Please Note

The GDD models have only been “ground-truthed” in the Great Lakes region. Use of models outside of this region, including the North East, Great Plains and Transition Zones, should be used with caution. We do not recommend the GDD models we use for the mid/southern transition zone and southern states.

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Black Turfgrass Ataenius Egg Laying (GDD 50)
through Wed, Mar. 27. 2024

 

GDD Total: 129 (Base 50) through Wed, Mar. 27, 2024

  

Columbia, MO

       

Forecast »

Over

1400

Second Generation Egg Laying

1200

Hatch and Development

200

First Generation Egg Laying

150

Under

0

 

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 38° 52° 23 13 3 0 0
02-16 27° 39° 34 14 3 0 0
02-17 12° 26° 34 14 3 0 0
02-18 22° 48° 47 17 3 0 0
02-19 27° 56° 67 27 3 0 0
02-20 34° 64° 94 44 10 0 0
02-21 41° 71° 128 68 24 6 1
02-22 46° 66° 162 92 38 12 2
02-23 35° 62° 188 108 45 12 2
02-24 29° 50° 206 116 45 12 2
02-25 39° 72° 239 139 58 18 3
02-26 40° 79° 277 167 76 27 7
2024Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-27 38° 79° 313 193 92 36 11
02-28 20° 34° 318 193 92 36 11
02-29 22° 54° 334 199 92 36 11
03-01 34° 49° 353 208 92 36 11
03-02 34° 69° 382 228 102 37 11
03-03 54° 82° 428 264 128 55 23
03-04 57° 78° 474 299 153 73 36
03-05 44° 59° 504 319 163 74 36
03-06 37° 61° 530 336 170 74 36
03-07 41° 53° 555 351 175 74 36
03-08 39° 53° 580 365 179 74 36
03-09 31° 50° 598 374 179 74 36
2024Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-10 30° 56° 619 384 180 74 36
03-11 38° 68° 650 405 191 77 36
03-12 46° 75° 688 434 209 88 41
03-13 50° 75° 729 465 230 101 49
03-14 54° 73° 771 496 251 114 58
03-15 46° 61° 802 517 262 117 58
03-16 42° 65° 833 538 274 120 58
03-17 32° 48° 851 547 274 120 58
03-18 27° 35° 861 547 274 120 58
03-19 29° 66° 886 562 279 120 58
03-20 38° 55° 911 577 284 120 58
03-21 33° 58° 935 591 288 120 58
2024Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-22 38° 62° 963 609 296 120 58
03-23 34° 49° 982 618 296 120 58
03-24 41° 66° 1013 639 307 124 58
03-25 49° 60° 1046 662 320 129 58
03-26 34° 50° 1066 672 320 129 58
03-27 29° 49° 1083 679 320 129 58
03-28 33° 66° 1110 697 327 129 58
03-29 43° 73° 1147 723 343 137 61
03-30 53° 72° 1187 753 364 149 68
03-31 49° 74° 1227 783 384 161 75
04-01 58° 75° 1271 817 408 177 86
04-02 41° 57° 1298 834 415 177 86
2024Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-03 36° 62° 1325 851 422 177 86
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-15 35° 51° 21 11 1 0 0
02-16 29° 36° 32 12 1 0 0
02-17 17° 39° 38 12 1 0 0
02-18 32° 55° 59 23 2 0 0
02-19 37° 59° 85 39 8 0 0
02-20 34° 61° 111 55 14 0 0
02-21 35° 57° 135 69 18 0 0
02-22 54° 61° 171 95 34 8 3
02-23 26° 51° 187 101 34 8 3
02-24 19° 38° 193 101 34 8 3
02-25 32° 47° 210 108 34 8 3
02-26 37° 55° 235 122 38 8 3
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-27 47° 62° 267 145 50 12 3
02-28 33° 61° 292 160 55 12 3
