Title: Nitrogen deposition in Casuarina equisetifolia (Forst.) plantation stands in the dry tropics of Sonbhadra, India
Abstract: Periodic variations in the concentration, deposition and canopy impact of different forms of N on annual N deposition through rainfall, throughfall and stemflow in 5 and 8 year old stands of Casuarina equisetifolia were studied. Throughfall and stemflow ranged from 70 to 76% and 5–6% of annual precipitation respectively. The total N deposition by rainfall was 11.1 kg ha−1 year−1, and by throughfall was 13.6 kg ha−1 year−1 and 16.5 kg ha−1 year−1 in 5-year-old and 8-year old plantations, respectively. The quantities of N deposited through stemflow in the two plantations were nearly identical, accounting for 1.6 kg ha−1 year−1. Observations of the monthly deposition of NH4,N, NO3-N, Kjeldahl-N and organic-N revealed that maximum deposition occurred in July and the minimum in September. Organic-N deposition was 17% less (5-year) than the rainwater content. Net deposition of N, as an effect of canopy, was 7–8.7 kg ha−1 year−1, which was added directly to the available nutrient pool of soil.
Publication Year: 1994
Publication Date: 1994-12-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 5
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