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The University of the Philippines (UP) is the country’s national university. This premier institution of higher learning was established in 1908 and is now a university system composed of eight constituent universities and one autonomous college spread throughout 17 campuses in the archipelago.

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Journal Article

Journal Article

Modified dapog method appropriate for growing hybrid rice seedlings  [2005]

Escarbarte, R.S.Jr, Buhat, J.N.M. (Philippine Rice Research Inst., Midsayap, North Cotabato 9410 (Philippines)); de Leon, J.C.;

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Hybrid rice commercial cultivation recommends an optimum of 20 kg seeds/ha only to be sown on 400 sq m seedbed area under a wetbed method primarily due to high cost of seeds. These results to sparse density and vigorous seedling growth intended to plant one seedling/hill to meet the seed requirement. To further reduce the cost of hybrid rice productions, the dapog method was explored with an aim of developing protocol of raising F1 hybrid seedlings. PSB RC72H (Mestizo) was tested in the field with different seedling rates (250, 500, 750, 1000, 2000 and 3000 g/sq m), seedling age (10, 14 and 16 days after seedling, DAS), seedbed lining (nonporous plastic sheet; coarse-pore plastic net and fine-pores plastic net) and materials (rice hull, rice straw compost and rice hull ash), and fertilizer source (Control, N, NP, NK, NPK) and rates ( recommended, low, medium and high) with four replications each trial. Cosidering the agronomic and economic weight, appropriate procedures of growing dapog hybrid seedling were found at 1000 g/sq m seeding rate, 10 days of age from seeding, grown on a fine pore plastic net with rice hull seedbed lining underneath and to be fertilized with 100 g/sq m ammonium sulfate or 1:10 fertilizer: seed amount ratio. These resulted to taller seedling height, bigger seedling biomass, longer leaf blades and roots, lesser seedling damage (cut during pulling) and missing hills in the field than the conventionally grown dapog method. Importantl
y, the method allows easy separation and planting of single seeding/hill with 10-11 (or 45-50% lesser) kg seed requirement or a hectare at 1 to two seedling/hill and 20x20 cm planting. This modified dapog method could save 20-25 % in cost for the whole operations (land to planting) of crop establishment compared to wet bed grown hybrid seedlings.
From the journal
Philippine Journal of Crop Science (Philippines)

Bibliographic information

Language:
English
Type:
Conference
In AGRIS since:
2006
Volume:
30
Issue:
supplement1
Start Page:
29
All titles:
"Modified dapog method appropriate for growing hybrid rice seedlings"@eng
Other:
"Summary only"
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Bibliographic information

Language:
English
Type:
Conference
In AGRIS since:
2006
Volume:
30
Issue:
supplement1
Start Page:
29
All titles:
"Modified dapog method appropriate for growing hybrid rice seedlings"@eng
Other:
"Summary only"