Jarrod O. Miller, Extension Agronomist, jarrod@udel.edu
Steady warm weather and periodic rainfalls have moved corn along pretty well. Most corn planted here in Georgetown in late April is at V6-7 and has been sidedressed. Fields planted through mid-May are at V5/V6, matching the predicted GDD pretty well.
The next milestone to watch for would be tasseling (VT), which occurs at 1135 GDD. At this stage just consider how weather may determine pollination and later grain fill as another determinant of final yield.
Table 1: Accumulated growing degree-days based on planting dates through May 20th.
|
If you planted ↓ |
Sussex | Kent | New Castle |
| Apr 14 | 805 | 760 | 723 |
| Apr 21 | 713 | 669 | 636 |
| Apr 28 | 632 | 593 | 556 |
| May 5 | 532 | 512 | 484 |
| May 12 | 431 | 414 | 393 |
| May 19 | 361 | 350 | 333 |
V6 = 475 GDD, V12 = 870 GDD, VT = 1135 GDD, R1 = 1400 GDD
Statewide Temperatures Since April 1st
Statewide Rainfall Accumulation Since April 1st
