Effect of some intercropping systems of garlic and onion with sugarbeet on their yields and associated nematode , Meloidogyne javanica
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CONTRIBUTORS:
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CONFERENCE TITLE:
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CONF. LOCATION:
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None
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YEAR:
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2007
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PUB TYPE:
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Conference Paper
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SUBJECT(S):
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Effect of some intercropping systems of garlic and onion with sugarbeet on their yields and associated nematode , Meloidogyne javanica
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DISCIPLINE:
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Agricultural and Food Sciences
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HTTP:
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http://www.freewebs.com/sugarbeet_ref_1
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LANGUAGE:
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English
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PUB ID:
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103-439-361
(Last edited on
2009/11/13 04:37:32 US/Mountain)
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SPONSOR(S):
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ABSTRACT:
Two field experiments were conducted in natural infested sandy soil with root-knot nematode , Meloidogyne javanica under sprinkler irrigation system at West Nubariya district during 2003 – 2004 and 2004- 2005 growing seasons to study the effect two intercropping systems of garlic and onion with sugarbeet on yield and yield components of garlic , onion and sugarbeet as well as Meloidogyne javanica , the root-knot nematode on sugarbeet . Land equivalent ratio ( L.E.R. ) , relative crowding coefficient ( K ) , aggressivity ( A ) and total income for sugarbeet where also calculated .The experimental design was randomized complete block design of four replications .The results obtained were summarized as follows :
1. The yield , yield components and quality characters ( sucrose , total soluble soled and purity ) as well as sugar yield of sugarbeet as soled crop recorded the highest values in ridges 120 cm width compared to in ridges 60 cm width in the two seasons .
2. Growing garlic as soled or intercrops in ridges 120 cm width have yield and yield components higher than that obtained by ridges 60 cm width in both seasons .
3. Yield and yield components of onion as solid crop or intercrop in ridges 60 cm width were higher than in ridges 120 cm width in both seasons .
4. Intercropping garlic or onion with sugarbeet in 120 cm ridges width gave the higher root yield , sugar yield , yield components and quality characters of sugarbeet than those of sole cropping and intercropping with onion or garlic in ridges 60 cm width .
5. The intercropping system of 120 cm width gave higher than 60 cm width Land Equivalent Ratio “L.E.R.” ( 2.03 , 2.01 for onion and 1.99 , 1.91 for garlic ) , Relative crowding coefficient “K” ( 11.84 , 14.70 for onion and 7.26 , 4.58 for garlic ) and total income ( 6806 , 6134 L.E. for garlic and 5432 , 5047 L.E. for onion ) in the first and second seasons , respectively .
6. Aggressivity ( A ) for sugarbeet was dominant with both intercropping systems , whearse was it dominated with onion and garlic in both seasons .
7. Garlic and / or onion intercropped at densities of 33 and 66 % with sugarbeet at 100 % density significantly ( P 0.05 ) lowered M. javanica , the root-knot nematode on sugarbeet as indicated by the number of nematode galls , eggmasses and final population density as well as multiplication factors compared to those on sugarbeet alone .The highest percentage reduction in the number of galls , eggmasses in root system and final population in soil as well as multiplication factors ( 45 , 52 , 64.8 % and 58.3 % respectively ) when garlic intercropped at density 66 % with sugarbeet in ridges 120 cm width .
It can be concluded that the intercropping system of ( 100% sugarbeet + 66 % garlic ) using ridges 120 cm width system did not only reduce nematode population , but also , enhanced the growth of sugarbeet and gave significantly higher yield or economic return than the other intercropping systems .
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