Seedling establishment and yield of direct-seeded rice under different seeding depths

Sanusan Suchada, Polthanee Anan, Seripong Surasak, Audebert Alain, Mouret Jean Claude. 2009. Seedling establishment and yield of direct-seeded rice under different seeding depths. Khon Kaen Agriculture Journal, 37 : 15-22.

Titre thaï : En Thaî

Résumé : The objective of this study is to investigate the effects of different seeding depths on growth and yield of direct-seeded rice. A greenhouse experiment was conducted at the Agronomy Farm at Khon Kaen University in 2003. The experiment was a 3 x 5 factorial in a randomized complete block design with four replications. The two factors were seeding depth ( 1, 3, 5, 6 and 7 cm) and rice cultivar (three cultivars: RD 6, RD 15 and KDML 105). The results showed that seeding depth significantly affects the percentage of seedling emergence and root dry weight at 15 days after seeding (DAS), but does not significantly affect grain yield. However, planting at 6 cm seeding depth tends to give the highest seed yield. Rice cultivar significantly affects the percentage of seedling emergence and root dry weight at 15 DAS. Using cultivar RD6 gives a higher percentage of seedling emergence and root dry weight at 15 DAS than with RD15 and KDML 105. There is no significant difference in seed yield among the three rice cultivars, but RD 6 generally gives the highest seed yield.

Mots-clés Agrovoc : Oryza sativa, profondeur de semis, semis direct, variété, rendement

Mots-clés géographiques Agrovoc : Thaïlande

Classification Agris : F07 - Façons culturales
F62 - Physiologie végétale - Croissance et développement

Champ stratégique Cirad : Axe 1 (2005-2013) - Intensification écologique

Auteurs et affiliations

• Sanusan Suchada, Khon Kaen University (THA)
• Polthanee Anan, Khon Kaen University (THA)
• Seripong Surasak, Khon Kaen University (THA)
• Audebert Alain, CIRAD-BIOS-UPR AIVA (FRA) ORCID: 0000-0002-5822-7166
• Mouret Jean Claude, INRA (FRA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/560296/)

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