Title: Dry Matter Yield and Nutrients Uptake of Sorghum×Sudangrass Hybrid Grown with Different Rates of Livestock Manure Compost
Abstract:To investigate the growth and nutrient uptake response of sorghum×sudangrass (S×S) hybrid to different rate of livestock manure compost, a field experiment was conducted in the experimental grassland ...To investigate the growth and nutrient uptake response of sorghum×sudangrass (S×S) hybrid to different rate of livestock manure compost, a field experiment was conducted in the experimental grassland of Chonnam National University. Six treatments were laid out in a randomized block design with triplicates; control (no input), synthetic fertilizer (20 g N m -2 and 20 g P₂O 5 m -2 ), compost 1 (3.4 g N m -2 and 3.6 g P₂O 5 m -2 ), compost 2 (6.8 g N m -2 and 7.2 g P₂O 5 m -2 ), compost 4 (13.4 g N m -2 and 14.4 g P₂O 5 m -2 ), and compost 6 (20.2 g N m -2 and 21.6 g P₂O 5 m -2 ). Ninety days after treatment, above-ground parts of the plants were harvested and measured for dry matter yield (DMY) and amounts of nutrients (N and P) uptake. Synthetic fertilizer application achieved the greatest DMY (2.4 kg m -2 ) and nutrient uptake (38.3 g N m-2 and 15.3 g P₂O 5 m -2 ). Increasing compost application rate tended to enhance DMY accumulation and nutrient uptake (P -2 ) and 6 (1.8 kg m -2 ) treatments were not different. Therefore, it was suggested that application compost alone may not achieve DMY of S×S hybrid compatible to synthetic fertilizer application. As nutrient uptake efficiency data showed that availability of compost P could be better than SF, it might be a strategy to apply compost as P source with supplementary N application such as liquid manure, SF or green manure if necessary considering availabilityof N input and the yield goals.Read More
Publication Year: 2010
Publication Date: 2010-08-01
Language: en
Type: article
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Cited By Count: 8
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