Open AccessEfficacy of various pesticides against Red ant (Dorylus orientalis, Westwood) of potato
Author(s) -
Nabadeep Saikia,
Kapil Deb Nath
Publication year - 2017
Publication title -
journal of applied and natural science
Language(s) - English
Resource type - Journals
eISSN - 2231-5209
pISSN - 0974-9411
DOI - 10.31018/jans.v9i4.1536
Subject(s) - infestation , malathion , hectare , toxicology , pesticide , biology , agronomy , ecology , agriculture
Several management approaches against red ant of potato Dorylus orientalis (Westwood) were studied at farmer’s field in Cachar district of Assam (India) during 2015-16 cropping season to find out the most effective man-agement technique. Combination of Malathion 5% dust @ 40 kg per hectare and Mustard Oil Cake (MOC) @ 150 kg per hectare reduced red ant damage significantly (p ≤ 0.05) followed by Dursben 20% EC @ 5 ml per litre and Car-bofuran 3G @ 25 kg per hectare. Malathion and MOC was applied at the time of first earthing up gave the lowest infestation of red ant (9.2%) and with (64.31%) infestation reduction over control closely followed by Dursban 20% EC (13.5%) and with (59.32%) infestation reduction over control. Highest infestation (47.6%) was recorded in the control untreated plot where; only chemical fertilizers were applied at recommended dose.