Soil Penetration Resistance and Its Dependence on Soil Moisture and Age of the Raised-Beds in the Mekong Delta, Vietnam
2012 (English)In: International Journal of Engineering Research and Development, ISSN 2278-067X, Vol. 4, no 8, 87-96 p.Article in journal (Refereed) Published
The research was conducted on 10 citrus plantations at Hau Giang province in the Mekong delta, Vietnam during one year with a portable electronic penetrometerto understand the impact of moisture on the soil compaction. Soil penetration resistance (PR) was measured in the depth of 0-80 cm depth and soil samples also taken at each 10 cm depth from the soil surface to the water level for soil moisture measurement. The results showed that PR increased as a function ofraised-bed’s age and it could be reached to a high degree by soil moisture variability during the season. The sensitivity of PR to soil moisture decreases with the age of raised-beds while the soil moisture represented an increasing tendency with the age of raised-beds. Relationship between PR and soil moisture are explained betterby the volumetric water content than the corresponding soil water potential expressed as pF values. The measurements of soil PR determined by the previous results, which are obtained from soil, core samples with the dry bulk density and water retention curves were calculated and analyzed. Using the PR data will be very useful; it is a complementary and important information for identification the soil structure and soil moisture content. Without such processing of PR measurements, the values of the PR measurements will be limited and not indicated for soil compaction. To minify soil compaction on the raised-beds, all the pressure and mechanical activities should not be done in the soil surface, specially in the wet condition. Organic fertilizers and Biocharcan be considered as soil conditioners and recommended to applied in orchard for improving soil properties.
Place, publisher, year, edition, pages
2012. Vol. 4, no 8, 87-96 p.
Citrus orchard, soil strength, soil compaction, Mekong delta
Environmental Sciences related to Agriculture and Land-use
IdentifiersURN: urn:nbn:se:kth:diva-127829OAI: oai:DiVA.org:kth-127829DiVA: diva2:646331
QC 201309092013-09-092013-09-092013-09-09Bibliographically approved