Effect of plant spacing and weed control treatments on maize yield and associated weeds in sandy soils

Abouziena, H.F. and El-Metwally, I.M. and El-Desoki, E.R. (2008) Effect of plant spacing and weed control treatments on maize yield and associated weeds in sandy soils. . American-Eurasian Journal of Agricultural and Environmental Science, 4 (1). pp. 9-17.

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The effect of plant spacing, weed control treatments and their interaction on maize yield and weed growth in sandy soils is not completely understood. Therefore, field experiments were conducted during 2005 and 2006 growing seasons to determine if management can improve maize competitiveness with weeds and thus achieve the yield potential of maize in sandy soils. The experiment included six plant spacing (two ridge width 60 and 70 cm with 3 constant spaced hills (20, 25 and 30 can apart) on one side of ridge, at approximately 35000, 28000 and 23333 plants/fed for ridge 60 cm width and 30000, 24000 and 20000 plants/fed for ridge 70 cm width, respectively) and four weed control treatments, e.g., hand hoeing twice, fluroxypyr + one hoeing, one hoeing + sethoxydim and a nonweeded check. Plant spacing affected dry weight of weeds growing with maize. Biomass of weed species was decreased, in most cases, under narrow plant spacing. Weeds were controlled by all treatments compared with the nontreated check; however, herbicide treatments were not superior to hand-hoeing treatments. Using wide plant spacing favored growth of maize plant and weeds. Planting at wide spacing also improved most yield parameters of ear. The highest biological and grain yields of maize resulted at spacing of 60 x 25 cm (28000 plant population/fed). All weed control treatments improved grain yield up to two fold compared with the nonweeded check. The interaction between plant spacing and weed control treatments had significant effects on total weeds dry weight, as well as number of kernels/ear, grain index and biological yield parameters of maize. Grain yields were improved with fluroxypyr applied 2 wk after sowing (WAS) maize followed by one hand hoeing 6 WAS or hoeing at 3WAS followed by sethoxydim applied 6 WAS. However, the highest yields were obtained by hoeing two times during the growing season. Maize weeds control by the hoeing or herbicides treatments was enhanced in narrow- compared to wide-spacing maize 8 WAS. Application of the three weed control treatments resulted in less weed biomass and greater maize yield in narrow- compared to wide-spacing maize

Item Type: Article
Author Affiliation: Botany Department, National Research Centre, Dokki, Cairo, Egypt
Subjects: Plant Production > Production Practices
Divisions: Maize
Depositing User: Mr T L Gautham
Date Deposited: 06 Jan 2011 19:47
Last Modified: 06 Jan 2011 19:47
Official URL: http://www.idosi.org/aejaes/jaes4(1)/2.pdf
URI: http://eprints.icrisat.ac.in/id/eprint/1277

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