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Peanut/maize intercropping induced changes in rhizosphere and nutrient concentrations in shoots
1Ankara University, Faculty of Agriculture, Department of Soil Science and Plant Nutrition, 06110 Ankara, Turkey.
Plant Physiology and Biochemistry : PPB
|May 1, 2007
Summary
Intercropping peanut with maize improves iron, zinc, and phosphorus nutrition, despite a slight decrease in overall yield. This practice enhances nutrient uptake by altering rhizosphere processes.
Area of Science:
- Agricultural Science
- Plant Nutrition
- Soil Science
Background:
- Intercropping is a sustainable agricultural practice that can influence plant nutrition and soil health.
- Understanding rhizosphere dynamics is crucial for optimizing nutrient availability in crop production.
Purpose of the Study:
- To investigate the impact of intercropping peanut (Arachis hypogaea L.) with maize (Zea mays L.) on nutrient uptake and rhizosphere properties.
- To assess the effects on iron (Fe), phosphorus (P), zinc (Zn), and other essential mineral nutrients.
Main Methods:
- Greenhouse study comparing monoculture and intercropping systems.
- Analysis of shoot nutrient concentrations (Fe, P, N, K, Ca, Zn, Mn).
- Measurement of root ferric reductase activity, phytosiderophore release, rhizosphere/soil pH, and acid phosphatase activity.
Main Results:
- Intercropping enhanced shoot concentrations of Fe and Zn in peanut by approximately 2.5-fold.
- Shoot P concentrations were significantly higher in both peanut and maize under intercropping.
- Acid phosphatase activity and root ferric reducing capacity increased with intercropping.
Conclusions:
- Intercropping peanut/maize is a promising strategy to alleviate iron deficiency and improve Zn, P, and K nutrition.
- Rhizosphere modifications, including increased phosphatase activity and ferric reductase capacity, drive enhanced nutrient availability.
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