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Ester/Amine Spring Broadleaf Herbicide Timer - Purdue (GDD 50)
through Tue, Oct. 29. 2024

 
  

Milwaukee, WI

        

Generously Supported By:



Tabular Data

Daily GDD accumulation for various base temperature models in 2024 & 2023

2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-15 21° 36° 7 0 0 0 0
02-16 10° 26° 7 0 0 0 0
02-17 6° 27° 7 0 0 0 0
02-18 22° 38° 15 0 0 0 0
02-19 18° 41° 22 0 0 0 0
02-20 24° 50° 38 5 0 0 0
02-21 38° 57° 63 21 6 0 0
02-22 31° 58° 86 34 8 0 0
02-23 21° 44° 96 34 8 0 0
02-24 11° 29° 96 34 8 0 0
02-25 26° 56° 116 43 8 0 0
02-26 31° 54° 136 54 9 0 0
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 50° 74° 176 84 29 12 7
02-28 14° 49° 186 84 29 12 7
02-29 13° 41° 191 84 29 12 7
03-01 29° 49° 208 91 29 12 7
03-02 31° 57° 230 103 31 12 7
03-03 39° 66° 260 124 42 14 7
03-04 40° 61° 289 143 51 15 7
03-05 35° 44° 307 150 51 15 7
03-06 32° 46° 324 157 51 15 7
03-07 32° 42° 339 162 51 15 7
03-08 36° 42° 356 169 51 15 7
03-09 31° 38° 368 171 51 15 7
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-10 26° 45° 382 175 51 15 7
03-11 29° 64° 406 189 55 15 7
03-12 51° 68° 443 217 73 25 11
03-13 40° 62° 473 236 82 26 11
03-14 38° 48° 494 247 83 26 11
03-15 31° 49° 512 255 83 26 11
03-16 36° 52° 533 267 85 26 11
03-17 26° 37° 543 267 85 26 11
03-18 21° 33° 548 267 85 26 11
03-19 27° 53° 566 275 85 26 11
03-20 25° 36° 575 275 85 26 11
03-21 21° 33° 579 275 85 26 11
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-22 28° 34° 589 275 85 26 11
03-23 20° 33° 593 275 85 26 11
03-24 26° 37° 602 275 85 26 11
03-25 36° 52° 624 287 86 26 11
03-26 32° 55° 646 298 88 26 11
03-27 27° 38° 657 299 88 26 11
03-28 25° 43° 668 301 88 26 11
03-29 24° 46° 682 304 88 26 11
03-30 35° 42° 698 310 88 26 11
03-31 34° 44° 714 317 88 26 11
04-01 33° 43° 730 323 88 26 11
04-02 32° 38° 744 326 88 26 11
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-03 32° 38° 757 329 88 26 11
04-04 33° 39° 771 333 88 26 11
04-05 33° 48° 789 342 88 26 11
04-06 30° 51° 808 350 88 26 11
04-07 33° 47° 826 358 88 26 11
04-08 40° 64° 856 378 98 28 11
04-09 45° 60° 887 399 109 31 11
04-10 43° 68° 920 423 123 37 12
04-11 47° 60° 952 444 134 40 12
04-12 46° 60° 983 465 145 43 12
04-13 39° 68° 1014 487 156 46 12
04-14 54° 78° 1058 520 180 62 23
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-15 42° 69° 1092 544 194 68 23
04-16 45° 57° 1121 563 203 69 23
04-17 50° 61° 1154 587 217 75 24
04-18 44° 51° 1180 602 222 75 24
04-19 36° 53° 1202 615 224 75 24
04-20 32° 42° 1217 620 224 75 24
04-21 30° 48° 1234 627 224 75 24
04-22 37° 65° 1263 645 233 75 24
04-23 42° 69° 1297 669 247 81 25
04-24 33° 46° 1315 677 247 81 25
04-25 29° 54° 1334 686 247 81 25
04-26 36° 54° 1357 699 250 81 25
