Dr. Rob Crassweller, Penn State Professor of Horticulture
In most parts of the state we just came out of a carbon deficit situation. Research by Alan Lakso indicates that chemical thinners work optimally with deficits in the minus 20’s. Fruit size where the potential for a crop exists is rapidly increasing and in some areas may require stronger rates and more active compounds.
Northern Allegheny County
| Date |
Daily C Balance |
Total Demand |
Sup/Dem/Bal |
| 28-Apr |
48.39 |
24.03 |
24.36 |
| 29-Apr |
72.26 |
32.2 |
40.06 |
| 30-Apr |
62.96 |
37.8 |
25.16 |
| 1-May |
56.31 |
60.16 |
-3.85 |
| 2-May |
49.33 |
93.96 |
-44.63 |
| 3-May |
65.98 |
106.88 |
-40.90 |
| 4-May |
71.73 |
98.22 |
-26.48 |
| 5-May |
66.86 |
66.33 |
0.53 |
| 6-May |
92.41 |
58.26 |
34.16 |
| 7-May |
74.52 |
57.81 |
16.71 |
| 8-May |
45.97 |
68.85 |
-22.88 |
| 9-May |
79.14 |
82.6 |
-3.46 |
| 10-May |
91.48 |
97.35 |
-5.88 |
| 11-May |
107.44 |
64.96 |
42.47 |
Southwestern Adams County
| Date |
Daily C Balance |
Total Demand |
Sup/Dem/Balance |
| 28-Apr |
74.94 |
27.63 |
47.30 |
| 29-Apr |
97.54 |
36.9 |
60.65 |
| 30-Apr |
72.49 |
42.19 |
30.30 |
| 1-May |
85.5 |
43.75 |
41.76 |
| 2-May |
65.69 |
39.82 |
25.87 |
| 3-May |
95.83 |
48.57 |
47.26 |
| 4-May |
90.75 |
61.83 |
28.91 |
| 5-May |
77.2 |
83.6 |
-6.39 |
| 6-May |
45.88 |
83.79 |
-37.91 |
| 7-May |
47.88 |
72.62 |
-24.74 |
| 8-May |
50.16 |
54.6 |
-4.44 |
| 9-May |
63.75 |
49.45 |
14.30 |
| 10-May |
100.09 |
59.85 |
40.24 |
| 11-May |
116.34 |
62.29 |
54.04 |
Juniata County
| Date |
Daily C Balance |
Total Demand |
Sup/Dem/Bal |
| 28-Apr |
32.32 |
14.83 |
17.49 |
| 29-Apr |
41.18 |
14.46 |
26.73 |
| 30-Apr |
35.29 |
19.29 |
16.00 |
| 1-May |
29.7 |
24.01 |
5.68 |
| 2-May |
14.02 |
26.95 |
-12.92 |
| 3-May |
26.71 |
6.09 |
20.63 |
| 4-May |
30.54 |
35.61 |
-5.07 |
| 5-May |
31.19 |
19.22 |
11.97 |
| 6-May |
25.93 |
23.97 |
1.96 |
| 7-May |
21 |
25.92 |
-4.92 |
| 8-May |
21.62 |
28.47 |
-6.85 |
| 9-May |
40.36 |
24.34 |
16.02 |
| 10-May |
60.82 |
19.15 |
41.68 |
| 11-May |
70.38 |
20.8 |
49.58 |
Southeastern Berks County
| Date |
Daily C Balance |
Total Demand |
Sup/Dem/Bal |
| 28-Apr |
75.26 |
37.93 |
37.33 |
| 29-Apr |
86.06 |
38.8 |
47.27 |
| 30-Apr |
74.72 |
46.74 |
27.98 |
| 1-May |
62.42 |
60.35 |
2.07 |
| 2-May |
33.72 |
86.42 |
-52.70 |
| 3-May |
43.99 |
105.7 |
-61.71 |
| 4-May |
59.96 |
115.04 |
-55.08 |
| 5-May |
57.44 |
104.76 |
-47.33 |
| 6-May |
44.36 |
89.65 |
-45.29 |
| 7-May |
61.82 |
65.01 |
-3.20 |
| 8-May |
62.41 |
61.67 |
0.74 |
| 9-May |
46.39 |
69.62 |
-23.23 |
| 10-May |
102.43 |
65.83 |
36.60 |
| 11-May |
114.82 |
67.16 |
47.66 |
Erie County
| Date |
Daily C Balance |
Total Demand |
Sup/Dem/Bal |
| 28-Apr |
26.08 |
18.49 |
7.58 |
| 29-Apr |
34.12 |
24.91 |
9.21 |
| 30-Apr |
40.58 |
28.41 |
12.16 |
| 1-May |
38.82 |
20.26 |
18.56 |
| 2-May |
35.73 |
14.55 |
21.18 |
| 3-May |
32.07 |
20.31 |
11.76 |
| 4-May |
40.76 |
21.62 |
19.15 |
| 5-May |
47.53 |
15.88 |
31.65 |
| 6-May |
50.57 |
19.62 |
30.95 |
| 7-May |
54.74 |
17.96 |
36.78 |
| 8-May |
58.34 |
16.54 |
41.79 |
| 9-May |
53.23 |
22.69 |
30.53 |
| 10-May |
54.62 |
19.3 |
35.32 |
| 11-May |
64.36 |
21.45 |
42.90 |
