Suppressing weeds in direct-seeded lowland rainfed rice: Effect of cutting dates and timing of fertilizer application

Weeds cause substantive yield losses in rainfed rice, particularly direct-seeded rice (DSR). Two field experiments were conducted in 2005 in north-east Thailand to examine the effects of cutting date and timing of fertilizer application on suppressed weed, growth and yield of DSR. Treatments consisted of two fertilizer applications to the main plots (top-dressing at the date of cutting and 15 days after cutting; DAC) and four cutting dates of the sub-plots. Rice and weed cutting was performed at 30, 45, 60 and 75 days after seeding (DAS), compared with an untreated control. Cutting resulted in a higher growth rate and improved grain yield of rice compared to the untreated control. Weed cutting at 60 DAS resulted in the greatest leaf area index, which contributed to the maximum number of tiller as well as maximum plant dry mass when observed at 30 DAC. Lower densities and dry weights of weeds at 30 DAC were observed when cutting was done 60 DAS, resulting in a higher grain yield than the other cutting dates. Timing of fertilizer application had no significant effect on the density and dry weight of grasses and broad-leaved weeds, but did have a significant affected on, resulting in the lowest density of sedges at 45 DAC was observed with fertilizer applied at cutting date. Rice grain yield was higher with top-dressing of fertilizer at 15 DAC than with fertilizer applied at cutting date. The cutting treatments resulted in higher net incomes than the untreated control. These results indicate that rice and weed cutting at an appropriate growth stage is an alternative method to chemical weed control for DSR in rainfed riceland.

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Bibliographic Details
Main Authors: Sanusan, Suchada, Polthanee, Anan, Audebert, Alain, Seripong, Surasak, Mouret, Jean Claude
Format: article biblioteca
Language:eng
Subjects:H60 - Mauvaises herbes et désherbage, F04 - Fertilisation, F08 - Systèmes et modes de culture, riz pluvial, Oryza, http://aims.fao.org/aos/agrovoc/c_8076, http://aims.fao.org/aos/agrovoc/c_5435, http://aims.fao.org/aos/agrovoc/c_7701,
Online Access:http://agritrop.cirad.fr/556339/
http://agritrop.cirad.fr/556339/1/document_556339.pdf
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spelling dig-cirad-fr-5563392024-01-28T18:33:20Z http://agritrop.cirad.fr/556339/ http://agritrop.cirad.fr/556339/ Suppressing weeds in direct-seeded lowland rainfed rice: Effect of cutting dates and timing of fertilizer application. Sanusan Suchada, Polthanee Anan, Audebert Alain, Seripong Surasak, Mouret Jean Claude. 2010. Crop Protection, 29 (9) : 927-935.https://doi.org/10.1016/j.cropro.2010.04.004 <https://doi.org/10.1016/j.cropro.2010.04.004> Suppressing weeds in direct-seeded lowland rainfed rice: Effect of cutting dates and timing of fertilizer application Sanusan, Suchada Polthanee, Anan Audebert, Alain Seripong, Surasak Mouret, Jean Claude eng 2010 Crop Protection H60 - Mauvaises herbes et désherbage F04 - Fertilisation F08 - Systèmes et modes de culture riz pluvial Oryza http://aims.fao.org/aos/agrovoc/c_8076 http://aims.fao.org/aos/agrovoc/c_5435 Thaïlande http://aims.fao.org/aos/agrovoc/c_7701 Weeds cause substantive yield losses in rainfed rice, particularly direct-seeded rice (DSR). Two field experiments were conducted in 2005 in north-east Thailand to examine the effects of cutting date and timing of fertilizer application on suppressed weed, growth and yield of DSR. Treatments consisted of two fertilizer applications to the main plots (top-dressing at the date of cutting and 15 days after cutting; DAC) and four cutting dates of the sub-plots. Rice and weed cutting was performed at 30, 45, 60 and 75 days after seeding (DAS), compared with an untreated control. Cutting resulted in a higher growth rate and improved grain yield of rice compared to the untreated control. Weed cutting at 60 DAS resulted in the greatest leaf area index, which contributed to the maximum number of tiller as well as maximum plant dry mass when observed at 30 DAC. Lower densities and dry weights of weeds at 30 DAC were observed when cutting was done 60 DAS, resulting in a higher grain yield than the other cutting dates. Timing of fertilizer application had no significant effect on the density and dry weight of grasses and broad-leaved weeds, but did have a significant affected on, resulting in the lowest density of sedges at 45 DAC was observed with fertilizer applied at cutting date. Rice grain yield was higher with top-dressing of fertilizer at 15 DAC than with fertilizer applied at cutting date. The cutting treatments resulted in higher net incomes than the untreated control. These results indicate that rice and weed cutting at an appropriate growth stage is an alternative method to chemical weed control for DSR in rainfed riceland. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/556339/1/document_556339.pdf application/pdf Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1016/j.cropro.2010.04.004 10.1016/j.cropro.2010.04.004 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.cropro.2010.04.004 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1016/j.cropro.2010.04.004
