These are steps UC IPM says growers should follow to estimate the plant population:
- Take at least four measurements from several representative areas of the field and average them.
- Use the table below to find the length of row that represents 1/1000th of an acre for various row widths.
- In your field, count the total number of plants in the 1/1000th acre area and multiply by 1,000.
|Valley cotton stands are generally falling in the optimal range.|
The best density rate also can depend on the variety and conditions. Higher densities may be better for plants growing in “low vigor situations.”
For weak stands, growers need to look for any seedling diseases or insects that could be causing the problem. Replanting should be considered for poor stands, including those with many adjacent rows without plants.
|Pests can be one cause for poor stand development.|
Right now, Carlos says most of his scouted fields fall in the optimal range. The plant populations fall within the 30,000 to 40,000 PPA range. “They’re in the ballpark.”
We’re sure growers are looking for a home run yield by fall.