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-27 50° 79° 1400 732 273 96 35
04-28 42° 65° 1431 754 284 100 35
04-29 49° 68° 1468 780 301 108 38
04-30 48° 69° 1504 807 317 117 42
05-01 56° 73° 1547 839 340 131 51
05-02 51° 64° 1583 865 356 139 54
05-03 52° 71° 1622 894 375 150 60
05-04 44° 74° 1659 921 392 159 64
05-05 45° 64° 1692 944 405 164 64
05-06 44° 65° 1725 967 418 169 64
05-07 49° 60° 1757 990 430 174 64
05-08 48° 71° 1795 1017 448 183 68
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-09 50° 57° 1826 1038 459 186 68
05-10 42° 68° 1859 1061 472 191 68
05-11 47° 65° 1893 1085 486 197 70
05-12 45° 82° 1934 1116 507 210 78
05-13 52° 75° 1976 1148 529 224 87
05-14 46° 56° 2005 1167 538 225 87
05-15 44° 65° 2038 1190 551 230 87
05-16 45° 74° 2075 1218 568 240 91
05-17 53° 72° 2116 1248 589 252 99
05-18 52° 84° 2162 1284 615 270 112
05-19 59° 74° 2206 1319 639 287 123
05-20 56° 66° 2245 1348 658 298 129
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-21 57° 75° 2289 1382 682 314 140
05-22 59° 74° 2334 1416 707 330 152
05-23 53° 77° 2377 1449 730 345 162
05-24 53° 68° 2415 1478 748 356 167
05-25 50° 72° 2455 1507 768 367 174
05-26 54° 62° 2490 1533 783 375 176
05-27 55° 68° 2530 1562 803 386 183
05-28 53° 67° 2568 1590 821 396 188
05-29 51° 64° 2603 1616 836 404 190
05-30 42° 66° 2635 1638 848 408 190
05-31 41° 77° 2672 1665 865 417 194
06-01 57° 68° 2713 1695 886 429 202
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-02 54° 77° 2756 1729 909 445 213
06-03 55° 79° 2802 1764 935 462 225
06-04 64° 80° 2852 1804 965 484 242
06-05 65° 77° 2901 1843 994 505 258
06-06 58° 69° 2943 1875 1016 519 267
06-07 56° 74° 2986 1908 1039 534 277
06-08 55° 69° 3026 1938 1059 546 284
06-09 54° 75° 3068 1971 1081 561 294
06-10 48° 66° 3103 1996 1096 568 296
06-11 44° 73° 3140 2022 1113 576 299
06-12 60° 88° 3192 2064 1145 600 318
06-13 70° 84° 3247 2109 1180 627 340
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-14 59° 74° 3291 2144 1204 644 351
06-15 54° 75° 3334 2176 1227 658 361
06-16 65° 89° 3389 2221 1262 685 383
06-17 70° 91° 3447 2270 1300 716 408
06-18 74° 91° 3508 2320 1341 748 436
06-19 72° 90° 3567 2369 1380 779 462
06-20 61° 72° 3612 2404 1405 796 474
06-21 62° 78° 3660 2442 1433 816 489
06-22 61° 78° 3708 2480 1461 836 504
06-23 66° 75° 3756 2519 1489 857 519
06-24 58° 77° 3802 2554 1515 874 532
06-25 70° 88° 3859 2602 1552 904 556
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-26 62° 83° 3909 2642 1582 926 574
06-27 54° 70° 3950 2672 1603 938 581
06-28 60° 73° 3994 2707 1627 955 592
06-29 67° 83° 4048 2750 1661 980 613
06-30 54° 69° 4087 2780 1680 992 619
07-01 49° 69° 4125 2807 1698 1001 624
07-02 59° 68° 4167 2839 1720 1015 633
07-03 66° 85° 4221 2883 1754 1041 654
07-04 66° 81° 4272 2925 1785 1065 672
07-05 64° 76° 4320 2963 1813 1085 688
