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Crabgrass/Annual Bluegrass Preemergence Timer (GDD 32)
through Mon, Sep. 22. 2014

 
  

MI

       

Generously Supported By:



Tabular Data

Daily GDD accumulation for various base temperature models in 2013 & 2014

2014Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-19 24° 40° 16 0 0 0 0
02-20 28° 37° 27 1 0 0 0
02-21 27° 39° 38 2 0 0 0
02-22 21° 29° 41 2 0 0 0
02-23 15° 24° 41 2 0 0 0
02-24 14° 21° 41 2 0 0 0
02-25 11° 21° 41 2 0 0 0
02-26 -1° 15° 41 2 0 0 0
02-27 -20° 16° 41 2 0 0 0
02-28 -23° 18° 41 2 0 0 0
03-01 12° 23° 41 2 0 0 0
03-02 -2° 14° 41 2 0 0 0
2014Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-03 -20° 11° 41 2 0 0 0
03-04 -2° 20° 41 2 0 0 0
03-05 10° 21° 41 2 0 0 0
03-06 -1° 27° 41 2 0 0 0
03-07 41° 41 2 0 0 0
03-08 17° 36° 46 2 0 0 0
03-09 35° 46 2 0 0 0
03-10 32° 45° 62 9 0 0 0
03-11 32° 42° 77 14 0 0 0
03-12 10° 35° 78 14 0 0 0
03-13 -12° 27° 78 14 0 0 0
03-14 22° 45° 90 16 0 0 0
2014Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-15 24° 37° 98 16 0 0 0
03-16 22° 98 16 0 0 0
03-17 -4° 30° 98 16 0 0 0
03-18 16° 41° 105 16 0 0 0
03-19 33° 39° 119 20 0 0 0
03-20 14° 36° 122 20 0 0 0
03-21 40° 125 20 0 0 0
03-22 18° 35° 130 20 0 0 0
03-23 25° 130 20 0 0 0
03-24 -3° 28° 130 20 0 0 0
03-25 11° 27° 130 20 0 0 0
03-26 -5° 30° 130 20 0 0 0
2014Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-27 30° 40° 143 23 0 0 0
03-28 32° 45° 160 30 0 0 0
03-29 21° 38° 167 30 0 0 0
03-30 11° 42° 172 30 0 0 0
03-31 18° 48° 183 31 0 0 0
04-01 29° 43° 197 35 0 0 0
04-02 42° 201 35 0 0 0
04-03 32° 37° 213 37 0 0 0
04-04 32° 42° 228 42 0 0 0
04-05 29° 41° 241 45 0 0 0
04-06 31° 56° 262 57 2 0 0
04-07 32° 54° 283 68 2 0 0
2014Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-08 36° 59° 309 83 8 0 0
04-09 31° 58° 331 95 10 0 0
04-10 45° 63° 363 117 22 4 0
04-11 30° 66° 389 134 28 4 0
04-12 40° 69° 422 156 41 9 0
04-13 48° 68° 458 182 57 17 3
04-14 27° 64° 481 196 61 17 3
04-15 24° 33° 488 196 61 17 3
04-16 26° 49° 503 201 61 17 3
04-17 33° 65° 531 219 68 17 3
04-18 41° 61° 560 238 77 18 3
04-19 30° 62° 584 252 81 18 3
2014Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-20 39° 76° 619 277 96 25 5
04-21 54° 79° 663 311 120 41 16
04-22 38° 56° 688 326 126 41 16
04-23 29° 57° 709 337 127 41 16
04-24 40° 59° 737 355 134 41 16
04-25 40° 62° 766 374 143 42 16
04-26 37° 57° 791 389 148 42 16
04-27 38° 57° 816 404 154 42 16
04-28 42° 57° 844 422 161 42 16
04-29 44° 66° 877 445 174 47 16
04-30 46° 58° 907 465 184 49 16
05-01 38° 48° 928 476 185 49 16
2014Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-02 44° 51° 953 491 191 49 16
05-03 45° 58° 983 511 200 51 16
05-04 43° 57° 1011 529 208 51 16
05-05 41° 58° 1038 546 216 51 16
05-06 39° 64° 1068 566 225 52 16
05-07 43° 59° 1096 584 234 53 16
05-08 50° 88° 1143 621 260 72 30
05-09 57° 77° 1188 656 285 89 42
05-10 48° 69° 1224 682 302 97 45
05-11 43° 84° 1266 714 323 110 54
05-12 58° 75° 1311 749 348 127 66
05-13 54° 76° 1353 781 371 142 75
2014Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-14 49° 59° 1385 803 383 146 75
05-15 37° 47° 1406 814 383 146 75