02-29 n/a n/a n/a n/a n/a n/a n/a
03-01 39° 60° 319 177 63 12 3
03-02 31° 50° 338 186 63 12 3
03-03 36° 46° 357 195 63 12 3
03-04 33° 58° 381 209 66 12 3
03-05 37° 68° 411 229 77 15 3
03-06 42° 68° 445 253 90 20 3
03-07 38° 49° 466 264 92 20 3
03-08 39° 43° 485 273 92 20 3
03-09 39° 43° 504 282 92 20 3
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-10 33° 41° 519 287 92 20 3
03-11 32° 39° 533 291 92 20 3
03-12 32° 46° 550 298 92 20 3
03-13 28° 32° 559 298 92 20 3
03-14 29° 43° 573 302 92 20 3
03-15 32° 61° 597 317 96 20 3
03-16 37° 59° 623 332 102 20 3
03-17 27° 40° 634 334 102 20 3
03-18 18° 31° 637 334 102 20 3
03-19 16° 40° 643 334 102 20 3
03-20 28° 61° 665 346 104 20 3
03-21 42° 49° 689 360 108 20 3
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-22 42° 70° 723 384 122 26 4
03-23 42° 62° 753 404 132 28 4
03-24 40° 45° 773 414 132 28 4
03-25 38° 60° 800 431 139 28 4
03-26 39° 58° 827 448 146 28 4
03-27 36° 54° 850 461 149 28 4
03-28 37° 48° 870 471 149 28 4
03-29 31° 59° 894 485 152 28 4
03-30 40° 70° 927 508 166 33 4
03-31 55° 76° 970 541 189 49 15
04-01 37° 56° 995 556 194 49 15
04-02 37° 76° 1029 580 208 55 16
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-03 50° 80° 1072 613 231 70 26
04-04 59° 87° 1123 654 262 94 45
04-05 41° 76° 1160 681 279 102 48
04-06 34° 54° 1182 693 281 102 48
04-07 34° 64° 1209 710 288 102 48
04-08 41° 68° 1242 733 300 107 48
04-09 43° 71° 1276 757 315 113 50
04-10 47° 72° 1314 785 333 123 55
04-11 51° 78° 1356 817 355 137 64
04-12 54° 78° 1400 851 379 153 75
04-13 50° 80° 1443 884 402 169 85
04-14 54° 82° 1489 920 428 187 98
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-15 47° 74° 1528 949 447 197 104
04-16 41° 47° 1550 961 449 197 104
04-17 39° 67° 1581 982 460 200 104
04-18 45° 77° 1620 1011 479 211 109
04-19 61° 81° 1669 1050 508 232 126
04-20 53° 79° 1713 1084 532 248 137
04-21 41° 65° 1744 1105 543 251 137
04-22 37° 47° 1764 1115 543 251 137
04-23 32° 54° 1785 1126 544 251 137
04-24 33° 65° 1812 1143 551 251 137
04-25 47° 67° 1847 1168 566 258 139
04-26 44° 66° 1880 1191 579 263 139
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-27 49° 67° 1916 1217 595 271 142
04-28 46° 69° 1952 1243 611 279 145
04-29 49° 69° 1989 1270 628 288 148
04-30 42° 57° 2016 1287 635 288 148
05-01 45° 63° 2049 1310 648 292 148
05-02 43° 65° 2081 1332 660 296 148
05-03 38° 70° 2113 1354 672 300 148
05-04 43° 75° 2150 1381 689 309 152
05-05 54° 74° 2192 1413 711 323 161
05-06 62° 85° 2243 1454 742 346 180
05-07 72° 92° 2303 1504 782 378 206
05-08 61° 83° 2353 1544 812 400 223
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-09 58° 78° 2399 1580 838 418 236
05-10 64° 84° 2451 1622 870 442 255
05-11 63° 75° 2498 1659 897 461 269
05-12 65° 84° 2550 1701 929 486 289
05-13 69° 87° 2607 1748 966 514 312
05-14 67° 86° 2661 1792 1000 541 334
05-15 60° 68° 2703 1824 1022 555 343
05-16 58° 68° 2744 1855 1043 567 350
05-17 56° 80° 2790 1891 1069 585 363
