0150
Changes in the uptake of Cu, Zn, Fe and Mn by dent maize in blue lupin/spring oat strip cropping system
Aleksandra Glowacka
Original research article
Field experiment
Corn
Copper
Iron
Manganese
Zinc
View source document
year
2014
Country
Poland
Abstract

Strip cropping is a form of intercropping used in both tropical and temperate climate zones. Maize is a species often grown in strip cropping, because it responds to the edge effect with a substantial increase in yield. In the experiment, strip cropping of maize with blue lupin and oat was compared to sole cropping of maize in the conditions of mechanical and chemical weed control. A field experiment was conducted in 2008-2010 at the Experimental Station in Zamość, University of Life Sciences in Lublin (50°42' N, 23°6' E). The study examined the effects of the cropping method and weed control methods on the content of copper (Cu), zinc (Zn), iron (Fe) and manganese (Mn) in maize biomass and their uptake by maize. The impact of the position of the row in the strip and of the adjacent plant species on the content and uptake of these micronutrients was analysed as well. Strip cropping significantly increased Zn and Fe content in maize biomass, reduced Mn content, and did not significantly affect the accumulation of Cu. In the strip cropping, interspecific facilitation between neighbouring plant species was also observed. Placement adjacent to the oat strip contributed to higher Cu content in the maize, while placement next to blue lupin increased the content of Fe and Zn. The highest Mn content was noted in maize grown in the centre row. The results indicate that appropriate selection of plant species for strip cropping can affect the chemical composition of the plants. This makes it possible to eliminate or mitigate mineral deficiencies in the plants.

Outcomes reported
Biomass
Nutrient uptake
Yield
Synthesis
Key insight
Strip cropping with blue lupin and oat increased maize Zn and Fe accumulation and silage dry-matter yield while reducing Mn relative to sole cropping.
Limitations
Single-site three-year strip-cropping study without direct micronutrient fertilizer intervention or economic analysis.
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