05-16 33° 50° 1425 823 383 146 75
05-17 36° 58° 1450 838 388 146 75
05-18 42° 68° 1483 861 401 151 75
05-19 44° 73° 1519 887 417 159 79
05-20 54° 82° 1565 923 443 177 92
05-21 63° 84° 1617 965 475 201 110
05-22 53° 72° 1657 995 495 213 117
05-23 47° 73° 1695 1023 513 223 122
05-24 45° 79° 1735 1053 533 234 129
05-25 47° 83° 1778 1086 556 250 139
2014Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-26 53° 85° 1825 1123 583 269 153
05-27 69° 82° 1879 1167 617 294 174
05-28 60° 72° 1922 1200 640 310 185
05-29 50° 79° 1965 1233 663 324 194
05-30 53° 85° 2012 1270 690 343 208
05-31 59° 88° 2063 1311 721 367 226
06-01 58° 91° 2116 1354 754 392 246
06-02 72° 84° 2172 1400 790 420 270
06-03 61° 75° 2219 1437 817 438 283
06-04 57° 72° 2261 1469 839 453 293
06-05 46° 80° 2303 1501 861 466 301
06-06 48° 82° 2346 1534 884 481 311
2014Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-07 52° 87° 2393 1571 911 501 325
06-08 62° 79° 2442 1610 940 521 341
06-09 56° 82° 2489 1647 966 540 355
06-10 58° 79° 2535 1683 993 559 369
06-11 57° 75° 2580 1718 1018 575 380
06-12 61° 80° 2628 1756 1046 596 395
06-13 52° 66° 2665 1783 1063 605 399
06-14 43° 79° 2704 1812 1082 616 405
06-15 54° 84° 2751 1849 1109 634 419
06-16 68° 89° 2807 1895 1145 663 443
06-17 67° 87° 2863 1941 1180 690 465
06-18 66° 75° 2911 1979 1209 711 480
2014Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-19 62° 79° 2960 2018 1238 732 496
06-20 60° 66° 3001 2049 1259 745 504
06-21 59° 81° 3049 2087 1287 765 519
06-22 63° 83° 3100 2128 1318 788 538
06-23 66° 77° 3150 2168 1348 809 554
06-24 68° 81° 3202 2210 1380 834 573
06-25 66° 75° 3250 2248 1408 854 588
06-26 60° 79° 3298 2286 1436 873 603
06-27 61° 88° 3350 2328 1468 898 622
06-28 66° 86° 3404 2372 1502 924 643
06-29 73° 87° 3462 2420 1540 954 668
06-30 74° 92° 3523 2471 1581 987 696
2014Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-01 67° 83° 3576 2514 1614 1012 716
07-02 61° 69° 3619 2547 1637 1027 727
07-03 55° 77° 3663 2581 1661 1043 738
07-04 50° 80° 3707 2615 1684 1058 748
07-05 49° 81° 3750 2648 1708 1073 758
07-06 61° 83° 3800 2688 1738 1095 775
07-07 70° 86° 3856 2734 1774 1124 798
07-08 65° 74° 3903 2771 1801 1143 813
07-09 60° 73° 3948 2806 1826 1160 824
07-10 53° 78° 3991 2839 1849 1175 834
07-11 53° 83° 4037 2875 1875 1193 848
07-12 60° 84° 4087 2915 1905 1215 864
2014Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-13 68° 79° 4139 2957 1937 1239 883
07-14 59° 80° 4187 2995 1965 1259 898
07-15 56° 65° 4225 3023 1983 1269 903
07-16 53° 70° 4265 3053 2002 1280 910
07-17 47° 77° 4305 3083 2023 1292 917
07-18 49° 81° 4347 3115 2045 1307 927
07-19 54° 82° 4394 3152 2072 1325 940
07-20 59° 85° 4443 3191 2101 1347 957
07-21 58° 89° 4495 3233 2133 1370 975
07-22 64° 92° 4551 3279 2169 1398 998
07-23 59° 74° 4595 3313 2193 1415 1010
07-24 53° 76° 4638 3346 2216 1430 1019
2014Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-25 49° 78° 4680 3378 2238 1443 1028
07-26 58° 79° 4726 3414 2264 1462 1041
07-27 59° 84° 4776 3454 2294 1483 1058
07-28 53° 68° 4815 3483 2313 1494 1064
07-29 50° 74° 4855 3513 2332 1506 1071
07-30 53° 78° 4898 3546 2356 1522 1081
