Integrating Effects of Applied Zn with Organic Amendments for Enhanced Maize and Wheat Yields at Two Diverse Calcareous Soils
Year 2017,
Volume: 4 Issue: 2, 179 - 188, 21.04.2017
Abida Saleem
Sajida Perveen
Dost Muhammad
Muhammad Jamal Khan
Maria Mussarat
Nasrullah Muhammad
İhtesham Kaleem
Abdul Wahıd
Abstract
Organic amendments need different management
strategies and integration with chemical fertilizers for maximum benefits. The influence of
various organic amendments in Zn nutrition was evaluated in two diverse
calcareous soils. Amendments including FYM, PM and BC were applied at 20 t ha-1
with 0, 3 and 6 kg Zn ha-1 to maize-wheat cropping system in
low limed Charsadda (6.6 % CaCO3) and high limed Peshawar (16.6%
CaCO3) soils. Growth and grain yields of first season maize and
succeeding wheat crop increased with increase in Zn levels and amendments with
relatively higher response in Peshawar than in Charsadda soil that may be
attributed to initially lower fertility status of Peshawar soil. The
application of Zn with amendments also significantly increased the grain Zn and
postharvest soil [Zn] in both soils. Among amendments, PM showed better
performance in increasing crop growth and yields in both locations followed by FYM
in maize but in succeeding wheat the biochar became more effective withstanding
statistically at par to both PM and FYM. This increasing promising effect of BC
with time reveals its slower but long lasting effects in crop production. FYM
and BC required relatively higher amounts of Zn than PM and as such integration
of 3 kg Zn ha-1 with PM, and 6 kg Zn ha-1 with FYM and BC
is recommended for enhanced crop production. Furthermore more, the application
of BC is recommended for long lasting results but its initial higher cost may
hinder its application at large scale.
References
- Adhikari, B.H., Gauli, R.C., Bahadur, B.C.B. 2001. Effects of manures and fertilizers on the grain production of maize in rotation with cowpea in an acid soil. Proc. Maize Symp. Nepal, pp. 160-169.
- Adiloglu, S., Saglam, M.T. 2005. The effect of increasing nitrogen doses on the Zinc content of maize plant in the soils of different properties. Pak. J. Biol. Sci., 8: 905-909.
- Ahmad, S.I., Abbasi, M.K., Rasool, G. 2002. Integrated plant nutrition system in wheat under rain fed conditions of Rawalakot, Azad Jammu and Kashmir. Pak. J. Soil Sci., 21: 79-86.
- Akinrinde, E.A., Olubakin, O.A., Omotoso, S.O., Ahmed, A.A. 2006. Influence of zinc fertilizer, poultry manure and application levels on the performance of sweet corn. Agric. J. 1: 96-103.
- Ali, M.I., Bhuiya, E.H., Razzaque, A.H.M. 1983. Effect of N, P, K, S and Zn fertilizer on the growth and yield of wheat. Bangladesh J. Soil Sci., 19: 43-50.
- Al-Kaysi, S.Ch. 2000. Effects of physical and chemical properties of carbonate minerals in some Iraqi soils in zinc fixation. 1: Properties of carbonate minerals. Iraqi J. Agric. Sci. 30: 53-72. (in Arabic).
- Al-Tamimi, R.A. 2006. Zinc sorption by some Torrifluvents of sub-Saharian region south of Libya. Emirates J. Agric. Sci. 18: 1-10.
- Arnesen, A.K.M., Singh, B.R. 1998. Plant uptake and DTPA extractability of Cd, Cu, Ni and Zn in Norwegian alum shale soil as affected by previous addition of dairy and pig manures and peat. Can. J. Soil Sci. 78: 531-539.
- Baker, D.E., Amacher, M.C. 1982. Nickel, Copper, Zinc, and Cadmium. In A.L. Page., R.H. Miller and D.R. Keeney (Ed.) Method of Soil Analysis. 2: Chemical and Microbiological Properties 2nd Ed., pp. 323-334. Soil Science Society of America, Inc. Madison, WI, USA.
