Houlton ME NoBlight Table
Your late blight fungicide spray dates — optional
You can enter late blight fungicide spray dates to see estimates for the next recommended spray date. Type the month and day number of each spray date, for example: 8/5 or 08/05, into the yellow box below. The year is assumed to be this year. You can also enter dates as the full month name or 3-letter month name abbreviation and a day number (e.g. August 5, or Aug 5). The page automatically updates when you change the dates entered.
Privacy: The dates you enter stay on your own device and do not leave your web browser. Your browser will remember the date(s) you enter for the next time you visit this page. If you want to erase the dates you entered, use the Clear All Dates button below.
If this browser no longer has the spray dates you entered before, paste your saved copy of them here and click on the Load Dates button.
Your browser remembers these dates on this device, but that memory can be cleared, so keeping your own copy is recommended.
The rainfall values used in this table come from NOAA gridded weather data which are usually a better estimate across a farm than using a single onsite rain gauge. But if the gridded value is 0 when there was observed rain, then the model performance can be enhanced by entering that non-zero rain amount. Likewise, if the gridded data says there was rain and you are sure none actually occurred on your farm, then you can replace that false rain amount with a 0. The table below will update to show where the rain amount you entered has affected the model output. The altered rain amount does not affect the calculation of daily or 7-day DSV. But it can affect calculation of the spray interval.
Current Late Blight Protection Status:
| Weather data for Houlton ME | |||||||
| Forecast values begin 8pm Mon, Sep 21. Last forecast update on Tue, Sep 22 at 7:27 pm. | |||||||
| The estimated date to begin protection against late blight is shown with green font and shading. If a late blight funcigicide is applied on Sep 22, the estimated date for the NEXT spray is not within forecast range. | |||||||
| Late blight fungicide SPRAY DATE |
# days to NEXT spray date | NEXT SPRAY DATE within forecast range | Daily Precipitation (inches) | 7-Day Precip Total | Daily Disease Severity (DSV) | 7-Day DSV (Total since plant emergence) | EARLY BLIGHT Total "P"Days |
|---|---|---|---|---|---|---|---|
| Mon, June 15 | 12 | Sat, June 27 | 0.39 | 0.39 | 0 | 8 (8) | 9 |
| Tue, June 16 | 5 | Sun, June 21 | 0 | 0.39 | 8 | 8 (8) | 16 |
