 |
286.1 |
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| 6/13/2008 |
75.7 |
30.9 |
1 |
8.3 |
8.3 |
293.8 |
338.4 |
13.3 |
299.3 |
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| 6/14/2008 |
82.0 |
35.4 |
1 |
13.7 |
13.7 |
307.5 |
352.1 |
13.7 |
313.0 |
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| 6/15/2008 |
83.3 |
44.7 |
1 |
19.0 |
19.0 |
326.5 |
372.0 |
13.4 |
326.4 |
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| 6/16/2008 |
80.1 |
48.0 |
1 |
19.1 |
19.1 |
345.6 |
392.1 |
13.6 |
340.0 |
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| 6/17/2008 |
83.0 |
44.7 |
1 |
18.9 |
18.9 |
364.4 |
412.2 |
13.7 |
353.7 |
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| 6/18/2008 |
84.8 |
41.8 |
1 |
18.3 |
18.3 |
382.7 |
430.1 |
14.7 |
368.4 |
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| 6/19/2008 |
80.2 |
42.7 |
1 |
16.5 |
16.5 |
399.2 |
449.8 |
14.1 |
382.3 |
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| 6/20/2008 |
80.5 |
42.0 |
1 |
16.3 |
16.3 |
415.4 |
473.3 |
15.4 |
397.7 |
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| 6/21/2008 |
79.1 |
42.3 |
1 |
15.7 |
15.7 |
431.1 |
494.7 |
16.1 |
413.8 |
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| 6/22/2008 |
73.4 |
42.0 |
1 |
12.7 |
12.7 |
443.8 |
514.4 |
16.1 |
429.9 |
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| 6/23/2008 |
74.4 |
41.2 |
1 |
12.8 |
12.8 |
456.6 |
534.8 |
16.2 |
446.0 |
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| 6/24/2008 |
73.0 |
42.5 |
1 |
12.8 |
12.8 |
469.4 |
556.7 |
15.8 |
461.8 |
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| 6/25/2008 |
81.8 |
43.0 |
1 |
17.4 |
17.4 |
486.8 |
579.6 |
16.1 |
477.9 |
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| 6/26/2008 |
79.3 |
40.7 |
1 |
15.0 |
15.0 |
501.8 |
603.1 |
15.9 |
493.8 |
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| 6/27/2008 |
83.9 |
46.3 |
1 |
20.1 |
20.1 |
521.9 |
619.7 |
17.8 |
510.4 |
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| 6/28/2008 |
83.1 |
46.8 |
1 |
20.0 |
20.0 |
541.8 |
637.7 |
17.2 |
528.2 |
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| 6/29/2008 |
75.8 |
48.5 |
1 |
17.2 |
17.2 |
559.0 |
657.4 |
17.2 |
545.4 |
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| 6/30/2008 |
76.4 |
44.7 |
1 |
15.6 |
15.6 |
574.5 |
679.8 |
17.1 |
562.5 |
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| 7/1/2008 |
79.0 |
45.3 |
1 |
17.2 |
17.2 |
591.7 |
702.9 |
17.5 |
580.0 |
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| 7/2/2008 |
81.6 |
46.6 |
1 |
19.1 |
19.1 |
610.8 |
727.6 |
17.9 |
597.9 |
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| 7/3/2008 |
80.7 |
44.7 |
1 |
17.7 |
17.7 |
628.5 |
751.5 |
18.1 |
616.0 |
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| 7/4/2008 |
84.9 |
43.8 |
1 |
19.4 |
19.4 |
647.8 |
772.5 |
17.7 |
633.6 |
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| 7/5/2008 |
80.6 |
46.8 |
1 |
18.7 |
18.7 |
666.5 |
789.2 |
18.1 |
651.7 |
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| 7/6/2008 |
76.9 |
52.4 |
1 |
19.7 |
19.7 |
686.2 |
808.6 |
17.6 |
669.3 |
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| 7/7/2008 |
72.2 |
52.0 |
1 |
17.1 |
17.1 |
703.3 |
827.4 |
18.2 |
687.4 |
