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1.
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Maize yield response as affected by sulfur, phosphorus and nitrogen as banded applications on a volcanic ash derived tropical soil
by Raun, W.R | Barreto, H.J [coaut.] | Larios, L [coaut.] | Moscoso, B [coaut.] | Perez, C [coaut.] | Soto, N [coaut.]. Source: Proyectos Colaborativos de Agronomia, Desarrollo y Mejoramiento de Germoplasma en Maiz (Zea mays L.):Material type:  Book Publisher: 1989Collection: CIMMYT Staff Publications CollectionAvailability: Items available for loan: CIMMYT Knowledge Center: John Woolston Library [Call number: CIS-1313] (2).
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2.
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Efecto del nitrogeno y el azufre en el rendimiento del maiz, (Zea mays L.) en la labranza de conservacion
by Pierre, R | Barreto, H.J [coaut.] | Raun, W.R [coaut.] | Torres A., J [coaut.]. Source: Programa Cooperativo Centroamericano para el mejoramiento de Cultivos y Animales (PCCMCA), 37;Material type: Book Publisher: 1991Collection: CIMMYT Staff Publications CollectionAvailability: Items available for loan: CIMMYT Knowledge Center: John Woolston Library [Call number: CIS-1575] (2).
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3.
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El analisis economico de los resultados experimentales cuando existen efectos residuales
by Saín, G | Barreto, H.J [coaut.] | Borbon Castro, E [coaut.] | Raun, W.R [coaut.]. Source: Programa Cooperativo Centroamericano para el mejoramiento de Cultivos y Animales (PCCMCA), 37;Material type: Book Publisher: 1991Collection: CIMMYT Staff Publications CollectionAvailability: Items available for loan: CIMMYT Knowledge Center: John Woolston Library [Call number: CIS-1587] (2).
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4.
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Evaluacion de fuentes, niveles y metodos de aplicacion de fosforo y respuesta al azufre, en los sistemas maiz-frijol y maiz-sorgo en laderas El Salvador, 1990
by Sosa, H | Alvarado, A.G [coaut.] | Barreto, H.J [coaut.] | Bonilla, S [coaut.] | Mendoza, V.M [coaut.] | Raun, W.R [coaut.]. Source: Programa Cooperativo Centroamericano para el mejoramiento de Cultivos y Animales (PCCMCA), 37;Material type: Book Publisher: 1991Collection: CIMMYT Staff Publications CollectionAvailability: Items available for loan: CIMMYT Knowledge Center: John Woolston Library [Call number: CIS-1597] (2).
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5.
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Efecto del azufre, ante un nivel de nitrogeno y fosforo en el sistema maiz-frijol, en laderas. El Salvador, 1990
by Sosa, H | Alvarado, A.G [coaut.] | Barreto, H.J [coaut.] | Bonilla, S [coaut.] | Mendoza, V.M [coaut.] | Raun, W.R [coaut.]. Source: Programa Cooperativo Centroamericano para el mejoramiento de Cultivos y Animales (PCCMCA), 37;Material type: Book Publisher: 1991Collection: CIMMYT Staff Publications CollectionAvailability: Items available for loan: CIMMYT Knowledge Center: John Woolston Library [Call number: CIS-1596] (2).
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6.
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Ensayos regionales de agronomia de los programas nacionales de Centroamerica y el CIMMYT, 1989
by Raun, W.R | Barreto, H.J [coaut.]. Material type: Book Publisher: Maracay (Venezuela) FONAIAP|CIMMYT : 1990Collection: CIMMYT Staff Publications CollectionCollection: General Book CollectionAvailability: Items available for loan: CIMMYT Knowledge Center: John Woolston Library [Call number: 633.15 REU 1990] (2).
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7.
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Experiencias con labranza de conservacion en laderas, sistemas maiz-sorgo y maiz-frijol, El Salvador, 1990
by Mendoza, V.M | Alvarado, A.G [coaut.] | Barreto, H.J [coaut.] | Calderon, F [coaut.] | Raun, W.R [coaut.] | Sosa, H [coaut.]. Material type: Book Publisher: Maracay (Venezuela) FONAIAP|CIMMYT : 1990Collection: CIMMYT Staff Publications CollectionCollection: General Book CollectionAvailability: Items available for loan: CIMMYT Knowledge Center: John Woolston Library [Call number: 633.15 REU 1990] (2).
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8.
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Frozen versus non-frozen sample preparation for plant tissue phosphorus analysis
by Raun, W.R | Barreto, H.J [coaut.] | Olson, R.A [coaut.] | Sander, D.H [coaut.]. Source: Communications in Soil Sciences and Plant AnalysisMaterial type:  Article Publisher: 1989Collection: CIMMYT Staff Publications CollectionAvailability: Items available for loan: CIMMYT Knowledge Center: John Woolston Library [Call number: CIS-1311] (2).
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9.
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Use stability analysis for long-term soil fertility experiments
by Raun, W.R | Barreto, H.J [coaut.] | Westerman, R.L [coaut.]. Source: Agronomy JournalMaterial type: Article Publisher: 1993Collection: CIMMYT Staff Publications CollectionCollection: Serials CollectionAvailability: Items available for loan: CIMMYT Knowledge Center: John Woolston Library [Call number: Look under journal title] (1).
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10.
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Maize grain yield response to sulphur fertilization in Central America
by Raun, W.R | Barreto, H.J [coaut.]. Source: Sulphur in AgricultureMaterial type: Article Publisher: 1992Collection: CIMMYT Staff Publications CollectionAvailability: Items available for loan: CIMMYT Knowledge Center: John Woolston Library [Call number: CIS-1718] (1).
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11.
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Regional maize grain yield response to applied phosphorus in Central America
by Raun, W.R | Barreto, H.J [coaut.]. Source: Agronomy JournalMaterial type: Article Publisher: 1995Collection: CIMMYT Staff Publications CollectionCollection: Serials CollectionAvailability: Items available for loan: CIMMYT Knowledge Center: John Woolston Library [Call number: Look under journal title] (1).
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