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Title Competition and niche differentiation in barley (Hordeum vulgare) and wheat (Triticum aestivum) mixtures under rainfed conditions in the Central Highlands of Eritrea
Full text http://library.wur.nl/ojs/index.php/njas/article/view/432
Date 2001
Author(s) Woldeamlak, A.; Bastiaans, L.; Struik, P.C.
Abstract Barley and wheat mixtures were grown in the field using additive and replacement ratios at two locations (Halhale and Mendefera) in Eritrea during the 1997 and 1998 seasons. The aim was to assess yield advantage and to analyse competition and niche differentiation using a hyperbolic regression model. It proved advantageous to grow barley and wheat in mixtures because more land area was required to obtain the same yield in sole crops. The hyperbolic regression approach confirmed that barley and wheat grown in mixtures resulted in yield advantages as a result of complementary use of resources. Barley showed greater competitive ability than wheat; for wheat, interspecific competition was larger than the intraspecific competition while for barley the intraspecific competition was greater than the interspecific competition. Niche differentiation indices were always above 1.0 indicating that the component crops did not inhibit each other from sharing resources in a complementary way.
Subject(s) Leerstoelgroep Gewas- en onkruidecologie
Language en
Relation http://library.wur.nl/WebQuery/wurpubs/110346
Type of publication Article/Letter to editor
Format unknown/unknown
Source Netherlands Journal of Agricultural Science 49 (2001). - ISSN 0028-2928
Rights Wageningen UR
Repository Wageningen - University of Wageningen
Added to C-A: 2008-12-22;01:54:05