- Baker, D.E., Suhr, N.H. 1982 Atomic absorption and flame emission spectrometry. In Methods of Soil Analysis. Ed. pp. 13–26. American Society of Agronomy, Madison, Wisconsin, USA.
- Benton, J.J., Wolf, B., Mills, H.A. 1991. Plant Analysis Handbook. Athens GA: Micro-Macro Pub., Inc.
- Bremner, J.M. 1996. Nitrogen Total. In Methods of Soil Analysis, Part 3, Chemical Methods, 3rd edn. pp. 1035-1122. SSSA Book Ser. 5. Soil Science Society of America and American Society of Agronomy, Madison, Wisconsin.
- Butt, A.H., Khan, M.A., Yousaf, M. 1995. Response of wheat to soil application of zinc and boron under rain fed conditions .Pak. J. Soil Sci., 10: 66- 68.
- Cakmak, O., Ozturk, L., Karanlik, S. 2001. Tolerance of 65 durum wheat genotypes to zinc deficiency in a calcareous soil. Journal of Plant Nutrition, 24(11): 1831-1847.
- Cakmak, I. 2002 Plant nutrition research: Priorities to meet human needs for food in sustainable ways. Plant Soil. 247: 3-24.
- Dilshad, M.D., Lone, M.I., Jilani, G., Malik, M.A., Yousaf, M., Khalid, R., Shamim, F. 2010. Integrated plant nutrient management (IPNM) on maize under rainfed condition. Pak. J. Nutr., 9: 896-901.
- Dixit, K.G., Gupta, B.R. 2000. Effect of farmyard manure, chemical and bio fertilizer on yield and quality of rice (Oryza sativa L.) and soil properties. J. Indian Soc. Soil. Sci. 48(4): 773-780.
- Ezzati, M., Loez, A.D., Rodgers, A., Hoorn, S.V., Murray, C.J.L. 2002. Selected major risk factors and global and regional burden of diseases. Lancet 360: 1347-1360.
- Gondek, K., Mazur, B.F. 2005. The effect of mineral treatment and the amendments by organic and organomineral fertilizers on crop yield, plant nutrient status and soil properties. Plant Soil Environ., 51: 34-45.
- Goswami, 2007. Response of wheat (Triticum aestivum) to nitrogen and zinc application. Ann. Agric. Res. New Series 28(1): 90-91.
- Gramss, G., Voigt, K., Bublitz, F., Bergmann, H. 2003. Increased solubility of (heavy) metals in soil during microbial transformations of sucrose and casein amendments. J. Basic Microbiol. 43(6): 483-498.
- Hadi, A., Taran, S.A., Azeem, A., Saeed, Z., Aslam, A. 1997. Wheat response to zinc application in rice growing area of Balochistan. Pakistan J. Soil Sci., 13: 25-27.
- Hotz, C., Brown, K.H. 2004. Assessment of the risk of zinc deficiency in populations and options for its control. Food Nutr. Bull. 25(1): 91-204.
- Jain, N.K., Dahama, A.K. 2007. Effect of phosphorus and zinc on yield, nutrient uptake and quality of wheat (Triticum aestivum L.) Indian J. Agric. Sci. 77: 310-313.
- Karimian, N., Moafpouryan, G.R. 1999. Zinc adsorption characteristics of selected calcareous soils of Iran and their relationship with soil properties. Commun. Soil Sci. Plant Anal. 30: 1721-1731.
- Khan, N., Shah, Z., Ahmed, N., Ahmad, S., Mehmood, N. 2013. Effect of integrated use of biochar, FYM and nitrogen fertilizer on soil organic fertility. J. Pure Appl. Bio. 2(2): 42-47.
- Khoshgoftarmanesh, A.H., Kalbasi, M. 2002. Effect of municipal waste leachate on soil properties and growth and yield of rice. Communication. Soil Sci. Plant Analysis. 33 (13 and 14): 2011-2020.
- Khush, G.S. 2001. Challenges for meeting the global food and nutrient needs in the new millennium, Proc. Nutr. Soc. 60: 15-26.
- Kiekens, L. 1995. Zinc: In B.J. Alloway (ed.) Heavy Metals in Soils. Chapman & Hall, pp. 284-303, London.