| Wed, June 17 | 5 | Mon, June 22 | 0.01 | 0.39 | 0 | 11 (11) | 23 |
| Thu, June 18 | 5 | Tue, June 23 | 0.93 | 1.33 | 0 | 11 (11) | 29 |
| Fri, June 19 | 5 | Wed, June 24 | 0.03 | 1.36 | 3 | 11 (11) | 38 |
| Sat, June 20 | 5 | Thu, June 25 | 0.02 | 1.38 | 0 | 12 (20) | 45 |
| Sun, June 21 | 5 | Fri, June 26 | 0.07 | 1.45 | 0 | 12 (20) | 52 |
| Mon, June 22 | 5 | Sat, June 27 | 0.05 | 1.11 | 0 | 12 (20) | 60 |
| Tue, June 23 | 12 | Sun, July 5 | 0.27 | 1.37 | 0 | 12 (20) | 68 |
| Wed, June 24 | 5 | Mon, June 29 | 0.03 | 1.40 | 9 | 12 (20) | 76 |
| Thu, June 25 | 5 | Tue, June 30 | 0 | 0.46 | 1 | 13 (21) | 83 |
| Fri, June 26 | 5 | Wed, July 1 | 0.24 | 0.67 | 0 | 21 (32) | 91 |
| Sat, June 27 | 5 | Thu, July 2 | 0 | 0.65 | 11 | 21 (32) | 101 |
| Sun, June 28 | 5 | Fri, July 3 | 0.03 | 0.61 | 2 | 23 (34) | 109 |
| Mon, June 29 | 5 | Sat, July 4 | 0 | 0.57 | 0 | 23 (34) | 116 |
| Tue, June 30 | 5 | Sun, July 5 | 0 | 0.30 | 0 | 23 (34) | 123 |
| Wed, July 1 | 5 | Mon, July 6 | 0 | 0.27 | 1 | 15 (35) | 131 |
| Thu, July 2 | 5 | Tue, July 7 | 0 | 0.27 | 0 | 14 (35) | 135 |
| Fri, July 3 | 5 | Wed, July 8 | 0 | 0.03 | 0 | 14 (35) | 141 |
| Sat, July 4 | 12 | Thu, July 16 | 0 | 0.03 | 0 | 3 (35) | 149 |
| Sun, July 5 | 14 | Sun, July 19 | 0 | 0 | 0 | 1 (35) | 157 |
| Mon, July 6 | 14 | Mon, July 20 | 0 | 0 | 0 | 1 (35) | 163 |
| Tue, July 7 | 14 | Tue, July 21 | 0 | 0 | 0 | 1 (35) | 171 |
| Wed, July 8 | 14 | Wed, July 22 | 0 | 0 | 0 | 0 (35) | 178 |
| Thu, July 9 | 12 | Tue, July 21 | 0.02 | 0.02 | 0 | 1 (36) | 187 |
| Fri, July 10 | 12 | Wed, July 22 | 0.59 | 0.61 | 1 | 1 (36) | 196 |
| Sat, July 11 | 12 | Thu, July 23 | 0 | 0.61 | 0 | 1 (36) | 203 |
| Sun, July 12 | 12 | Fri, July 24 | 0 | 0.61 | 0 | 1 (36) | 210 |
| Mon, July 13 | 12 | Sat, July 25 | 0.11 | 0.72 | 0 | 3 (38) | 218 |
| Tue, July 14 | 12 | Sun, July 26 | 0 | 0.72 | 2 | 3 (38) | 227 |
| Wed, July 15 | 12 | Mon, July 27 | 0.03 | 0.75 | 0 | 3 (38) | 236 |
| Thu, July 16 | 12 | Tue, July 28 | 0.13 | 0.87 | 0 | 3 (38) | 244 |
| Fri, July 17 | 12 | Wed, July 29 | 0 | 0.27 | 0 | 2 (38) | 252 |
| Sat, July 18 | 12 | Thu, July 30 | 0.19 | 0.46 | 0 | 4 (40) | 258 |
| Sun, July 19 | 12 | Fri, July 31 | 0.10 | 0.55 | 2 | 4 (40) | 267 |
| Mon, July 20 | 12 | Sat, August 1 | 0 | 0.45 | 0 | 4 (40) | 275 |
| Tue, July 21 | 12 | Sun, August 2 | 0 | 0.45 | 0 | 2 (40) | 283 |
| Wed, July 22 | 12 | Mon, August 3 | 0.43 | 0.85 | 0 | 10 (47) | 292 |
| Thu, July 23 | 5 | Tue, July 28 | 0 | 0.71 | 8 | 10 (47) | 300 |
