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Pilatluck Lunlio. Deep placement of soil conditioners for growing cassava in norteast Thailand. Doctoral Degree(Soil Science). Kasetsart University. Office of the University Library. : Kasetsart University, 2016.
Deep placement of soil conditioners for growing cassava in norteast Thailand
Name: Pilatluck Lunlio
Classification :.LCCS: S667.C3
LCSH:
Soil amendments
LCSH:
Soil conditioners
Abstract:
Two experiments were carried out on Warin and Yasothon soils at Ban Supplu Noi, Huay Bong subdistrict, Dan Khun Thot district, Nakon Ratchasima province for two years to investigate the cumulative effect of tillage, soil conditioner and chemical fertilizer on yield of cassava, Huay Bong 80 variety. Similar experimental design employed in this study was splitsplit plot in randomized complete block design with four replications for both trials. Main plot consisted of normal tillage (N) and deep tillage (D). Subplot contained 11 treatments as follows; T1: no soil conditioner, and all the rest applying two rates (625 and 1,250 kg ha-1) of different soil conditioners including bentonite (T2 and T3), perlite (T4 and T5), gypsum (T6 and T7), dolomite (T8 and T9), and ground limestone (T10 and T11). Sub-subplot was the comparison between rates of N-P2O5-K2O. The soil representing both experimental areas was a Typic Paleustult. Cassava was harvested at 10-month of age and soil samples were also collected during the harvesting period in both years of the study. Results showed that deep tillage (D) significantly gave higher fresh tuber yield and starch yield in both years of conducting both experiments than did normal tillage (Warin soil: 28.62 and 21.90 ton ha-1 for fresh tuber yield and 7.77 and 5.73 ton ha-1 for starch yield, and Yasothon soil:31.92 and 24.68 ton ha-1 for fresh tuber yield and 9.38 and 6.84 ton ha-1 for starch yield). Different rates and types of soil conditioner had different impacts on cassava yield components. In Warin soil, the application of dolomite (T8) significantly gave the highest fresh tuber and starch yields of 31.68 and 8.65 ton ha-1, respectively, in the first crop while applying ground limestone (T11) statistically promoted the highest fresh tuber and starch yields of 24.67 and 6.43 ton ha-1, respectively, in the second crop. In Yasothon soil, the application of ground limestone (T11) significantly gave the highest fresh tuber and starch yields of 35.20 and 10.43 ton ha-1, respectively, in the first crop and 28.12 and 7.88 ton ha-1, respectively, in the second crop. It can be pointed out that with no application of soil conditioners, cassava yields were lowest when grown in both soils in both years. There were no clear effects of the interactions between practices on cassava yield components. Tillage, the deep one in particular, and soil conditioners applied contributed to higher concentration of plant nutrients and their uptake in different plant parts. There were positive correlations between plant nutrient concentrations, especially macronutrient in stem, with fresh tuber yield and aboveground biomass. Effect of tillage and soil conditioner on soil bulk density was not conclusive. Dolomite (T8 and T9) and ground limestone (T10 and T11) cumulatively induced higher pH of the topsoil than did other soil conditioners and the control after having been applied for two consecutive years. Furthermore, the application of soil conditioner for two consecutive years had a cumulative effect on nutrient concentrations inclusive of available P, K, Ca and Mg in these soils.
Kasetsart University. Office of the University Library
Address:
Bangkok
Email:
tdckulib@ku.ac.th
Name: Somchai Anusontpornperm
Role:
Thesis Advisor
Name: Irb Kheoruenromne
Role:
Thesis Co-Advisor
Name: Suphicha Thanachit
Role:
Thesis Co-Advisor
Created:
2016
Modified:
2023-06-12
Issued:
2023-06-12
วิทยานิพนธ์/Thesis
application/pdf
URL: https://kasetsart.idm.oclc.org/login?url=https://www.lib.ku.ac.th/KUthesis/2559/pilatluck-lun-all.pdf
CallNumber:
S667.C3.P55
eng
DegreeName: Doctor of Philosophy
Level: Doctoral Degree
Descipline: Soil Science
Grantor: Kasetsart University
©copyrights Kasetsart University
RightsAccess:
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0.018723 วินาที
Pilatluck Lunlio
| Title | Contributor | Type |
|---|---|---|
| Deep placement of soil conditioners for growing cassava in norteast Thailand
มหาวิทยาลัยเกษตรศาสตร์ Pilatluck Lunlio | Somchai Anusontpornperm Irb Kheoruenromne Suphicha Thanachit | วิทยานิพนธ์/Thesis |
Somchai Anusontpornperm
Irb Kheoruenromne
Suphicha Thanachit