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Development of acid soil tolerant maize germplasm

By: De León, C.
Contributor(s): Narro, L.A [coaut.] | Pandey, S [coaut.] | Vasal, S.K.|Gonzalez Ceniceros, F.|XiongMing, F [eds.].
Material type: materialTypeLabelBookAnalytics: Show analyticsPublisher: Los Baños, Laguna (Philippines) PCARRD : 2000Description: 9 pages.Subject(s): Acid soils | Injurious factors | Maize | Research projects | Resistance to injurious factors | CIMMYT | Zea mays AGROVOC | Plant breeding AGROVOCSummary: In the developing countries the demand for maize continues to increase, while the amount of land devoted to its production is decreasing, bringing an associated increase in importation of the cereal by many countries. In the world, nearly half of the agricultural land has acid soils, found mostly in the tropical areas. If the world is going to meet the demand of feeding its population, it is going to be by increasing food production in new areas, like those where the acid soils are. These soils are known for its low productivity due to several factors associated mainly with aluminum and manganese toxicities and low levels of most of the nutrients required for plant growth. Effects due to acidity and the associated metal toxicities in the soils, can be reduced through the use amendments (lime, gypsum) which in most cases are costly and not easily available to poor farmers. The easiest way to solve the problem is through the development of germplasm tolerant to these stresses. Following a reciprocal recurrent selection scheme, CIMMYT -South American Regional Maize Program has developed several open pollinated varieties, inbred lines, synthetics and hybrids with good agronomic characters under both acid and nonacid soil conditions. These are available to national programs and other institutions in the form of "Acid Soils" trials.Collection: CIMMYT Staff Publications Collection
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Conference proceedings CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

CIMMYT Staff Publications Collection CIS-3385 (Browse shelf) 1 Available 631352
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In the developing countries the demand for maize continues to increase, while the amount of land devoted to its production is decreasing, bringing an associated increase in importation of the cereal by many countries. In the world, nearly half of the agricultural land has acid soils, found mostly in the tropical areas. If the world is going to meet the demand of feeding its population, it is going to be by increasing food production in new areas, like those where the acid soils are. These soils are known for its low productivity due to several factors associated mainly with aluminum and manganese toxicities and low levels of most of the nutrients required for plant growth. Effects due to acidity and the associated metal toxicities in the soils, can be reduced through the use amendments (lime, gypsum) which in most cases are costly and not easily available to poor farmers. The easiest way to solve the problem is through the development of germplasm tolerant to these stresses. Following a reciprocal recurrent selection scheme, CIMMYT -South American Regional Maize Program has developed several open pollinated varieties, inbred lines, synthetics and hybrids with good agronomic characters under both acid and nonacid soil conditions. These are available to national programs and other institutions in the form of "Acid Soils" trials.

Global Maize Program

English

0208|AGRIS 0201|AL-Maize Program|R01PROCE

Juan Carlos Mendieta

INT2062

CIMMYT Staff Publications Collection

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