07-31 52° 82° 4943 3581 2381 1539 1094
08-01 57° 83° 4992 3620 2409 1559 1109
08-02 55° 83° 5039 3657 2436 1578 1123
08-03 54° 88° 5088 3696 2466 1600 1139
08-04 62° 83° 5139 3737 2497 1622 1157
08-05 66° 78° 5189 3777 2527 1644 1174
2014Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-06 59° 82° 5238 3816 2555 1665 1190
08-07 55° 84° 5285 3853 2583 1685 1204
08-08 58° 83° 5333 3891 2611 1705 1220
08-09 54° 82° 5380 3928 2638 1723 1233
08-10 58° 86° 5430 3968 2667 1745 1250
08-11 67° 79° 5480 4008 2698 1768 1268
08-12 58° 67° 5521 4039 2719 1780 1275
08-13 51° 78° 5563 4071 2741 1795 1285
08-14 48° 74° 5602 4100 2760 1806 1291
08-15 44° 77° 5641 4129 2779 1816 1296
08-16 53° 81° 5685 4163 2803 1833 1308
08-17 65° 76° 5734 4202 2832 1853 1323
2014Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-18 58° 82° 5781 4239 2859 1873 1338
08-19 65° 76° 5830 4278 2888 1893 1353
08-20 65° 80° 5880 4318 2918 1916 1370
08-21 62° 78° 5928 4356 2946 1936 1385
08-22 67° 80° 5980 4398 2978 1960 1404
08-23 64° 84° 6032 4440 3010 1984 1424
08-24 65° 84° 6085 4483 3043 2009 1443
08-25 67° 83° 6138 4526 3076 2033 1463
08-26 64° 81° 6188 4566 3106 2056 1480
08-27 57° 80° 6234 4602 3132 2074 1493
08-28 50° 76° 6275 4633 3153 2087 1502
08-29 62° 77° 6323 4671 3181 2106 1516
2014Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-30 70° 80° 6376 4714 3214 2131 1536
08-31 66° 84° 6429 4757 3247 2156 1556
09-01 64° 82° 6480 4798 3278 2180 1574
09-02 62° 83° 6531 4839 3309 2202 1592
09-03 55° 85° 6579 4877 3337 2222 1607
09-04 62° 82° 6629 4917 3366 2244 1624
09-05 66° 82° 6680 4958 3398 2268 1642
09-06 56° 76° 6725 4993 3423 2284 1654
09-07 48° 78° 6766 5024 3444 2298 1662
09-08 51° 79° 6809 5057 3467 2313 1673
09-09 56° 82° 6856 5094 3494 2332 1686
09-10 58° 76° 6901 5129 3519 2349 1698
2014Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-11 50° 57° 6933 5151 3531 2353 1698
09-12 48° 55° 6962 5170 3540 2354 1698
09-13 46° 58° 6992 5190 3550 2356 1698
09-14 41° 62° 7022 5210 3560 2358 1698
09-15 43° 63° 7054 5232 3572 2361 1698
09-16 42° 66° 7086 5254 3584 2365 1698
09-17 37° 65° 7115 5273 3592 2366 1698
09-18 42° 64° 7146 5294 3604 2369 1698
09-19 44° 72° 7182 5320 3619 2377 1701
09-20 57° 76° 7227 5355 3644 2394 1713
09-21 47° 65° 7261 5379 3659 2400 1714
09-22 39° 64° 7290 5398 3668 2402 1714
2014Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-23 42° 46° 0 0 0 0 0
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-19 17° 41° 0 0 0 0 0
02-20 15° 23° 0 0 0 0 0
02-21 19° 25° 0 0 0 0 0
02-22 20° 32° 4 0 0 0 0
02-23 26° 31° 11 0 0 0 0
02-24 21° 35° 17 0 0 0 0
02-25 10° 37° 19 0 0 0 0
02-26 20° 34° 24 0 0 0 0
02-27 33° 35° 36 2 0 0 0
02-28 29° 36° 47 3 0 0 0
03-01 17° 29° 48 3 0 0 0
03-02 28° 48 3 0 0 0
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-03 10° 31° 48 3 0 0 0
03-04 31° 48 3 0 0 0
03-05 10° 33° 48 3 0 0 0
03-06 27° 36° 57 3 0 0 0
03-07 19° 34° 61 3 0 0 0
03-08 12° 35° 63 3 0 0 0
03-09 19° 37° 69 3 0 0 0
03-10 37° 43° 86 10 0 0 0
03-11 34° 43° 103 16 0 0 0
03-12 29° 33° 112 16 0 0 0
03-13 23° 31° 117 16 0 0 0
03-14 18° 39° 124 16 0 0 0