institution CIRAD FR
collection DSpace
country Francia
countrycode FR
component Bibliográfico
access En linea
databasecode dig-cirad-fr
tag biblioteca
region Europa del Oeste
libraryname Biblioteca del CIRAD Francia
language eng
topic H60 - Mauvaises herbes et désherbage
F04 - Fertilisation
F08 - Systèmes et modes de culture
riz pluvial
Oryza
http://aims.fao.org/aos/agrovoc/c_8076
http://aims.fao.org/aos/agrovoc/c_5435
http://aims.fao.org/aos/agrovoc/c_7701
H60 - Mauvaises herbes et désherbage
F04 - Fertilisation
F08 - Systèmes et modes de culture
riz pluvial
Oryza
http://aims.fao.org/aos/agrovoc/c_8076
http://aims.fao.org/aos/agrovoc/c_5435
http://aims.fao.org/aos/agrovoc/c_7701
spellingShingle H60 - Mauvaises herbes et désherbage
F04 - Fertilisation
F08 - Systèmes et modes de culture
riz pluvial
Oryza
http://aims.fao.org/aos/agrovoc/c_8076
http://aims.fao.org/aos/agrovoc/c_5435
http://aims.fao.org/aos/agrovoc/c_7701
H60 - Mauvaises herbes et désherbage
F04 - Fertilisation
F08 - Systèmes et modes de culture
riz pluvial
Oryza
http://aims.fao.org/aos/agrovoc/c_8076
http://aims.fao.org/aos/agrovoc/c_5435
http://aims.fao.org/aos/agrovoc/c_7701
Sanusan, Suchada
Polthanee, Anan
Audebert, Alain
Seripong, Surasak
Mouret, Jean Claude
Suppressing weeds in direct-seeded lowland rainfed rice: Effect of cutting dates and timing of fertilizer application
description Weeds cause substantive yield losses in rainfed rice, particularly direct-seeded rice (DSR). Two field experiments were conducted in 2005 in north-east Thailand to examine the effects of cutting date and timing of fertilizer application on suppressed weed, growth and yield of DSR. Treatments consisted of two fertilizer applications to the main plots (top-dressing at the date of cutting and 15 days after cutting; DAC) and four cutting dates of the sub-plots. Rice and weed cutting was performed at 30, 45, 60 and 75 days after seeding (DAS), compared with an untreated control. Cutting resulted in a higher growth rate and improved grain yield of rice compared to the untreated control. Weed cutting at 60 DAS resulted in the greatest leaf area index, which contributed to the maximum number of tiller as well as maximum plant dry mass when observed at 30 DAC. Lower densities and dry weights of weeds at 30 DAC were observed when cutting was done 60 DAS, resulting in a higher grain yield than the other cutting dates. Timing of fertilizer application had no significant effect on the density and dry weight of grasses and broad-leaved weeds, but did have a significant affected on, resulting in the lowest density of sedges at 45 DAC was observed with fertilizer applied at cutting date. Rice grain yield was higher with top-dressing of fertilizer at 15 DAC than with fertilizer applied at cutting date. The cutting treatments resulted in higher net incomes than the untreated control. These results indicate that rice and weed cutting at an appropriate growth stage is an alternative method to chemical weed control for DSR in rainfed riceland.
format article
topic_facet H60 - Mauvaises herbes et désherbage
F04 - Fertilisation
F08 - Systèmes et modes de culture
riz pluvial
Oryza
http://aims.fao.org/aos/agrovoc/c_8076
http://aims.fao.org/aos/agrovoc/c_5435
http://aims.fao.org/aos/agrovoc/c_7701
author Sanusan, Suchada
Polthanee, Anan
Audebert, Alain
Seripong, Surasak
Mouret, Jean Claude
author_facet Sanusan, Suchada
Polthanee, Anan
Audebert, Alain
Seripong, Surasak
Mouret, Jean Claude
author_sort Sanusan, Suchada
title Suppressing weeds in direct-seeded lowland rainfed rice: Effect of cutting dates and timing of fertilizer application
title_short Suppressing weeds in direct-seeded lowland rainfed rice: Effect of cutting dates and timing of fertilizer application
title_full Suppressing weeds in direct-seeded lowland rainfed rice: Effect of cutting dates and timing of fertilizer application
title_fullStr Suppressing weeds in direct-seeded lowland rainfed rice: Effect of cutting dates and timing of fertilizer application
title_full_unstemmed Suppressing weeds in direct-seeded lowland rainfed rice: Effect of cutting dates and timing of fertilizer application
title_sort suppressing weeds in direct-seeded lowland rainfed rice: effect of cutting dates and timing of fertilizer application
url http://agritrop.cirad.fr/556339/
http://agritrop.cirad.fr/556339/1/document_556339.pdf
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AT audebertalain suppressingweedsindirectseededlowlandrainfedriceeffectofcuttingdatesandtimingoffertilizerapplication
AT seripongsurasak suppressingweedsindirectseededlowlandrainfedriceeffectofcuttingdatesandtimingoffertilizerapplication
AT mouretjeanclaude suppressingweedsindirectseededlowlandrainfedriceeffectofcuttingdatesandtimingoffertilizerapplication
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