TY  - PRO
AU  - Narro,L.A.
AU  - Celis,J.
AU  - Claure,T.
AU  - Edmeades,G.O.|Banziger,M.|Mickelson,H.R.|Peña-Valdivia,C.B.
AU  - Eyherabide,G.H.
AU  - Navas,A.
AU  - Pandey,S.
AU  - Pérez,J.C.
AU  - Reyes,S.
AU  - Santos,M.X.
ED  - Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico DF (Mexico)
TI  - Incidencia de la sequía en la producción de maíz en Sudamérica y la necesidad de un trabajo colaborativo
SN  - 968-6923-93-4
U1  - 633.153 
PY  - 1997///
CY  - México, DF (México)
PB  - CIMMYT
KW  - Drought stress
KW  - AGROVOC
KW  - International cooperation
KW  - Plant production
KW  - Research policies
KW  - Zea mays
KW  - CIMMYT
N2  - The area sown to maize in South America fluctuates around 18 million hectares, with an average yield of 2.21 t/ha. Some 15% of this area is usually affected by drought. Basically two types of maize are planted in the region: hard dent (MD) in the lowland tropical zone and floury morocho (MA) in the Andean region (at altitudes above 2200 m). The effect of drought stress varies for each county and type of maize. For MD, 28% of Bolivia's maize area experiences frequent drought stress; in Argentina, Brazil, Colombia, Ecuador, Peru and Venezuela, the area with drought stress ranges from 15 to 22%. Chile and Paraguay do not show any problems with drought. For MA, two-thirds of the area planted in Bolivia and Peru is subject to frequent drought stress; frequent drought stress occurs in Ecuador on 19% and in Colombia on 38% of cultivated area. The wide distribution of drought makes this an ideal target for collaborative work among research organizations that work in the areas affected; the exchange of germplasm, knowledge, and experiences would foster more rapid and efficient progress. With regard to germplasm, CIMMYT coordinates research networks for drought and for acid soils which can be utilized by collaborating countries
ER  -