Published online by Cambridge University Press: 12 June 2017
The compound 3-amino-1, 2,4-triazole (ATA) is water soluble, heterocyclic and will react with most acids and bases to form salts. Several workers have reported that ATA is a promising herbicide for the control of a number of weed species. ATA was first noted to have defoliating and regrowth-inhibiting properties on cotton in tests conducted by workers of the Texas Agricultural Experiment Station in 1952. The compound was found to increase the effectiveness of many commercial defoliants while adding the property of regrowth inhibition. During 1954 and 1955, a number of tests were conducted with various salts and derivatives of ATA in the hope that they would be more effective at lower rates as cotton defoliants and regrowth inhibitors. The present paper compares the performance of ATA with eight of its salts or derivatives which were found to be the most successful in defoliating cotton and controlling regrowth after preliminary screening in the greenhouse.