References
- Weiland , P. 2010 . Biogas production: Current state and perspectives . Appl. Microbiol. Biotechnol. , 85 : 849 – 860 .
- Kurchania , A.K. , Panwar , N.L. and Pagar , S.D. 2010 . Design and performance evaluation of biogas stove for community cooking application . Int. J. Sustainable Energy , 29 : 16 – 123 .
- Mähnert , P. and Linke , B. 2009 . Kinetic study of biogas production from energy crops and animal waste slurry: Effect of organic loading rate and reactor size . Environ. Technol. , 30 : 93 – 99 .
- Matsunaka , T. , Sawamoto , T. , Ishimura , H. , Takakura , K. and Takekawa , A. 2006 . Efficient use of digested cattle slurry from biogas plant with respect to nitrogen recycling in grassland . Int. Congr. Ser. , 1293 : 242 – 252 .
- Demirbas , A. 2006 . Biogas potential of manure and straw mixtures . Energy Sources Part A , 28 : 71 – 78 .
- Yadvika , Sreekrishnan , T.R. , Santosh , S. and Kohli , S. 2007 . Effect of HRT and slurry concentration on biogas production in cattle dung based anaerobic bioreactors . Environ. Technol. , 28 : 433 – 442 .
- Smith , J.L. and Elliot , L.F. 1990 . Tillage and residue management effects on organic matter dynamics in semi‐arid regions . Adv. Soil Sci. , 13 : 69 – 88 .
- Prasad , R. and Power , J.F. 1991 . Crop residue management . Adv. Soil Sci. , 15 : 205 – 251 .
- Pathak , H. , Kushwaha , J.S. and Jain , M.C. 1992 . Evaluation of manurial value of biogas spent slurry composted with dry mango leaves, wheat straw and rock phosphate on wheat crop . Indian Soc. Soil Sci. , 40 : 753 – 757 .
- Garg , R.N. , Pathak , H. , Das , D.K. and Tomar , R.K. 2005 . Use of flyash and biogas slurry for improving wheat yield and physical properties of soil . Environ. Monit. Assess. , 107 : 1 – 9 .
- Liu , W.K. , Du , L.F. and Yang , Q.C. 2008 . Biogas slurry added amino acids decreased nitrate concentrations of lettuce in sand culture . Acta Agric. Scand. Sect. B , 58 : 1 – 5 .
- Shi , Y.‐J. , Lu , Y.‐L. and Liang , D. 2002 . Application of anaerobic digested residues on safe food production . J. Environ. Sci. Health Part A , 37 : 725 – 735 .
- Walkley , A. and Armstrong Black , I. 1934 . An examination of the Degtjareff method for determining soil organic matter and prepared modification of the chronic acid titration method . Soil Sci. , 37 : 29 – 38 .
- Jackson , M.L. 1975 . Soil Chemical Analysis , New Delhi : Prentice Hall .
- Olsen , S.R. , Cole , C.V. , Watanabe , F.S. and Dean , L.A. 1954 . Estimation of available phosphorus in soils by extraction with sodium bicarbonate , Washington D.C. : US Department of Agriculture .
- Simard , R.R. 1993 . “ Ammonium acetate extractable elements ” . In Soil Sampling and Methods of Analysis Edited by: Martin , R. and Carter , S. 39 – 43 . Lewis, Boca Raton, FL
- Hakimuddin . 1985 . Design of a tool for injecting organic waste slurry in soil , Sukhadia University . M.E. thesis
- Donald , C.M. and Hamblin , J. 1976 . The biological yields and harvest index of cereals as agronomic and plant breeding criteria . Adv. Agron. , 28 : 361 – 404 .
- Yu , F.‐B. , Luo , X.‐P. , Song , C.‐F. , Zhang , M.‐X. and Shan , S.‐Dao . 2010 . Concentrated biogas slurry enhanced soil fertility and tomato quality . Acta Agric. Scand. Sect. B , 60 : 262 – 268 .