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Ester/Amine Spring Broadleaf Herbicide Timer - Purdue (GDD 50)
through Thu, Mar. 21. 2019

 

GDD Total: 3 (Base 50) through Thu, Mar. 21, 2019

  

Ann Arbor, MI

       

Forecast »

Over

601

Amine

201

Ester or Amine

151

Ester

110

Early

71

Under

0

 

Generously Supported By:



Tabular Data

Daily GDD accumulation for various base temperature models in 2018 & 2019

2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-15 19° 40° 8 0 0 0 0
02-16 20° 25° 8 0 0 0 0
02-17 22° 25° 10 0 0 0 0
02-18 14° 26° 10 0 0 0 0
02-19 28° 10 0 0 0 0
02-20 20° 35° 15 0 0 0 0
02-21 30° 37° 27 2 0 0 0
02-22 22° 38° 36 2 0 0 0
02-23 29° 39° 48 4 0 0 0
02-24 26° 45° 62 8 0 0 0
02-25 17° 25° 62 8 0 0 0
02-26 16° 23° 62 8 0 0 0
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-27 16° 26° 62 8 0 0 0
02-28 27° 62 8 0 0 0
03-01 14° 33° 63 8 0 0 0
03-02 25° 33° 70 8 0 0 0
03-03 15° 28° 70 8 0 0 0
03-04 16° 70 8 0 0 0
03-05 19° 70 8 0 0 0
03-06 21° 70 8 0 0 0
03-07 17° 26° 70 8 0 0 0
03-08 16° 37° 74 8 0 0 0
03-09 24° 38° 83 8 0 0 0
03-10 35° 47° 102 17 0 0 0
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-11 30° 40° 115 20 0 0 0
03-12 23° 43° 126 21 0 0 0
03-13 33° 53° 147 32 1 0 0
03-14 44° 63° 179 53 13 3 0
03-15 34° 47° 197 62 13 3 0
03-16 29° 36° 208 62 13 3 0
03-17 20° 36° 214 62 13 3 0
03-18 27° 41° 226 65 13 3 0
03-19 25° 47° 240 69 13 3 0
03-20 30° 47° 256 75 13 3 0
03-21 38° 41° 274 82 13 3 0
03-22 31° 42° 289 87 13 3 0
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-23 23° 48° 302 91 13 3 0
03-24 31° 52° 321 100 13 3 0
03-25 27° 42° 334 103 13 3 0
03-26 20° 43° 344 103 13 3 0
03-27 23° 51° 359 108 13 3 0
03-28 37° 57° 384 122 18 3 0
03-29 41° 50° 407 136 21 3 0
03-30 36° 45° 425 144 21 3 0
03-31 28° 44° 439 148 21 3 0
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-15 37° 45° 19 9 0 0 0
02-16 21° 38° 27 9 0 0 0
02-17 13° 32° 27 9 0 0 0
02-18 27° 34° 36 9 0 0 0
02-19 33° 56° 58 21 2 0 0
02-20 53° 61° 93 46 17 7 2
02-21 32° 54° 114 57 18 7 2
02-22 30° 40° 127 60 18 7 2
02-23 34° 48° 146 69 18 7 2
02-24 36° 39° 161 74 18 7 2
02-25 36° 48° 181 84 18 7 2
02-26 29° 51° 199 92 18 7 2
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-27 34° 59° 223 107 22 7 2
02-28 40° 59° 251 124 30 7 2
03-01 32° 41° 266 129 30 7 2
03-02 27° 38° 277 130 30 7 2
03-03 25° 40° 287 130 30 7 2
03-04 21° 41° 296 130 30 7 2
03-05 22° 37° 304 130 30 7 2
03-06 30° 41° 317 133 30 7 2
03-07 25° 33° 324 133 30 7 2
03-08 21° 31° 328 133 30 7 2
03-09 25° 32° 334 133 30 7 2
03-10 18° 35° 339 133 30 7 2
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-11 17° 38° 345 133 30 7 2
03-12 20° 34° 350 133 30 7 2
03-13 25° 34° 357 133 30 7 2
03-14 20° 38° 365 133 30 7 2
03-15 25° 36° 373 133 30 7 2
03-16 20° 37° 379 133 30 7 2
03-17 22° 47° 392 136 30 7 2
03-18 24° 58° 411 145 30 7 2
03-19 27° 44° 424 149 30 7 2
03-20 24° 43° 436 150 30 7 2
03-21 28° 40° 448 152 30 7 2
03-22 24° 44° 460 154 30 7 2
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-23 26° 42° 472 156 30 7 2
03-24 23° 42° 483 157 30 7 2
03-25 21° 39° 491 157 30 7 2
03-26 29° 49° 508 164 30 7 2
03-27 41° 53° 533 179 35 7 2
03-28 40° 46° 554 190 36 7 2
03-29 40° 45° 574 200 36 7 2
03-30 31° 44° 590 206 36 7 2
03-31 30° 49° 608 214 36 7 2
04-01 28° 40° 619 215 36 7 2
04-02 21° 41° 628 215 36 7 2
04-03 33° 39° 642 219 36 7 2
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-04 26° 38° 652 219 36 7 2
04-05 25° 41° 664 221 36 7 2
04-06 28° 41° 676 223 36 7 2
04-07 20° 36° 682 223 36 7 2
04-08 19° 39° 689 223 36 7 2
04-09 31° 37° 701 225 36 7 2
