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Effects of organic amendments, drainage and mulching on the reclamation of salt-affected soil in Northeast Thailand / by Niyom Boonpikum

By:

Boonpikum, Niyom [author]

Contributor(s):

Felizardo, Bonifacio C

Material type: Text

TextLanguage: English Publication details: Los Baños, Laguna : 1982. Cavite State University- Main Campus,Description: 138 pages : illustrations ; 28 cmContent type:

text

Media type:

unmediated

Carrier type:

volume

Subject(s):

DDC classification:

631.4 B65 1982

Online resources:

Click here to view thesis abstract and table of contents

Abstract: BOONPIKUM, NIYOM, University of the Philippines at Los Banos, February 1982. Effects of Organic Amendments, Drainage and Mulching on the Reclamation of Salt-Affected Soil in Northeast Thailand. Major Professor: Dr. Bonifacio C. Felizardo A field experiment to determine the effects of organic amendments, of drainage and of mulching on the yield of rice and sorghum and on some chemical properties of a salt-affected soil was conducted in Kalasin province, Thailand from September 11, 1980 to July 16, 1981, The results show that among the four kinds of organic amendments tested, rice hull and buffalo manure at the rate of 25 tons/ha each gave significantly the highest grain yield of the rice RD7 variety. In the first crop, the grain yield in the rice hull treatment was 2.331 tons/ha while the buffalo manure was 2.120 tons/ha. In the second crop, testing the residual effect of the soil amendments, the buffalo manure gave a yield of 2.732 tons/ha and rice hull, 2.420 tons/ha. Rice RD7 variety is a medium salt tolerant variety and was able to grow on 6.70 mmhos/em of EC. The sesbania straw treatment gave significantly higher nitrogen and potassium in rice straw, than the buffalo manure, rice straw and rice hull treatments. Submergence significantly increased the pH and available phosphorus in the soil. The irrigation water was classified as C3-S,; or Cy-S,, which simply means it is high in salinity hazards and low in sodium hazard. The intermittent drainage treatment before the application of 5 tons of rice straw mulch per hectare increased the grain yield, head dry weight, total dry matter production and harvest index of the sorghum over the control. The sorghum grain yield was highly correlated with head dry weight, 100-grain weight and harvest index, but not to plant height, panicle length, grain- stover ratio and total dry matter production in the intermittent drainage plot. In the no drainage plot, the sorghum grain yield was highly correlated with the head dry weight and total dry matter production, but not to plant height, panicle length, 100-grain weight, grain-stover ratio and harvest index. Organic amendments increased the pH and available phosphorus in the soil but did not affect the electrical conductivity, organic matter and osmotic pressure.

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Holdings ( 1 )
Title notes ( 4 )

Holdings
Item type	Current library	Collection	Call number	Materials specified	URL	Status	Notes	Date due	Barcode
Theses / Manuscripts	Ladislao N. Diwa Memorial Library Theses Section	Non-fiction	631.4 B65 1982 (Browse shelf(Opens below))		Link to resource	Room use only	T-1429		00002312

Thesis (Ph.D. - - Soil Science) University of the Philippines, College, Laguna.

Includes bibliographical references.

BOONPIKUM, NIYOM, University of the Philippines at Los Banos, February 1982. Effects of Organic Amendments, Drainage and Mulching on the Reclamation of Salt-Affected Soil in Northeast Thailand. Major Professor: Dr. Bonifacio C. Felizardo

A field experiment to determine the effects of organic amendments, of drainage and of mulching on the yield of rice and sorghum and on some chemical properties of a salt-affected soil was conducted in Kalasin province, Thailand from September 11, 1980 to July 16, 1981,

The results show that among the four kinds of organic amendments tested, rice hull and buffalo manure at the rate of 25 tons/ha each gave significantly the highest grain yield of the rice RD7 variety. In the first crop, the grain yield in the rice hull treatment was 2.331 tons/ha while the buffalo manure was 2.120 tons/ha. In the second crop, testing the residual effect of the soil amendments, the buffalo manure gave a yield of 2.732 tons/ha and rice hull, 2.420 tons/ha. Rice RD7 variety is a medium salt tolerant variety and was able to grow on 6.70 mmhos/em of EC.

The sesbania straw treatment gave significantly higher nitrogen and potassium in rice straw, than the buffalo manure, rice straw and rice hull treatments.

Submergence significantly increased the pH and available phosphorus in the soil.

The irrigation water was classified as C3-S,; or Cy-S,, which simply means it is high in salinity hazards and low in sodium hazard.

The intermittent drainage treatment before the application of 5 tons of rice straw mulch per hectare increased the grain yield, head dry weight, total dry matter production and harvest index of the sorghum over the control. The sorghum grain yield was highly correlated with head dry weight, 100-grain weight and harvest index, but not to plant height, panicle length, grain- stover ratio and total dry matter production in the intermittent drainage plot. In the no drainage plot, the sorghum grain yield was highly correlated with the head dry weight and total dry matter production, but not to plant height, panicle length, 100-grain weight, grain-stover ratio and harvest index.

Organic amendments increased the pH and available phosphorus in the soil but did not affect the electrical conductivity, organic matter and osmotic pressure.

Submitted to the University Library 01/07/1994 T-1429