Effects of water regime, nitrogen fertilization, and rice plant density on growth and reproduction of lowland weed Echinochloa crus-galli

Version 2.0

Chauhan, Bhagirath Singh; Abugho, Seth Bernard, 2014, "Effects of water regime, nitrogen fertilization, and rice plant density on growth and reproduction of lowland weed Echinochloa crus-galli", https://doi.org/10.7910/DVN/24108, Harvard Dataverse, V2

Learn about Data Citation Standards.

Contact Owner

Dataset Metrics

1 Download

Description	Direct-seeded rice systems are increasing in Asia as farmers respond to the high labor cost and shortage of water. Echinochloa crus-galli is one of the most problematic and competitive weeds in direct-seeded rice systems. Because of concerns about excessive herbicide use, there is an interest in developing cultural weed management strategies. However, the design of such strategies requires a better understanding of the weed response to crop density, nutrition, and water regime. A study was therefore conducted in pots to determine the effect of water (flooded and aerobic), nitrogen (N) fertilization (0, 100, and 200 kg N/ha), and rice density [0, 4 rice plants (~20 kg seed/ha), and 16 rice plants (~80 kg seed/ha)] on the growth and reproduction of E. crus-galli. When grown alone, the growth and seed production of E. crus-galli were higher in flooded conditions than in aerobic conditions. However, no such differences were observed when E. crus-galli was grown with rice interference. E. crus-galli growth and seed production increased with increases in N rate. Irrespective of water regime and N rate, the growth and seed production of E. crus-galli declined with increases in rice density. At 100 kg N/ha, for example, E. crus-galli shoot biomass and seed production decreased by 84-86% and 82-87%, respectively, when grown with 16 rice plants compared with its growth without rice interference. The results suggest that growth and seed production of E. crus-galli can be greatly reduced by increasing rice seeding rate. However, there is a need to involve other weed management strategies to achieve complete control of E. crus-galli and other weed species.
Keyword	Aerobic rice system, Crop interference, Leaf area, Weed competition, Weed management
Notes	Subject: null Type: CESD Notes: ;
License/Data Use Agreement	CC0 1.0

	1 File
	Effects of water regime, nitrogen fertilization, and rice plant density on growth and reproduction of lowland weed Echinochloa crus-galli.pdf Adobe PDF - 440.9 KB Published Jan 5, 2014 1 Download MD5: a22e03dd748c87888c12904854a3c77f Manuscript	Access File File Access Restricted Users may not request access to files. Download Metadata Data File Citation Download EndNote XML Download RIS Download BibTeX

