RANBIR SINGH CHAUHAN, N. K. YADAV* AND RAVINDER CHAUHAN
Department of Plant Pathology, CCS Haryana Agricultural University, Hisar-125 004 (Haryana), India
*(e-mail : narendersbp78@gmail.com)
(Received : January 2, 2017; Accepted : March 20, 2017)
ABSTRACT
Out of the five fungitoxicants tested under in vitro conditions carbendazim at 25 ppm while propiconazole at 100 ppm completely inhibited the growth of Sarocladium oryzae. Neem gold completely inhibited the growth of the pathogen at 100 ppm a. i., while Achook arrested complete growth at 200 ppm. Propiconazole in combination with either of the two neem products i. e. Achook and Neem gold resulted in higher gain in yield q/ha (16.7 and 16.0, respectively) followed by combination of carbendazim with either of the neem products (14.6 and 13.9 q/ha, respectively). Combination of propicanozole with Achook or Neem gold reduced disease incidence by 54.3 and 52.6%, respectively. Among six nonconventional chemicals viz., zinc sulphate (0.1%), calcium chloride (0.1%), gibberellic acid (0.02%), salicylc acid (0.1%), benzoic acid (0.1%) and maleic acid (0.1%), zinc sulphate proved to be the most effective in reducing disease incidence and increasing grain yield.
Key words :Neem products, achook, neem gold, propiconazole, Sarocladium oryzae