Lehmann, J. 2007. Bio-energy in the black. Frontiers in Eco and the Environ. 5: 381-387.
- Lehmann, J., Solomon, D., Kinyangi, J., Dathe, L., Wirick, S., Jacobsen, C. 2008. Spatial complexity of soil organic matter forms at nanometer scales. Nature Geoscience. 1: 238-242.
- Lindsay, W.L. 1974. Role of Chelation in Micronutrient Availability: In E.W. Carson (ed.), The Plant Root and Its Environment. Univ. of Virginia Press, Charlottesville.
- Lopes, A. S., 1980. Micronutrients in e soils of the tropics as constraints to food production. In Priorities for Alleviating Soil Related Constraints to Food Production in the Tropics, pp. 277-298. Intern. Rice. Res. Inst.
- Math, S.K.N., Trivedi, B.S. 2001. Effect of organic amendments and zinc on the yield content and uptake of zinc by wheat and maize grown in succession. Madras Agri. J., 87: 108-113.
- Moraghan, J.T., Mascagni, H.J. 1991. Environmental and soil factors affecting micronutrient deficiencies and toxicities. pp. 371-425. In: J. J.
- Nahm, K.H. 2003. Evaluation of the Nitrogen Content in Poultry Manure. Worlds Poultry.
- Nelson, D.W., Sommers, L.E. 1982. Total carbon, organic carbon and organic matter. pp. 570-571. In: Methods of Soil Analysis, Part 2: Chemical and Microbiological Properties. Agronomia. Mongr. 9; Soil Science Society of America: Madison, WI.
- Osman, A.G., Elaziz, F.I.A., El Hassan, G.A. 2010. Effects of biological and mineral fertilization on yield, chemical composition and physical characteristics of faba bean (Vicia faba L.) cultivar seleim. Pak. J. Nutr., 9: 703-708.
- Prasad, B., Singh, A.P. and Singh, M.K. 1984. Effect of poultry manure as source of zinc, iron, and as a complexing agent on Zn and Fe availability and crop yield in calcareous soils. Ind. Soc. Soil Sci., 32: 519-521.
- Ranjbar, G.A. and Bahmaniar, M.A. 2007. Effects of soil and foliar application of Zn fertilizer on yield and growth characteristics of bread wheat cultivars. Asian J. Plant Sci. 6(6): 1000-1005.
- Rhoades, J.D. 1996. Salinity, electrical conductivity and total dissolved solids. In D.L. Sparks (ed.) Methods of Soil Analysis. Part 3. pp. 417-435. Am. Soc. Agron. Madison, WI, USA.
- Selvakumari, G., Baskar, M., Jayanthi, D. and Mathan, K.K. 2000. Effect of integration of fly ash with fertilizers and organic manures on nutrient availability, yield and nutrient uptake of rice. J. Indian Soc. Soil Sci. 48(2): 268-278.
- Sharma, S.P. and Subehia, S.K. 2003. Effect of twenty five years of fertilizers use on maize and wheat yields and quality of an acidic soil in the western Himalayas. Exp. Agri., 39: 55-64.
- Sial, R.A., Chuadhary, E.H., Hussain, S. and Naveed, M. 2007. Effect of organic manures and chemical fertilizers on grain yield of maize in rainfed area. Soil and Environ. 26(2): 130-133.
- Singh, O., Kumar, S. and Awanish, 2012. Productivity and profitability of rice as influence by high fertility levels and their residual effect on wheat. Ind. J. Agron. 57(2): 143-147.
- Singh, S.P., Singh, M.K. and Randhawa, N.S. 1979. Effect of Zinc amended poultry manure and zinc sulphate on the growth and uptake of zinc by corn (Zea mays L.). Plant Soil. 52: 501-505.
- Singh, B., Natesan, S.K.A., Singh, B.K. and Usha, K. 2005. Improving zinc efficiency of cereals under zinc deficiency. Current Sci. 88 (1-10): 36-44.
- Sinha, M.K. and Prasad, B. 1977. Effect of chelating agents on kinetics of diffusion of zinc to a stimulated root system and its uptake by wheat. Plant Soil. 48: 399-612.
