COMBINED EFFECT OF TILLAGE SYSTEMS, SOWING METHODS AND WEED CONTROL TREATMENTS ON WHEAT YIELD AND ASSOCIATED WEEDS

Abd El-Samei, F.S.; Mahfouz, H.; Megawer, Ekram A.; Rady, M.E.

doi:10.21608/fjard.2009.197033

COMBINED EFFECT OF TILLAGE SYSTEMS, SOWING METHODS AND WEED CONTROL TREATMENTS ON WHEAT YIELD AND ASSOCIATED WEEDS

Document Type : Research articles.

Authors

Agron. Dept. , Fac. Agric. , Fayoum University

10.21608/fjard.2009.197033

Abstract

Two filed experiments were conducted at the Experimental
Farm of Faculty of Agriculture, Fayoum University in the two
successive growing seasons 2006/2007 and 2007/2008 .The
principal aim was to investigate the effect of tillage system, sowing
methods, weed control treatments and their interactions on growth,
yield, yield components and grain protein content. The experiments
were laid-out in a Split-Split Plot arranged in Randomize Complete
Block design with four replications. The plot area was 10.5 m2. The
wheat variety used was Sakha94. Results generally showed that the
major weeds species associated with wheat crop were mostly broadleaved weeds. The lowest weights in fresh and dry broad leaved
weeds was obtained with tillage system (T2) compared with ordinary
tillage (T1) in both seasons, and significantly increased plant height,
number of spikes/m2, number of grains /spike, grain weight(g)
/spike, , total protein percentage, and grain yield (ton/fed). Drilling
method decreased the fresh and dry weight of weeds compared with
broadcasting method and increased plant height, flag leaf area,
number of grains/spike, grain weight/spike seed index (g), , harvest
index (%), and grain yield. On the other hand broadcasting method
increased only number of tillers/plant, in second season and straw
yield ( ton/fed)in both seasons.
All chemical weed control treatments decreased fresh and dry
weights of broad-leaved weeds compared with unweeded. The
highest reduction in broad-leaved weeds was achieved with
Tribenuron-methyl (95%) along with hand weeding (70%). Also
these treatments had significant effects on yield and yield
components as well as, the total protein percentage in grains.
Tribenuron-methyl treatment exhibited the highest grain yield (2.62
and 2.72t/fed.) followed by hand weeding treatment (2.08 and
2.0t/fed) in first and second season, respectively.
Interaction effect between tillage systems (T) and weed
control (WC) was significant on plant height at harvest, flag leaf
area, and harvest index. While the interaction between sowing
methods (SM) and weed control (WC) was significant on number of
tillers/plant, number of spikes/plant, number of grains /spike.

Keywords