This information, as well as the walnut acreage survey, will be used to estimate the state's walnut acres, according to a news release.
The survey was conducted by USDA's National Agricultural Statistics Service through a mail questionnaire of nurseries.
Operators were asked to report the number of trees sold by variety for commercial plantings and estimate the percentage of trees sold for new plantings.
Based on tree-spacing estimates, NASS projects that about 15,720 acres worth of trees were sold during the 2013 crop year.
Of those, 70.1 percent were Chandler, followed by Tulare with 9 percent and Howard with 5.8 percent.
The 2013 plantings were up substantially from the 11,310 acres worth of trees sold in 2012. Of those, Chandler once again was tops, according for 74.2 percent of all plantings.