- Soltanpour, P.N. and Schwab, A.P. 1977. A new soil test for macro and micro nutrients in alkaline soils. Commun. Soil Sci. Plant Anal. 8: 195-207.
- Soltanpour, P.N. 1985. Use of ammonium bicarbonate DTPA soil test to evaluate elemental availability and toxicity. Commun. Soil Sci. Plant Anal. 16(3): 323-338.
- Steel, R.G.D., Torrie, J.H. 1984. Principles and procedures of statistics (2nd Ed.). MC Graw Hill Book Co; Singhapore pp. 172-177.
- Steiner, C., Teixeira, W., Lehmann, J., Nehls, T., Vasconcelos de Macedo, J., Blum, W., Zech, W. 2007. Long term effects of manure, charcoal and mineral fertilization on crop production and fertility on a highly weathered Central Amazonian upland soil. Plant and Soil. 291: 1-2.
- Swift, R.S. 2001. Sequestration of carbon by soil. Soil Science. 166: 858-871.
- Tahir, M., Fiaz, N., Nadeem, M.A., Khalid, F., Ali, M. 2009. Effect of different chelated zinc sources on the growth and yield of maize (Zea mays L.). Soil Environ., 28: 179-183.
- Tarkalson, D.D., Jolley, V.D., Robbins, C.W., Terry, R.E. 1998. Mycorrhizal colonization and nutrient uptake of dry bean in manure and compost manure treated subsoil and untreated topsoil and subsoil. J. Plant Nutr. 21: 1867-1878.
- Thomas, G.W., 1996. Soil pH and soil acidity. In D.L. Sparks (ed.) Methods of soil analysis. Part 3. Am. Soc. Agron., pp. 475-490. Madison, WI, USA.
- Uzoma, K.C., Inoue, M., Andry, H., Fujimaki, H., Zahoor, A., Nihihara, E. 2011. Effect of cow manure biochar on maize productivity under sandy soil condition. Soil Use and Mgt. 27: 205-212.
Integrating Effects of Applied Zn with Organic Amendments for Enhanced Maize and Wheat Yields at Two Diverse Calcareous Soils
Year 2017,
Volume: 4 Issue: 2, 179 - 188, 21.04.2017
Abida Saleem
Sajida Perveen
Dost Muhammad
Muhammad Jamal Khan
Maria Mussarat
Nasrullah Muhammad
İhtesham Kaleem
Abdul Wahıd
Abstract
Organic amendments need different management
strategies and integration with chemical fertilizers for maximum benefits. The influence of
various organic amendments in Zn nutrition was evaluated in two diverse
calcareous soils. Amendments including FYM, PM and BC were applied at 20 t ha-1
with 0, 3 and 6 kg Zn ha-1 to maize-wheat cropping system in
low limed Charsadda (6.6 % CaCO3) and high limed Peshawar (16.6%
CaCO3) soils. Growth and grain yields of first season maize and
succeeding wheat crop increased with increase in Zn levels and amendments with
relatively higher response in Peshawar than in Charsadda soil that may be
attributed to initially lower fertility status of Peshawar soil. The
application of Zn with amendments also significantly increased the grain Zn and
postharvest soil [Zn] in both soils. Among amendments, PM showed better
performance in increasing crop growth and yields in both locations followed by FYM
in maize but in succeeding wheat the biochar became more effective withstanding
statistically at par to both PM and FYM. This increasing promising effect of BC
with time reveals its slower but long lasting effects in crop production. FYM
and BC required relatively higher amounts of Zn than PM and as such integration
of 3 kg Zn ha-1 with PM, and 6 kg Zn ha-1 with FYM and BC
is recommended for enhanced crop production. Furthermore more, the application
of BC is recommended for long lasting results but its initial higher cost may
hinder its application at large scale.
References
- Adhikari, B.H., Gauli, R.C., Bahadur, B.C.B. 2001. Effects of manures and fertilizers on the grain production of maize in rotation with cowpea in an acid soil. Proc. Maize Symp. Nepal, pp. 160-169.
