this experiment was conducted to study the effect of transplanting date of onion set and transplant on earliness of onionpopulationsin khuzestan province at behbahan agriculture research station in khuzestan province and farm of baghe-e- malek region within one year (2013-14). experiment was performed in split factorial based on rcbd with three replications. main plot consisted of propagule typ...

abstract this research was conducted in hamadan province for evaluation of potato cultivars reaction to cultivation date. this experiment was performed in split plot design based on randomized complete block in thee replication with two factors, containing, i. main plots are planting date including: 9 april, 25 april, 10may, 26may, 10 june, 26 june 2. and subplots are cultivar with three levels...

John B. Masiunas Department of Natural Resources and Environmental Sciences, University of Illinois, 1201 West Gregory Drive, Urbana, IL 61801 Field experiments were conducted to quantify functional relationships between giant ragweed density and sweet corn yield and ear traits. A rectangular hyperbolic model was fit to yield loss measured in terms of marketable ear mass, appropriate for the pr...

A study was carried out to determine the effects of different mulch materials on plant growth, some quality properties and yield in melon cultivars in high altitude environmental condition. Clear mulch application affected more plant growth than the other applications. Fruit width, fruit length, dry matter in fruit, total soluble solid, color, husk thickness, fruit fresh thickness, fruit firmne...

Nematode population densities and yield of sweet potato and onion as affected by nematicides and time of application were determined in a 3-year test. Population densities of Meloidogyne incognita race 1 in untreated plots of sweet potato increased each year, but Helicotylenchus dihystera and Criconemella ornata did not. Ethoprop (6.8 kg a.i./ha) incorporated broadcast in the top 15-cm soil lay...

Understanding the impact of a pest species on a particular crop is critical for the success of a pest management program. Field studies were conducted to determine the effect of the twospotted spider mite, Tetranychus urticae Koch, on marketable yield of strawberries during the 2008/2009 and 2009/2010 growing seasons. Low, medium, and high mite infestation levels were established by initial ino...

Recurrent drought and late blight disease are the major factors limiting potato productivity in the northwest Ethiopian highlands. Incorporating drought tolerance and late blight resistance in the same genotypes will enable the development of cultivars with high and stable yield potential under erratic rainfall conditions. The objectives of this study were to assess combining ability effects an...