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Crabgrass/Annual Bluegrass Preemergence Timer (GDD 32)
through Sat, Feb. 16. 2019

 

GDD Total: 14 (Base 32) through Sat, Feb. 16, 2019

  

Clarksville, IN

       

Forecast »

Done

801

Late

500

Optimum

250

Early

171

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 32° 55° 22 12 2 0 0
02-16 29° 40° 34 14 2 0 0
02-17 33° 44° 51 21 2 0 0
02-18 33° 40° 65 25 2 0 0
02-19 26° 43° 78 28 2 0 0
02-20 35° 52° 99 39 3 0 0
02-21 36° 49° 120 50 4 0 0
02-22 33° 52° 141 61 5 0 0
02-23 40° 58° 168 78 12 0 0
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-15 61° 71° 44 34 24 16 11
02-16 37° 69° 75 55 35 19 11
02-17 33° 40° 89 59 35 19 11
02-18 30° 50° 107 67 35 19 11
02-19 47° 75° 146 96 54 30 17
02-20 66° 78° 196 136 84 52 34
02-21 45° 71° 232 162 100 60 37
02-22 42° 49° 256 176 103 60 37
02-23 46° 66° 290 200 117 66 38
02-24 50° 60° 323 223 130 70 38
02-25 43° 62° 353 243 140 73 38
02-26 35° 57° 377 257 144 73 38
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-27 37° 63° 404 274 152 73 38
02-28 53° 59° 439 299 166 79 39
03-01 46° 60° 469 319 177 81 39
03-02 35° 50° 489 329 177 81 39
03-03 31° 52° 509 339 177 81 39
03-04 32° 53° 530 350 177 81 39
03-05 35° 49° 550 360 178 81 39
03-06 37° 58° 575 375 183 81 39
03-07 32° 40° 590 380 183 81 39
03-08 31° 36° 601 381 183 81 39
03-09 28° 46° 616 386 183 81 39
03-10 35° 49° 636 396 183 81 39
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-11 33° 48° 655 405 183 81 39
03-12 31° 43° 670 410 183 81 39
03-13 29° 43° 684 414 183 81 39
03-14 25° 42° 695 415 183 81 39
03-15 35° 62° 722 432 190 81 39
03-16 33° 50° 741 441 190 81 39
03-17 40° 57° 768 458 196 81 39
03-18 36° 60° 794 474 202 81 39
03-19 39° 59° 821 491 209 81 39
03-20 32° 50° 840 500 209 81 39
03-21 31° 38° 852 502 209 81 39
03-22 26° 47° 867 507 209 81 39
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-23 32° 53° 887 517 210 81 39
03-24 35° 46° 906 526 210 81 39
03-25 34° 49° 926 536 210 81 39
03-26 42° 61° 955 555 219 83 39
03-27 51° 64° 991 581 234 90 41
03-28 56° 60° 1027 607 250 98 44
03-29 49° 63° 1061 631 264 104 45
03-30 44° 54° 1088 648 271 104 45
03-31 36° 63° 1116 666 279 104 45
04-01 37° 52° 1138 678 282 104 45
04-02 35° 49° 1158 688 282 104 45
04-03 49° 76° 1199 719 303 117 53
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-04 35° 54° 1221 731 305 117 53
04-05 29° 53° 1241 741 305 117 53
04-06 38° 63° 1269 759 313 117 53
04-07 29° 44° 1284 764 313 117 53
04-08 29° 45° 1299 769 313 117 53
04-09 34° 49° 1318 778 313 117 53
04-10 36° 47° 1338 788 313 117 53
04-11 32° 65° 1364 804 320 117 53
04-12 57° 80° 1411 841 346 136 67
04-13 65° 80° 1461 881 377 159 84
04-14 62° 73° 1507 917 402 176 97
04-15 44° 61° 1537 937 413 179 97
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-16 34° 43° 1553 943 413 179 97
04-17 32° 58° 1576 956 416 179 97
04-18 40° 77° 1613 983 432 187 100
04-19 38° 54° 1637 997 436 187 100
04-20 36° 62° 1664 1014 443 187 100
04-21 43° 68° 1698 1038 457 193 101
04-22 51° 73° 1737 1067 477 205 107
04-23 52° 62° 1773 1093 492 212 110
04-24 53° 58° 1806 1116 506 217 110
04-25 55° 67° 1845 1145 525 228 116
04-26 48° 69° 1882 1172 541 237 120
04-27 45° 72° 1918 1198 558 245 123
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-28 50° 61° 1952 1222 571 251 124