07-06 59° 77° 4367 2999 1840 1103 701
07-07 59° 80° 4414 3037 1867 1123 715
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-08 67° 82° 4467 3079 1900 1147 735
07-09 65° 79° 4517 3119 1930 1169 752
07-10 65° 78° 4567 3159 1960 1191 769
07-11 63° 81° 4616 3199 1989 1213 786
07-12 59° 84° 4666 3239 2019 1235 802
07-13 61° 86° 4718 3280 2051 1258 821
07-14 67° 86° 4772 3324 2085 1284 842
07-15 69° 88° 4828 3371 2121 1313 866
07-16 69° 80° 4881 3413 2154 1337 885
07-17 62° 76° 4928 3451 2181 1357 899
07-18 54° 74° 4971 3483 2204 1371 909
07-19 55° 79° 5016 3518 2229 1388 921
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-20 60° 81° 5064 3557 2257 1409 936
07-21 63° 76° 5112 3594 2285 1428 951
07-22 60° 81° 5161 3633 2314 1449 967
07-23 63° 79° 5209 3672 2342 1470 983
07-24 62° 73° 5255 3707 2368 1487 995
07-25 55° 74° 5297 3740 2390 1502 1004
07-26 52° 79° 5340 3773 2413 1517 1015
07-27 59° 84° 5390 3812 2443 1538 1031
07-28 62° 80° 5439 3852 2472 1560 1047
07-29 68° 77° 5490 3892 2503 1582 1065
07-30 66° 87° 5544 3937 2537 1609 1086
07-31 69° 90° 5602 3984 2575 1638 1111
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-01 67° 81° 5654 4026 2607 1662 1130
08-02 65° 85° 5707 4069 2640 1687 1150
08-03 68° 83° 5760 4113 2673 1713 1170
08-04 66° 84° 5814 4156 2707 1738 1191
08-05 67° 75° 5863 4195 2736 1759 1207
08-06 60° 70° 5906 4228 2759 1774 1217
08-07 57° 74° 5949 4262 2782 1790 1227
08-08 57° 78° 5995 4297 2808 1807 1240
08-09 52° 66° 6032 4324 2825 1816 1244
08-10 52° 72° 6072 4355 2845 1829 1251
08-11 54° 77° 6116 4388 2869 1844 1262
08-12 57° 80° 6162 4424 2895 1862 1275
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-13 59° 81° 6210 4463 2923 1883 1290
08-14 58° 81° 6258 4500 2951 1902 1305
08-15 65° 70° 6303 4536 2976 1920 1317
08-16 68° 82° 6356 4579 3009 1945 1338
08-17 66° 77° 6406 4619 3039 1967 1355
08-18 65° 76° 6455 4657 3068 1987 1370
08-19 57° 74° 6498 4691 3091 2003 1381
08-20 53° 69° 6538 4720 3111 2014 1387
08-21 49° 72° 6576 4748 3129 2024 1392
08-22 49° 76° 6616 4779 3149 2037 1399
08-23 56° 79° 6661 4814 3174 2054 1412
08-24 58° 83° 6710 4852 3203 2074 1427
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-25 64° 88° 6764 4896 3237 2100 1448
08-26 75° 93° 6826 4949 3279 2135 1477
08-27 76° 89° 6887 4999 3320 2167 1505
08-28 67° 75° 6936 5038 3349 2188 1521
08-29 64° 75° 6983 5076 3376 2208 1535
08-30 65° 78° 7033 5115 3406 2229 1552
08-31 57° 82° 7080 5152 3433 2248 1566
09-01 57° 73° 7123 5186 3456 2264 1576
09-02 50° 74° 7163 5216 3476 2276 1583
09-03 52° 76° 7205 5248 3498 2290 1592
09-04 52° 79° 7249 5281 3522 2305 1603
09-05 55° 81° 7295 5317 3548 2323 1616
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-06 51° 64° 7331 5343 3564 2331 1619
09-07 43° 62° 7361 5364 3574 2334 1619
