title: Influence of conjunctive use of coffee effluent and fresh water on performance of robusta coffee and soil properties.
abstract: A field experiment was conducted to study the influence of treated coffee effluent irrigation on performance of established robusta coffee, nutrient contribution and microbial activities in the soil. The results revealed that the field irrigated with coffee effluent from aerobic tank having COD of 1009 ppm, did not affect the yield of clean coffee (1309 kg/ha) and it was statistically similar (on par) with the plots irrigated with fresh water (1310 kg/ha) with respect to clean coffee yield. Effluent irrigation increased significantly the population bacteria, yeast, fungi, actinomycetes and PSB (122, 52, 12, 34 and 6 x 104/g respectively)) in the soil compared to the soil irrigated with fresh water (87, 22, 5, 24 and 2 x 10(4)/g respectively). The organic carbon (2.60%), available nutrients in the soil like P (57.2 kg/ha), K (401.6 kg/ha, Ca (695.3 ppm), S (5.3 ppm),Cu (4.09 ppm) and Zn(4.78 ppm) were also increased due to effluent irrigation compared to fresh water irrigation. Thus analysis of coffee effluent for major and minor plant nutrients content revealed its potential as source of nutrients and water for plant growth.
authors.affiliation: Department of Agronomy, University of Agricultural Sciences, Dharwad-580 005, Karnataka, India. salakinkop@gmail.com
authors.forename: S R
authors.initials: SR
authors.lastname: Salakinkop
authors.forename: P
authors.initials: P
authors.lastname: Shivaprasad
mesh_terms: D040503:Coffea / Q000254:growth & development*; D003069:Coffee; D018556:Crops, Agricultural / Q000254:growth & development; D007220:Industrial Waste / Q000032:analysis; D059027:Recycling; D012987:Soil / Q000032:analysis; D014876:Water Pollution / Q000517:prevention & control*
chemical_list: D003069:Coffee; D007220:Industrial Waste; D012987:Soil