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close this bookLow-external Input Rice Production (IIRR, 292 p.)
close this folderSeeds/seedlings/transplanting
View the document(introduction...)
View the documentManaging traditional cultivars for optimum outputs
View the documentProducing rice seeds in a farmer's field
View the documentDetermination of rice seed quality
View the documentRice seed dormancy
View the documentRice seed collection and handling
View the documentCommon botanicals and other materials in rice seed protection during storage
View the documentOn-farm grain storage
View the documentClonal propagation: a method of seed multiplication
View the documentRaising seedlings by the wetbed method
View the documentThe dapog method of raising rice seedlings
View the documentLine markers for rice transplanting
View the documentStraight-row planting using the square and triple-row spacing
View the documentA manually operated rice transplanter
View the documentA drum seeder for direct seeding
View the documentInoculating rice seedlings with Azospirillum

Straight-row planting using the square and triple-row spacing

ADVANTAGES OF STRAIGHT-ROW PLANTING:

1. Easier to apply production inputs and implement management practices
2. Possible to use rotary weeder
3. Promotes optimum plant population and uniform nutrient uptake

The most common straight-row planting method used by farmers is the square method ranging from 20 cm to 30 cm, planting 2-3 wet bed grown seedlings or 4-6 dapog seedlings.


Square


Triple rows

Another planting system which has increased yields above those using the square method i the triple-row system.

Trials conducted in Navarro, General Trias, Cavite, using IR70 rice variety, gave the following figures (average of 2 cropping seasons):

Spacing Method

Amount of Seeds(kg/ha)

Transplanting(manhours/ha)

Grain Yield(T/ha)

Square Method
(20 x 20 cm)

60

120

4.1

Triple-row Spacing

180

300

5.0


Advantages of the triple-row spacing system

Note: Rows are oriented in an East-West direction so that leaves can receive the maximum amount of sunlight.