| Author | Basnet, Badri Bahadur |
| Call Number | AIT RSPR no. AE-84-03 |
| Subject(s) | Soil fertility
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| Note | A research study submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment, Research, and Development |
| Publisher | Asian Institute of Technology |
| Abstract | Soil samples were taken from the proposed agricultural experimental field of the AIT campus, which was laid-out into 108 plots of 400 m2 each. One hundred and twenty-four soil samples (one composite sample from each plot plus duplicate samples from 16 plots) were analysed for seven different soil parameters. From the analysis result, this field appeared to be very acidic. Electrical conductivity of the soil varied from 136-1515 micromhos/cm. The organic carbon content of this mineral soil is within the range of 0.73-1.91 percent. The soil is well represented with its available potassium content of 158-311 ppm. however, it is found to be very poor in its available phosphorus, which is but typical for this highly acidic acid sulphate soil. Although the available P ranges from 2.6 to 19.85 ppm, most part of the field has very low available phosphorus. A wide range of "available" sodium was encountered within the field. Lime requirement for individual samples was determined by different methods.. The SMP single buffer and Co(OH)2 equilibration method resulted almost in double the amount of lime requirement estimated by exchange acidity and exchangeable aluminum methods. Ca(OH)2 equilibration method, although it estimates reasonable amount of lime quantity, is too lengthy for serial analyses. SMP single buffer method is quick and resulted in values close to the Ca (OH)2 equilibration test. Fertility contour maps have been drawn using SPSS - package to show the heterogeneity of soil. |
| Year | 1984 |
| Type | Research Study Project Report (RSPR) |
| School | School of Environment, Resources, and Development |
| Department | Department of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB)) |
| Academic Program/FoS | Agricultural and Food Engineering (AE) |
| Chairperson(s) | Eppendorfer, W.H. |
| Examination Committee(s) | Jensen, Jens Raunso ; Wee, Kok Leong |
| Scholarship Donor(s) | MUCIA/ AIV Nepal |
| Degree | Research Studies Project Report (M. Eng.) - Asian Institute of Technology, 1984 |