09-08 44° 73° 7398 5390 3591 2342 1622
09-09 58° 80° 7445 5427 3618 2361 1636
09-10 53° 82° 7490 5463 3643 2379 1649
09-11 61° 85° 7541 5504 3674 2402 1667
09-12 54° 83° 7588 5541 3701 2421 1681
09-13 58° 78° 7634 5577 3727 2439 1694
09-14 59° 82° 7683 5615 3756 2459 1710
09-15 60° 84° 7733 5655 3786 2481 1727
09-16 57° 86° 7782 5695 3815 2503 1743
09-17 54° 83° 7829 5732 3842 2522 1757
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-18 52° 80° 7873 5766 3866 2538 1768
09-19 54° 86° 7921 5804 3894 2558 1783
09-20 64° 84° 7973 5845 3926 2581 1802
09-21 55° 86° 8021 5884 3954 2602 1817
09-22 59° 68° 8063 5916 3976 2616 1826
09-23 49° 65° 8098 5941 3991 2623 1828
09-24 57° 63° 8136 5969 4009 2633 1833
09-25 52° 73° 8177 5999 4030 2645 1840
09-26 53° 76° 8219 6031 4052 2659 1849
09-27 54° 73° 8260 6063 4073 2673 1858
09-28 59° 75° 8305 6098 4098 2690 1870
09-29 59° 74° 8350 6132 4123 2706 1881
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-30 54° 77° 8393 6165 4146 2721 1892
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-15 33° 48° 19 9 0 0 0
02-16 21° 33° 24 9 0 0 0
02-17 10° 22° 24 9 0 0 0
02-18 16° 38° 29 9 0 0 0
02-19 32° 44° 45 15 0 0 0
02-20 24° 40° 55 15 0 0 0
02-21 19° 37° 61 15 0 0 0
02-22 25° 30° 67 15 0 0 0
02-23 22° 34° 73 15 0 0 0
02-24 8° 21° 73 15 0 0 0
02-25 19° 32° 77 15 0 0 0
02-26 21° 39° 85 15 0 0 0
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 27° 36° 94 15 0 0 0
02-28 32° 44° 111 21 0 0 0
02-29 n/a n/a n/a n/a n/a n/a n/a
03-01 34° 49° 130 31 0 0 0
03-02 29° 37° 142 32 0 0 0
03-03 29° 36° 152 33 0 0 0
03-04 27° 47° 167 38 0 0 0
03-05 27° 46° 182 43 0 0 0
03-06 33° 41° 197 48 0 0 0
03-07 31° 42° 212 53 0 0 0
03-08 27° 44° 225 56 0 0 0
03-09 32° 38° 238 59 0 0 0
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-10 30° 34° 248 59 0 0 0
03-11 27° 33° 256 59 0 0 0
03-12 26° 34° 265 59 0 0 0
03-13 22° 28° 268 59 0 0 0
03-14 12° 31° 268 59 0 0 0
03-15 17° 42° 276 59 0 0 0
03-16 37° 42° 293 67 0 0 0
03-17 21° 41° 303 67 0 0 0
03-18 9° 24° 303 67 0 0 0
03-19 17° 40° 309 67 0 0 0
03-20 29° 49° 327 74 0 0 0
03-21 31° 48° 344 82 0 0 0
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-22 37° 49° 365 93 1 0 0
03-23 31° 45° 381 99 1 0 0
03-24 27° 41° 393 101 1 0 0
03-25 31° 39° 406 104 1 0 0
03-26 23° 43° 417 105 1 0 0
03-27 28° 43° 431 108 1 0 0
03-28 28° 44° 445 112 1 0 0
03-29 26° 35° 453 112 1 0 0
03-30 19° 41° 461 112 1 0 0
03-31 40° 51° 485 126 5 0 0
04-01 31° 48° 502 133 5 0 0
04-02 27° 47° 518 139 5 0 0
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-03 41° 59° 546 157 13 0 0
04-04 39° 47° 567 168 14 0 0
04-05 36° 66° 596 187 23 1 0
04-06 30° 51° 614 195 23 1 0
04-07 28° 43° 628 199 23 1 0
04-08 33° 61° 653 214 28 1 0
04-09 35° 67° 681 232 36 2 0
04-10 49° 71° 720 261 55 12 5
04-11 54° 77° 763 294 78 28 16
