HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Web of Science (1) Citing Articles via Google Scholar Google Scholar Articles by Tripathi, S. C. Articles by Kaul, J. N. Search for Related Content PubMed Articles by Tripathi, S. C. Articles by Kaul, J. N. Agricola Articles by Tripathi, S. C. Articles by Kaul, J. N. Related Collections Crop Growth and Development Wheat Data Management

CROP ECOLOGY, MANAGEMENT & QUALITY

Planting Systems on Lodging Behavior, Yield Components, and Yield of Irrigated Spring Bread Wheat

^a Directorate of Wheat Research (DWR), Agronomy, PB No. 158, Karnal, Haryana, India
^b Centro Internacional de Mejoramiento de Maíz y Trigo (CIMMYT), Apdo. #370, P.O. Box 60326, Houston, TX 77205
^c Punjab Agricultural Univ., Dep. of Agronomy, Ludhiana, India

^* Corresponding author (k.sayre{at}cgiar.org)

Lodging control of irrigated spring wheat (Triticum aestivum L.) through both crop management practices and cultivar improvement is needed to increase yield and grain quality in farmer fields, especially in developing countries where wheat production under irrigation predominates. The objectives of this research were to: (i) determine how different planting systems combined with cultivar choice can alter lodging incidence; (ii) provide a better understanding of planting system x genotype interactions to identify improved management alternatives for farmers facing chronic wheat crop lodging; and (iii) assess potential lodging consequences that may be associated with the translocation containing the Lr19 gene which has been shown to contribute to increased grain yield potential. Lodging behavior and yield potential were studied for 16 spring wheat genotypes under disease free, irrigated conditions at the CIMMYT (Centro Internacional de Mejoramiento de Maíz y Trigo) experiment station near Ciudad Obregon, Sonora, Mexico, during the 1997–1998 and 1998–1999 crop cycles. Among the genotypes tested were SUPER SERI, which carries the Lr19 gene, and Seri 82, which is a near isogenic cultivar lacking the gene. Comparisons were made between the widely used, flat planting system with flood irrigation versus an innovative bed planting system with furrow irrigation that has been widely adopted by many farmers in northwest Mexico. An additional treatment using support nets to eliminate lodging for the flat planting system was included to estimate yield losses attributable to lodging. There were yield differences among planting systems and genotypes and their interactions were significant for yield and most other traits. Bed planted genotypes demonstrated over 50% less lodging compared with flat planting providing evidence that bed planting irrigated spring wheat may be beneficial where chronic lodging occurs. Although SUPER SERI significantly out-yielded Seri 82, it also exhibited significantly more lodging.