Search

Seventeen maize entries comprising advanced breeding lines and commercial varieties alongwith a check "Soan-3" were evaluated at Agricultural Research Institute, Dera Ismail Khan, Pakistan during 2008. Analysis of variance revealed that maize varieties differed significantly for days to 50 percent silking, plant height and grain yield per hectare. Varieties Sahiwal-2002 and AZC-3 took maximum days (56) to 50 percent silking whereas variety EV-1097 took minimum days (44). The highest plant height (222 cm) was attained by Margala and Sahiwal-2002 against the lowest (155 cm) by Agaiti-2002. Maize variety EV- 5098 produced higher grain yield (5.804 t/ha) whereas variety AZC-3 produced the lowest (3.332 t/ha). Islamabad Gold and Sahiwal-2002 produced significantly at par grain yield with the check. The maize varieties showed wide genetic back ground and hence yield ranged from 3.332 to 5.804 tons per hectare. Varieties EV-5098, Sahiwal-2002 and Islamabad Gold were found as the most promising. These varieties possess the potential to increase average maize grain yield in D.I.Khan region. [ABSTRACT FROM AUTHOR]

A study was carried out during 2012 at Grain Research, Training and Storage Management Cell, Department of Entomology, University of Agriculture, Faisalabad to evaluate the quantitative losses caused by maize weevil (Sitophilus zeamais) on Eight maize genotype (NK-8441, MMRI-Yellow, 30K08, Agati-2002, SWL-2002, EV-6098, EV-1098 and Pak-Afghan) were selected. The experiment was conducted in a walk-in environmental chamber maintained at 28°C, 32°C and 35°C. Physical parameters included percent insect damaged and undamaged grains, frass weight, weight loss and number of insect emerged. Frass weight was taken three times by electrical balance, while determination of weight loss, dead as well as live adult, grain dust and other excretion produced during the insect infestation was recorded. The treatments effect showed a significant difference with one another, regarding their effectiveness. Result depicted that genotype MMRI-Yellow was observed to be most susceptible while 30K08 was found to be resistant genotype. More F1 progeny of S. zeamais was recorded at 32°C and followed by 28°C and 35°C. [ABSTRACT FROM AUTHOR]