04-12 60° 82° 812 333 107 49 32
04-13 58° 83° 861 372 136 69 47
04-14 53° 82° 906 407 161 87 60
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-15 62° 81° 956 447 191 108 76
04-16 34° 65° 983 464 198 108 76
04-17 30° 35° 994 465 198 108 76
04-18 32° 54° 1015 476 199 108 76
04-19 35° 43° 1032 483 199 108 76
04-20 40° 75° 1067 508 214 116 79
04-21 39° 58° 1093 524 220 116 79
04-22 33° 44° 1110 531 220 116 79
04-23 33° 40° 1124 535 220 116 79
04-24 27° 48° 1140 541 220 116 79
04-25 34° 44° 1157 548 220 116 79
04-26 31° 48° 1174 555 220 116 79
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-27 31° 64° 1200 571 226 116 79
04-28 37° 60° 1226 587 232 116 79
04-29 37° 50° 1248 599 234 116 79
04-30 37° 42° 1265 606 234 116 79
05-01 35° 44° 1283 614 234 116 79
05-02 40° 49° 1305 626 236 116 79
05-03 34° 56° 1328 639 239 116 79
05-04 41° 66° 1360 661 251 119 79
05-05 54° 74° 1402 693 272 133 87
05-06 52° 62° 1437 718 288 140 90
05-07 49° 79° 1479 750 309 154 98
05-08 49° 53° 1507 768 318 155 98
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-09 48° 69° 1544 795 335 163 102
05-10 47° 75° 1583 824 354 174 108
05-11 49° 79° 1625 856 376 188 117
05-12 55° 70° 1666 887 397 201 125
05-13 55° 66° 1704 915 415 211 130
05-14 47° 58° 1735 936 426 214 130
05-15 38° 71° 1767 958 438 219 130
05-16 49° 78° 1809 990 460 232 139
05-17 39° 55° 1834 1005 465 232 139
05-18 37° 68° 1865 1026 476 235 139
05-19 54° 65° 1902 1053 493 244 143
05-20 44° 72° 1938 1079 509 252 146
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-21 52° 78° 1981 1112 532 267 156
05-22 48° 75° 2020 1141 551 278 162
05-23 50° 81° 2064 1175 575 294 173
05-24 51° 61° 2098 1199 589 300 174
05-25 45° 60° 2128 1219 599 302 174
05-26 38° 68° 2159 1240 610 305 174
05-27 41° 74° 2194 1265 625 312 177
05-28 48° 78° 2235 1296 646 326 185
05-29 50° 80° 2279 1330 670 341 195
05-30 52° 86° 2326 1367 697 360 209
05-31 62° 89° 2379 1410 730 385 229
06-01 61° 89° 2432 1453 763 410 249
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-02 61° 87° 2483 1494 794 434 268
06-03 60° 85° 2534 1535 825 456 285
06-04 59° 76° 2579 1570 850 473 297
06-05 55° 84° 2627 1608 877 493 312
06-06 58° 71° 2669 1640 900 508 322
06-07 51° 71° 2708 1669 919 519 328
06-08 46° 73° 2746 1697 937 528 332
06-09 47° 78° 2787 1728 957 541 340
06-10 59° 83° 2835 1766 986 561 355
06-11 50° 59° 2868 1789 999 566 355
06-12 42° 68° 2901 1812 1012 571 356
06-13 53° 60° 2935 1836 1026 578 357
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-14 56° 72° 2977 1868 1048 592 366
06-15 52° 63° 3013 1894 1064 600 369
06-16 52° 68° 3051 1922 1082 610 374
06-17 50° 79° 3094 1955 1105 624 383
06-18 55° 77° 3138 1989 1129 640 395
06-19 57° 83° 3186 2027 1157 660 410
06-20 57° 81° 3233 2064 1184 679 423
06-21 60° 85° 3283 2104 1214 701 441
