Effect of presowing magnetic treatment on properties of pea
The pea seeds were exposed to full-wave rectified sinusoidal magnetic fields. The effects of electromagnetic treatment on seedling growth and chlorophyll contents and have been investigated. Seed were sown after magnetic field treatment according to ISTA under controlled laboratory conditions. The magnetic filed treatment of seeds increased the growth significantly (P<0.05), while the increment in contents of chlorophyll have been found non significant (P<0.05). The shoot length, root length, root dry mass, shoot dry mass, fresh root mass and fresh shoot mass increased up to 140.5, 218.2, and 104, 263.6, 74.5, 91.3%, respectively. The result suggested that magnetic field could be used to enhance the growth in pea plant.
Alef K., 1995. Dehydrogenase activity. In: Methods in Applied Soil Microbiology and Biochemistry (Eds K. Alef, P. Nannipieri). London, Academic Press, UK.
Alef K. and Nannipieri P., 1995. Protease activity. In: Methods in Applied Soil Microbiology and Biochemistry (Eds K. Alef, P. Nannipieri). London, Academic Press, UK.
Brzezińska M., Stępniewski W., Stępniewska Z., Przywara G., and Włodarczyk T., 2001. Effect of oxygen deficiency on soil dehydrogenase activity in a pot experiment with triticale cv. Jago vegetation. Int. Agrophysics, 15, 145-149.
Buck C., Langmaack M., and Schrader S., 2000. Influence of mulch and soil compaction on earthworm cast properties. Appl. Soil Ecol., 14, 223-229.
Dick R. P., Myrold D. D., and Kerle E. A., 1988. Microbial biomass and soil enzyme activities in compacted and rehabilitated skid trail soils. Soil Sci. Soc. Am. J., 52, 512-516.
Entry J. A., Reeves D. W., Backman C. B., and Raper R. L., 1996. Influence of wheel traffic and tillage on microbial biomass, residue decomposition and extractable nutrients in a Coastal Plain Soil. Plant Soil, 180, 129-137.
Gajda A., 2010. Microbial activity and particulate organic matter content in soils with different tillage system use. Int. Agrophys., 24, 129-137.
Hamza M. A. and Anderson W. K., 2005. Soil compaction in cropping systems: A review of the nature, causes and possible solutions. Soil Till. Res., 82, 121-145.
Ikeda K., Toyota K., and Kimura M., 1997. Effects of soil compaction on the microbial populations of melon and maize rhizoplane. Plant Soil, 189, 91-96.
Jezierska-Tys S., Frąc M., and Tys J., 2010. Microbiological hazard resulting from application of dairy sewage sludge: effects on occurrence of pathogenic microorganisms in soil. J. Toxicol. Environ. Health, Part A, 73, 1194-1201.
Jordan D., Ponder Jr. F., and Hubbard V. C., 2003. Effects of soil compaction, forest leaf litter and nitrogen fertilizer on two oak species and microbial activity. Appl. Soil Ecol., 23, 33-41.
Karaca A., Baran A., and Kaktanir K., 2000. The effect of compaction on urease enzyme activity, carbon dioxide evaluation and nitrogen mineralization. Turkey J. Agric. For., 24, 437-441.
Kremer R. J. and Li J., 2003. Developing weed-suppressive soils through improved soil quality management. Soil Till. Res., 72, 193-202.
Ladd J. N. and Butler J. H. A., 1972. Short-termassay of soil proteolytic enzyme activities using proteins and dipeptide derivatives as substrates. Soil Biol. Biochem., 4, 19-30.
Lee W. J., Wood C. W., Reeves D. W., Entry J. A., and Raper R. L., 1996. Interactive effects of wheel-traffic and tillage system on soil carbon and nitrogen. Soil Sci. Plant Anal., 27, 3027-3043.
Li Q., Allen H. L., and Wilson C. A., 2003. Nitrogen mineralization dynamics following the establishment of a loblolly pine plantation. Can. J. For. Res., 33, 364-374.
Pupin B., Freddi O., and Nahas E., 2009. Microbial alterations of the soil influenced by induced compaction. Rev. Brasil. Ciě. Solo, 33, 1207-1213.
Riffaldi R., Saviozzi A., Levi-Minzi R., and Cardelli R., 2003. Conventional crop management effects on soil organic matter characteristics. Agronomie, 23, 45-50.
Shestak C. J. and Busse M. D., 2005. Compaction alters physical but not biological indices of soil health. Soil Sci. Soc. Am. J., 69, 236-246.
Siczek A. and Lipiec J., 2011. Soybean nodulation and nitrogen fixation in response to soil compaction and surface straw mulching. Soil Till. Res., 114, 50-56.
Smeltzer D. L. K., Bergdhal D. R., and Donnelly J. R., 1986. Forest ecosystem responses to artificially induced soil compaction. II. Selected soil microorganism populations. Can. J. For. Res., 16, 870-872.
Tabatabai M. A. and Bremner J. M., 1969. Use of p-nitrophenyl phosphate for assay of soil phosphatase activity. Soil Biol. Biochem., 1, 301-307.
Taylor J. P., Wilson B., Mills M. S., and Burns R. G., 2002. Comparison of microbial numbers and enzymatic activities in surface soils and subsoils various techniques. Soil Biol. Biochem., 34, 387-401.
Thalmann A., 1968. Zur Methodik der Bestimmung der Dehydrogenase - Aktivität im Boden mittels Triphenyltetrazoliumchlorid (TTC). Landwirtsh. Forsch., 21, 249-258.
Tu C., Ristaino J. B., and Hu S., 2006. Soil microbial biomass and activity in organic tomato farming systems: Effects of organic inputs and straw mulching. Soil Biol. Biochem., 38, 247-255.