Applied Soil Ecology · 1998
Effects of two Compositae plant species and two types of fertilizer on nematodes in an alluvial soil, India
Akhtar, M.
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Effects of two Compositae plant species and two types of fer…
Abstract
In a field study conducted at Aligarh, India, Compositae plants were used alone and in combination with two types of fertilizers to investigate their effects on the community of soil nematodes. Organic fertilizer (composted manure – an organic source of nitrogen) and synthetic fertilizer (urea – a non-organic source of nitrogen) were incorporated in a field soil at two different dosages. All treatments decreased the number of plant-parasitic nematodes, however, doubling the dosage of fertilizer further decreases nematode numbers. Combination of both fertilizer treatments with Compositae plants were the most effective in suppressing plant-parasitic nematode populations. Both fertilizer types significantly increased number of microbivorous (free-living) nematodes relative to untreated control plots; however, Compositae plant species (Tagetes erecta and Helianthus annuus) did not affect the free-living nematode populations. Populations of predatory nematodes (Mononchus aquaticus and Dorylaimus elongatus) were significantly different in all the treatments. Few differences between the two plant species were found for any of the nematode community measurements.
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In a field study conducted at Aligarh, India, Compositae plants were used alone and in combination with two types of fertilizers to investigate their effects on the community of soil nematodes. Organic fertilizer (composted manure – an organic source of nitrogen) and synthetic fertilizer (urea – a non-organic source of nitrogen) were incorporated in a field soil at two different dosages. All treatments decreased the number of plant-parasitic nematodes, however, doubling the dosage of fertilizer further decreases nematode numbers. Combination of both fertilizer treatments with Compositae plants were the most effective in suppressing plant-parasitic nematode populations. Both fertilizer types significantly increased number of microbivorous (free-living) nematodes relative to untreated control plots; however, Compositae plant species (Tagetes erecta and Helianthus annuus) did not affect the free-living nematode populations. Populations of predatory nematodes (Mononchus aquaticus and Dorylaimus elongatus) were significantly different in all the treatments. Few differences between the two plant species were found for any of the nematode community measurements.
In a field study conducted at Aligarh, India, Compositae plants were used alone and in combination with two types of fertilizers to investigate their effects on the community of soil nematodes. Organic fertilizer (composted manure – an organic source of nitrogen) and synthetic fertilizer (urea – a non-organic source of nitrogen) were incorporated in a field soil at two different dosages. All treatments decreased the number of plant-parasitic nematodes, however, doubling the dosage of fertilizer further decreases nematode numbers. Combination of both fertilizer treatments with Compositae plants were the most effective in suppressing plant-parasitic nematode populations. Both fertilizer types significantly increased number of microbivorous (free-living) nematodes relative to untreated control plots; however, Compositae plant species (Tagetes erecta and Helianthus annuus) did not affect the free-living nematode populations. Populations of predatory nematodes (Mononchus aquaticus and Dorylaimus elongatus) were significantly different in all the treatments. Few differences between the two plant species were found for any of the nematode community measurements.
Findings
What changed what, as the paper reports it. Grouped by the measured property.
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