06-22 60° 85° 3334 2145 1244 724 458
06-23 60° 85° 3384 2185 1275 746 476
06-24 59° 89° 3436 2227 1307 770 495
06-25 66° 79° 3487 2268 1337 793 512
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-26 65° 72° 3533 2304 1364 811 526
06-27 59° 75° 3578 2339 1389 828 538
06-28 54° 81° 3623 2374 1414 845 550
06-29 65° 87° 3677 2418 1448 871 571
06-30 67° 89° 3733 2464 1484 899 594
07-01 70° 83° 3787 2508 1518 926 615
07-02 66° 81° 3839 2550 1550 949 633
07-03 60° 87° 3890 2591 1581 972 652
07-04 67° 91° 3948 2639 1619 1002 676
07-05 70° 89° 4005 2686 1656 1032 701
07-06 63° 76° 4053 2724 1684 1051 716
07-07 56° 77° 4098 2759 1709 1068 727
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-08 60° 78° 4145 2796 1736 1087 741
07-09 57° 79° 4190 2831 1761 1105 754
07-10 64° 88° 4245 2876 1795 1131 775
07-11 64° 79° 4294 2915 1825 1152 792
07-12 58° 72° 4337 2948 1848 1168 802
07-13 55° 74° 4380 2981 1871 1182 812
07-14 65° 87° 4434 3025 1905 1208 833
07-15 66° 84° 4487 3068 1938 1233 853
07-16 62° 80° 4536 3107 1967 1254 869
07-17 57° 76° 4581 3142 1992 1271 881
07-18 55° 78° 4626 3177 2016 1288 892
07-19 58° 85° 4675 3216 2046 1309 909
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-20 64° 81° 4726 3257 2077 1332 926
07-21 58° 82° 4774 3295 2105 1352 942
07-22 62° 80° 4823 3334 2134 1373 958
07-23 59° 82° 4871 3372 2162 1393 973
07-24 63° 85° 4923 3414 2194 1417 992
07-25 65° 90° 4979 3460 2230 1445 1014
07-26 70° 83° 5033 3504 2264 1471 1036
07-27 64° 89° 5087 3548 2298 1498 1057
07-28 68° 90° 5144 3595 2335 1526 1081
07-29 66° 82° 5196 3637 2367 1550 1100
07-30 62° 80° 5245 3676 2396 1571 1116
07-31 56° 80° 5291 3712 2422 1590 1129
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-01 58° 83° 5340 3751 2451 1610 1144
08-02 64° 86° 5393 3794 2484 1635 1165
08-03 65° 87° 5447 3838 2518 1661 1186
08-04 65° 80° 5498 3879 2548 1684 1203
08-05 62° 76° 5545 3916 2576 1703 1217
08-06 63° 76° 5592 3953 2603 1722 1232
08-07 61° 80° 5641 3992 2631 1743 1247
08-08 59° 82° 5689 4030 2660 1763 1263
08-09 60° 81° 5738 4069 2689 1784 1279
08-10 61° 82° 5788 4109 2719 1806 1295
08-11 64° 86° 5841 4152 2752 1831 1316
08-12 62° 82° 5891 4192 2782 1853 1333
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-13 61° 72° 5936 4227 2806 1870 1344
08-14 62° 65° 5977 4258 2828 1883 1353
08-15 60° 75° 6023 4294 2854 1901 1365
08-16 56° 81° 6069 4330 2880 1919 1379
08-17 60° 72° 6114 4365 2904 1936 1390
08-18 53° 76° 6156 4397 2927 1950 1400
08-19 57° 83° 6204 4435 2955 1970 1415
08-20 70° 89° 6262 4483 2992 2000 1439
08-21 61° 77° 6309 4520 3020 2019 1453
08-22 65° 79° 6359 4560 3050 2041 1470
08-23 71° 98° 6422 4613 3092 2076 1500
08-24 68° 88° 6477 4658 3128 2104 1523
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-25 67° 75° 6526 4697 3157 2125 1539
