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Effect of tillage and weed flora on the performance of wheat genotypes and the severity of helminthosporium leaf blight

By: Contributor(s): Material type: TextTextPublication details: Kathmandu (Nepal) CIMMYT : 2004Description: p. 8Subject(s): DDC classification:
  • 581.2 DUV
Summary: An experiment was conducted in a strip-split plot design with 8 wheat genotypes at the research block of Institute of Agriculture and Animal Science (IAAS), Rampur, Chitwan during the winter season of 2002/03. The purpose of study was to observe the effect of tillage (surface and conventional seeding) and weed flora on the performance of wheat genotypes and the severity of HLB. Eight wheat genotypes namely, RR 21, BL 1473, NL 297, Kanchan, BL 2217, Milan/Shanghai- 7, NL 750 and PBW 343 were sown between tow rows or rice stubbles (25 cm) and pressed with bare feed in surface seeding. With the same row spacing same genotypes of wheat were sown by conventional method. For each variety there were plots with and without weeding and fungicide treatment. High weed density was found under surface seeding. Fungicide treatment and tillage systems were found significant enhancing the days to maturity and increasing the test weight, kernel per spike, grain yield, biological yield and harvest index. Milan/Shanghai- 7 was found the most resistant to HLB while RR 21 was the most susceptible genotypes. Higher disease severity was found in conventional method than in surface seeding. Kernel per spike, harvest index, biological yield and grain yield were significantly high in conventionally tilled wheat but test weight was higher in surface seeded wheat. Among the tested genotypes, Milan/Shanghai- 7 produced significantly higher grain yield (4.4 t/ha) in weed free and disease protected plots in surface seeding and was at par with conventionally tillage. Kanchan produced the lowest grain yield (2.3 t/ha), which was at par with RR 21, BL 1473 and BL 2217 under similar condition in surface seeding. There was no significant effect of weeds on HLB development and yield attributes of wheat.
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Item type Current library Collection Call number Copy number Status Date due Barcode Item holds
Conference proceedings CIMMYT Knowledge Center: John Woolston Library CIMMYT Publications Collection 581.2 DUV (Browse shelf(Opens below)) 1 Available B630004
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Abstract only

An experiment was conducted in a strip-split plot design with 8 wheat genotypes at the research block of Institute of Agriculture and Animal Science (IAAS), Rampur, Chitwan during the winter season of 2002/03. The purpose of study was to observe the effect of tillage (surface and conventional seeding) and weed flora on the performance of wheat genotypes and the severity of HLB. Eight wheat genotypes namely, RR 21, BL 1473, NL 297, Kanchan, BL 2217, Milan/Shanghai- 7, NL 750 and PBW 343 were sown between tow rows or rice stubbles (25 cm) and pressed with bare feed in surface seeding. With the same row spacing same genotypes of wheat were sown by conventional method. For each variety there were plots with and without weeding and fungicide treatment. High weed density was found under surface seeding. Fungicide treatment and tillage systems were found significant enhancing the days to maturity and increasing the test weight, kernel per spike, grain yield, biological yield and harvest index. Milan/Shanghai- 7 was found the most resistant to HLB while RR 21 was the most susceptible genotypes. Higher disease severity was found in conventional method than in surface seeding. Kernel per spike, harvest index, biological yield and grain yield were significantly high in conventionally tilled wheat but test weight was higher in surface seeded wheat. Among the tested genotypes, Milan/Shanghai- 7 produced significantly higher grain yield (4.4 t/ha) in weed free and disease protected plots in surface seeding and was at par with conventionally tillage. Kanchan produced the lowest grain yield (2.3 t/ha), which was at par with RR 21, BL 1473 and BL 2217 under similar condition in surface seeding. There was no significant effect of weeds on HLB development and yield attributes of wheat.

English

0407|AGRIS 0401|AL-Wheat Program

Juan Carlos Mendieta

CIMMYT Publications Collection


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