Normal view MARC view ISBD view

Influence of agronomic practice on foliar blight, and identification of alternate hosts in the rice-wheat cropping system

By: Singh, R.V | Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico DF (Mexico).
Contributor(s): Ahmad, R [coaut.] | Duveiller, E.|Dubin, H.J.|Reeves, J.|McNab, A [eds.] | Singh, A.K [coaut.] | Singh, S.P [coaut.].
Material type: materialTypeLabelBookAnalytics: Show analyticsPublisher: Mexico, DF (Mexico) CIMMYT|UCL|BADC : 1998ISBN: 970-648-001-3.Subject(s): Bipolaris | Blights | Crop management | Cropping systems | Hosts | Oryza | CIMMYT | TriticumDDC classification: 633.1194 Summary: Foliar blight of wheat, caused mainly by Bipolaris sorokiniana and Alternaria triticina, adversely affects the crop, particularly under late sown conditions. Due to the prevalence of the rice-wheat cropping system and late rice harvest in eastern Uttar Pradesh, wheat is sown after mid December. The crop sown during late December coincides with foliar blight infection during late February and March, resulting in substantial yield losses. The influence of agronomic practice on foliar blight, and the identification of alternate hosts in the rice-wheat cropping system are presented. With less space between rows (15 cm), a high seed rate (125 kg ha-1), and full fertilizer dose (120:60:60 N:P:K),foliar blight intensity increased in comparison to wider spaced rows (23 am), a lower seed rate (100 kg ha-1), and half the fertilizer dose (60:30:30 N:P:K). An increased number of irrigation applications (6) and delayed sowing (after 30th November) increased foliar blight intensity compared with fewer irrigation applications (3) and timely sowing. Isolating fungi from potential hosts indicated that Phalaris minor harbors B. sorokiniana and A. alternata, while only A. alternata was isolated from Anagallis arvensis and Cannabis sativa. Alternaria alternata and A. triticina were isolated from Chenopodium album and Circium arvense. Only B. sorokiniana was pathogenic on both wheat and Phalaris minor, indicating that P. minor serves as an alternate host.Collection: CIMMYT Publications Collection
Tags from this library: No tags from this library for this title. Log in to add tags.
    average rating: 0.0 (0 votes)
Item type Current location Collection Call number Copy number Status Date due Barcode Item holds
Conference proceedings CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

CIMMYT Publications Collection 633.1194 DUV (Browse shelf) 1 Available 2A624337
Total holds: 0

Foliar blight of wheat, caused mainly by Bipolaris sorokiniana and Alternaria triticina, adversely affects the crop, particularly under late sown conditions. Due to the prevalence of the rice-wheat cropping system and late rice harvest in eastern Uttar Pradesh, wheat is sown after mid December. The crop sown during late December coincides with foliar blight infection during late February and March, resulting in substantial yield losses. The influence of agronomic practice on foliar blight, and the identification of alternate hosts in the rice-wheat cropping system are presented. With less space between rows (15 cm), a high seed rate (125 kg ha-1), and full fertilizer dose (120:60:60 N:P:K),foliar blight intensity increased in comparison to wider spaced rows (23 am), a lower seed rate (100 kg ha-1), and half the fertilizer dose (60:30:30 N:P:K). An increased number of irrigation applications (6) and delayed sowing (after 30th November) increased foliar blight intensity compared with fewer irrigation applications (3) and timely sowing. Isolating fungi from potential hosts indicated that Phalaris minor harbors B. sorokiniana and A. alternata, while only A. alternata was isolated from Anagallis arvensis and Cannabis sativa. Alternaria alternata and A. triticina were isolated from Chenopodium album and Circium arvense. Only B. sorokiniana was pathogenic on both wheat and Phalaris minor, indicating that P. minor serves as an alternate host.

English

9806|AGRIS 9802

Jose Juan Caballero

CIMMYT Publications Collection

There are no comments for this item.

Log in to your account to post a comment.
baner

International Maize and Wheat Improvement Center (CIMMYT) © Copyright 2015. Carretera México-Veracruz. Km. 45, El Batán, Texcoco, México, C.P. 56237.
If you have any question, please contact us at CIMMYT-Knowledge-Center@cgiar.org

Centro Internacional de Mejoramiento de Maíz y Trigo (CIMMYT) © Copyright 2015. Carretera México-Veracruz. Km. 45, El Batán, Texcoco, México, C.P. 56237.
Si tiene cualquier pregunta, contáctenos a CIMMYT-Knowledge-Center@cgiar.org