U.S. Markets open in 5 hrs 52 mins

SANW: Published stevia study shows enhanced sweetener yield for S&W Seed varietals.

By Ian Gilson, PhD, CFA


S&W Seed (SANW) has announced that the American Society of Horticulture Science published a study on glycoside (sweetener) productivity of stevia.

This study examined the effects of location (four places) harvest strategy and cultivar (type) on dry leaf yield, steviol glycoside (chemicals) concentration and yield. We have used the data in the publication to show the impact of each variety studied on the production of Rebaudioside A (Reb A) the most commercially important of the sweeteners in the stevia leaf. The results are shown in our report.

In most cases, although all sites were irrigated, the samples from the moist climate in Oregon contained higher levels of Reb A than samples grown in the arid conditions of the Palm desert in California or the Sonoran Desert in Arizona. However, certain varieties did better in arid conditions than in moist conditions.

With this data the farmer can select the best varietal for the local conditions. For example SW201 would be a good candidate for acidic loam soil as found in Indio and Yuma.

In all cases the production per acre of Reb A was enhanced by the breeding program of S&W Seed. Yield improvements by a factor of 300% of the control plant production are a strong incentive to the farmer to buy seed from S&W Seed.


 to receive our articles and reports emailed directly to you each morning. Please visit our website for additional information on Zacks SCR and to view our disclaimer.