Control of volunteer adzuki bean (Vigna angularis) with pre- and postemergence herbicides in corn (Zea mays)

Abstract

. 2010. Control of volunteer adzuki bean (Vigna angularis) with pre-and postemergence herbicides in corn (Zea mays). Can. J. Plant Sci. 90: 925Á932. Volunteer adzuki bean within a corn crop can decrease corn yield and increase the adzuki bean seed bank. The objective of this research was to evaluate the efficacy of various preemergence (PRE) and postemergence (POST) herbicides for the control of volunteer adzuki bean [Vigna angularis (Willd.) Ohwi & Ohashi] in corn. Trials were conducted at two locations in 2005, 2006, 2007 and 2009. Experiments were arranged in a randomized complete block design with either seven PRE or ten POST herbicides. Volunteer adzuki bean interference resulted in corn yield losses of 16 to 43%. The PRE herbicides provided variable control. The highest and most consistent control PRE was provided by dicamba/atrazine, which provided 69 to 97% control of volunteer adzuki bean at 4 and 8 wk after emergence (WAE), respectively. Dicamba/atrazine PRE reduced volunteer adzuki bean density and biomass 67 to 97% 10 WAE. Generally, the POST herbicides evaluated provided better and more consistent control of volunteer adzuki bean than the PRE herbicides. Dicamba/atrazine applied POST provided greater than 95% control of volunteer adzuki bean and consistently reduced volunteer adzuki bean density and biomass to the equivalent of the weed-free control. Dicamba/atrazine applied POST resulted in corn yields equivalent to the weed-free control. The best option for controlling volunteer adzuki bean in corn is to apply dicamba/atrazine POST, while the remaining herbicides evaluated provided variable control.Key words: Biomass, density, emergence, dry weight, yield Kramer, C., Soltani, N., Swanton, C. J., Robinson, D. E. and Sikkema, P. H. 2010. Lutte contre la repousse spontane´e du haricot adzuki (Vigna angularis) avec des herbicides pre´leve´e et post-leve´e dans les champs de maı¨s (Zea mays). Can. J. Plant Sci. 90: 925Á932. La repousse spontane´e du haricot adzuki dans les cultures peut re´duire le rendement du maı¨s tout en grossissant le re´servoir de semences du haricot. Les auteurs voulaient e´valuer l'efficacite´de divers herbicides pre´leve´e et post-leve´e dans la lutte contre les repousses spontane´es de haricot adzuki [Vigna angularis (Willd.) Ohwi & Ohashi], dans les champs de maı¨s. Les essais se sont de´roule´s à deux endroits en 2005, 2006, 2007 et 2009. Les expe´riences ont e´teá gence´es en blocs ale´atoires complets avec sept herbicides pre´leve´e ou dix post-leve´e. La repousse spontane´e du haricot adzuki re´duit le rendement du maı¨s de 16 a`43 %. Les herbicides pre´leve´e donnent des re´sultats variables dans la lutte contre cette adventice. Les meilleurs re´sultats, e´galement les plus constants, viennent de l'utilisation du dicamba/atrazine, qui de´truit de 69 a`97 % des repousses spontane´es, 4 et 8 semaines apre`s la leve´e, respectivement. L'application de dicamba/atrazine avant la leve´e diminue la densite´des repousses spontane´es de haricot adzuki et leur biomasse de 67 a9...

Changes in Microstructure, Germination, Sprout Growth, Phytochemical and Microbial Quality of Ultrasonication Treated Adzuki Bean Seeds

“…Adzuki bean seeds are also consumed as sprouts because of their soft and crispy texture and attractive fragrance. However, the seed coat of the adzuki bean is hard when compared to other legumes [4]. This hard seed coat characteristic is linked to the polyphenols and suberin compounds accumulated in the palisade layer of seed coat, which reduces water permeability [5].…”

Weed management in adzuki bean: a review

“…ha −1 ) provided up to 95% volunteer adzuki bean control, as low as 38% and 3% control was observed at 8 WAA, respectively, indicating a high degree of variability. Kramer et al (2010) also found that dicamba and (or) atrazine (1800 g a.i. ha −1 ) applied POST provided consistently excellent (≥95%) control of volunteer adzuki bean at 4 and 8 WAA.…”

“…Adzuki bean seed shatter losses from natural causes and during harvest operations have the potential to form a persistent seedbank in the soil. In corn production, volunteer adzuki bean can reduce yield by up to 43% (Kramer et al 2010). Volunteer populations are particularly disadvantageous for soybean growers as adzuki bean seeds vary only slightly in size and are thus difficult to remove from the harvested product (Duke 2012;Kramer et al 2012).…”

“…Utilising a corn crop to introduce diversity in herbicide mode-of-action can be used to selectively target volunteer adzuki bean weeds. Kramer et al (2010) assessed volunteer adzuki bean control in corn and found that, in general, POST application provided better and more consistent control than PRE timing. Of the PRE treatments evaluated, dicamba and (or) atrazine (1800 g a.i.…”

The Changes in GABA, GAD and DAO Activities, and Microbial Safety of Soaking- and High Voltage Electric Field-Treated Adzuki Bean Sprouts

“…In this study, similar seed hydration patterns were also found in the control seeds (Figure 4). The observed slow initial water uptake was possibly related to the hard seed coat characteristic of the adzuki bean seeds [38]. Once the seed coat is hydrated to some extent (e.g., soaking the seeds in running water for 16 h), its resistance to the water flow may decrease, then the water uptake rate may progressively increase [37].…”