Physical and Cultural Weed Control Working Group of - European ...

9 th EWRS Workshop on Physical and Cultural Weed Control 30
Samsun, Turkey, 28 – 30 March 2011
In weed control treatment without Velvet leaf most number of branches and sesame were
caused in 12 plant density Velvet leaf Sesame branch number to 27 percent rate with no weed
control treatment decreased. Average number of branches in the treated sesame seeds 0, 4, 8 and 12
plants m −2 respectively 4.83, 4.17, 3.59 and 3.51 the number (Table). Any increase in space to form
a sub-category with the lowest Sesame competitive conditions and vice versa, the number of
branches of positive and negative effects of sesame has established itself. Sadeghi et al. (2002 and
2003) found that in determining the share of each of the attributes of soy in the ability to compete
with weeds, whatever the number of branches is higher, more effective on weight loss, dry weeds
have and thus the power of competition more weeds will be more.
HighestAerial dry matter: final dry weight of sesame in weed control treatment without Velvet
leaf observed. Any Velvet leaf weed density increased final dry weight also decreased sesame; If
Velvet leaf at 12 plants m −2 decreased 20 percent compared to sesame final dry weight with no
weed control treatment was. Average dry weight in the final aerial treatment Sesame 0, 4, 8 and 12
plants m respectively in 2969, 2769, 2470 and 2378 kg ha −1 respectively (Table). Sadeghi et al.
(2002 & 2003) found that in determining the share of each of the attributes of soy in the ability to
compete with weeds, whatever the total amount of dry matter is higher, more effective on weight
loss, dry weeds have and thus the power of competition more weeds will be more. Andy and Larry
(1997) also showed the impact of weeds on Increasing crop canopy and Increasing biomass
associated products increased with was successfully compete. Hagood et al. (1980) in a study
reported that the density of 2.4 to 40 plants m −2 Velvet leaf decrease in dry weight final.was soy
Abdollahi and Bararpoor (2006) also showed that the effect of density on growth and yield Velvet
leaf soybean cultivar Williams, density 0.25 Velvet leaf plant dry weight in soybean Row m
soybeans, respectively 6.4 percent compared with weed-free treatment to reduce said. Effect of
nitrogen and row spacing on dry matter aerial harvest at the time was not statistically significant.
Sesame yield: Distance of 60 cm row spacing increased grain yield of about 10 percent
compared to row distance was 40 cm. Average grain yield of sesame in the treatment of 40 and 60
cm row spacing, respectively 683 and 762 kg ha −1 respectively (Figure 1). In a constant density of
60 cm row spacing, final dry weight and branch number. AnithaVasline et al. (2000), Sakila et al.
(2000) and Laurentin et al. (2004) showed that the reduction side number of branches per plant,
sesame yield decreased sharply.
100 N kg treated ha increased 19.5 percent yield to treatment 50 kg N ha −1 was. Average yield
in the treated sesame 50 and 100 kg of pure nitrogen, respectively 644 and 800 kg ha −1 respectively
(Fig 2). Thus increasing the amount of nitrogen, 100 kg ha −1 product height increases, the number of
branches and yield of sesame seeds was a result. Hatami (2009) Effect of nitrogen fertilizer on
growth and yield of soybean cultivars indicated that grain yield significantly affected by nitrogen
fertilizer was used. Mujaya and Yerokun, (2003) have also increased as the concentration of
nitrogen can yield 6 percent increase sesame seeds. paparimoghaddamfard (2000) and
AnithaVasline et al. (2000) showed that quite a significant effect of nitrogen fertilizer on crop
characteristics such as number of branches per plant and final height was sesame.
Comparison of the obtained show that the performance of state-free sesame Velvet leaf more
and actually had the highest yield in the case of sesame has been affected by competition. Fitting
the data showed that 17.3 percent yield loss in the first Sesame density (4 plants m −2 ) indicates the
high sensitivity to competition is Velvet leaf. Meanwhile, cultivars cultivated type (native fork) so
the competition has Velvet leaf according to review resources in comparison with other products,
has a good competitive strength. In high densities, which includes eight and 12 plants m −2 is the
amount of yield loss to 27 and 32.8 percent. Comparison of grain yield shows that all treatments are
statistically significant. The densities of respectively 0, 4, 8 and 12 plants m −2 Velvet leaf, yield rate
of 895, 740, 653 and 610 kg ha −1 was recorded. So that the maximum decrease in performance
density 12 plants m −2 Velvet leaf, most damage was estimated Velvet leaf weed (Fig 3). Blakshow
(1991) study competition in beans with pigweed Planning observed that increasing the crest of the
planned 20 to 100 plants m −2 rows, due to competition between species within weed yield loss