Integrated Weed Management Strategies with Rye Mulch in Processing Vegetable Legumes
58th Annual Meeting of the Weed Science Society of America, Arlington, United States Of America, 29 January - 01 February 2018, pp.1, (Summary Text)
- Publication Type: Conference Paper / Summary Text
- City: Arlington
- Country: United States Of America
- Page Numbers: pp.1
- Akdeniz University Affiliated: Yes
Abstract
ABSTRACT
Vegetable legumes, including edamame, lima bean, and snap bean, constitute an important food group in human nutrition. One of the biggest obstacles of growing vegetable legumes is weed competition. Registered herbicides are limited, herbicide resistance is a growing concern, and hand weeding is effective but expensive. Therefore, further development of integrated weed management systems in vegetable legumes is needed. Field experiments were used to determine the effects of early-killed rye (EKR) and weed management on weed emergence and growth, hand weeding time, and crop yield in edamame, lima bean, and snap bean. Field experiments were conducted for each crop separately at the Vegetable Crop Research Farm near Urbana, IL in 2015, 2016 and 2017. Main plots consisted of EKR and stale seed bed (SSB) treatments within a split plot design. Cereal rye (Secale cereale) was sown at the rate of 162 kg ha-1 in September and killed by broadcast glyphosate application the following April. Vegetable legumes were no-till planted in late-May. Subplot treatments consisted of 1) standard PRE and POST herbicides (hereafter called ‘standard’), 2) standard treatment plus hand weeding (hereafter called ‘augmented’) and 3) a weedy control. Crops were machine harvested using the Oxbo BH100. At the time of rye burndown, cover crop biomass averaged 836 g m-2. The EKR treatment reduced crop emergence 9 to 38%, with edamame least affected by EKR. Standard herbicides reduced weed density throughout the growing season, whereas EKR had little effect on weed density. Nonetheless, EKR reduced at-harvest weed biomass 82% and 53% in snap bean and edamame, respectively. The EKR treatment decreased hand weeding time 12% in edamame. The EKR treatment reduced yield of lima bean and snap bean 51% and 62%, respectively. In contrast, EKR had no effect on edamame yield and increased marketable pod recovery 3%. While EKR shows little promise for use in lima bean and snap bean, EKR has high potential as an additional weed management tactic in edamame production.