Evaluation of Ammonium Sulfate Nitrate in Virginia Snap Bean Production
IPNI-2009-USA-VA22
The current N management regime recommended for Virginia snap bean production includes a total of 40 to 80 lbs. N/acre in two splits. For this study, we will apply ½ of the nitrogen rate pre-plant incorporated and the remaining ½ N rate approximately 2 weeks after emergence in banded treatments. Methodology Test Material: Sulf-N 26 (26-0-0-14S) Soil: Bojac sandy loam (65% sand, 25% silt, 10% clay; 0. 75% organic matter). Read more
Interpretive Summary
Fresh-market snap beans occupy 5,500 acres in Virginia. Producers are interested in exploring sources and rates to improve N use efficiency. This trial compared five N sources (urea with dicyandiamide, ammonium nitrate, calcium nitrate, ammonium sulfate-nitrate, and urea-ammonium nitrate) at three rates. In 2009, for spring-grown beans, urea with dicyandiamide increased yield by 25% over the control, while the other sources did not.
Fresh-market snap beans occupy 5,500 acres in Virginia. Producers are interested in exploring sources and rates to improve N use efficiency. This trial compared five N sources (urea with dicyandiamide, ammonium nitrate, calcium nitrate, ammonium sulfate-nitrate, and urea-ammonium nitrate) at three rates. In 2009, for spring-grown beans, urea with dicyandiamide increased yield by 25% over the control, while the other sources did not.
Updates & Reports
| 2009 | 2009 Annual Report |
| 2010 | Project Description |