Subtropical maize
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TextPublication details: Mexico, DF (Mexico) CIMMYT : 2002Description: p. 27-54Subject(s): Summary: It is estimated that a total of 18 million hectares of the developing world's total maize area are grown under subtropical/midaltitude environments. Of this area, some 7 mil1ion hectares are grown at midaltitudes (900-1,800 masl) within the tropics, mostly in eastern and southern Africa. The other 11 mil1ion hectares are mostly found in lowland areas at subtropical latitudes (between 23° and 34° north and south). Major maize growing countries in these ecologies are: India, China, Pakistan, Nepal, Vietnam, Afghanistan, Turkey, Syria and Iran in Asian continent, Brazil, Mexico and Colombia in Latin America, and Egypt, Tanzania. Kenya, Zimbabwe, Ethiopia. Malawi. Angola. Zambia. Mozambique, Uganda, Cameroon and Nigeria in African continent. Maize in the subtropical and midaltitude areas of the developing world is grown under multitude of environments with varying degrees of preference for maturity and grain color (Figure 1). In these ecologies maize is predominantly used for human consumption as is the case in Sub Saharan Africa. However. the use of maize as animal feed is increasing in Asia and Latin America in recent years. especially in countries such as China. India and Brazil. In subtropical environments a variety of stresses, biotic and abiotic, reduce maize yields. Moisture-stress (excess and deficient) and low soil fertility, especially low-N conditions are the major abiotic constraints to maize production in the subtropics. In the biotic stresses, northern leaf blight (turcicum), common rust, and stalk and ear rot (caused by Fusarium and Diploida) are the predominant diseases. Maize streak virus and Striga, a parasitic weed, cause serious economic losses in maize growing regions of Eastern and Southern Africa. In recent years, we have noticed that gray leaf spot (Cercospora maydis) is becoming a major problem in some countries. Among insect pests, stem borers, armyworms, earworms, rootworms, and storage insects cause the greatest loss to maize yields in the subtropics.
| Item type | Current library | Collection | Call number | Copy number | Status | Date due | Barcode | Item holds | |
|---|---|---|---|---|---|---|---|---|---|
| Reprint | CIMMYT Knowledge Center: John Woolston Library | CIMMYT Staff Publications Collection | CIS-4138 (Browse shelf(Opens below)) | 1 | Available | 630169 |
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It is estimated that a total of 18 million hectares of the developing world's total maize area are grown under subtropical/midaltitude environments. Of this area, some 7 mil1ion hectares are grown at midaltitudes (900-1,800 masl) within the tropics, mostly in eastern and southern Africa. The other 11 mil1ion hectares are mostly found in lowland areas at subtropical latitudes (between 23° and 34° north and south). Major maize growing countries in these ecologies are: India, China, Pakistan, Nepal, Vietnam, Afghanistan, Turkey, Syria and Iran in Asian continent, Brazil, Mexico and Colombia in Latin America, and Egypt, Tanzania. Kenya, Zimbabwe, Ethiopia. Malawi. Angola. Zambia. Mozambique, Uganda, Cameroon and Nigeria in African continent. Maize in the subtropical and midaltitude areas of the developing world is grown under multitude of environments with varying degrees of preference for maturity and grain color (Figure 1). In these ecologies maize is predominantly used for human consumption as is the case in Sub Saharan Africa. However. the use of maize as animal feed is increasing in Asia and Latin America in recent years. especially in countries such as China. India and Brazil. In subtropical environments a variety of stresses, biotic and abiotic, reduce maize yields. Moisture-stress (excess and deficient) and low soil fertility, especially low-N conditions are the major abiotic constraints to maize production in the subtropics. In the biotic stresses, northern leaf blight (turcicum), common rust, and stalk and ear rot (caused by Fusarium and Diploida) are the predominant diseases. Maize streak virus and Striga, a parasitic weed, cause serious economic losses in maize growing regions of Eastern and Southern Africa. In recent years, we have noticed that gray leaf spot (Cercospora maydis) is becoming a major problem in some countries. Among insect pests, stem borers, armyworms, earworms, rootworms, and storage insects cause the greatest loss to maize yields in the subtropics.
English
0408|AGRIS 0401|AL-Maize Program
Juan Carlos Mendieta
CIMMYT Staff Publications Collection
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