HomeInternational Rice Research Notesvol. 22 no. 2 (1997)

Screening for Tolerance for Iron Toxicity

J O. Nipah | B Singh | O S. Kantanka | K L. Sahrawat

Discipline: Agriculture



This study identified the appropriate time to visually score rice germplasm in order to select materials having the lowest yield reduction under iron toxicity. The experiment took place at Korhogo, 9° 22' N 5° 31' W, in northern C te d'Ivoire, during the wet season (May-Aug 1995) using a randomized complete block design with three replications on an irrigated Ultisol lowland that contained 343 ppm Fe in soil solution at the beginning of the season. Of 28 transplanted, Suakoko 8 and Bouak 189 were tolerant and susceptible checks, respectively, and two O. glaberrima were land races. Each plot of 40 hills had a planted border using the check varieties. The experiment was repeated simultaneously on a nearby control field which was free of iron toxicity.