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| 7/8/2008 |
78.1 |
45.6 |
1 |
16.9 |
16.9 |
720.1 |
848.0 |
18.1 |
705.5 |
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| 7/9/2008 |
79.9 |
43.9 |
1 |
16.9 |
16.9 |
737.0 |
868.1 |
17.9 |
723.3 |
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| 7/10/2008 |
83.2 |
43.7 |
1 |
18.5 |
18.5 |
755.5 |
888.6 |
18.8 |
742.1 |
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| 7/11/2008 |
81.6 |
47.0 |
1 |
19.3 |
19.3 |
774.8 |
906.1 |
18.4 |
760.4 |
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| 7/12/2008 |
77.6 |
45.8 |
1 |
16.7 |
16.7 |
791.5 |
926.7 |
18.3 |
778.7 |
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| 7/13/2008 |
79.7 |
42.4 |
1 |
16.1 |
16.1 |
807.5 |
944.8 |
17.9 |
796.6 |
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| 7/14/2008 |
82.6 |
46.2 |
1 |
19.4 |
19.4 |
826.9 |
965.2 |
18.4 |
815.0 |
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| 7/15/2008 |
84.1 |
45.8 |
1 |
20.0 |
20.0 |
846.9 |
984.8 |
17.7 |
832.7 |
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| 7/16/2008 |
84.7 |
45.0 |
1 |
19.9 |
19.9 |
866.7 |
1007.2 |
18.1 |
850.7 |
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| 7/17/2008 |
81.7 |
45.1 |
1 |
18.4 |
18.4 |
885.1 |
1030.1 |
18.1 |
868.8 |
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| 7/18/2008 |
78.5 |
49.4 |
1 |
19.0 |
19.0 |
904.1 |
1052.8 |
18.1 |
886.9 |
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| 7/19/2008 |
83.6 |
46.0 |
1 |
19.8 |
19.8 |
923.9 |
1075.4 |
18.4 |
905.3 |
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| 7/20/2008 |
83.4 |
41.8 |
1 |
17.6 |
17.6 |
941.5 |
1093.8 |
17.6 |
922.9 |
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| 7/21/2008 |
82.7 |
47.8 |
1 |
20.3 |
20.3 |
961.7 |
1115.2 |
17.7 |
940.6 |
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| 7/22/2008 |
84.7 |
48.4 |
1 |
21.6 |
21.6 |
983.3 |
1137.8 |
17.8 |
958.3 |
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| 7/23/2008 |
80.7 |
48.5 |
1 |
19.6 |
19.6 |
1002.9 |
1160.6 |
17.5 |
975.8 |
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| 7/24/2008 |
81.1 |
50.7 |
1 |
20.9 |
20.9 |
1023.8 |
1183.9 |
17.2 |
993.0 |
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| 7/25/2008 |
77.9 |
52.5 |
1 |
20.2 |
20.2 |
1044.0 |
1206.4 |
17.8 |
1010.7 |
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| 7/26/2008 |
77.2 |
51.3 |
1 |
19.3 |
19.3 |
1063.2 |
1227.3 |
17.8 |
1028.5 |
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| 7/27/2008 |
84.5 |
50.4 |
1 |
22.5 |
22.5 |
1085.7 |
1249.3 |
17.4 |
1045.9 |
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| 7/28/2008 |
80.7 |
51.1 |
1 |
20.9 |
20.9 |
1106.6 |
1269.9 |
18.1 |
1064.0 |
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| 7/29/2008 |
82.9 |
47.9 |
1 |
20.4 |
20.4 |
1127.0 |
1290.8 |
18.1 |
1082.1 |
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| 7/30/2008 |
83.6 |
46.4 |
1 |
20.0 |
20.0 |
1147.0 |
1312.5 |
18.7 |
1100.7 |
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| 7/31/2008 |
85.9 |
46.2 |
1 |
21.1 |
21.1 |
1168.0 |
1334.4 |
18.0 |
1118.7 |
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| 8/1/2008 |
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0 |
0.0 |