04-10 28° 44° 714 229 36 7 2
04-11 33° 57° 737 242 39 7 2
04-12 41° 74° 773 267 55 14 4
04-13 39° 62° 801 285 63 15 4
04-14 33° 45° 818 293 63 15 4
04-15 30° 38° 830 294 63 15 4
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-16 31° 37° 842 297 63 15 4
04-17 28° 36° 852 297 63 15 4
04-18 31° 45° 868 303 63 15 4
04-19 33° 54° 890 315 64 15 4
04-20 29° 57° 911 326 65 15 4
04-21 30° 56° 932 337 66 15 4
04-22 32° 62° 957 352 71 15 4
04-23 41° 71° 991 376 85 21 5
04-24 51° 56° 1023 397 97 24 5
04-25 45° 61° 1054 418 108 27 5
04-26 33° 63° 1080 435 114 27 5
04-27 39° 66° 1110 455 125 30 5
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-28 38° 52° 1133 468 128 30 5
04-29 31° 58° 1156 480 130 30 5
04-30 34° 71° 1187 501 141 33 5
05-01 53° 83° 1233 537 167 51 19
05-02 61° 82° 1283 577 197 73 36
05-03 62° 71° 1327 612 222 89 47
05-04 56° 71° 1369 643 243 103 56
05-05 52° 76° 1411 676 265 117 65
05-06 54° 76° 1454 709 289 132 75
05-07 44° 69° 1489 733 303 139 77
05-08 45° 77° 1527 762 322 149 82
05-09 51° 81° 1571 796 345 165 93
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-10 59° 69° 1613 828 368 179 102
05-11 42° 59° 1642 847 376 180 102
05-12 43° 51° 1667 862 381 180 102
05-13 45° 61° 1698 883 392 183 102
05-14 52° 75° 1740 914 414 197 111
05-15 60° 72° 1783 948 438 212 121
05-16 50° 78° 1825 980 459 226 130
05-17 52° 81° 1869 1014 484 242 141
05-18 52° 73° 1910 1044 504 255 149
05-19 58° 76° 1955 1079 529 272 161
05-20 58° 64° 1993 1108 548 282 166
05-21 51° 66° 2030 1135 564 291 170
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-22 53° 71° 2070 1165 584 303 177
05-23 51° 79° 2113 1198 607 318 187
05-24 53° 81° 2158 1233 632 335 199
05-25 57° 86° 2207 1272 662 356 215
05-26 65° 79° 2257 1312 691 378 232
05-27 64° 90° 2312 1357 726 405 254
05-28 65° 92° 2369 1403 763 434 278
05-29 69° 89° 2426 1450 800 463 302
05-30 70° 86° 2481 1496 836 490 324
05-31 73° 87° 2540 1544 874 521 350
06-01 68° 82° 2593 1587 907 546 370
06-02 56° 71° 2634 1619 928 559 378
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-03 61° 75° 2680 1654 954 577 391
06-04 58° 71° 2722 1687 976 591 400
06-05 55° 68° 2762 1716 996 603 407
06-06 46° 71° 2798 1743 1013 611 410
06-07 59° 81° 2846 1781 1041 631 425
06-08 60° 81° 2895 1819 1069 652 441
06-09 63° 72° 2940 1855 1094 669 453
06-10 61° 66° 2982 1886 1116 683 462
06-11 59° 76° 3027 1922 1142 700 474
06-12 60° 75° 3073 1958 1167 718 487
06-13 66° 83° 3126 2000 1200 743 507
06-14 55° 82° 3172 2037 1227 761 520
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-15 56° 82° 3219 2074 1253 780 534
06-16 67° 84° 3273 2117 1287 806 555
06-17 67° 95° 3331 2166 1325 836 580
06-18 76° 93° 3394 2218 1368 871 610
06-19 68° 76° 3443 2258 1398 892 626
06-20 59° 70° 3486 2291 1420 907 636
06-21 58° 77° 3531 2326 1446 924 648
06-22 63° 73° 3578 2362 1472 943 662
06-23 64° 76° 3626 2401 1500 963 677
06-24 64° 74° 3673 2437 1527 982 691
06-25 56° 75° 3716 2471 1550 997 701
06-26 54° 78° 3760 2505 1575 1013 712
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-27 67° 75° 3809 2544 1604 1034 728
06-28 64° 86° 3863 2587 1637 1060 749
06-29 65° 89° 3918 2632 1672 1087 771
06-30 73° 92° 3978 2683 1713 1119 798
07-01 71° 92° 4038 2733 1752 1151 825
07-02 73° 88° 4097 2781 1791 1182 851
07-03 66° 89° 4152 2827 1827 1209 873
07-04 72° 91° 4212 2877 1866 1241 900
07-05 75° 93° 4274 2929 1908 1275 929
07-06 63° 79° 4323 2968 1937 1296 945
07-07 51° 79° 4366 3001 1960 1311 955
07-08 53° 85° 4413 3038 1988 1330 969
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-09 58° 90° 4465 3080 2020 1354 988