- Adiloglu, S., Saglam, M.T. 2005. The effect of increasing nitrogen doses on the Zinc content of maize plant in the soils of different properties. Pak. J. Biol. Sci., 8: 905-909.
- Ahmad, S.I., Abbasi, M.K., Rasool, G. 2002. Integrated plant nutrition system in wheat under rain fed conditions of Rawalakot, Azad Jammu and Kashmir. Pak. J. Soil Sci., 21: 79-86.
- Akinrinde, E.A., Olubakin, O.A., Omotoso, S.O., Ahmed, A.A. 2006. Influence of zinc fertilizer, poultry manure and application levels on the performance of sweet corn. Agric. J. 1: 96-103.
- Ali, M.I., Bhuiya, E.H., Razzaque, A.H.M. 1983. Effect of N, P, K, S and Zn fertilizer on the growth and yield of wheat. Bangladesh J. Soil Sci., 19: 43-50.
- Al-Kaysi, S.Ch. 2000. Effects of physical and chemical properties of carbonate minerals in some Iraqi soils in zinc fixation. 1: Properties of carbonate minerals. Iraqi J. Agric. Sci. 30: 53-72. (in Arabic).
- Al-Tamimi, R.A. 2006. Zinc sorption by some Torrifluvents of sub-Saharian region south of Libya. Emirates J. Agric. Sci. 18: 1-10.
- Arnesen, A.K.M., Singh, B.R. 1998. Plant uptake and DTPA extractability of Cd, Cu, Ni and Zn in Norwegian alum shale soil as affected by previous addition of dairy and pig manures and peat. Can. J. Soil Sci. 78: 531-539.
- Baker, D.E., Amacher, M.C. 1982. Nickel, Copper, Zinc, and Cadmium. In A.L. Page., R.H. Miller and D.R. Keeney (Ed.) Method of Soil Analysis. 2: Chemical and Microbiological Properties 2nd Ed., pp. 323-334. Soil Science Society of America, Inc. Madison, WI, USA.
- Baker, D.E., Suhr, N.H. 1982 Atomic absorption and flame emission spectrometry. In Methods of Soil Analysis. Ed. pp. 13–26. American Society of Agronomy, Madison, Wisconsin, USA.
- Benton, J.J., Wolf, B., Mills, H.A. 1991. Plant Analysis Handbook. Athens GA: Micro-Macro Pub., Inc.
- Bremner, J.M. 1996. Nitrogen Total. In Methods of Soil Analysis, Part 3, Chemical Methods, 3rd edn. pp. 1035-1122. SSSA Book Ser. 5. Soil Science Society of America and American Society of Agronomy, Madison, Wisconsin.
- Butt, A.H., Khan, M.A., Yousaf, M. 1995. Response of wheat to soil application of zinc and boron under rain fed conditions .Pak. J. Soil Sci., 10: 66- 68.
- Cakmak, O., Ozturk, L., Karanlik, S. 2001. Tolerance of 65 durum wheat genotypes to zinc deficiency in a calcareous soil. Journal of Plant Nutrition, 24(11): 1831-1847.
- Cakmak, I. 2002 Plant nutrition research: Priorities to meet human needs for food in sustainable ways. Plant Soil. 247: 3-24.
- Dilshad, M.D., Lone, M.I., Jilani, G., Malik, M.A., Yousaf, M., Khalid, R., Shamim, F. 2010. Integrated plant nutrient management (IPNM) on maize under rainfed condition. Pak. J. Nutr., 9: 896-901.
- Dixit, K.G., Gupta, B.R. 2000. Effect of farmyard manure, chemical and bio fertilizer on yield and quality of rice (Oryza sativa L.) and soil properties. J. Indian Soc. Soil. Sci. 48(4): 773-780.
- Ezzati, M., Loez, A.D., Rodgers, A., Hoorn, S.V., Murray, C.J.L. 2002. Selected major risk factors and global and regional burden of diseases. Lancet 360: 1347-1360.
- Gondek, K., Mazur, B.F. 2005. The effect of mineral treatment and the amendments by organic and organomineral fertilizers on crop yield, plant nutrient status and soil properties. Plant Soil Environ., 51: 34-45.
