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Published online 24 January 2006
Published in Crop Sci 46:345-352 (2006)
© 2006 Crop Science Society of America
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Right arrow Allelopathy
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Allelopathic Potential of Winter Cereals and Their Cover Crop Mulch Effect on Grass Weed Suppression and Corn Development

K. V. Dhima*,a, I. B. Vasilakogloub, I. G. Eleftherohorinosc and A. S. Lithourgidisd

a Agron. Lab., Technol. and Educ. Inst. of Thessaloniki, 541 01 Thessaloniki, Greece
b Weed Science Lab., Technol. and Educ. Inst. of Larissa, 411 10 Larissa, Greece
c Agron. Lab., School of Agric., Aristotle Univ. of Thessaloniki, 541 24 Thessaloniki, Greece
d Agron. Dep., Univ. Farm, Aristotle Univ. of Thessaloniki, 570 01 Thermi, Greece


Figure 1
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  		Fig. 1. Total monthly rainfall and mean monthly temperature during the experiment.

 

Figure 2
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  		Fig. 2. Inhibitory effect (percentage of water control) of 11 winter cereal extracts on barnyardgrass seedling germination, total fresh weight, and root length. Means are averaged over two experiments. BAth, barley Athinaida; BThe, barley Thessaloniki; RAlb, rye Albania; RGer, rye Germany; RGre, rye Greece; TThi, triticale Thisvi; TNio, triticale Niovi; TVro, triticale Vronti; TCat, triticale Catria; TVri, triticale Vrito; TArt, triticale Artemis.

 

Figure 3
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  		Fig. 3. Inhibitory effect (percentage of water control) of 11 winter cereal extracts on bristly foxtail seedling germination, total fresh weight, and root length. Means are averaged over two experiments. BAth, barley Athinaida; BThe, barley Thessaloniki; RAlb, rye Albania; RGer, rye Germany; RGre, rye Greece; TThi, triticale Thisvi; TNio, triticale Niovi; TVro, triticale Vronti; TCat, triticale Catria; TVri, triticale Vrito; TArt, triticale Artemis.

 

Figure 4
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  		Fig. 4. Effect of 11 winter cereal cover crop mulches on barnyardgrass shoot number grown in corn. BAth, barley Athinaida; BThe, barley Thessaloniki; RAlb, rye Albania; RGer, rye Germany; RGre, rye Greece; TThi, triticale Thisvi; TNio, triticale Niovi; TVro, triticale Vronti; TCat, triticale Catria; TVri, triticale Vrito; TArt, triticale Artemis; C, control.

 

Figure 5
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  		Fig. 5. Effect of 11 winter cereal cover crop mulches on bristly foxtail shoot number grown in corn. BAth, barley Athinaida; BThe, barley Thessaloniki; RAlb, rye Albania; RGer, rye Germany; RGre, rye Greece; TThi, triticale Thisvi; TNio, triticale Niovi; TVro, triticale Vronti; TCat, triticale Catria; TVri, triticale Vrito; TArt, triticale Artemis; C, control.

 

Figure 6
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  		Fig. 6. Effect of 11 winter cereal cover crop mulches on barnyardgrass fresh weight grown in corn. BAth, barley Athinaida; BThe, barley Thessaloniki; RAlb, rye Albania; RGer, rye Germany; RGre, rye Greece; TThi, triticale Thisvi; TNio, triticale Niovi; TVro, triticale Vronti; TCat, triticale Catria; TVri, triticale Vrito; TArt, triticale Artemis; C, control.

 

Figure 7
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  		Fig. 7. Effect of 11 winter cereal cover crop mulches on bristly foxtail fresh weight grown in corn. BAth, barley Athinaida; BThe, barley Thessaloniki; RAlb, rye Albania; RGer, rye Germany; RGre, rye Greece; TThi, triticale Thisvi; TNio, triticale Niovi; TVro, triticale Vronti; TCat, triticale Catria; TVri, triticale Vrito; TArt, triticale Artemis; C, control.

 

Figure 8
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  		Fig. 8. Effect of 11 winter cereal cover crop mulches and two grasses (barnyardgrass and bristly foxtail) on corn silage yield. BAth, barley Athinaida; BThe, barley Thessaloniki; RAlb, rye Albania; RGer, rye Germany; RGre, rye Greece; TThi, triticale Thisvi; TNio, triticale Niovi; TVro, triticale Vronti; TCat, triticale Catria; TVri, triticale Vrito; TArt, triticale Artemis; C, control.

 

Figure 9
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  		Fig. 9. Effect of 11 winter cereal cover crop mulches and two grasses (barnyardgrass and bristly foxtail) on corn grain yield. BAth, barley Athinaida; BThe, barley Thessaloniki; RAlb, rye Albania; RGer, rye Germany; RGre, rye Greece; TThi, triticale Thisvi; TNio, triticale Niovi; TVro, triticale Vronti; TCat, triticale Catria; TVri, triticale Vrito; TArt, triticale Artemis; C, control.

 




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