Planting Conditions for April 25, 2017

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Keith Edmisten, Professor of Crop Science and Extension Cotton Specialist

Guy Collins, Extension Associate Professor – Cotton

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
36-49 Very good
50 Excellent
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 62.8 degrees at 8 this morning (April 17). That is below what we would like to see for planting cotton. The temperature increased to 68.3 by 11:00 a.m. This is a good sign as soil temperature did not increase much during the same time period for the last few days.

The DD60s predicted for the 5 days following planting at Rocky Mount are included in the table below. We have good to excellent planting conditions for the next 5 days if this weather forecast holds up.

Planting date Daily DD60s DD60s for next 5 days Low temp Planting condition
April 25 7.5 47.5 57 Very good
26 10 50 61 excellent
27 10 49.5 65 Very good
28 10 46 68 Very good
29 10 44 69 Very good
30 10 42 69 Very good
May 1 9.5 38 57 Very good
2 6.5 34.5 56 Good
3 8 34.5 58 Good
4 8 34 57 Good
5 6   56  
6 6   55  
7 6.5   56  
8 7.5   57  

*DD60’s are capped at 10 for any one day.