Abstract
Several research has proven the role of dairy cattle effluents in improving the growth and yield of some crops. However, its role in supporting the growth and yield of sweet corn, especialy in Inceptisols, has not been reported. The study aims to determine the effect of dairy cattle effluents on growth and yield of sweet corn in Inceptisols. The pot study was conducted in a greenhouse of the Assessment Institute for Agriculture Technology of Jakarta. The treatments were fertilization using dairy cattle effluents (without dilution, dilution with water 1:1 and 1:2), a mixture of Urea, SP-36 and KCl (NPK), and without fertilizer. The experimental design was a completely randomized design with five replications. Compared to a without fertilizer treatment, dairy cattle effluents were significantly increased plant height (114%), leaf number (136%), cob weight (131%), cob length (124%), and cob diameters (128%). Base on cob weight, relative agronomic effectiveness (RAE) of dairy cattle effluents reached 38.4% (without dilution), 47.5% (dilution with water 1:1), and 62.1% (dilution with water 1:2). Keywords: Dairy cattle effluents, fertilizer, sweet corn
Highlights
Most of reclaimed tidal lowland area in South Sumatra is located at the east coast
The potential cropping pattern at C-typhology land was rice-corn based on water availability in land
Water retention in tertiary channel was the main option in water table control in this area
Summary
Most of reclaimed tidal lowland area in South Sumatra is located at the east coast. The land in this area is characterized by sulphate acid layers either in the potential or actual form. Reclaimed tidal lowland area of Delta Saleh is classified as potential sulphate acid land. Rice production level in this area was in average of 2.5-3.0 Mg ha-1 and cropping index was once per year (Imanudin et al 2004). This low production was related to water status heterogenity in the farm at tertiary blocks. Water availability in swamp area is directly related to crop evapotranspiration requiremenet, and to dynamic of soil fertility status (Imanudin and Susanto 2007)
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