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Research Articles

Improving Nutrient and Water-Holding Capacity in Sandy Regosol by Applying Locally Available Amendments

Authors:

Punitha Premanandarajah ,

Faculty ofAgriculture, Eastern University, LK
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Komathy Prapagar

Faculty ofAgriculture, Eastern University, LK
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Abstract

A pot experiment was carried out at the agronomy farm Eastern University, Chenkalady, Batticaloa, to study the impact of locally available organic manures on the nutrient and water holding capacity of sandy regosol. Three organic sources integrated with different rates of recommended chemical fertilizer and were evaluated with sole recommended chemical fertilizer. Twelve treatments including integrated organic manures with chemical fertilizers at different rates, sole organic manure treatment, sole chemical fertilizer treatment at recommended level and at half the recommended level and no fertilizer control. Completely Randomized Design with 3 replicates was used as layout. Soil analysis for available soil nitrogen content, moisture retention, cation exchange capacity and organic matter content were carried out at planting (red onion), just before top dressing and at the time of harvest.

Integration of organic manure with chemical fertilizer favorably influenced nitrogen availability in soil. Among the organic manures poultry manure had the greatest influence on soil available nitrogen : content. Organic manures increased the soil moisture retention capacity, with tank silt (Organic deposit in dry mud) ranking first. Soil cation exchange capacity was favorably influenced by organic manure application. Cation exchange capacity was higher in tank silt treatment than other organic sources. Cation exchange capacily was increased from planting stage to just before top dressing and decreased at harvest stage. The soil organic matter content also followed a similar trend.

AGRIEAST 2009 (8) p.30-38

How to Cite: Premanandarajah, P. & Prapagar, K., (2016). Improving Nutrient and Water-Holding Capacity in Sandy Regosol by Applying Locally Available Amendments. AGRIEAST: Journal of Agricultural Sciences. 8, pp.30–38. DOI: http://doi.org/10.4038/agrieast.v8i0.9
Published on 02 Jan 2016.
Peer Reviewed

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