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Soil fertility evaluation of rice and corn areas in Cebu province / Eduardo Z. Alma.

By:

Alama, Eduardo Z [author]

Contributor(s):

Corpuz., Igmidio T [adviser]

Material type: Text

TextLanguage: English Publication details: Los Baños, Laguna : University of the Philippines, 1980.Description: 101 pages : illustrations ; 28 cmContent type:

text

Media type:

unmediated

Carrier type:

volume

Subject(s):

DDC classification:

631.42 Al1 1980

Online resources:

Click here to view thesis abstract and table of contents

Abstract: ALAMA, EDUARDO Z. University of the Philippines at Los Banos, May 1980. Soil Fertility Evaluation of Rice and Corn Areas _in Cebu Province. Major Professor: Dr. Igmidio T. Corpuz. The study was conducted to establish an improved fertilizer recommendation for the major soil types in Cebu that are planted to rice and corn. This was done by: (1) correlating field fertilizer trials with chemical analyses of the different soil types, and (2) evaluating the fertility status in terms of its capability to support the growth of rice and corn. Data on field fertilizer trials at the different rice and corn growing areas of Cebu and the updated soil analyses of the different soil types were studied. Both dossiers were analyzed statistically. Soil chemical analyses were calibrated with field fertilizer trials. Points along the yield curve were designated into three categories as "low", “medium”, and "high". Recommendations were based on the fertilizer need to raise the soil test value to "high" with reference not only to the maximum yield but to the economic return of the capital invested. Results of the study showed that nitrogen was the major nutrient that limits the yield of rice and corn in the soil types studied. The pattern of nitrogen response varied greatly with location but slightly with soil types. Areas devoted to rice and corn have organic matter content lower than 3%, a limit between nitrogen deficiency and sufficiency. The response to phosphate was invariably much lower than nitrogen response. And there seem to be no difference in available phosphorus content between the major soil types. Potash response was generally negligible except for the Bolinao clay that exhibited a considerable potash requirement. Soil pH was essentially high and the presence of Caco, is likely apparent and may be a limiting factor.

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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	631.42 Al1 1980 (Browse shelf(Opens below))		Link to resource	Room use only	T-1122		00002145

Thesis (M.S. - - Soil Science) University of the Philippines, College, Laguna.

Includes bibliographical references.

ALAMA, EDUARDO Z. University of the Philippines at Los Banos, May 1980. Soil Fertility Evaluation of Rice and Corn Areas _in Cebu Province. Major Professor: Dr. Igmidio T. Corpuz.

The study was conducted to establish an improved fertilizer recommendation for the major soil types in Cebu that are planted to rice and corn. This was done by: (1) correlating field fertilizer trials with chemical analyses of the different soil types, and (2) evaluating the fertility status in terms of its capability to support the growth of rice and corn.

Data on field fertilizer trials at the different rice and corn growing areas of Cebu and the updated soil analyses of the different soil types were studied. Both dossiers were analyzed statistically. Soil chemical analyses were calibrated with field fertilizer trials. Points along the yield curve were designated into three categories as "low", “medium”, and "high". Recommendations were based on the fertilizer need to raise the soil test value to "high" with reference not only to the maximum yield but to the economic return of the capital invested.

Results of the study showed that nitrogen was the major nutrient that limits the yield of rice and corn in the soil types studied. The pattern of nitrogen response varied greatly with location but slightly with soil types. Areas devoted to rice and corn have organic matter content lower than 3%, a limit between nitrogen deficiency and sufficiency.

The response to phosphate was invariably much lower than nitrogen response. And there seem to be no difference in available phosphorus content between the major soil types.

Potash response was generally negligible except for the Bolinao clay that exhibited a considerable potash requirement.

Soil pH was essentially high and the presence of Caco, is likely apparent and may be a limiting factor.

Submitted to the University Library April 29, 1988 T-1122