Influence of biodigested slurry on rice-gram cultivation

• Published in: Bioresource technology Vol. 41; no. 3; pp. 217 - 221
• Main Authors: Gnanamani, A., Kasturi Bai, R.
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 1992; Elsevier Science
• Subjects: Agronomy. Soil science and plant productions; Biodigested cattle slurry; Biological and medical sciences; dry matter production; Fundamental and applied biological sciences. Psychology; General agronomy. Plant production; gram yield; mineral fertilizer; nutrients uptake; Other nutrients. Amendments. Solid and liquid wastes. Sludges and slurries; paddy grain yield; Soil-plant relationships. Soil fertility. Fertilization. Amendments; Asia; Tamil Nadu; India; gram yield; dry matter production; Biodigested cattle slurry; mineral fertilizer; paddy grain yield; nutrients uptake; Monocotyledones; Soil fertility; Developing countries; Cereal crop; Oryza sativa; Gramineae; Mineral fertilization; Dicotyledones; Biotransformation; Angiospermae; Biological treatment; Biodigested slurry; Ungulata; Bovine; Sewage digester; Tropical crop; NPK fertilizer; Excreta; Clay loam soil; Grain legume; Vertebrata; Mammalia; Leguminosae; Waste reuse; Spermatophyta; Yield; Artiodactyla; Animal waste; Effluent; Vigna mungo; Organic amendment
• ISSN: 0960-8524; 1873-2976
• DOI: 10.1016/0960-8524(92)90005-I

Biodigested cattle slurry at 0, 10, 20, 30 and 40 t/ha and its combinations with mineral fertilizers were studied, along with the respective control, using IR 20 paddy ( Oryza sativa L.) as the test crop in potculture experiments. There was a progressive increase in grain yield with increasing levels of application of slurry and maximum grain yield of 15 g/pot was obtained with slurry at 40 t/ha. The combined application of mineral fertilizer with slurry at the five levels performed better than the separate application of either mineral fertilizer or slurry. Slurry at 40 t/ha plus the recommended amount of NPK, and slurry at 40 t/ha plus the recommended amount of N alone, produced 24 g/pot and 21 g/pot of grain compared with 11·4 g/pot and 13 g/pot in NPK-alone and N-alone treatments, respectively. There was an increase of 70, 80·5 and 80·1% in dry matter production over the control for slurry at 40 t/ha, 40 t/ha + NPK and 40 t/ha + N-alone treatments, respectively. The combined applications also showed maximum nutrient uptake (877·7, 93·5 and 562·3 mg/pot N, P and K at harvesting stage) in slurry at 40 t/ha + NPK treatment. The residual effects of these applications on black gram ( Vigna mungo L.) was tested. There was a significant increase in gram yield in all the slurry treatments. A gram yield of 1·85 g/pot was obtained with slurry at 40 t/ha. The combined application produced the maximum gram production of 2·2 g/pot in 40 t/ha + NPK treatment.