04-29 36° 63° 1979 1239 579 251 124
04-30 38° 75° 2014 1264 593 257 125
05-01 48° 83° 2057 1297 617 273 135
05-02 65° 86° 2111 1341 650 298 156
05-03 71° 78° 2163 1383 683 323 175
05-04 70° 80° 2216 1426 716 348 195
05-05 62° 69° 2260 1460 739 363 206
05-06 58° 80° 2306 1496 766 382 220
05-07 55° 74° 2349 1529 788 396 229
05-08 52° 78° 2392 1562 811 411 239
05-09 55° 83° 2439 1599 838 430 253
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-10 67° 85° 2493 1643 872 456 274
05-11 66° 87° 2547 1687 907 483 295
05-12 71° 87° 2604 1734 944 512 320
05-13 69° 88° 2661 1781 980 540 343
05-14 70° 91° 2719 1829 1018 570 368
05-15 73° 89° 2778 1878 1057 601 394
05-16 69° 78° 2829 1919 1089 625 413
05-17 65° 79° 2879 1959 1119 647 430
05-18 68° 75° 2929 1999 1148 668 446
05-19 68° 79° 2981 2041 1180 692 465
05-20 66° 88° 3036 2086 1215 719 487
05-21 68° 87° 3091 2131 1251 747 510
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-22 69° 83° 3146 2176 1285 773 531
05-23 66° 83° 3198 2218 1318 798 551
05-24 62° 84° 3250 2260 1349 821 569
05-25 61° 88° 3302 2302 1382 846 588
05-26 71° 86° 3359 2349 1418 874 612
05-27 70° 86° 3415 2395 1454 902 635
05-28 69° 90° 3472 2442 1492 932 659
05-29 71° 87° 3529 2489 1529 961 683
05-30 75° 81° 3585 2535 1565 988 706
05-31 69° 82° 3638 2578 1598 1014 727
06-01 66° 84° 3691 2621 1631 1039 747
06-02 69° 87° 3748 2668 1667 1067 770
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-03 68° 81° 3800 2710 1700 1092 789
06-04 59° 77° 3846 2746 1726 1110 803
06-05 58° 83° 3895 2785 1754 1130 818
06-06 63° 80° 3945 2825 1784 1152 835
06-07 63° 86° 3997 2867 1817 1177 855
06-08 72° 88° 4056 2916 1855 1207 880
06-09 69° 90° 4113 2963 1893 1237 905
06-10 68° 84° 4167 3007 1927 1263 925
06-11 67° 73° 4215 3045 1955 1283 941
06-12 69° 85° 4270 3090 1990 1310 962
06-13 70° 84° 4325 3135 2025 1337 984
06-14 67° 86° 4379 3179 2059 1363 1006
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-15 66° 89° 4435 3225 2095 1391 1029
06-16 72° 92° 4496 3276 2135 1423 1056
06-17 74° 93° 4557 3327 2177 1457 1084
06-18 76° 92° 4620 3380 2219 1491 1114
06-19 77° 91° 4682 3432 2261 1525 1143
06-20 75° 85° 4740 3480 2300 1556 1168
06-21 73° 79° 4794 3524 2334 1582 1189
06-22 68° 77° 4844 3564 2364 1604 1207
06-23 68° 80° 4896 3606 2396 1628 1226
06-24 71° 85° 4953 3653 2432 1656 1249
06-25 70° 76° 5004 3694 2463 1679 1267
06-26 72° 83° 5059 3739 2499 1706 1289
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-27 70° 84° 5114 3784 2533 1733 1311
06-28 72° 88° 5172 3832 2571 1763 1336
06-29 74° 90° 5231 3881 2611 1795 1363
06-30 73° 91° 5292 3932 2651 1827 1390
07-01 77° 91° 5354 3984 2693 1861 1419
07-02 76° 90° 5415 4035 2735 1894 1447
07-03 74° 88° 5474 4084 2774 1925 1473
07-04 75° 94° 5536 4136 2816 1960 1503
07-05 78° 94° 5601 4191 2860 1996 1534
07-06 75° 85° 5658 4238 2898 2026 1558
07-07 62° 83° 5709 4279 2928 2048 1576
07-08 67° 89° 5765 4325 2964 2076 1599
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-09 72° 89° 5823 4373 3003 2107 1624
07-10 75° 91° 5884 4424 3044 2140 1653
07-11 75° 89° 5945 4475 3084 2172 1680
07-12 67° 87° 5999 4519 3119 2199 1702
07-13 65° 91° 6056 4566 3155 2227 1725
07-14 71° 93° 6116 4616 3195 2259 1752
07-15 74° 82° 6172 4662 3231 2287 1775
07-16 72° 86° 6229 4709 3268 2316 1799
