Efficacy of combined formulations of fungicides with different modes of action in controlling botrytis gray mold disease in chickpea.
Botrytis gray mold (BGM) caused by Botrytis cinerea Pers. Ex. Fr. is an extremely devastating disease of chickpea (Cicer arietinum L.) and has a regional as well as an international perspective. Unfortunately, nonchemical methods for its control are weak and ineffective. In order to identify an effective control measure, six fungicides with different modes of action were evaluated on a BGM susceptible chickpea variety BARIchhola-1 at a high BGM incidence location (Madaripur) in Bangladesh for three years (2008, 2009, and 2010). Among the six fungicides tested, one was protectant [Vondozeb 42SC, a.i. mancozeb (0.2%)], two systemic [Bavistin 50 WP, a.i. carbendazim (0.2%), and Protaf 250EC, propiconazole (0.05%)], and three combination formulations [Acrobat MZ690, dimethomorph 9% + mancozeb 60%, (0.2%); Secure 600 WG, phenomadone + mancozeb (0.2%); and Companion, mancozeb 63% + carbendazim 12% (0.2%)]. The results showed superiority of combination formulations involving both protectant and systemic fungicides over the sole application of either fungicide separately. Among the combination fungicides, Companion was most effective, resulting in the lowest disease severity (3.33 score on 1-9 scale) and the highest increase (38%) of grain yield in chickpea. Therefore, this product could be preferred over the sole application of either solo protectant or systemic fungicides to reduce yield losses and avoid fungicide resistance.
RARS, Bangladesh Agricultural Research Institute, Rahmatpur, Barisal, Bangladesh.
M H
MH
Rashid
Pulses Research Centre, BARI, Gazipur, Bangladesh.
M Ashraf
MA
Hossain
Bangladesh Institute of Nuclear Agriculture, Mymensingh, Bangladesh.
M A
MA
Kashem
International Centre for Agricultural Research in the Dry Areas, Aleppo, Syria.
Shiv
S
Kumar
Institute of Tropical Agriculture, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia ; Department of Crop Science, Faculty of Agriculture, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia.
M Y
MY
Rafii
Department of Crop Science, Faculty of Agriculture, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia ; Plant Pathology Division, Bangladesh Rice Research Institute, Gazipur 1701, Bangladesh.
M A
MA
Latif
D020171:Botrytis / Q000187:drug effects / Q000472:pathogenicity*; D029863:Cicer / Q000382:microbiology*; D005659:Fungicides, Industrial / Q000494:pharmacology*; D010935:Plant Diseases / Q000382:microbiology* / Q000517:prevention & control
D005659:Fungicides, Industrial