Sorghum growers in the middle part of the country know this ancient grain is where untapped potential can be in their crop rotation. And now with new technologies to help control the ever-present weeds or grasses, sorghum is able to get an even bigger foothold. HPJ Full Article Click Here
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| Grass Species | % Yield Reduction | Sources |
|---|---|---|
| Johnson Grass | 100% | Bean (1991) |
| Shattercane | 80-96% | Stahlman and Wicks (2000), Original Veseckt et al (1973) |
| Longpine Sandbur | 42% | Thompson, Dille, and Peterson (2017), Original Fabrizius (1998) |
| Yellow Foxtail | 44% | Stahlman and Wicks (2000), Original (Feltner et al (1969b)) |
| Barnyardgrass | 44% | Stahlman and Wicks (2000), Original (B.A. Smith(1990)) |
| Prairie Cupgrass | 42% | Stahlman and Wicks (2000), Original (Stahlman and Northam (1992)) |
| Texas and Brown Panicum | 80% | Garcia et al (2019) |
If planting in 20 inch rows or less always use the higher rates. Increase seeding rate by 20% if planting is delayed significantly to account for lower tillering rates.
| Yield Goal | Seed/acre | |
|---|---|---|
| <80 bu/acre | < 4,500 lbs/acre | 25-30,000 |
| 80-125 bu/acre | 4,000-5,600 lbs/acre | 40-55,000 |
| 125+ bu/acre | 7,000+ lbs/acre | 55-70,000 |
| Irrigated | Irrigated | 80-120,000 |