07-17 74° 88° 6288 4758 3307 2347 1825
07-18 66° 85° 6341 4801 3341 2372 1845
07-19 66° 88° 6396 4846 3375 2399 1867
07-20 71° 84° 6452 4892 3411 2427 1890
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-21 65° 80° 6502 4932 3441 2449 1907
07-22 69° 81° 6555 4975 3474 2474 1927
07-23 64° 79° 6604 5014 3504 2496 1944
07-24 67° 84° 6658 5058 3538 2521 1964
07-25 68° 87° 6714 5104 3573 2549 1987
07-26 69° 87° 6770 5150 3609 2577 2010
07-27 68° 82° 6823 5193 3642 2602 2030
07-28 63° 81° 6873 5233 3672 2624 2047
07-29 63° 83° 6924 5274 3703 2647 2065
07-30 69° 82° 6977 5317 3737 2672 2085
07-31 69° 79° 7029 5359 3768 2696 2104
08-01 68° 79° 7080 5400 3800 2720 2122
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-02 67° 83° 7133 5443 3833 2745 2142
08-03 67° 87° 7188 5488 3868 2772 2164
08-04 72° 89° 7247 5537 3906 2802 2190
08-05 71° 91° 7306 5586 3945 2833 2216
08-06 72° 90° 7364 5634 3984 2864 2242
08-07 75° 87° 7424 5684 4023 2895 2268
08-08 73° 85° 7481 5731 4060 2924 2292
08-09 73° 85° 7538 5778 4097 2953 2316
08-10 70° 85° 7593 5823 4133 2981 2339
08-11 72° 88° 7651 5871 4171 3011 2363
08-12 69° 86° 7707 5917 4206 3038 2386
08-13 66° 86° 7761 5961 4240 3064 2407
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-14 68° 88° 7816 6006 4276 3092 2430
08-15 70° 80° 7869 6049 4309 3117 2450
08-16 69° 84° 7924 6094 4343 3143 2471
08-17 76° 85° 7982 6142 4382 3173 2496
08-18 73° 83° 8038 6188 4418 3202 2519
08-19 69° 87° 8094 6234 4454 3230 2542
08-20 73° 85° 8151 6281 4490 3258 2566
08-21 71° 80° 8205 6325 4524 3284 2587
08-22 66° 78° 8254 6364 4554 3306 2604
08-23 58° 79° 8301 6401 4580 3324 2617
08-24 60° 76° 8347 6437 4607 3342 2630
08-25 71° 86° 8404 6484 4643 3371 2654
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-26 75° 88° 8463 6533 4683 3403 2681
08-27 76° 89° 8524 6584 4723 3435 2708
08-28 76° 91° 8585 6635 4765 3469 2737
08-29 76° 89° 8646 6686 4805 3501 2764
08-30 72° 85° 8702 6732 4842 3530 2788
08-31 70° 87° 8759 6779 4879 3558 2811
09-01 71° 86° 8816 6826 4915 3587 2835
09-02 71° 90° 8874 6874 4954 3618 2860
09-03 73° 91° 8934 6924 4994 3650 2888
09-04 75° 92° 8996 6976 5035 3683 2916
09-05 74° 89° 9055 7025 5075 3715 2943
09-06 76° 85° 9114 7074 5113 3745 2968
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-07 73° 85° 9170 7120 5150 3774 2992
09-08 66° 76° 9219 7159 5179 3795 3008
09-09 62° 65° 9260 7190 5200 3808 3016
09-10 59° 66° 9301 7221 5221 3821 3024
09-11 58° 72° 9344 7254 5244 3836 3033
09-12 62° 77° 9392 7292 5271 3855 3048
09-13 64° 86° 9445 7335 5305 3880 3068
09-14 68° 89° 9501 7381 5341 3909 3092
09-15 70° 90° 9559 7429 5379 3939 3117
09-16 72° 83° 9615 7475 5414 3966 3139
09-17 72° 83° 9670 7520 5450 3993 3161
09-18 70° 91° 9728 7568 5488 4024 3187
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-19 71° 91° 9787 7617 5527 4055 3212
09-20 73° 92° 9848 7668 5568 4088 3240
09-21 74° 89° 9908 7718 5607 4119 3267
09-22 61° 75° 9954 7754 5633 4137 3280
09-23 60° 67° 9996 7786 5655 4151 3289
09-24 65° 73° 10000 7823 5682 4170 3303
09-25 71° 81° 10000 7866 5716 4196 3324
09-26 61° 74° 10000 7902 5741 4213 3336
09-27 55° 63° 10000 7929 5759 4222 3340
09-28 52° 71° 10000 7958 5778 4234 3347
09-29 54° 75° 10000 7991 5801 4249 3356
09-30 56° 80° 10000 8027 5827 4267 3369
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.