Knowledge Center Catalog

Controlling leaf spot of wheat through nutrient management

By: Contributor(s): Material type: TextTextPublication details: Mexico, DF (Mexico) CIMMYT|UCL|BADC : 1998ISBN:
  • 970-648-001-3
Subject(s): DDC classification:
  • 633.1194 DUV
Summary: Leaf spot of wheat, caused by Bipolaris sorokiniana, is a major problem for wheat production in Bangladesh. During a study on the status of leaf blight of wheat, it appeared that none of the currently cultivated wheat varieties in the country are free from the disease. More than 600 wheat materials of exotic and national origin were screened in the field under natural epiphytotics and artificial inoculation. It was observed that only a few showed resistance to B. sorokiniana but none showed immunity. A study into the effect of B. sorokiniana on wheat yield revealed that the artificial inoculation of plants at the flag leaf stage reduced the number of grains per ear and 1000-grain weight by 7-100% and 12-100%, respectively, compared with the control. Nutrient elements, especially micro-elements Cu, B, and Mo, were used as an alternate method of leaf spot control with the least possible disturbance of the overall natural soil fertility balance. Cu, B, and Mo, applied either as a foliar spray or to the soil, did not significantly affect leaf blight incidence; however, B application increased grain formation and wheat yields. An in vitro study revealed that B has a strong inhibitory effect on B. sorokiniana.
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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 633.1194 DUV (Browse shelf(Opens below)) 1 Available 2C624337
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Leaf spot of wheat, caused by Bipolaris sorokiniana, is a major problem for wheat production in Bangladesh. During a study on the status of leaf blight of wheat, it appeared that none of the currently cultivated wheat varieties in the country are free from the disease. More than 600 wheat materials of exotic and national origin were screened in the field under natural epiphytotics and artificial inoculation. It was observed that only a few showed resistance to B. sorokiniana but none showed immunity. A study into the effect of B. sorokiniana on wheat yield revealed that the artificial inoculation of plants at the flag leaf stage reduced the number of grains per ear and 1000-grain weight by 7-100% and 12-100%, respectively, compared with the control. Nutrient elements, especially micro-elements Cu, B, and Mo, were used as an alternate method of leaf spot control with the least possible disturbance of the overall natural soil fertility balance. Cu, B, and Mo, applied either as a foliar spray or to the soil, did not significantly affect leaf blight incidence; however, B application increased grain formation and wheat yields. An in vitro study revealed that B has a strong inhibitory effect on B. sorokiniana.

English

9806|AGRIS 9802

Jose Juan Caballero

CIMMYT Publications Collection


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