MARC details
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04002nam a2200265 i 4500 |
| 003 - CONTROL NUMBER IDENTIFIER |
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CHED |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
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20250207170924.0 |
| 007 - PHYSICAL DESCRIPTION FIXED FIELD--GENERAL INFORMATION |
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ta |
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250203e2018 ph ||||| |||| 00| 0 eng d |
| 040 ## - CATALOGING SOURCE |
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| Transcribing agency |
Commission on Higher Education |
| 100 1# - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Manslao, Johanna B. |
| 245 00 - TITLE STATEMENT |
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| Title |
Simulation of crop management options for USM Var 10 Maize (Zea mays L.) variety |
| Statement of responsibility, etc. |
/ Johanna B. Manslao |
| 260 3# - PUBLICATION, DISTRIBUTION, ETC. |
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| Place of publication, distribution, etc. |
Nueva Ecija, Philippines |
| Name of publisher, distributor, etc. |
: Central Luzon State University |
| Date of publication, distribution, etc. |
,2018. |
| 300 ## - PHYSICAL DESCRIPTION |
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| Extent |
xv, 96 leaves |
| Dimensions |
27 x 21cm. |
| 500 ## - GENERAL NOTE |
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| General note |
Thesis (Master of Science in Agricultural Engineering) -- Central Luzon State University, June 2018. |
| 520 3# - SUMMARY, ETC. |
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| Summary, etc. |
This study was conducted to simulate the crop management options for USM Var<br/>10 maize variety using the Decision Support System for Agrotechnology Transfer<br/>(DSSAT)version4.7. Specifically, it aimed to calibrate and validate the DSSATCERES<br/>Maize model for USMVar 10 maize variety.<br/><br/> A field was selected, prepared and USMVar 10maizewas sown in nine plots.<br/> Three sowing dates (SD,-August8,2017, SD,-August 18,2017andSD,-August28,<br/> 2017)with a 10-day interval was use and three plots were sown for each sowing date.<br/> The second sowing date data set was used for model calibration while the remaining two<br/> sowing dates (August 8, 2017andAugust28, 2017) data sets were used for the model<br/> validation. Phenological stages and yield were observed, measured and used as datasets<br/> for the model calibration and validation.<br/><br/> The Crop Genetic Coefficients (CGCs) for USMVar 10 were generated,<br/> established and set as default in the simulations. Generated CGCs were P,=262.6,<br/> P,=1.535,P,=968.0,G=609.4,G,=15.48andPHINT=38.90.<br/> Based from the result of model calibration, computed values of Root Mean<br/> Square(RMSE) and normalized Root Mean Square (nRMSE) revealed 1.47and0.026%<br/> respectively, which implies that the simulation is highly accurate and acceptable, thus,<br/><br/>DSSAT is able to predict with reliable accuracy in response to climate, geographical, soil<br/> properties and crop management inputs. Calculations of the nRMSE showed an<br/> acceptable value of 7.88% and 0.55% for the two remaining sowing dates which also<br/> imply an acceptable simulation outputs. <br/><br/> After obtaining good and acceptable values in the simulations as reflected by<br/> acceptable value of RMSE and nRMSE, the model was used to simulate different<br/> scenarios (sowing dates, fertilizer levels, sowing distance and irrigation scenarios) to<br/> formulate crop management options for USM Var 10 maize variety. <br/><br/> The results of the simulations have suggested the recommended crop management<br/> options for a good yield of the USM Var 10 maize variety. For the rainfed scenario, the<br/> recommended crop ent was for the crop sown on August 8, 2017 with a<br/> simulated yield of 7,619 kg/ha, applied with 200 kg/ha of Urea as side dressing on its 25"<br/> DAS and sown with a distance of70 cm x 25 cm, respectively. On the other hand, for the<br/> rainfed and irrigation at 50% available water scenario, the recommended crop<br/> management option was for the crop sown as early as June 9, 2017 with a simulated yield<br/> of 9,708 kg/ha. <br/><br/>This can be reliably achieved if200 kg/ha of Urea is applied as side dress<br/> on the 25" DAS and sown with a distance of70cm x 25 cm. Irrigation water requirement<br/> for the whole growth duration of these scenario was 173.32 mm applied in several<br/> occasion. The scenario would only be recommended for sowing in area of North<br/> Cotabato on sites with access to either surface irrigation of shallow tube well. |
| 650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Maize |
| General subdivision |
Varieties |
| 650 20 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Maize |
| General subdivision |
Simulation methods |
| 650 20 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Crop management |
| 650 20 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Agricultural simulation |
| 650 20 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Zea mays L. |
| 856 40 - ELECTRONIC LOCATION AND ACCESS |
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| Uniform Resource Identifier |
<a href="http://181.215.242.151/cgi-bin/koha/opac-retrieve-file.pl?id=a8f485f8d33bfcf95260c59d7d14cdab">http://181.215.242.151/cgi-bin/koha/opac-retrieve-file.pl?id=a8f485f8d33bfcf95260c59d7d14cdab</a> |
| Public note |
Abstract |
| 856 40 - ELECTRONIC LOCATION AND ACCESS |
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| Uniform Resource Identifier |
<a href="http://181.215.242.151/cgi-bin/koha/opac-retrieve-file.pl?id=453f87df1607e2ed072d7c480fb0e26e">http://181.215.242.151/cgi-bin/koha/opac-retrieve-file.pl?id=453f87df1607e2ed072d7c480fb0e26e</a> |
| Link text |
Table of Contents |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
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| Source of classification or shelving scheme |
Library of Congress Classification |
| Koha item type |
CHED Funded Research |
| Suppress in OPAC |
No |
