Effect of chemical fertilizer and Zn foliar application on cassava planted in an arenic haplustult amended with chicken manure and perlite for eight consecutive years

Name: Phakkanan Natthaharit

LCSH: Kasetsart University -- Theses. M.S. (Soil Science) 2023.

Classification :.LCCS: S667.C3

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

LCSH: Cassava -- Fertilizers.

LCSH: Soil amendments

LCSH: Soil fertility.

LCSH: Sandy soils -- Thailand.

LCSH: Soil management -- Thailand

Abstract: Long-term field trials are vital for sustainable improvement of cassava production in low-fertility sandy soils in northeast Thailand. This study was carried out objectively to investigate the response of cassava to NPK fertilization and Zn foliar application and some soil properties following the application of perlite (PL) and chicken manure (CM) for 8 years. The 8-year field experiment was undertaken in an Arenic Haplustult, using a split-split plot design with the main plots comprising no application of soil amendment, compared to the addition of PL at 0.625 t/ha, CM at 3.125 t/ha and PL+CM at 0.625+6.125 t/ha, the subplots consisting of four rates of NPK fertilizer, and the sub-subplots containing three rates of Zn foliar application. Results showed that after the 8th growing season, the significantly highest cassava fresh tuber yield (43.08 t/ha) was from the application of 100:50:100 kg/ha of N:P2O5:K2O together with 3.125 kg Zn/ha of Zn foliar application in the PL+CM amended plot. This amount was 60.0% and 172.3% greater than those obtained from the non-amended plot with the same NPK fertilizer added and Zn foliar application, and without NPK fertilization nor Zn foliar application, respectively. The CM or PL+CM mixture together with 100:50:100 or 200:100:200 kg/ha of N:P2O5:K2O significantly increased the uptake of almost all plant nutrients in almost all plant parts of cassava whilst the additional Zn foliar application had a lesser impact in this matter. The continuous application of CM or the PL+CM mixture significantly increased almost all plant nutrients, pH and organic matter contents in both the topsoil and underlying subsoil compared to no soil amendment. These results illustrated that the proper NPK fertilizer rates, possibly with Zn foliar application as a supplementary nutrient, increased the cassava yield when the soil has continuously been amended using modest amounts of CM or PL+CM for several years. Furthermore, these soil amendments, which are recommended for use, improved the quality of the tropical upland sandy soil.

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: Mutchima Sasirat

Role: Thesis Co-Advisor

Created: 2023

Modified: 2025-06-26

Issued: 2025-06-26

วิทยานิพนธ์/Thesis

วิทยานิพนธ์/Thesis

application/pdf

URL: http://www.lib.ku.ac.th/KUthesis/2566/phakkanan-nat-all.pdf

CallNumber: S667.C3.P43

eng

Spatial: Thailand.

DegreeName: Master of Science

Level: Master's Degree

Descipline: Soil Science

Grantor: Kasetsart University

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