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Bluegrass Billbug Activity - OSU (GDD 50)
through Wed, Mar. 12. 2025

 

GDD Total: 2 (Base 50) through Wed, Mar. 12, 2025

  

Schererville, IN

        

Forecast »

“Flashback” to 2024

3/6

3/7

3/8

3/9

3/10

3/11

3/12

3/13

3/14

3/15

3/16

3/17

3/18

Visual turfgrass damage

1330

Larvae emergence - contacts

926

Larvae hatch; stem tunneling

650

Egg Lay - systemics

560

First Emergence

280

Under

0

 

Generously Supported By:



Tabular Data

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

2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-15 25° 34° 8 0 0 0 0
02-16 14° 30° 8 0 0 0 0
02-17 3° 12° 8 0 0 0 0
02-18 -6° 14° 8 0 0 0 0
02-19 5° 20° 8 0 0 0 0
02-20 1° 23° 8 0 0 0 0
02-21 8° 31° 8 0 0 0 0
02-22 12° 36° 10 0 0 0 0
02-23 21° 48° 22 3 0 0 0
02-24 37° 55° 46 17 4 0 0
02-25 35° 56° 70 30 7 0 0
02-26 32° 51° 89 39 7 0 0
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 34° 51° 109 50 7 0 0
02-28 30° 59° 132 62 10 0 0
02-29 n/a n/a n/a n/a n/a n/a n/a
03-01 20° 39° 139 62 10 0 0
03-02 15° 37° 143 62 10 0 0
03-03 27° 44° 157 66 10 0 0
03-04 41° 47° 179 77 12 0 0
03-05 29° 51° 197 86 12 0 0
03-06 26° 39° 208 86 12 0 0
03-07 31° 37° 219 88 12 0 0
03-08 30° 48° 237 95 12 0 0
03-09 31° 57° 259 107 14 0 0
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-10 37° 67° 288 127 23 2 0
03-11 35° 55° 312 141 27 2 0
03-12 33° 57° 335 154 30 2 0
03-13 32° 66° 362 171 37 2 0
03-14 49° 75° 402 201 57 14 7
03-15 53° 67° 440 229 75 24 12
03-16 34° 43° 457 236 75 24 12
03-17 28° 57° 477 246 76 24 12
03-18 45° 68° 512 270 90 31 14
03-19 46° 60° 543 291 101 34 14
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-15 32° 44° 16 6 0 0 0
02-16 24° 30° 21 6 0 0 0
02-17 12° 24° 21 6 0 0 0
02-18 18° 43° 29 6 0 0 0
02-19 22° 48° 42 9 0 0 0
02-20 28° 55° 62 18 0 0 0
02-21 42° 64° 93 39 11 3 0
02-22 41° 52° 118 54 16 3 0
02-23 29° 47° 134 60 16 3 0
02-24 21° 33° 139 60 16 3 0
02-25 31° 59° 162 73 19 3 0
02-26 36° 70° 193 95 30 6 0
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 55° 70° 234 125 50 19 7
02-28 23° 59° 253 134 50 19 7
02-29 20° 44° 263 134 50 19 7
03-01 27° 44° 276 138 50 19 7
03-02 33° 58° 300 151 54 19 7
03-03 41° 71° 334 175 68 25 8
03-04 52° 71° 374 205 88 37 15
03-05 38° 62° 402 223 96 37 15
03-06 36° 48° 422 234 96 37 15
03-07 35° 48° 442 243 96 37 15
03-08 41° 51° 466 257 100 37 15
03-09 32° 45° 482 264 100 37 15
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-10 30° 45° 498 269 100 37 15
03-11 28° 64° 522 284 104 37 15
03-12 42° 69° 556 307 118 42 16
03-13 46° 70° 592 333 134 50 19
03-14 44° 68° 626 357 148 56 20
03-15 37° 48° 646 368 148 56 20
03-16 36° 60° 672 384 155 56 20
03-17 32° 42° 688 389 155 56 20
03-18 25° 34° 695 389 155 56 20
03-19 28° 57° 716 400 156 56 20
03-20 28° 46° 731 405 156 56 20
03-21 23° 41° 741 405 156 56 20
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-22 31° 47° 758 412 156 56 20
