Cumulative effect of burnt rice husk and potassium fertilizer on cassava planted in a typic paleustult

Name: Naruetaporn Prombut

keyword: Burnt rice husk.

LCSH: Kasetsart University -- Theses. M.S. (Soil Science)) 2020

Classification :.LCCS: S667.C3

LCSH: Kasetsart University. -- Department of Soil Science -- Theses

LCSH: Cassava -- Fertilizers

LCSH: Cassava -- Soils

LCSH: Rice hulls -- Utilization

LCSH: Potassium fertilizers

Abstract: Two-year field experiment was carried out in a farmer field at Ban Supplu Noi, Huay Bong subdistrict, Dan Khun Thot district, Nakhon Ratchasima province to investigate the effect of burnt rice husk (BRH) and K fertilizer on growth, yield, plant nutrient concentration and uptake of cassava, Huay Bong 80 variety, planted in a Typic Paleustult, and some soil properties. Split-plot design with four replications was employed. Main plot contained five rates of BRH (0, 3.125, 6.25, 12.5, and 25 t/ha) and subplot consisted of six rates of K fertilizer (0, 25, 50, 75, 100 and 125 kg K2O/ha). Cassava was harvested at 10- month of age and soil samples were collected at the harvesting time of the second crop. Results showed that the addition of BRH at the rate of 25 t/ha significantly promoted fresh tuber yield of 55% greater than that of the non-amended plot. Also, the addition at the rates between 6.25-25 t/ha produced higher starch yield than did the control plot. All plots fertilized with K fertilizer produced fresh tuber yield in the range of 20.25- 23.75 t/ha with the yields increased with increasing rate of K fertilizer, and were all highly significantly greater than that of the control (17.38 t/ha). The application of BRH at the rate of 25 t/ha together with 25 kg K2O/ha interactively gave the significantly highest starch content of 26.63%. Increasing rate of BRH statistically increased P concentration in stem base, and leaf and branch, and K concentration in tuber, and leaf and branch, and Cu concentration in tuber. Potassium fertilization significantly augmented K concentrations in tuber, stem base, and stem, and Fe and Mn concentrations in leaf and branch. Burnt rice husk positively showed the cumulative effect on the uptake of most nutrients in most plant parts whereas K fertilizer also had the impact but in smaller extent. Burnt rice husk added at the rates of 12.5 and 25 t/ha had a significant effect on increasing organic matter content. The waste also clearly improved available P, extractable Mg and K, available Zn and Cu contents in the soil while K fertilizer only increasing extractable K content in the soil slightly. In addition, this fertilizer tended to affect the decrease of soil available P content after growing cassava for two crops.

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: 2020

Modified: 2025-07-19

Issued: 2025-07-19

วิทยานิพนธ์/Thesis

application/pdf

URL: https://www.lib.ku.ac.th/KUthesis/2563/naruetaporn-pro-all.pdf

CallNumber: S667.C3 .N37

eng

DegreeName: Master of Science

Level: Master's Degree

Descipline: Soil Science

Grantor: Kasetsart University

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