05-18 59° 81° 2838 1929 1097 605 378
05-19 57° 68° 2878 1959 1117 617 385
05-20 46° 71° 2914 1985 1133 626 389
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-21 48° 76° 2954 2015 1153 638 396
05-22 54° 75° 2997 2048 1176 652 406
05-23 54° 81° 3043 2084 1202 670 418
05-24 62° 82° 3093 2124 1232 692 435
05-25 59° 82° 3141 2162 1260 712 451
05-26 52° 77° 3183 2194 1282 727 460
05-27 49° 80° 3226 2227 1305 741 469
05-28 53° 82° 3271 2262 1330 759 482
05-29 58° 85° 3321 2302 1360 780 498
05-30 60° 88° 3373 2344 1392 804 517
05-31 64° 85° 3425 2386 1424 829 537
06-01 65° 89° 3480 2431 1459 856 559
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-02 65° 89° 3535 2476 1494 883 581
06-03 62° 91° 3590 2521 1529 910 603
06-04 64° 89° 3645 2566 1564 936 624
06-05 65° 87° 3699 2610 1598 962 645
06-06 55° 88° 3748 2649 1627 983 661
06-07 67° 83° 3801 2692 1660 1008 681
06-08 62° 77° 3848 2729 1687 1028 696
06-09 54° 83° 3895 2766 1714 1046 710
06-10 61° 86° 3947 2808 1746 1070 728
06-11 63° 68° 3990 2841 1769 1086 739
06-12 52° 73° 4031 2872 1790 1098 746
06-13 54° 80° 4076 2907 1815 1115 758
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-14 56° 86° 4125 2946 1844 1136 774
06-15 61° 89° 4178 2989 1877 1161 794
06-16 64° 87° 4231 3032 1910 1187 815
06-17 62° 88° 4284 3075 1943 1212 835
06-18 68° 76° 4334 3115 1973 1234 852
06-19 63° 88° 4387 3158 2006 1259 872
06-20 63° 88° 4441 3202 2040 1285 893
06-21 66° 85° 4495 3246 2074 1311 914
06-22 63° 88° 4549 3290 2108 1336 934
06-23 65° 92° 4606 3337 2145 1365 958
06-24 67° 95° 4665 3386 2184 1396 984
06-25 76° 89° 4725 3436 2224 1429 1012
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-26 66° 86° 4779 3480 2258 1455 1033
06-27 61° 88° 4832 3523 2291 1479 1052
06-28 69° 94° 4891 3572 2330 1511 1079
06-29 78° 96° 4956 3627 2375 1548 1111
06-30 71° 99° 5020 3681 2419 1583 1141
07-01 71° 88° 5077 3728 2456 1613 1166
07-02 68° 84° 5131 3772 2490 1638 1187
07-03 65° 90° 5186 3817 2525 1666 1209
07-04 68° 96° 5246 3867 2565 1698 1236
07-05 74° 88° 5305 3916 2604 1729 1262
07-06 66° 82° 5357 3958 2636 1753 1281
07-07 61° 85° 5408 3999 2667 1776 1299
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-08 66° 77° 5458 4039 2697 1797 1315
07-09 60° 85° 5508 4079 2727 1820 1333
07-10 60° 91° 5561 4122 2760 1845 1353
07-11 67° 94° 5620 4171 2799 1875 1378
07-12 72° 94° 5681 4222 2840 1908 1406
07-13 70° 90° 5739 4270 2878 1939 1432
07-14 69° 95° 5799 4320 2918 1971 1459
07-15 67° 89° 5855 4366 2954 1999 1482
07-16 67° 88° 5911 4412 2990 2026 1504
07-17 70° 89° 5968 4459 3027 2056 1529
07-18 68° 80° 6021 4502 3060 2080 1548
07-19 70° 90° 6079 4550 3098 2110 1573
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-20 75° 90° 6139 4600 3138 2143 1601
07-21 65° 80° 6190 4641 3169 2166 1619
07-22 62° 85° 6242 4683 3201 2189 1637
07-23 67° 92° 6299 4730 3238 2219 1662
07-24 69° 88° 6356 4777 3275 2247 1686
07-25 70° 93° 6416 4827 3315 2279 1712
07-26 80° 96° 6481 4882 3360 2317 1745