03-23 28° 36° 768 412 156 56 20
03-24 29° 50° 786 420 156 56 20
03-25 44° 66° 819 443 169 61 20
03-26 35° 56° 843 457 172 61 20
03-27 29° 43° 857 461 172 61 20
03-28 26° 52° 874 468 172 61 20
03-29 34° 57° 897 481 176 61 20
03-30 41° 63° 927 501 186 64 20
03-31 37° 53° 951 515 189 64 20
04-01 43° 52° 976 530 195 64 20
04-02 36° 59° 1001 545 200 64 20
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-03 34° 37° 1015 549 200 64 20
04-04 36° 40° 1031 555 200 64 20
04-05 37° 46° 1050 564 200 64 20
04-06 31° 53° 1070 574 200 64 20
04-07 38° 53° 1093 587 203 64 20
04-08 46° 73° 1130 614 221 73 24
04-09 52° 64° 1166 640 236 81 27
04-10 42° 66° 1198 662 248 85 27
04-11 49° 54° 1228 682 258 86 27
04-12 48° 61° 1260 704 270 90 27
04-13 40° 71° 1293 727 283 96 27
04-14 61° 79° 1341 765 311 116 42
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-15 49° 69° 1378 792 329 125 46
04-16 53° 76° 1421 825 351 139 56
04-17 61° 67° 1462 856 373 153 64
04-18 46° 64° 1496 880 386 158 65
04-19 42° 56° 1523 897 393 158 65
04-20 35° 47° 1542 906 393 158 65
04-21 33° 47° 1560 914 393 158 65
04-22 37° 65° 1589 933 402 159 65
04-23 51° 57° 1621 955 414 164 65
04-24 33° 52° 1642 966 415 164 65
04-25 30° 59° 1664 978 418 164 65
04-26 42° 60° 1693 997 427 165 65
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-27 58° 77° 1739 1033 452 182 77
04-28 61° 75° 1785 1069 478 200 90
04-29 60° 69° 1827 1101 501 215 100
04-30 48° 74° 1867 1131 520 226 106
05-01 59° 76° 1912 1166 545 243 118
05-02 52° 81° 1956 1200 570 260 130
05-03 53° 64° 1993 1227 586 268 133
05-04 49° 81° 2036 1260 609 283 143
05-05 49° 65° 2071 1285 624 290 145
05-06 46° 75° 2109 1313 643 301 151
05-07 57° 76° 2154 1348 668 318 162
05-08 53° 79° 2198 1382 692 334 174
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-09 52° 68° 2236 1410 710 344 179
05-10 48° 67° 2272 1436 725 351 181
05-11 50° 66° 2308 1462 741 359 184
05-12 47° 83° 2351 1495 764 374 194
05-13 61° 79° 2399 1533 793 395 209
05-14 53° 63° 2435 1559 808 402 212
05-15 54° 67° 2474 1588 827 413 218
05-16 51° 73° 2514 1618 847 425 225
05-17 58° 79° 2560 1654 873 443 238
05-18 59° 84° 2610 1694 903 465 255
05-19 63° 77° 2658 1732 932 486 271
05-20 61° 87° 2711 1775 964 510 290
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-21 62° 89° 2764 1818 997 535 310
05-22 64° 80° 2815 1859 1028 558 328
05-23 55° 80° 2860 1894 1053 575 340
05-24 63° 78° 2909 1933 1082 596 356
05-25 59° 74° 2953 1967 1107 613 368
05-26 55° 75° 2997 2001 1130 628 378
05-27 58° 73° 3040 2034 1154 644 389
05-28 54° 72° 3082 2066 1175 657 397
05-29 53° 68° 3120 2094 1193 667 402
05-30 45° 71° 3156 2120 1210 676 406
05-31 49° 79° 3198 2152 1232 690 415
06-01 60° 69° 3241 2185 1254 704 424
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-02 57° 76° 3286 2220 1279 721 436
06-03 55° 87° 3335 2259 1308 742 452
06-04 69° 86° 3390 2304 1344 770 475
06-05 69° 80° 3443 2347 1376 794 494
