Normal view MARC view ISBD view

Effect of phosphorus availability on growth, p uptake, and efficiency in maize soybean intercrops in different environments

By: Rajbhandari, N.P | Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico, DF (Mexico) | Proceedings of the Asian Regional Maize Workshop Bangkok (Thailand) 5-8 Aug 2002.
Contributor(s): Srinivasan, G.|Zaidi, P.H.|Prasanna, B.M.|Gonzalez, F.|Lesnick, K [eds.].
Material type: materialTypeLabelBookAnalytics: Show analyticsPublisher: Mexico, DF (Mexico) CIMMYT : 2004Description: p. 214-230.ISBN: 970-648-116-8.Subject(s): Environmental conditions | Insect diseases | Intercropping | Maize | Phosphorus | Soil chemistry | Soybeans | CIMMYTSummary: While there is an abundance of experimental results on increased productivity of intercrop systems, the interpretations are limited to the effect of increased crop diversity on reducing insect and disease attack, and increasing the efficiency of resource utilization. There is a dearth of information on how intercrops respond to varying levels of P availability leading to greater efficiency. The present experiment was conducted at the University of Hawaii to evaluate a maize/soybean intercrop system for periodic dry matter production, leaf P concentration and leaf properties. P uptake and its conversion efficiency were evaluated to determine whether the increased productivity of the mixture was only due to increased uptake of resources or efficient conversion to dry matter or grain yield by intercrop components under competition. Growth of intercrop maize was no different than the sole crop for their periodic dry matter, P concentration, and P uptake, but was profoundly affected by environment and P availability in the soil. The response of intercrop soybean to environment and P level was more complex and differed from that of the sole crop. Interactions between environment, P level, and the growth conditions of the companion maize determined the response of intercrop soybean. Soybean leaf tissue P concentration and P uptake was influenced by environment, P levels, and system (intercrop versus sole crop) and their interactions. The increased productivity of the intercrop combination was associated with increased extraction of soil phosphorus. In low-input subsistence agriculture, the accelerated P mining - the faster removal of limited soil P - may cause the intercrop systems to be less sustainable. There is no alternative to P fertilization in such systems for long-term sustainability.Collection: CIMMYT Staff 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 Staff Publications Collection CIS-4292 (Browse shelf) 1 Available 630607
Total holds: 0

While there is an abundance of experimental results on increased productivity of intercrop systems, the interpretations are limited to the effect of increased crop diversity on reducing insect and disease attack, and increasing the efficiency of resource utilization. There is a dearth of information on how intercrops respond to varying levels of P availability leading to greater efficiency. The present experiment was conducted at the University of Hawaii to evaluate a maize/soybean intercrop system for periodic dry matter production, leaf P concentration and leaf properties. P uptake and its conversion efficiency were evaluated to determine whether the increased productivity of the mixture was only due to increased uptake of resources or efficient conversion to dry matter or grain yield by intercrop components under competition. Growth of intercrop maize was no different than the sole crop for their periodic dry matter, P concentration, and P uptake, but was profoundly affected by environment and P availability in the soil. The response of intercrop soybean to environment and P level was more complex and differed from that of the sole crop. Interactions between environment, P level, and the growth conditions of the companion maize determined the response of intercrop soybean. Soybean leaf tissue P concentration and P uptake was influenced by environment, P levels, and system (intercrop versus sole crop) and their interactions. The increased productivity of the intercrop combination was associated with increased extraction of soil phosphorus. In low-input subsistence agriculture, the accelerated P mining - the faster removal of limited soil P - may cause the intercrop systems to be less sustainable. There is no alternative to P fertilization in such systems for long-term sustainability.

English

0501|AGRIS 0501|AL-Maize Program

Juan Carlos Mendieta

CIMMYT Staff 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.
Monday –Friday 9:00 am. 17:00 pm. 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.
Lunes –Viernes 9:00 am. 17:00 pm. Si tiene cualquier pregunta, contáctenos a CIMMYT-Knowledge-Center@cgiar.org