Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Chemical control of swamp morning glory (Ipomoea aquatica Forsk) in drainage water bodies.

Abstract

In field trials conducted at Maruteru during 1988-89, the effects were evaluated of 2,4-D at 2.0 kg/ha, 2,4-D + urea at 2.0 kg + 2%, 2,4-D + paraquat at 4.0 + 1.0 kg, paraquat at 2.0 kg, paraquat + urea at 2.0 kg + 2%, and paraquat + 2,4-D at 4.0 + 1.0 kg for the control of I. aquatica in drainage canals. All herbicide treatments decreased weed biomass production 25 d after spraying from untreated control values of 6500 kg/ha to 800-5300 kg. All weed control treatments reduced weed growth by 18-99%, and reduced resprouting of I. aquatica from control values of 100% to 1.4-65.3%. Paraquat + 2,4-D at 4.0 + 1.0 kg resulted in the greatest decrease in weed growth and resprouting.