| Fri, July 24 | 5 | Wed, July 29 | 0 | 0.71 | 0 | 10 (47) | 306 |
| Sat, July 25 | 5 | Thu, July 30 | 0 | 0.53 | 0 | 10 (47) | 313 |
| Sun, July 26 | 5 | Fri, July 31 | 0 | 0.43 | 0 | 8 (47) | 320 |
| Mon, July 27 | 5 | Sat, August 1 | 0 | 0.43 | 0 | 8 (47) | 327 |
| Tue, July 28 | 5 | Sun, August 2 | 0 | 0.43 | 0 | 8 (47) | 334 |
| Wed, July 29 | 5 | Mon, August 3 | 0 | 0 | 1 | 9 (48) | 342 |
| Thu, July 30 | 12 | Tue, August 11 | 0.08 | 0.08 | 0 | 11 (58) | 351 |
| Fri, July 31 | 5 | Wed, August 5 | 0 | 0.08 | 10 | 11 (58) | 360 |
| Sat, August 1 | 5 | Thu, August 6 | 0 | 0.08 | 1 | 12 (59) | 369 |
| Sun, August 2 | 5 | Fri, August 7 | 0 | 0.08 | 0 | 12 (59) | 377 |
| Mon, August 3 | 5 | Sat, August 8 | 0.33 | 0.41 | 0 | 19 (66) | 387 |
| Tue, August 4 | 5 | Sun, August 9 | 0 | 0.41 | 7 | 19 (66) | 395 |
| Wed, August 5 | 5 | Mon, August 10 | 0 | 0.41 | 0 | 18 (66) | 402 |
| Thu, August 6 | 5 | Tue, August 11 | 0 | 0.33 | 0 | 18 (66) | 409 |
| Fri, August 7 | 5 | Wed, August 12 | 0 | 0.33 | 1 | 9 (67) | 416 |
| Sat, August 8 | 5 | Thu, August 13 | 0.06 | 0.39 | 2 | 10 (69) | 424 |
| Sun, August 9 | 5 | Fri, August 14 | 0.13 | 0.52 | 1 | 11 (70) | 432 |
| Mon, August 10 | 5 | Sat, August 15 | 0 | 0.19 | 0 | 11 (70) | 440 |
| Tue, August 11 | 5 | Sun, August 16 | 0.11 | 0.31 | 2 | 6 (72) | 449 |
| Wed, August 12 | 5 | Mon, August 17 | 0.08 | 0.38 | 0 | 8 (74) | 457 |
| Thu, August 13 | 5 | Tue, August 18 | 0.09 | 0.47 | 2 | 8 (74) | 464 |
| Fri, August 14 | 5 | Wed, August 19 | 0 | 0.47 | 2 | 9 (76) | 472 |
| Sat, August 15 | 5 | Thu, August 20 | 0 | 0.41 | 0 | 7 (76) | 479 |
| Sun, August 16 | 5 | Fri, August 21 | 0 | 0.28 | 0 | 6 (76) | 485 |
| Mon, August 17 | 5 | Sat, August 22 | 0.76 | 1.03 | 0 | 13 (85) | 493 |
| Tue, August 18 | 5 | Sun, August 23 | 0.05 | 0.97 | 9 | 13 (85) | 503 |
| Wed, August 19 | 5 | Mon, August 24 | 0 | 0.89 | 2 | 15 (87) | 511 |
| Thu, August 20 | 5 | Tue, August 25 | 0.05 | 0.86 | 2 | 15 (89) | 519 |
| Fri, August 21 | 5 | Wed, August 26 | 0 | 0.86 | 0 | 13 (89) | 526 |
| Sat, August 22 | 5 | Thu, August 27 | 0.05 | 0.91 | 0 | 23 (99) | 532 |
| Sun, August 23 | 5 | Fri, August 28 | 0.12 | 1.02 | 0 | 23 (99) | 542 |
| Mon, August 24 | 5 | Sat, August 29 | 0 | 0.27 | 10 | 23 (99) | 551 |
| Tue, August 25 | 5 | Sun, August 30 | 0 | 0.22 | 0 | 14 (99) | 559 |
| Wed, August 26 | 5 | Mon, August 31 | 0 | 0.22 | 0 | 12 (99) | 567 |
| Thu, August 27 | 5 | Tue, September 1 | 0 | 0.17 | 0 | 10 (99) | 574 |
| Fri, August 28 | 5 | Wed, September 2 | 0.30 | 0.46 | 0 | 11 (100) | 583 |
