Cumulative effect of organic wastes on Cassava and plant nutrients release in coarse-textured soils

Name: Teeranuch Opachat

LCSH: Kasetsart University -- Theses. Ph.D. (Soil Science) 2021

Classification :.LCCS: S667.C3

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

LCSH: Cassava -- Fertilizers

LCSH: Cassava -- Soils

LCSH: Soil amendments

LCSH: Plant nutrients

LCSH: Agricultural wastes

Abstract: Field experiments were conducted for 3-consecutive years in farmer fields at Ban Suplu Noi, Huay Bong district, Dan Khun Thot province, northeast Thailand to investigate the cumulative effect of burnt rice husk (Yasothon soil series) and chicken manure (Dan Khun Thot soil series) on growth and yield of cassava, Huay Bong 80 variety, nutrient uptake, and soil property changes. Split plot design with four replications was employed for all trials. Main plot consisted of different rates of both organic wastes in a separate experiment while subplot comprising six rates of either N, P or K fertilizer. There were six trials in total. Primary plant nutrient release under field condition of these two wastes was also studied during the growth of the 3rd crop. Cassava was harvested at 10- month-old. Overall results showed that greater amount of most available plant nutrients was released from the amended plot over non-amended plot during six-month of measurement. Comparatively, chicken manure-amended soil released more nutrients available to growing cassava than did burnt rice husk-amended soil. Cassava’s growth and yield significantly responded best to the application of burnt rice husk at the rate of 25 t/ha while 6.25 and 12.5 t/ha of chicken manure were sufficient to provide a satisfactory output. Across burnt rice husk and chicken manure experiments, cassava performed best when 75-125 kg N/ha, 12.5-37.5 kg P2O5/ha, and 100-125 kg K2O/ha were applied. In the 3 rd crop, both burnt rice husk and chicken manure induced greater uptake of almost all plant nutrients in all plant parts of cassava than no application of these organic wastes. Chicken manure affected greater uptake of N and micronutrients and burnt rice husk showed more impact on greater K uptake. The application of burnt rice husk at the rate of 25 t/ha induced the highest topsoil’s pH, available P, K, Ca and Mg in all NPK trials with some available micronutrients in some trials. This rate also promoted the highest amount of easily available P in both topsoil and subsoil, moderately available P in the topsoil, water soluble, exchangeable, and non-exchangeable K in the topsoil. All rates of chicken manure increased soil pH, available P, K Ca, Mg, S, Fe, Zn and Cu contents over non-amended plot with the rate of 12.5 t/ha promoting the highest soil organic matter content in most NPK trials. Amending the soil with this poultry manure generally stimulated greater easily available P, moderately available P, except Fe-Al Po, and insoluble Ca-P in both topsoil and subsoil. Almost all rates of this manure applied also increased greater available, exchangeable, and non-exchangeable K in both topsoil and subsoil over non-amended plot.

Kasetsart University. Office of the University Library

Address: Bangkok

Email: tdckulib@ku.ac.th

Name: Somchai Anusontpornperm

Role: Thesis Advisor

Name: Suphicha Thanachit

Role: Thesis CO-Advisor

Name: Irb Kheoruenromne

Role: Thesis CO-Advisor

Created: 2021

Modified: 2025-07-27

Issued: 2025-07-27

วิทยานิพนธ์/Thesis

application/pdf

URL: https://www.lib.ku.ac.th/KUthesis/2565/teeranuch-opa-all.pdf

CallNumber: S667.C3 .T45

eng

DegreeName: Doctor of Philosophy

Level: Doctoral Degraee

Descipline: Soil Science

Grantor: Kasetsart University

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