Knowledge Center Catalog

Fertilizer use by maize in response to rainfall regimes

By: Contributor(s): Material type: TextTextPublication details: Addis Ababa (Ethiopia) CIMMYT : 1997ISBN:
  • 92-9146-025-7
Subject(s): DDC classification:
  • 633.15 EAS No. 5
Summary: Katumani Composite B and Coast Composite maize varieties were grown as sole crop or intercropped with cowpea at Tunyai and Mtwapa FURP trial sites respectively between 1987 and 1990 in a randomized complete block design with two replications. Tunyai has a bimodal while Mtwapa has a unimodal cropping system. Nitrogen and phosphorus were applied to maize in a four by four factorial experiment. This study found that intercropping had no significant (p > 0.05) effect on maize grain yields at both sites. Grain yield was increased by fertilizer application at Tunyai. There was a significant (p < 0.01) correlation between rainfall and grain yield and fertilizer use efficiency (FUE) with intercropping. At Mtwapa rainfall was not significantly (p > 0.05) correlated to either grain yield or FUE. However, without fertilizer application at Mtwapa, both grain yield and FUE in intercropping were significantly (p < 0.001) correlated to rainfall. Intercropping maize with cowpea is recommended as it does not significantly lower yields, and can increase fertilizer use efficiency.
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Holdings
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 633.15 EAS No. 5 (Browse shelf(Opens below)) 1 Available 1Q624172
Total holds: 0

Katumani Composite B and Coast Composite maize varieties were grown as sole crop or intercropped with cowpea at Tunyai and Mtwapa FURP trial sites respectively between 1987 and 1990 in a randomized complete block design with two replications. Tunyai has a bimodal while Mtwapa has a unimodal cropping system. Nitrogen and phosphorus were applied to maize in a four by four factorial experiment. This study found that intercropping had no significant (p > 0.05) effect on maize grain yields at both sites. Grain yield was increased by fertilizer application at Tunyai. There was a significant (p < 0.01) correlation between rainfall and grain yield and fertilizer use efficiency (FUE) with intercropping. At Mtwapa rainfall was not significantly (p > 0.05) correlated to either grain yield or FUE. However, without fertilizer application at Mtwapa, both grain yield and FUE in intercropping were significantly (p < 0.001) correlated to rainfall. Intercropping maize with cowpea is recommended as it does not significantly lower yields, and can increase fertilizer use efficiency.

English

9801|AGRIS 9702

Jose Juan Caballero

CIMMYT Publications Collection


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