- Goswami, 2007. Response of wheat (Triticum aestivum) to nitrogen and zinc application. Ann. Agric. Res. New Series 28(1): 90-91.
- Gramss, G., Voigt, K., Bublitz, F., Bergmann, H. 2003. Increased solubility of (heavy) metals in soil during microbial transformations of sucrose and casein amendments. J. Basic Microbiol. 43(6): 483-498.
- Hadi, A., Taran, S.A., Azeem, A., Saeed, Z., Aslam, A. 1997. Wheat response to zinc application in rice growing area of Balochistan. Pakistan J. Soil Sci., 13: 25-27.
- Hotz, C., Brown, K.H. 2004. Assessment of the risk of zinc deficiency in populations and options for its control. Food Nutr. Bull. 25(1): 91-204.
- Jain, N.K., Dahama, A.K. 2007. Effect of phosphorus and zinc on yield, nutrient uptake and quality of wheat (Triticum aestivum L.) Indian J. Agric. Sci. 77: 310-313.
- Karimian, N., Moafpouryan, G.R. 1999. Zinc adsorption characteristics of selected calcareous soils of Iran and their relationship with soil properties. Commun. Soil Sci. Plant Anal. 30: 1721-1731.
- Khan, N., Shah, Z., Ahmed, N., Ahmad, S., Mehmood, N. 2013. Effect of integrated use of biochar, FYM and nitrogen fertilizer on soil organic fertility. J. Pure Appl. Bio. 2(2): 42-47.
- Khoshgoftarmanesh, A.H., Kalbasi, M. 2002. Effect of municipal waste leachate on soil properties and growth and yield of rice. Communication. Soil Sci. Plant Analysis. 33 (13 and 14): 2011-2020.
- Khush, G.S. 2001. Challenges for meeting the global food and nutrient needs in the new millennium, Proc. Nutr. Soc. 60: 15-26.
- Kiekens, L. 1995. Zinc: In B.J. Alloway (ed.) Heavy Metals in Soils. Chapman & Hall, pp. 284-303, London.
Lehmann, J. 2007. Bio-energy in the black. Frontiers in Eco and the Environ. 5: 381-387.
- Lehmann, J., Solomon, D., Kinyangi, J., Dathe, L., Wirick, S., Jacobsen, C. 2008. Spatial complexity of soil organic matter forms at nanometer scales. Nature Geoscience. 1: 238-242.
- Lindsay, W.L. 1974. Role of Chelation in Micronutrient Availability: In E.W. Carson (ed.), The Plant Root and Its Environment. Univ. of Virginia Press, Charlottesville.
- Lopes, A. S., 1980. Micronutrients in e soils of the tropics as constraints to food production. In Priorities for Alleviating Soil Related Constraints to Food Production in the Tropics, pp. 277-298. Intern. Rice. Res. Inst.
- Math, S.K.N., Trivedi, B.S. 2001. Effect of organic amendments and zinc on the yield content and uptake of zinc by wheat and maize grown in succession. Madras Agri. J., 87: 108-113.
- Moraghan, J.T., Mascagni, H.J. 1991. Environmental and soil factors affecting micronutrient deficiencies and toxicities. pp. 371-425. In: J. J.
- Nahm, K.H. 2003. Evaluation of the Nitrogen Content in Poultry Manure. Worlds Poultry.
- Nelson, D.W., Sommers, L.E. 1982. Total carbon, organic carbon and organic matter. pp. 570-571. In: Methods of Soil Analysis, Part 2: Chemical and Microbiological Properties. Agronomia. Mongr. 9; Soil Science Society of America: Madison, WI.
- Osman, A.G., Elaziz, F.I.A., El Hassan, G.A. 2010. Effects of biological and mineral fertilization on yield, chemical composition and physical characteristics of faba bean (Vicia faba L.) cultivar seleim. Pak. J. Nutr., 9: 703-708.
- Prasad, B., Singh, A.P. and Singh, M.K. 1984. Effect of poultry manure as source of zinc, iron, and as a complexing agent on Zn and Fe availability and crop yield in calcareous soils. Ind. Soc. Soil Sci., 32: 519-521.
