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Phosphorus management for continuous corn-cowpea production in a Brazilian Amazon Oxisol

By: Smyth, T.J.
Contributor(s): Cravo, M.S [coaut.].
Material type: materialTypeLabelArticlePublisher: 1990ISSN: 1435-0645|1435-0645 (Revista en electrónico); 0002-1962.Subject(s): Agronomic characters | America | Application methods | Cereals | Cropping patterns | Cropping patterns and systems | Crops | Cultivation | Dicotyledons | Economic plants | Elements | Environment | Feed crops | Feed grasses | Fertilizers | Fertilizing | Genetic soil types | Glumiflorae | Grain crops | Gramineae | Grasses | Industrial crops | Inorganic compounds | Leguminosae | Methods | Monocotyledons | Nonmetals | Oil crops | Papilionoideae | Phosphates | Placement | Plant propagation | Plants | Productivity | Profitability | Rosales | Salts | Site factors | Soil types | Soils | South America | Sowing AGROVOC | Starch crops | Sugar crops | Vigna | Yields AGROVOCDDC classification: 90-094613 In: Agronomy Journal v. 82, no. 2, p. 305-30990-094613Summary: Although Oxisols occupy extensive areas in the Amazon, few studies have addressed their fertilizer P requirements for sustained, long-term crop production. This field study was conducted to evaluate initial and long-term responses to P rates and placement by corn (Zea mays L.) and cowpea (Vigna unguiculata L.) when grown in annual rotation during five consecutive years in a Xanthic Hapludox (clayey, kaolinitic, isohyperthermic) near Manaus, Brazil. Effects on yields of sole broadcast P rates of 0, 22, 44, 88 and 176 kg ha-1 in split-plot combination with subplot banded P rates of 0, 11, 22 and 44 kg ha-1 were evaluated over 11 total crops. Banded P at 11 kgCollection: AGRIS Collection
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Item type Current location Collection Call number Copy number Status Date due Barcode Item holds
Article CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

AGRIS Collection 90-094613 (Browse shelf) 1 Available 90-094613
Total holds: 0

Peer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0002-1962

Although Oxisols occupy extensive areas in the Amazon, few studies have addressed their fertilizer P requirements for sustained, long-term crop production. This field study was conducted to evaluate initial and long-term responses to P rates and placement by corn (Zea mays L.) and cowpea (Vigna unguiculata L.) when grown in annual rotation during five consecutive years in a Xanthic Hapludox (clayey, kaolinitic, isohyperthermic) near Manaus, Brazil. Effects on yields of sole broadcast P rates of 0, 22, 44, 88 and 176 kg ha-1 in split-plot combination with subplot banded P rates of 0, 11, 22 and 44 kg ha-1 were evaluated over 11 total crops. Banded P at 11 kg

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