MARC details
| 000 -LEADER |
|---|
| fixed length control field |
02915nam a22003253a 4500 |
| 001 - CONTROL NUMBER |
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| control field |
UPMIN-00003300477 |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
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| control field |
20221005141135.0 |
| 040 ## - CATALOGING SOURCE |
|---|
| Original cataloging agency |
DLC |
| Transcribing agency |
DLC |
| Modifying agency |
upmin |
| 041 ## - LANGUAGE CODE |
|---|
| Language code of text/sound track or separate title |
eng |
| 090 #0 - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN) |
|---|
| Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) |
LG993.5 2009 |
| Local cutter number (OCLC) ; Book number/undivided call number, CALL (RLIN) |
B4 O38 |
| 100 ## - MAIN ENTRY--PERSONAL NAME |
|---|
| Personal name |
Oguis, Georgianna Kae Ruiz. |
| 245 ## - TITLE STATEMENT |
|---|
| Title |
Long-term weed management, diversity and abundance of broadleaf weeds in a banana plantation in Davao City, Philippines / |
| Statement of responsibility, etc. |
Georgianna Kae Ruiz Oguis. |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. |
|---|
| Date of publication, distribution, etc. |
2009 |
| 300 ## - PHYSICAL DESCRIPTION |
|---|
| Extent |
90 leaves. |
| 502 ## - DISSERTATION NOTE |
|---|
| Dissertation note |
Thesis (BS Biology) -- University of the Philippines Mindanao, 2009 |
| 520 ## - SUMMARY, ETC. |
|---|
| Summary, etc. |
Weeds are considered pests by many farmers because they reduce crop yield. Some weed species however, perform useful ecological functions such as providing a habitat for biocontrol agents, nourishing useful microorganisms in the soil and preventing erosion. Appropriate weed management should therefore aim to maintain a certain level of useful weed population and diversity instead of totally eliminating weeds. To determine if this objective can be achieved under two contrasting weed management practice. I report a two-year study on the effects of manual and chemical weed management on the broadleaf weeds in a banana plantation in Davao City, Philippines. The study regularly examined seed banks and monitored the population and biomass of five dominant weed species. In addition, the reproductive biology of the weeds was examined. I found no significant difference in the seed bank counts between manual and chemical plots. The chemical weed management treatment consisting of paraquat and glyphosate, however, consistently and significantly reduced the field counts and biomass of broadleaf weeds compared to the manual treatment. The broadleaf species diversity increased in the chemical plots but decreased in the manual plots. Dominance index generally decreased due to the appearance of previously undetected Drymaria cordata and Acalypha indica, which competed with the dominant and noxious weeds ageratum conyzoids, Bidens pilosa and cleome rutidosperma in the later part of the observation period. Considering the unique characteristics of the weed species, I discussed the ecological significance of the shifts in weed composition resulting from manual and chemical weeding. I conclude that herbicide treatment was ecologically advantageous compared to manual weed control as it has more effectively reduced weed abundance and dominance of noxious weed without concomitantly decreasing weed diversity. |
| 650 17 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Banana plantation. |
| 650 17 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Ageratum conyzoides. |
| 650 17 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Paraquat. |
| 650 17 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Weeds. |
| 650 17 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Weed management. |
| 650 17 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Broadleaf weeds. |
| 650 17 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Banana plantation |
| Geographic subdivision |
Davao City |
| -- |
Philippines. |
| 650 17 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Weed diversity. |
| 650 17 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Weed seed longevity. |
| 650 17 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| Topical term or geographic name entry element |
Weed species. |
| 658 ## - INDEX TERM--CURRICULUM OBJECTIVE |
|---|
| Main curriculum objective |
Undergraduate Thesis |
| Curriculum code |
BIO200, |
| Source of term or code |
BSB |
| 905 ## - LOCAL DATA ELEMENT E, LDE (RLIN) |
|---|
| a |
Fi |
| 905 ## - LOCAL DATA ELEMENT E, LDE (RLIN) |
|---|
| a |
UP |