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-15 32° 39° 137 20 0 0 0
03-16 25° 33° 144 20 0 0 0
03-17 22° 30° 148 20 0 0 0
03-18 21° 33° 153 20 0 0 0
03-19 21° 32° 157 20 0 0 0
03-20 14° 24° 157 20 0 0 0
03-21 14° 31° 158 20 0 0 0
03-22 25° 37° 167 20 0 0 0
03-23 27° 36° 176 20 0 0 0
03-24 26° 39° 187 21 0 0 0
03-25 31° 39° 200 24 0 0 0
03-26 30° 43° 215 28 0 0 0
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-27 29° 48° 231 35 0 0 0
03-28 29° 52° 249 43 0 0 0
03-29 24° 54° 267 50 0 0 0
03-30 24° 58° 285 59 0 0 0
03-31 36° 48° 305 69 0 0 0
04-01 27° 34° 314 69 0 0 0
04-02 22° 42° 324 69 0 0 0
04-03 22° 45° 336 71 0 0 0
04-04 25° 55° 354 79 0 0 0
04-05 31° 50° 372 88 0 0 0
04-06 35° 58° 397 102 5 0 0
04-07 34° 56° 419 115 7 0 0
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-08 31° 50° 438 123 7 0 0
04-09 40° 48° 460 136 9 0 0
04-10 37° 43° 478 144 9 0 0
04-11 35° 37° 492 147 9 0 0
04-12 33° 41° 507 153 9 0 0
04-13 35° 40° 523 158 9 0 0
04-14 30° 48° 540 165 9 0 0
04-15 43° 64° 571 187 21 4 0
04-16 42° 53° 597 202 27 4 0
04-17 40° 52° 621 216 30 4 0
04-18 44° 65° 653 239 43 8 0
04-19 35° 58° 678 253 47 8 0
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-20 28° 39° 690 255 47 8 0
04-21 25° 53° 706 261 47 8 0
04-22 33° 64° 733 278 54 8 0
04-23 42° 63° 764 299 65 11 0
04-24 34° 47° 782 307 65 11 0
04-25 36° 50° 803 319 66 11 0
04-26 33° 64° 830 335 73 11 0
04-27 43° 70° 864 360 87 17 2
04-28 50° 62° 899 384 102 24 3
04-29 47° 73° 937 412 120 34 8
04-30 57° 77° 982 448 145 51 21
05-01 60° 84° 1032 487 175 73 37
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-02 58° 81° 1079 525 202 92 52
05-03 54° 78° 1123 559 226 108 63
05-04 55° 76° 1167 592 250 124 73
05-05 50° 77° 1208 624 271 137 82
05-06 47° 78° 1249 654 291 150 89
05-07 47° 79° 1290 685 312 163 97
05-08 51° 80° 1333 719 336 178 108
05-09 51° 81° 1378 753 360 195 119
05-10 44° 61° 1408 773 371 197 119
05-11 39° 55° 1433 788 376 197 119
05-12 36° 45° 1451 796 376 197 119
05-13 29° 56° 1472 807 376 197 119
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-14 45° 74° 1509 835 394 207 123
05-15 59° 78° 1556 871 421 225 137
05-16 49° 82° 1600 905 444 241 148
05-17 51° 69° 1638 933 463 251 153
05-18 54° 82° 1684 970 489 270 166
05-19 55° 88° 1734 1009 519 291 183
05-20 68° 86° 1789 1055 554 319 205
05-21 65° 81° 1840 1095 585 341 223
05-22 59° 69° 1882 1127 607 355 232
05-23 44° 59° 1911 1147 616 357 232
05-24 36° 63° 1939 1164 623 357 232
05-25 39° 65° 1969 1184 634 359 232
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-26 41° 70° 2002 1208 647 364 233
05-27 48° 61° 2034 1230 659 368 233
05-28 52° 76° 2077 1262 681 383 242
05-29 62° 79° 2125 1301 710 403 258
05-30 67° 86° 2180 1345 745 430 279
05-31 68° 80° 2232 1387 777 454 298
06-01 66° 79° 2282 1428 807 476 316
06-02 49° 64° 2317 1452 822 483 317
06-03 40° 67° 2349 1474 833 487 317
06-04 46° 72° 2386 1501 851 496 322
06-05 56° 70° 2427 1532 872 509 330
06-06 55° 67° 2466 1561 890 520 335
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-07 49° 73° 2505 1590 910 531 342
06-08 49° 74° 2544 1620 929 542 348
06-09 55° 81° 2591 1656 955 561 361
