Agronomic characteristics of maize grown after rice and its soil microorganisms in paddy soil

Name: Mao, Rambo

LCSH: Kasetsart University -- Theses. M.S. (Tropical Agriculture) 2022.

Classification :.LCCS: SB191.M2

LCSH: Kasetsart University. -- Faculty of Agriculture -- Theses.

LCSH: Corn -- Growth.

LCSH: Soil microbiology.

Abstract: Nowadays, maize is an important raw material for the animal feed industries in Thailand and the feed production demand for maize has been increasing significantly. In this study, four hybrid maize varieties such as Suwan 4452, Suwan 5819, Suwan 5731, and PAC 789 were utilized to evaluate agronomic characteristics, soil chemical properties, and soil microorganisms near the root zone. Plant samples were randomly collected to evaluate destructive and nondestructive parameters while soil samples from the root zone were collected to analyze some selected soil chemical properties and soil bacterial numbers. The results showed that the new hybrid maize variety Suwan 5819 had significantly higher plant height, estimated LAI, fresh weight, and chlorophyll content. Significant differences in the agronomic characteristics of the most productive hybrids were found mostly at the VT stage and increasing the new hybrids’ dry matter accumulation promoted greater nutrient accumulation. However, the yield of the four maize varieties did not significantly differ (grain yields ranged from 12.25 – 13.17 ton ha-1 ). The results of four hybrid maize varieties showed that Suwan 5819 was mostly higher in the total nitrogen (N), phosphorus (P), and potassium (K) accumulation in the plant parts (leaves, stem, and tassel) during the V6, VT, and R3 stage. Soil pH in the root-zone of the hybrid maize varieties differed significantly at the VT stage. The result of bacterial number revealed that the rootzone of hybrid maize varieties did not significantly differ in the number of N-fixing, P-solubilizing bacteria, and K-solubilizing bacteria; however, the root zone of commercial variety showed the highest number of N-fixing and K-solubilizing bacteria.

Kasetsart University. Office of the University Library

Address: Bangkok

Email: tdckulib@ku.ac.th

Name: Sutkhet Nakasathien

Role: Thesis Advisor

Name: Arunee Wongkaew

Role: Thesis Co-Advisor

Created: 2022

Modified: 2025-06-24

Issued: 2025-06-24

วิทยานิพนธ์/Thesis

วิทยานิพนธ์/Thesis

application/pdf

URL: https://kasetsart.idm.oclc.org/login?url=http://www.lib.ku.ac.th/KUthesis/2565/rambo-mao-all.pdf

CallNumber: SB191.M2.M36

eng

DegreeName: Master of Science

Level: Master's Degree

Descipline: Tropical Agriculture

Grantor: Kasetsart University

©copyrights Kasetsart University

ลำดับที่.	ชื่อแฟ้มข้อมูล	ขนาดแฟ้มข้อมูล	จำนวนเข้าถึง	วัน-เวลาเข้าถึงล่าสุด
1	rambo-mao-all.pdf	2.08 MB

ใช้เวลา

0.020497 วินาที