07-10 66° 88° 4520 3125 2055 1381 1010
07-11 57° 85° 4569 3164 2083 1402 1026
07-12 58° 83° 4618 3202 2112 1423 1042
07-13 64° 91° 4673 3248 2147 1450 1064
07-14 70° 85° 4729 3293 2183 1478 1087
07-15 70° 92° 4788 3342 2222 1509 1113
07-16 71° 88° 4846 3390 2260 1539 1138
07-17 62° 81° 4895 3430 2290 1560 1154
07-18 58° 81° 4943 3468 2317 1580 1169
07-19 58° 83° 4991 3506 2346 1600 1184
07-20 64° 80° 5041 3546 2376 1622 1201
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-21 66° 74° 5089 3584 2403 1642 1216
07-22 65° 71° 5135 3620 2429 1660 1229
07-23 61° 78° 5183 3658 2457 1680 1244
07-24 67° 82° 5236 3700 2490 1705 1264
07-25 66° 87° 5290 3745 2524 1731 1285
07-26 65° 82° 5341 3786 2556 1754 1303
07-27 59° 80° 5389 3823 2583 1774 1318
07-28 57° 79° 5434 3859 2609 1791 1330
07-29 59° 82° 5483 3897 2637 1812 1346
07-30 59° 78° 5529 3934 2664 1830 1359
07-31 61° 77° 5577 3971 2691 1850 1374
08-01 63° 78° 5625 4010 2719 1870 1389
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-02 60° 84° 5675 4050 2749 1892 1406
08-03 64° 85° 5728 4092 2782 1917 1426
08-04 63° 88° 5781 4136 2815 1942 1446
08-05 69° 90° 5839 4183 2853 1972 1471
08-06 69° 85° 5894 4229 2889 1999 1493
08-07 69° 84° 5949 4273 2923 2026 1515
08-08 70° 83° 6003 4318 2957 2052 1536
08-09 63° 84° 6055 4359 2989 2076 1555
08-10 66° 81° 6107 4401 3021 2100 1574
08-11 59° 83° 6156 4440 3050 2121 1590
08-12 64° 82° 6207 4481 3081 2144 1608
08-13 62° 83° 6257 4522 3111 2166 1625
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-14 64° 86° 6310 4565 3144 2191 1645
08-15 67° 86° 6364 4609 3179 2217 1666
08-16 69° 76° 6415 4650 3210 2240 1684
08-17 71° 79° 6468 4693 3243 2265 1704
08-18 68° 83° 6522 4737 3276 2291 1725
08-19 67° 80° 6574 4778 3308 2315 1744
08-20 64° 80° 6623 4818 3338 2336 1760
08-21 68° 81° 6676 4860 3370 2361 1780
08-22 61° 75° 6722 4896 3396 2379 1793
08-23 55° 80° 6767 4932 3422 2396 1805
08-24 56° 76° 6811 4966 3446 2412 1816
08-25 67° 76° 6861 5005 3475 2434 1833
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-26 69° 85° 6916 5051 3510 2461 1855
08-27 72° 88° 6974 5099 3549 2491 1880
08-28 75° 89° 7034 5149 3588 2523 1907
08-29 70° 83° 7088 5193 3623 2549 1928
08-30 58° 76° 7133 5228 3648 2566 1940
08-31 57° 80° 7180 5265 3674 2585 1954
09-01 64° 85° 7233 5308 3707 2610 1974
09-02 70° 88° 7290 5355 3744 2639 1998
09-03 71° 87° 7347 5402 3781 2668 2022
09-04 68° 90° 7404 5448 3818 2697 2046
09-05 72° 90° 7463 5498 3857 2728 2072
09-06 67° 74° 7511 5536 3885 2748 2087
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-07 62° 70° 7555 5570 3909 2764 2098
09-08 58° 65° 7595 5599 3929 2776 2105
09-09 55° 60° 7630 5624 3944 2783 2107
09-10 54° 64° 7667 5652 3961 2792 2111
09-11 57° 74° 7711 5685 3985 2808 2122
09-12 53° 73° 7752 5716 4006 2821 2130
09-13 57° 77° 7797 5751 4031 2838 2142
09-14 66° 81° 7848 5793 4062 2861 2160
09-15 65° 86° 7901 5836 4096 2886 2180
09-16 64° 84° 7953 5878 4128 2910 2199
09-17 64° 87° 8007 5921 4161 2936 2220
09-18 65° 88° 8062 5966 4196 2963 2242
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-19 65° 78° 8111 6006 4225 2984 2258
09-20 63° 79° 8160 6044 4254 3005 2274
09-21 62° 82° 8209 6084 4284 3026 2290
09-22 49° 61° 8242 6107 4297 3031 2290
09-23 44° 70° 8277 6132 4312 3038 2293
09-24 52° 66° 8314 6159 4329 3047 2297
09-25 66° 76° 8363 6198 4357 3068 2312
09-26 51° 70° 8402 6226 4376 3079 2318
09-27 48° 62° 8434 6249 4389 3083 2318
09-28 47° 69° 8470 6275 4405 3091 2321
09-29 42° 62° 8500 6295 4415 3093 2321
09-30 45° 63° 8533 6317 4427 3098 2321
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55