06-10 62° 73° 2636 1692 981 578 374
06-11 57° 80° 2683 1728 1008 597 388
06-12 61° 79° 2731 1766 1036 617 403
06-13 62° 77° 2778 1803 1063 636 417
06-14 54° 78° 2822 1837 1087 652 428
06-15 55° 74° 2865 1870 1109 667 437
06-16 64° 80° 2915 1910 1139 689 454
06-17 58° 84° 2964 1949 1168 710 470
06-18 56° 72° 3006 1981 1190 724 479
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-19 46° 75° 3044 2009 1209 734 485
06-20 50° 83° 3089 2044 1233 751 496
06-21 61° 85° 3140 2085 1264 774 514
06-22 69° 86° 3196 2131 1300 802 537
06-23 69° 90° 3253 2178 1338 831 562
06-24 70° 86° 3309 2224 1374 859 585
06-25 67° 80° 3361 2266 1405 883 603
06-26 65° 85° 3414 2309 1438 908 623
06-27 68° 89° 3470 2355 1475 936 647
06-28 65° 81° 3521 2397 1506 959 665
06-29 62° 73° 3567 2432 1532 977 678
06-30 62° 82° 3617 2472 1562 999 695
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-01 54° 79° 3661 2507 1586 1015 706
07-02 56° 71° 3703 2538 1607 1029 714
07-03 58° 79° 3749 2575 1634 1047 728
07-04 59° 80° 3797 2612 1662 1067 743
07-05 63° 86° 3850 2655 1694 1092 762
07-06 66° 86° 3904 2699 1729 1118 784
07-07 71° 88° 3961 2747 1766 1147 808
07-08 72° 81° 4016 2791 1801 1174 830
07-09 67° 89° 4072 2837 1837 1202 853
07-10 63° 84° 4123 2879 1868 1225 871
07-11 57° 83° 4171 2917 1896 1245 886
07-12 55° 85° 4219 2954 1924 1265 901
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-13 58° 88° 4270 2995 1955 1288 919
07-14 62° 93° 4325 3040 1990 1315 941
07-15 69° 94° 4385 3090 2029 1347 967
07-16 73° 95° 4447 3142 2071 1381 996
07-17 75° 96° 4510 3195 2115 1416 1027
07-18 74° 96° 4573 3249 2158 1451 1057
07-19 79° 96° 4639 3304 2204 1489 1090
07-20 68° 88° 4695 3350 2240 1517 1113
07-21 58° 86° 4745 3390 2270 1539 1130
07-22 65° 86° 4798 3433 2303 1564 1150
07-23 58° 81° 4846 3471 2330 1584 1164
07-24 47° 76° 4885 3501 2350 1595 1171
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-25 50° 80° 4928 3534 2373 1610 1181
07-26 61° 76° 4975 3571 2400 1629 1195
07-27 56° 70° 5016 3601 2421 1642 1203
07-28 50° 67° 5053 3628 2437 1651 1206
07-29 56° 70° 5093 3659 2458 1663 1214
07-30 46° 81° 5135 3690 2479 1677 1222
07-31 62° 70° 5179 3724 2503 1693 1233
08-01 59° 80° 5226 3761 2531 1712 1248
08-02 56° 76° 5270 3795 2555 1728 1259
08-03 54° 80° 5315 3830 2579 1745 1270
08-04 53° 77° 5358 3863 2602 1760 1280
08-05 47° 72° 5395 3890 2620 1769 1285
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-06 64° 78° 5444 3929 2649 1790 1301
08-07 64° 81° 5495 3970 2679 1813 1318
08-08 56° 80° 5541 4006 2705 1831 1331
08-09 53° 82° 5586 4042 2731 1848 1344
08-10 57° 81° 5633 4078 2758 1867 1358
08-11 58° 79° 5679 4115 2784 1885 1371
08-12 64° 74° 5726 4152 2811 1904 1385
08-13 52° 69° 5765 4180 2830 1915 1391
08-14 45° 73° 5802 4207 2846 1924 1394
08-15 46° 77° 5841 4236 2866 1935 1401
08-16 50° 82° 5886 4271 2890 1952 1412
08-17 50° 84° 5931 4306 2915 1969 1424
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-18 51° 85° 5977 4342 2941 1987 1437
08-19 51° 85° 6023 4378 2967 2005 1450
08-20 59° 88° 6074 4419 2999 2028 1469
08-21 64° 91° 6130 4465 3034 2056 1491
08-22 63° 77° 6177 4503 3062 2075 1506