| Sat, August 29 | 5 | Thu, September 3 | 0 | 0.41 | 1 | 11 (100) | 589 |
| Sun, August 30 | 5 | Fri, September 4 | 0 | 0.30 | 0 | 11 (100) | 596 |
| Mon, August 31 | 12 | Sat, September 12 | 0 | 0.30 | 0 | 1 (100) | 603 |
| Tue, September 1 | 12 | Sun, September 13 | 0 | 0.30 | 0 | 1 (100) | 608 |
| Wed, September 2 | 12 | Mon, September 14 | 0 | 0.30 | 0 | 1 (100) | 614 |
| Thu, September 3 | 12 | Tue, September 15 | 0.32 | 0.61 | 0 | 10 (109) | 622 |
| Fri, September 4 | 5 | Wed, September 9 | 0.10 | 0.42 | 9 | 10 (109) | 631 |
| Sat, September 5 | 5 | Thu, September 10 | 0.39 | 0.81 | 3 | 12 (112) | 638 |
| Sun, September 6 | 5 | Fri, September 11 | 0 | 0.81 | 0 | 12 (112) | 644 |
| Mon, September 7 | 5 | Sat, September 12 | 0 | 0.81 | 0 | 12 (112) | 651 |
| Tue, September 8 | 5 | Sun, September 13 | 0 | 0.81 | 0 | 12 (112) | 655 |
| Wed, September 9 | 5 | Mon, September 14 | 0 | 0.81 | 0 | 12 (112) | 658 |
| Thu, September 10 | 5 | Tue, September 15 | 0.66 | 1.15 | 1 | 13 (113) | 667 |
| Fri, September 11 | 12 | Wed, September 23 | 0 | 1.05 | 0 | 4 (113) | 672 |
| Sat, September 12 | 12 | Thu, September 24 | 0 | 0.66 | 0 | 1 (113) | 677 |
| Sun, September 13 | 12 | Fri, September 25 | 0.09 | 0.75 | 0 | 8 (121) | 683 |
| Mon, September 14 | 5 | Sat, September 19 | 0 | 0.75 | 7 | 8 (121) | 691 |
| Tue, September 15 | 5 | Sun, September 20 | 0 | 0.75 | 0 | 8 (121) | 695 |
| Wed, September 16 | 5 | Mon, September 21 | 0 | 0.75 | 0 | 8 (121) | 702 |
| Thu, September 17 | 5 | Tue, September 22 | 0 | 0.09 | 0 | 7 (121) | 709 |
| Fri, September 18 | 5 | Wed, September 23 | 0 | 0.09 | 2 | 9 (123) | 716 |
| Sat, September 19 | 5 | Thu, September 24 | 0 | 0.09 | 0 | 9 (123) | 719 |
| Sun, September 20 | 5 | Fri, September 25 | 0.02 | 0.02 | 0 | 9 (123) | 721 |
| Mon, September 21 | ? | ? | 0.01 | 0.03 | 0 | 2 (123) | 726 |
| *** Tue, Sep 22 *** | ? | ? | 0 | 0.03 | 0 | 2 (123) | 729 |
| Wed, September 23 | ? | ? | 0 | 0.03 | 0 | 2 (123) | 732 |
| Thu, September 24 | ? | ? | 0 | 0.03 | 0 | 2 (123) | 737 |
| Fri, September 25 | ? | ? | 0 | 0.03 | 0 | 0 (123) | 743 |
| Sat, September 26 | ? | ? | 0.86 | 0.89 | 0 | 1 (124) | 748 |
| Sun, September 27 | ? | ? | 0.10 | 0.96 | 1 | 1 (124) | 754 |
| Mon, September 28 | ? | ? | 0.87 | 1.83 | 0 | 17 (139) | 759 |
| Tue, September 29 | ? | ? | 0.13 | 1.96 | 0 | 17 (139) | 765 |
| Wed, September 30 | ? | ? | 0 | 1.96 | 16 | 17 (139) | 772 |
| Thu, October 1 | ? | ? | 0 | 1.96 | 0 | 17 (139) | 779 |
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