Central Valley Bean Cooperative
Planter Plates, Determining Plant Populations and Replanting
The proper plant population is needed to get your dry bean cop off to a good start. To plant the population desired you need to have the correct plates or drum for your planter. We recommend contacting your local implement dealer to obtain the proper dry bean planter plates or drum for the class of beans you intend to plant
DETERMINING YOUR PLANT POPULATION
To estimate your plant population, use the following method.
1). Based on your row width, count the number of plants in 1/1000 of an acre. Use the chart below to determine the length of row in 1/1000 of an acre.
Row width Row length in 1/1000 acre
6 inches 87.1 feet
12 inches 43.6 feet
22 inches 23.8 feet
30 inches 17.4 feet
36 inches 14.5 feet
2). The more random samples you can take from a field the greater accuracy you will have in estimating your plant population. It's recommended that fields that are 10 to 40 acres in size have a minimum of 4 counts taken. For each additional 40 acres a minimum of 1 count should be taken.
3). Count the plants in the determined length of row, average the counts and multiply your estimated plant population per acre.
Replanting is seldom advisable. If your stand has been reduced, the remaining dry beans should be able to compensate for the lost plates. When stands have been reduced to the 50% range or greater your agronomist should be called for a second opinion.