06-06 65° 79° 3493 2387 1406 816 511
06-07 59° 79° 3540 2424 1433 835 525
06-08 57° 81° 3587 2461 1460 854 539
06-09 53° 80° 3632 2496 1485 871 551
06-10 54° 66° 3670 2524 1503 881 556
06-11 45° 79° 3710 2554 1523 893 563
06-12 64° 92° 3766 2600 1559 921 586
06-13 72° 91° 3826 2650 1599 953 613
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-14 65° 86° 3879 2693 1633 979 634
06-15 59° 85° 3929 2733 1662 1000 650
06-16 65° 93° 3986 2780 1700 1030 674
06-17 77° 94° 4050 2834 1743 1065 705
06-18 76° 91° 4111 2885 1784 1098 733
06-19 76° 92° 4173 2937 1827 1133 762
06-20 68° 91° 4231 2985 1864 1162 787
06-21 67° 92° 4288 3032 1901 1191 811
06-22 75° 91° 4349 3083 1943 1225 839
06-23 68° 84° 4404 3128 1977 1251 861
06-24 62° 86° 4456 3170 2009 1275 880
06-25 70° 82° 4509 3213 2043 1301 901
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-26 70° 85° 4565 3259 2078 1328 923
06-27 62° 74° 4611 3295 2104 1346 936
06-28 61° 77° 4657 3331 2131 1365 950
06-29 72° 89° 4716 3380 2169 1395 975
06-30 58° 77° 4761 3415 2195 1413 988
07-01 49° 76° 4802 3446 2216 1426 996
07-02 61° 84° 4853 3487 2247 1449 1013
07-03 73° 87° 4911 3535 2285 1479 1039
07-04 68° 82° 4965 3579 2318 1504 1059
07-05 63° 83° 5016 3620 2349 1527 1077
07-06 62° 79° 5065 3659 2378 1548 1093
07-07 61° 88° 5118 3702 2411 1573 1113
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-08 68° 86° 5172 3746 2446 1600 1135
07-09 69° 76° 5223 3787 2476 1622 1152
07-10 65° 81° 5274 3828 2508 1646 1170
07-11 65° 80° 5325 3869 2538 1668 1188
07-12 65° 85° 5377 3911 2571 1693 1208
07-13 66° 90° 5433 3957 2606 1720 1230
07-14 67° 85° 5487 4001 2641 1747 1252
07-15 67° 88° 5543 4047 2676 1774 1274
07-16 67° 83° 5596 4090 2709 1799 1294
07-17 66° 82° 5648 4132 2741 1823 1313
07-18 62° 73° 5693 4167 2767 1841 1325
07-19 53° 78° 5737 4201 2790 1856 1336
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-20 56° 79° 5782 4236 2816 1874 1348
07-21 61° 82° 5832 4276 2845 1895 1365
07-22 63° 82° 5882 4316 2876 1918 1383
07-23 63° 84° 5934 4358 2907 1941 1401
07-24 65° 77° 5983 4397 2936 1962 1417
07-25 61° 79° 6031 4435 2964 1982 1432
07-26 53° 80° 6075 4469 2989 1999 1444
07-27 58° 83° 6124 4508 3017 2019 1459
07-28 66° 81° 6176 4550 3049 2043 1478
07-29 71° 85° 6231 4595 3085 2071 1501
07-30 68° 91° 6289 4643 3122 2100 1525
07-31 69° 89° 6346 4690 3159 2129 1549
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-01 71° 87° 6402 4736 3195 2157 1572
08-02 69° 82° 6456 4780 3229 2183 1593
08-03 68° 90° 6513 4827 3266 2212 1617
08-04 68° 89° 6569 4873 3303 2241 1641
08-05 71° 92° 6629 4923 3342 2272 1667
08-06 69° 80° 6682 4966 3375 2297 1687
08-07 64° 78° 6731 5005 3404 2318 1703
08-08 59° 83° 6779 5043 3433 2339 1719
08-09 61° 73° 6825 5079 3458 2356 1731
08-10 54° 74° 6867 5111 3480 2370 1740
08-11 54° 77° 6910 5144 3503 2385 1750
08-12 54° 78° 6954 5178 3527 2401 1761
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-13 55° 83° 7001 5215 3554 2420 1775