08-23 53° 83° 6224 4539 3088 2094 1519
08-24 52° 86° 6270 4576 3115 2112 1533
08-25 59° 90° 6323 4618 3148 2137 1553
08-26 70° 84° 6378 4664 3183 2164 1575
08-27 71° 89° 6437 4712 3221 2195 1600
08-28 71° 84° 6492 4758 3257 2222 1623
08-29 64° 88° 6546 4802 3291 2248 1644
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-30 68° 90° 6603 4848 3328 2277 1668
08-31 66° 80° 6654 4889 3359 2300 1686
09-01 62° 84° 6705 4930 3390 2323 1704
09-02 60° 71° 6748 4963 3413 2338 1714
09-03 53° 77° 6791 4996 3436 2353 1724
09-04 53° 82° 6836 5032 3461 2370 1736
09-05 49° 74° 6876 5061 3481 2382 1743
09-06 46° 81° 6917 5093 3502 2395 1751
09-07 63° 81° 6967 5133 3532 2417 1768
09-08 61° 78° 7015 5170 3560 2437 1783
09-09 59° 86° 7065 5210 3590 2459 1800
09-10 76° 94° 7129 5264 3633 2495 1830
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-11 67° 88° 7184 5309 3669 2522 1853
09-12 56° 78° 7229 5345 3694 2539 1865
09-13 47° 65° 7264 5369 3708 2546 1866
09-14 37° 70° 7295 5391 3720 2549 1866
09-15 48° 60° 7327 5413 3732 2553 1866
09-16 46° 62° 7359 5435 3744 2557 1866
09-17 36° 69° 7390 5455 3755 2560 1866
09-18 48° 81° 7433 5488 3778 2575 1876
09-19 61° 76° 7479 5525 3804 2593 1890
09-20 64° 72° 7526 5561 3830 2612 1903
09-21 53° 66° 7563 5588 3848 2621 1907
09-22 46° 55° 7592 5607 3856 2622 1907
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-23 38° 64° 7621 5626 3865 2623 1907
09-24 39° 69° 7653 5648 3877 2627 1907
09-25 43° 73° 7689 5674 3894 2635 1910
09-26 45° 76° 7728 5703 3912 2646 1916
09-27 45° 80° 7768 5733 3933 2658 1924
09-28 50° 82° 7812 5768 3957 2674 1935
09-29 53° 71° 7852 5797 3977 2686 1942
09-30 49° 72° 7891 5826 3996 2697 1948

 

Latest Updates

March 2nd, 2014Ready, Set... Reset, Go!

The GDD totals were mistakenly reset on Jan 3rd instead of Feb 15th. This has been corrected. Some alerts may be resent due to the change. Thank you!
 

April 9th, 2013GDDTracker Expands Coverage

With initial funding provided by the Michigan State University and the Michigan Turfgrass Foundation, GDDTracker has been helping turf managers schedule Poa annua seedhead suppression applications throughout the Great Lakes states since 2004. Over the last couple years we've been considering several strategies for expanding the geographical reach of GDDTracker beyond our base region. After much consideration we have decided to expand coverage from Colorado to the atlantic coast. Historically the models we've used to schedule PGR applications to suppress Poa seedheads in our region have been successful but as we move outside of our immediate comfort zone users should keep in mind that the ultimate combination of personal observations, experience, and GDD models should all be considered when scheduling applications. Although GDDTracker started as a guide for scheduling PGR applications for Poa seedhead suppression, over the years we have added models for crabgrass preemergence, spring broadleaf, and others. As GDDTracker grows we will continue to move forward with additional models. We hope you find GDDTracker useful for your operation and as always your feedback is always encouraged.