- Ranjbar, G.A. and Bahmaniar, M.A. 2007. Effects of soil and foliar application of Zn fertilizer on yield and growth characteristics of bread wheat cultivars. Asian J. Plant Sci. 6(6): 1000-1005.
- Rhoades, J.D. 1996. Salinity, electrical conductivity and total dissolved solids. In D.L. Sparks (ed.) Methods of Soil Analysis. Part 3. pp. 417-435. Am. Soc. Agron. Madison, WI, USA.
- Selvakumari, G., Baskar, M., Jayanthi, D. and Mathan, K.K. 2000. Effect of integration of fly ash with fertilizers and organic manures on nutrient availability, yield and nutrient uptake of rice. J. Indian Soc. Soil Sci. 48(2): 268-278.
- Sharma, S.P. and Subehia, S.K. 2003. Effect of twenty five years of fertilizers use on maize and wheat yields and quality of an acidic soil in the western Himalayas. Exp. Agri., 39: 55-64.
- Sial, R.A., Chuadhary, E.H., Hussain, S. and Naveed, M. 2007. Effect of organic manures and chemical fertilizers on grain yield of maize in rainfed area. Soil and Environ. 26(2): 130-133.
- Singh, O., Kumar, S. and Awanish, 2012. Productivity and profitability of rice as influence by high fertility levels and their residual effect on wheat. Ind. J. Agron. 57(2): 143-147.
- Singh, S.P., Singh, M.K. and Randhawa, N.S. 1979. Effect of Zinc amended poultry manure and zinc sulphate on the growth and uptake of zinc by corn (Zea mays L.). Plant Soil. 52: 501-505.
- Singh, B., Natesan, S.K.A., Singh, B.K. and Usha, K. 2005. Improving zinc efficiency of cereals under zinc deficiency. Current Sci. 88 (1-10): 36-44.
- Sinha, M.K. and Prasad, B. 1977. Effect of chelating agents on kinetics of diffusion of zinc to a stimulated root system and its uptake by wheat. Plant Soil. 48: 399-612.
- Soltanpour, P.N. and Schwab, A.P. 1977. A new soil test for macro and micro nutrients in alkaline soils. Commun. Soil Sci. Plant Anal. 8: 195-207.
- Soltanpour, P.N. 1985. Use of ammonium bicarbonate DTPA soil test to evaluate elemental availability and toxicity. Commun. Soil Sci. Plant Anal. 16(3): 323-338.
- Steel, R.G.D., Torrie, J.H. 1984. Principles and procedures of statistics (2nd Ed.). MC Graw Hill Book Co; Singhapore pp. 172-177.
- Steiner, C., Teixeira, W., Lehmann, J., Nehls, T., Vasconcelos de Macedo, J., Blum, W., Zech, W. 2007. Long term effects of manure, charcoal and mineral fertilization on crop production and fertility on a highly weathered Central Amazonian upland soil. Plant and Soil. 291: 1-2.
- Swift, R.S. 2001. Sequestration of carbon by soil. Soil Science. 166: 858-871.
- Tahir, M., Fiaz, N., Nadeem, M.A., Khalid, F., Ali, M. 2009. Effect of different chelated zinc sources on the growth and yield of maize (Zea mays L.). Soil Environ., 28: 179-183.
- Tarkalson, D.D., Jolley, V.D., Robbins, C.W., Terry, R.E. 1998. Mycorrhizal colonization and nutrient uptake of dry bean in manure and compost manure treated subsoil and untreated topsoil and subsoil. J. Plant Nutr. 21: 1867-1878.
- Thomas, G.W., 1996. Soil pH and soil acidity. In D.L. Sparks (ed.) Methods of soil analysis. Part 3. Am. Soc. Agron., pp. 475-490. Madison, WI, USA.
- Uzoma, K.C., Inoue, M., Andry, H., Fujimaki, H., Zahoor, A., Nihihara, E. 2011. Effect of cow manure biochar on maize productivity under sandy soil condition. Soil Use and Mgt. 27: 205-212.