Citation Metadata

Persistent Identifier	doi:10.7910/DVN/24108
Publication Date	2014-01-06
Title	Effects of water regime, nitrogen fertilization, and rice plant density on growth and reproduction of lowland weed Echinochloa crus-galli
Author	Chauhan, Bhagirath SinghIRRI-CESD Abugho, Seth BernardIRRI-CESD
Point of Contact	Use email button above to contact. Bhagirath Singh Chauhan (IRRI-CESD)
Description	Direct-seeded rice systems are increasing in Asia as farmers respond to the high labor cost and shortage of water. Echinochloa crus-galli is one of the most problematic and competitive weeds in direct-seeded rice systems. Because of concerns about excessive herbicide use, there is an interest in developing cultural weed management strategies. However, the design of such strategies requires a better understanding of the weed response to crop density, nutrition, and water regime. A study was therefore conducted in pots to determine the effect of water (flooded and aerobic), nitrogen (N) fertilization (0, 100, and 200 kg N/ha), and rice density [0, 4 rice plants (~20 kg seed/ha), and 16 rice plants (~80 kg seed/ha)] on the growth and reproduction of E. crus-galli. When grown alone, the growth and seed production of E. crus-galli were higher in flooded conditions than in aerobic conditions. However, no such differences were observed when E. crus-galli was grown with rice interference. E. crus-galli growth and seed production increased with increases in N rate. Irrespective of water regime and N rate, the growth and seed production of E. crus-galli declined with increases in rice density. At 100 kg N/ha, for example, E. crus-galli shoot biomass and seed production decreased by 84-86% and 82-87%, respectively, when grown with 16 rice plants compared with its growth without rice interference. The results suggest that growth and seed production of E. crus-galli can be greatly reduced by increasing rice seeding rate. However, there is a need to involve other weed management strategies to achieve complete control of E. crus-galli and other weed species.
Keyword	Aerobic rice system Crop interference Leaf area Weed competition Weed management
Notes	Subject: null Type: CESD Notes: ;
Production Date	2012
Distributor	Crop Protection (Elsevier) http://www.journals.elsevier.com/crop-protection
Distribution Date	2013
Depositor	Jean Sabado
Deposit Date	2014-01-03
Date of Collection	Start Date: 2012-06; End Date: 2012-11
Related Dataset	Balasubramanian, V., Hill, J.E., 2002. Direct seeding of rice in Asia: emerging issues and strategic research needs for the 21st century. In: Pandey, S., Mortimer, M., Wade, L., Tuong, T.P., Lopez, K., Hardy, B. (Eds.), Direct Seeding: Research Strategies and Opportunities. International Rice Research Institute, Los Banos, Philippines, pp. 15-39.; Mortimer, A.M., Namuco, O., Johnson, D.E., 2005. Seedling recruitment in directseeded rice: weed biology and water management. In: Toriyama, K., Heong, K.L., Hardy, B. (Eds.), Rice Is Life: Scientific Perspectives for the 21st Century. Los Banos, Philippines: International Rice Research Institute and Tsukuba. International Research Center for Agricultural Sciences, Japan.; Pandey, S., Velasco, L., 2005. Trends in crop establishment methods in Asia and research issues. In: Toriyama, K., Heong, K.L., Hardy, B. (Eds.), Rice Is Life: Scientific Perspectives for the 21st Century. Los Banos, Philippines: International Rice Research Institute and Tsukuba. Japan International Research Center for Agricultural Sciences, Japan, pp. 178-181.; Singh, G., 2008. Integrated weed management in direct-seeded rice. In: Singh, Y., Singh, V.P., Chauhan, B., Orr, A., Mortimer, A.M., Johnson, D.E., Hardy, B. (Eds.), Direct Seeding of Rice and Weed Management in the Irrigated Rice-wheat Cropping System of the Indo-gangetic Plains. International Rice Research Institute/Directorate of Experiment Station, G.B. Pant University of Agriculture and Technology, Los Banos (Philippines)/Pantnagar (India), Los Banos, Philippines, pp. 161-175.; Singh, Y., Singh, V.P., Chauhan, B., Orr, A., Mortimer, A.M., Johnson, D.E., Hardy, B. (Eds.), 2008. Direct Seeding of Rice and Weed Management in the Irrigated Rice-wheat Cropping System of the Indo-gangetic Plains. In ternational Rice Research Institute, and Pantnagar (India): Directorate of Experiment Station, G.B. Pant University of Agriculture and Technology, Los Banos (Philippines), pp. 1-272.

Geospatial Metadata

Geographic Coverage	Philippines
Geographic Unit	IRRI screenhouse

Dataset Terms

License/Data Use Agreement

Our Community Norms as well as good scientific practices expect that proper credit is given via citation. Please use the data citation shown on the dataset page.

Creative Commons CC0 1.0 Universal Public Domain Dedication. CC0 1.0

Restricted Files + Terms of Access

Restricted Files

There is 1 restricted file in this dataset.

Request Access

Users may not request access to files.

	Dataset Version	Summary	Contributors	Published on
No records found.

Edit File

This file has already been deleted (or replaced) in the current version. It may not be edited.

Restrict Access

Restricting limits access to published files. People who want to use the restricted files can request access by default. If you disable request access, you must add information about access to the Terms of Access field.

Learn about restricting files and dataset access in the User Guide.

Request Access

Enable access request

You must enable request access or add terms of access to restrict file access.

Terms of Access for Restricted Files

Save Changes

Edit Embargo

The selected file or files have already been published. Contact an administrator to change the embargo date or reason of the file or files.

Edit Retention Period

The selected file or files have already been published. Contact an administrator to change the retention period date or reason of the file or files.

Delete Files

The file will be deleted after you click on the Delete button.

Files will not be removed from previously published versions of the dataset.

Select File(s)

Please select one or more files.

Share Dataset

Share this dataset on your favorite social media networks.

Continue

Dataset Citations

Citations for this dataset are retrieved from Crossref via DataCite using Make Data Count standards. For more information about dataset metrics, please refer to the User Guide.

Sorry, no citations were found.

Inaccessible Files Selected

The selected file(s) may not be downloaded because you have not been granted access or the file(s) have a retention period that has expired or the files can only be transferred via Globus.

Ineligible Files Selected

The selected file(s) may not be transferred because you have not been granted access or the file(s) have a retention period that has expired or the files are not Globus accessible.

Download Options

The files selected are too large to download as a ZIP.

You can select individual files that are below the 15.0 GB download limit from the files table, or use the Data Access API for programmatic access to the files.