07-27 78° 100° 6548 4939 3407 2356 1779
07-28 77° 100° 6615 4996 3454 2394 1812
07-29 72° 94° 6676 5047 3495 2427 1840
07-30 68° 91° 6733 5094 3532 2457 1865
07-31 69° 78° 6785 5136 3564 2481 1884
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-01 72° 80° 6839 5180 3598 2507 1905
08-02 70° 83° 6894 5225 3633 2533 1926
08-03 73° 81° 6949 5270 3668 2560 1948
08-04 73° 81° 7004 5315 3703 2587 1971
08-05 71° 84° 7060 5361 3739 2615 1993
08-06 70° 85° 7115 5406 3774 2643 2016
08-07 67° 79° 7166 5447 3805 2666 2034
08-08 64° 83° 7218 5489 3837 2689 2052
08-09 69° 76° 7268 5529 3867 2712 2070
08-10 64° 84° 7321 5572 3900 2736 2089
08-11 69° 89° 7378 5619 3937 2765 2113
08-12 71° 87° 7435 5666 3974 2795 2138
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-13 69° 76° 7485 5706 4004 2817 2155
08-14 68° 76° 7535 5746 4034 2839 2172
08-15 62° 75° 7582 5783 4061 2857 2186
08-16 57° 79° 7628 5819 4087 2876 2199
08-17 64° 82° 7679 5860 4118 2899 2217
08-18 57° 81° 7726 5897 4145 2917 2230
08-19 65° 90° 7781 5942 4180 2945 2253
08-20 76° 95° 7845 5996 4224 2980 2283
08-21 78° 91° 7907 6048 4266 3015 2313
08-22 77° 95° 7971 6102 4310 3051 2344
08-23 77° 93° 8034 6155 4353 3086 2374
08-24 78° 96° 8099 6210 4398 3123 2406
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-25 78° 96° 8164 6265 4443 3160 2438
08-26 71° 83° 8219 6310 4478 3187 2460
08-27 65° 78° 8269 6350 4508 3208 2477
08-28 64° 82° 8320 6391 4539 3231 2494
08-29 62° 85° 8371 6432 4570 3255 2513
08-30 64° 80° 8421 6472 4600 3277 2530
08-31 55° 79° 8466 6507 4625 3294 2542
09-01 54° 82° 8512 6543 4651 3312 2555
09-02 58° 86° 8562 6583 4681 3334 2572
09-03 64° 91° 8617 6628 4716 3361 2594
09-04 72° 93° 8678 6679 4757 3393 2621
09-05 71° 87° 8735 6726 4794 3423 2646
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-06 62° 78° 8783 6764 4822 3443 2661
09-07 55° 79° 8828 6799 4847 3460 2673
09-08 59° 77° 8874 6835 4873 3477 2685
09-09 52° 78° 8917 6868 4896 3492 2695
09-10 55° 83° 8964 6905 4923 3511 2709
09-11 64° 74° 9011 6942 4950 3530 2724
09-12 59° 75° 9056 6977 4975 3548 2736
09-13 52° 78° 9099 7010 4998 3563 2746
09-14 58° 79° 9146 7047 5025 3581 2759
09-15 54° 80° 9191 7082 5050 3598 2771
09-16 58° 72° 9234 7115 5073 3613 2781
09-17 54° 76° 9277 7148 5096 3628 2791
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-18 49° 80° 9319 7180 5118 3643 2801
09-19 59° 87° 9370 7221 5149 3666 2819
09-20 61° 71° 9415 7256 5174 3682 2830
09-21 56° 83° 9462 7293 5201 3701 2845
09-22 64° 79° 9512 7333 5231 3723 2861
09-23 65° 83° 9564 7375 5263 3747 2880
09-24 63° 81° 9614 7415 5293 3769 2897
09-25 57° 86° 9663 7454 5322 3791 2914
09-26 56° 85° 9712 7493 5351 3812 2930
09-27 59° 82° 9760 7531 5379 3832 2945
09-28 60° 85° 9811 7572 5410 3855 2963
09-29 63° 91° 9866 7617 5445 3882 2985
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-30 64° 92° 9923 7664 5482 3910 3009

 

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!