08-14 58° 85° 7050 5254 3584 2442 1791
08-15 65° 75° 7099 5293 3612 2462 1807
08-16 67° 86° 7153 5337 3646 2488 1828
08-17 66° 77° 7203 5377 3676 2510 1845
08-18 66° 75° 7251 5415 3705 2531 1861
08-19 64° 75° 7299 5453 3732 2550 1875
08-20 56° 71° 7340 5484 3753 2563 1883
08-21 49° 75° 7380 5514 3774 2576 1890
08-22 49° 77° 7421 5545 3795 2589 1899
08-23 50° 80° 7465 5579 3818 2604 1909
08-24 57° 90° 7516 5620 3849 2627 1927
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-25 69° 90° 7573 5667 3887 2657 1952
08-26 74° 93° 7635 5719 3928 2690 1980
08-27 74° 96° 7698 5772 3971 2725 2010
08-28 70° 83° 7752 5816 4005 2751 2031
08-29 69° 88° 7808 5862 4042 2780 2055
08-30 73° 88° 7867 5911 4080 2810 2080
08-31 64° 84° 7919 5953 4112 2834 2099
09-01 62° 75° 7965 5989 4138 2852 2112
09-02 52° 74° 8006 6020 4159 2865 2120
09-03 50° 76° 8047 6051 4181 2879 2129
09-04 50° 83° 8092 6086 4205 2895 2140
09-05 61° 88° 8144 6128 4237 2919 2159
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-06 58° 74° 8188 6162 4261 2935 2170
09-07 49° 65° 8223 6187 4276 2942 2172
09-08 44° 71° 8258 6212 4292 2950 2175
09-09 50° 79° 8301 6245 4315 2965 2185
09-10 50° 81° 8345 6279 4338 2980 2195
09-11 51° 86° 8392 6316 4365 2999 2209
09-12 57° 88° 8443 6357 4396 3022 2227
09-13 61° 85° 8494 6398 4427 3045 2245
09-14 62° 88° 8547 6441 4460 3070 2265
09-15 62° 88° 8600 6484 4493 3095 2285
09-16 57° 89° 8651 6525 4524 3118 2303
09-17 55° 85° 8699 6563 4552 3138 2318
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-18 55° 88° 8748 6602 4582 3160 2335
09-19 56° 89° 8799 6643 4612 3182 2352
09-20 65° 86° 8853 6687 4646 3208 2373
09-21 59° 90° 8906 6730 4679 3233 2393
09-22 65° 72° 8952 6766 4705 3251 2406
09-23 60° 66° 8993 6797 4726 3264 2414
09-24 62° 67° 9036 6830 4749 3279 2424
09-25 56° 75° 9079 6863 4773 3295 2435
09-26 51° 77° 9121 6895 4794 3308 2443
09-27 62° 72° 9166 6930 4820 3326 2456
09-28 62° 69° 9210 6964 4843 3341 2466
09-29 64° 74° 9257 7001 4870 3360 2480
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-30 60° 76° 9303 7037 4896 3378 2493

 

Latest Updates

February 15th, 2025Welcome to the 2025 GDD Tracking Season

Although winter seems very much entrenched in the Great Lakes region with snow and frigid temperatures in the forecast, GDDTracker starts counting on February 15. Spring is when GDDTracker receives the most attention for alerting turfgrass managers of optimal application timing windows for suppressing annual bluegrass seedheads and crabgrass preemergence applications. Beyond the spring models, there are several models that may be helpful throughout the season including the early season dollar spot DMI timer and the 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 successful 2025!
 

March 18th, 2024Timing crabgrass preemergence applications in spring

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


 

 

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