Select File(s)

Please select a file or files to be downloaded.

Inaccessible Files Selected

The selected file(s) may not be downloaded because you have not been granted access or the file(s) have a retention period that has expired.

Click Continue to download the files you have access to download.

Ineligible Files Selected

Some file(s) cannot be transferred. (They are restricted, embargoed, with an expired retention period, or not Globus accessible.)

Click Continue to transfer the elligible files.

Delete Dataset

Are you sure you want to delete this dataset and all of its files? You cannot undelete this dataset.

Delete Draft Version

Are you sure you want to delete this draft version? Files will be reverted to the most recently published version. You cannot undelete this draft.

Unpublished Dataset Preview URL

You can create a Preview URL to copy and share with others who will not need a repository account to review this unpublished dataset version. Once the dataset is published or if the URL is disabled, the URL will no longer work and will point to a "Page not found" page. Only one Preview URL can be active for a single draft dataset.

To cite this data in publications, use the dataset's persistent ID instead of this URL. For more information about the Preview URL feature, please refer to the User Guide.

General Preview

Create a URL that others can use to review this draft dataset version before it is published. They will be able to access all files in the dataset and see all metadata, including metadata that may identify the dataset's authors.

Anonymous Preview

Create a URL that others can use to access an anonymized view of this unpublished dataset version. Metadata that could identify the dataset's author will not be displayed. (See Tool Tip for the list of withheld metadata fields.) Non-identifying metadata will be visible.

The dataset's files are not changed and users of the Anonymous Preview URL will be able to access them. Users of the Anonymous Preview URL will not be able to see the name of the Dataverse that this dataset is in but will be able to see the name of the repository, which might expose the dataset authors' identities.

To verify that all identifying information has been removed or anonymized, it is recommended that you logout and review the dataset as as it would be seen by an Anonymous Preview URL user. See User Guide for more information.

You won't be able to create an Anonymous Preview URL once a version of this dataset has been published.

Unpublished Dataset Preview URL

Are you sure you want to disable the Preview URL? If you have shared the Preview URL with others they will no longer be able to use it to access your unpublished dataset.

Delete Files

The file(s) will be deleted after you click on the Delete button.

Files will not be removed from previously published versions of the dataset.

Compute

This dataset contains restricted files you may not compute on because you have not been granted access.

Deaccession Dataset

Are you sure you want to deaccession? This is permanent and the selected version(s) will no longer be viewable by the public.

Deaccession Dataset

Are you sure you want to deaccession this dataset? This is permanent an it will no longer be viewable by the public.

Version Differences Details

Please select two versions to view the differences.

Version Differences Details

Version:
Last Updated:

Select File(s)

Please select a file or files for access request.

Select File(s)

Embargoed files cannot be accessed. Please select an unembargoed file or files for your access request.

Edit Tags

Select existing file tags or create new tags to describe your files. Each file can have more than one tag.

Request Access

You need to Sign Up or Log In to request access.

Dataset Terms

Please confirm and/or complete the information needed below in order to request access to files in this dataset.

This dataset is made available under the following terms. Please confirm and/or complete the information needed below in order to continue.

License/Data Use Agreement

Our Community Norms as well as good scientific practices expect that proper credit is given via citation. Please use the data citation shown on the dataset page.

Creative Commons CC0 1.0 Universal Public Domain Dedication. CC0 1.0

Preview Guestbook

Upon downloading files the guestbook asks for the following information.

Guestbook Name

Collected Data

Account Information

Package File Download

Use the Download URL in a Wget command or a download manager to download this package file. Download via web browser is not recommended. User Guide - Downloading a Dataverse Package via URL

Download URL

https://qa.dataverse.org/api/access/datafile/

Compute Batch

Clear Batch

Dataset	Persistent Identifier	Change Compute Batch

Compute Batch

Submit for Review

You will not be able to make changes to this dataset while it is in review.

Publish Dataset

Are you sure you want to republish this dataset?

By default datasets are published with the CC0-“Public Domain Dedication” waiver. Learn more about the CC0 waiver here.

To publish with custom Terms of Use, click the Cancel button and go to the Terms tab for this dataset.

Due to the nature of changes to the current draft this will be a major release (3.0)

Publish Dataset

This dataset cannot be published until IRRI Dataverse is published by its administrator.

Publish Dataset

This dataset cannot be published until IRRI Dataverse and Harvard Dataverse are published.

Return to Author

Return this dataset to contributor for modification. The reason for return entered below will be sent by email to the author.

Curation Status History

Status	Date	Assigner
No records found.

Add/Edit a Version Note

Styled Citation