08-26 59° 68° 6568 4729 3179 2138 1548
08-27 57° 73° 6611 4762 3202 2153 1558
08-28 51° 78° 6654 4795 3225 2168 1568
08-29 62° 79° 6703 4834 3254 2189 1584
08-30 52° 68° 6741 4862 3272 2199 1589
08-31 47° 73° 6779 4890 3290 2209 1594
09-01 51° 82° 6823 4924 3314 2225 1605
09-02 60° 87° 6875 4966 3346 2249 1624
09-03 70° 94° 6935 5016 3386 2281 1651
09-04 66° 91° 6992 5063 3423 2310 1675
09-05 73° 88° 7051 5112 3462 2341 1700
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-06 69° 79° 7103 5154 3494 2365 1720
09-07 58° 68° 7144 5185 3515 2378 1728
09-08 54° 65° 7181 5212 3532 2387 1732
09-09 47° 73° 7219 5240 3550 2397 1737
09-10 51° 75° 7260 5271 3571 2410 1744
09-11 57° 62° 7297 5298 3588 2419 1749
09-12 53° 67° 7335 5326 3606 2430 1754
09-13 50° 65° 7371 5352 3622 2437 1757
09-14 44° 71° 7406 5377 3637 2444 1759
09-15 49° 76° 7447 5408 3658 2457 1766
09-16 57° 75° 7491 5442 3682 2473 1777
09-17 54° 67° 7529 5470 3700 2483 1783
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-18 47° 67° 7564 5495 3715 2491 1785
09-19 51° 67° 7601 5522 3732 2499 1789
09-20 56° 78° 7646 5557 3757 2516 1801
09-21 59° 77° 7692 5593 3783 2535 1814
09-22 60° 78° 7739 5630 3810 2553 1828
09-23 61° 77° 7786 5667 3837 2573 1842
09-24 57° 71° 7828 5699 3859 2586 1851
09-25 61° 71° 7873 5734 3883 2603 1862
09-26 63° 65° 7915 5766 3905 2617 1871
09-27 62° 64° 7955 5796 3926 2630 1879
09-28 60° 65° 7996 5827 3946 2642 1886
09-29 54° 71° 8036 5857 3967 2655 1894
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-30 57° 79° 8082 5893 3993 2672 1907

 

Latest Updates

March 18th, 2024Timing crabgrass preemergence applications in spring

Don't miss this update from from Kevin Frank regarding timing of crabgrass preemergence herbicides.


 

February 12th, 2024Welcome to the 2024 GDD Tracking Season

2024 might be the year that if you blinked you missed winter. We've already experienced some very unseasonably warm weather in February with temperatures in the 60's. Temperatures are remaining relatively mild but I wouldn't be surprised if winter resurfaced yet as we move through the rest of February and March. GDDTracker starts counting on February 15. Spring is typically the time of year when GDDTracker receives the most attention for alerting turfgrass managers of optimal application timing windows for suppressing annual bluegrass seedheads and crabgrass preemergence applications. However, there are many models you may find helpful throughout the season including the early season DMI timer and Smith-Kerns dollar spot prediction model. To learn about all the available models, click on the "About" tab at the top of the screen. Thanks for your continued support and use of GDDTracker and best wishes for a fantastic 2024!
 

 

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