 

Latest Updates

March 9th, 2018Note Regarding 2018 Alerts

We had an issue with the emailed alerts that should be resolved now, and apologize for any inconvenience. You may receive outdated alerts tomorrow (Saturday, March 10, 2018), so please check the details before taking any action. Thank you.


 

February 17th, 2018Welcome to a New GDD Season!

GDDTracker is ready for 2018 with GDD tracking that began on February 15. New this year will be the Smith-Kerns Dollar Spot Prediction Model which will be launching soon. Check back soon for additional details!
 

March 29th, 2017Timing crabgrass pre-emergence applications

Please note that Dr. Frank has written another helpful article available from the MSU Extension web site.

http://msue.anr.msu.edu/news/timing_crabgrass_pre_emergence_applications


 

March 9th, 2017Controlling Annual Bluegrass Seedheads: Spray Now or Wait?

Dr. Kevin Frank has posted a useful article at the MSU Extension website. Please note it is written specifically for Michigan but may apply to other midwest regions.

"Growing degree-days have accumulated quickly, but it may not yet be time to apply plant growth regulators to control annual bluegrass seedheads on golf courses.

Read more: http://msue.anr.msu.edu/news/controlling_annual_bluegrass_seedheads_spray_now_or_wait


 

February 26th, 2017Early Spring in Michigan: Boom or Bust?

Dr. Kevin Frank has posted a helpful article on the MSU Extension website. Much of the midwest is experiencing the same (very) early warm-up, so non-Michiganders may find it help as well!

http://msue.anr.msu.edu/news/is_an_early_spring_a_boom_or_bust_for_golf_course_turf
 

February 16th, 2017Missing weather data

All air temperature data has been accounted for now.