RALEIGH — We have made a few changes to the chart below to better define planting conditions. In addition, we cap DD60’s at a maximum value of 10 for each day. If you are computing DD60 accumulation on your own and a day is predicted to have 15 DD60’s, only use 10 for that day.
|Relationship Between Predicted DD-60s and Planting Conditions.|
|Predicted DD-60 accumulation for five days following planting||Planting conditions
|10 or fewer||Very poor|
|11 to 15||Marginal|
|16 to 25||Adequate|
|26 to 35||Good|
|Avoid planting cotton if the low temperature is predicted to be below 50°F for either of the two nights following planting or predicted daily DD60’s is near zero for the day of planting.|
Soil temperature at a 3 inch depth was 70.9 degrees at 8 this morning (April 30) at Rocky Mount.
The DD60s predicted for the 5 days following planting at Rocky Mount are included in the table below. We have a cool spell coming in late in the week for a couple days with low temperatures predicted to be in the low 50’s. Take care to use seed with good cool germ and avoid planting too deeply if you plant during this period. Temperatures are predicted to start rising back to good planting weather on May 9.
|Planting date||Daily DD60s||DD60s for next 5 days||Low temp||Planting condition|
|May 1||10||41||62||Very good|
*DD60’s are capped at 10 for any one day.
— Keith Edmisten, Professor of Crop Science and Extension Cotton Specialist and Guy Collins, Extension Associate Professor – Cotton, NC State University
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