Journal of Food, Agriculture and Environment

Vol 9, Issue 1,2011
Online ISSN: 1459-0263
Print ISSN: 1459-0255

Seed coating herbicide tolerant maize hybrids with imazapyr for Striga hermonthica (Del.) Benth control in the West African savanna


David Chikoye 1*, Lum Ayeoffe Fontem 2, 3, Abebe Menkir 3

Recieved Date: 2010-08-10, Accepted Date: 2011-01-19


Striga hermonthica is a serious threat to cereal production in the savannas of sub-Saharan Africa. Field trials were conducted in Nigeria at Abuja and Mokwa (southern Guinea savanna) in 2005 and 2006, and at Zaria (northern Guinea savanna) and Sabongari (Sudan savanna) in 2006, to evaluate the performance of imazapyr coated maize hybrids with the herbicide resistance (IR) gene under Striga infestation. Treatments were seven IR maize hybrids, and three checks without the IR gene (the commercial hybrid Oba Super 1, a Striga tolerant line 9022-13, and a Striga susceptible line 8338-1). The hybrids were either coated with imazapyr and sown under Striga infestation or uncoated and sown in Striga-free conditions. Across all locations, six of the IR maize hybrids were high-yielding under Striga infestation. Seed coating significantly reduced Strigaemergence and damage to the maize plants at all locations. The Striga susceptible hybrid check, 8338-1, had a high level of Striga damage and sustained a yield loss of 99% when uncoated and sown under Striga infested conditions. In Striga-free plots, the checks had yields comparable to that of the seven IR maize hybrids. Significant negative correlations were detected between grain yield and Striga damage ratings (rp = -0.64) at Abuja and Mokwa. The findings indicate that seed coating IR maize hybrids with imazapyr was effective for Striga hermonthica control.


Acetolactate synthase, imazapyr resistance, savanna, seed coating, Striga hermonthica control

Journal: Journal of Food, Agriculture and Environment
Year: 2011
Volume: 9
Issue: 1
Category: Agriculture
Pages: 416-421

Full text for Subscribers

Note to users

The requested document is freely available only to subscribers/registered users with an online subscription to the Journal of Food, Agriculture & Environment. If you have set up a personal subscription to this title please enter your user name and password. All abstracts are available for free.

Article purchasing

If you like to purchase this specific document such as article, review or this journal issue, contact us. Specify the title of the article or review, issue, number, volume and date of the publication. Software and compilation, Science & Technology, all rights reserved. Your use of this website details or service is governed by terms of use. Authors are invited to check from time to time news or information.

Purchase this Article:   20 Purchase PDF Order Reprints for 15

Share this article :