January 2015

Development of elite medium staple cotton (G. Hirsutum) genotypes for production in middleveld upland ecologies

Ten (10) medium staple cotton genotypes comprising of five commercial varieties and five experimental lines were evaluated for field performance, genetic and environmental variability. The trials were laid out in a randomized complete block design (RCBD) with three replications. Analysis of variance was done for total seed cotton yield, lint yield, boll weight, earliness and gin out turn (GOT %) using Genstat 14th...

Author(s): F. Mukoyi, W. Mubvekeri, D. Kutywayo, V. Muripira and N. Mudada

January 2015

Effect of weed control methods on weed density and maize (Zea mays L.) yield in west Shewa Orimia, Ethiopia

Field experiments were conducted during 2013-2014 crop seasons at Ambo and Guder to study the effect of weed control methods on weed dynamics in maize (Zea mays L.) variety BH-660 in randomized complete block design with three replications. Five treatments, including Nicosulfuron (Arrow 75 WDG) at 0.09 kg ha-1 + silwet gold (adjuvant) at 0.10%, s-metolachlor 290 + Atrazine (Primagram) at 3.00 kg ha-1, s-metolachlor...

Author(s): Tesfay Amare, Amin Mohammed, Mulugeta Negeri and Frehiwot Sileshi

January 2015

Distribution of kolanut weevil (Balanogastris kolae (Coleoptera:Curculionidae) in Cola nitida stored in baskets

The kolanut weevil, Balanogastris kolae is usually referred to as a field-to-store pest as their infestation starts in the field and continues in storage. The distribution preferences of the weevil were investigated with a view of determining their vertical and horizontal distribution in storage baskets. The kola pods used for this experiment were obtained from kola groves at the Cocoa Research Institute of Nigeria...

Author(s): Ndubuaku, T. C. N. , Asogwa, E. U. and Hassan, A. T.

January 2015

Composition and taxonomic similarity of the periphytic algal community in different natural substrates in a neotropical floodplain, Brazil

The present study investigated the species composition and taxonomic similarity of periphytic algae on three species of macrophytes (Eichhornia azurea Kunth, Nymphaea amazonum Martius & Zuccarini and Oxycaryum cubense (Poeppig & Kunth) Lye) and also some limnological variables in a lake permanently connected to the Paraná River at the Upper Paraná River floodplain, Brazil, from June 2008 to March...

Author(s): Stefania Biolo, Vanessa Majewski Algarte and Liliana Rodrigues