Abstract
Aim: To reveal the inflorescence morphological characters affecting Cletus fuscescens (Walker) (Hemiptera: Coreidae ) infestation. Study Design: Field experiments were laid out in a randomized complete block design while the laboratory experiments were laid out in a completely randomized design. Place and Duration of Study: Experiments were conducted at the vegetable field and entomology laboratory of the National Horticultural Research Institute, Ibadan, Nigeria, during the rainy seasons of 2009 and 2010. Methodology: Nine accessions of grain amaranth comprising of 3 accessions with lax inflorescence (RRC 646, P 373 and Oscar Blanco), 3 accessions with intermediate inflorescence (RRC 1027, Tibet and Niqua) and 3 accessions with dense inflorescence (D70-1, RRC 551 and Zhen Ping) were planted in the field. Weekly visual counts of C. fuscescens adults and nymphs on
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