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18
Jul

Land preparation, soil moisture and Seed depth in Direct Seeded Rice

 
Plow the fields during summer to control emerging weeds
Leveling the fields well facilitates uniform irrigation and better germination
Optimum depth of seed:2-3 cm. The seed should be covered by soil for proper
        germination and to avoi
18
Jul

Direct Seeded Rice

Rice can be directly seeded either through dry or wet (pregerminated) seeding.

Dry seeding of rice can be done by drilling the seed into a fine seedbed at a depth of 2-3 centimeters.

Wet seeding requires leveled fields to be harrowed and then flooded (puddling). The field is left for 12-24 hours after puddling, then germinated seeds (48-72 hours) are sown using a drum seeder.

Seed can be broadcast for either dry or wet seeding, but manual weeding is
25
Jun

Limitations of wet direct seeding

1. Good land preparation, levelling and water management are needed for uniform crop establishment. 2. Weeds are very serious in dry seeding and serious in wet seeding. 3. Snails (in wet seeded fields), and rats and birds can severely reduce plant stands. 4. Heavy rainfall at the time of crop establishment can result in crop establishment failure (especially in heavier clay soils), and if water sits over seed still germinating below the soil. 5. Longer occupation of main field by 5
25
Jun

Procedure for wet direct seeding

1. Ensure the field is well levelled, well puddled and weed free. 2. 2-5 days after the final puddling, the soil has settled to be solid enough to hold seed on or near the surface and weeds have not yet established. 3. In drained fields, small outlets can be made across the field a couple of days after puddling to further help drain the field and avoid snail damage and seed emergence problems in areas with standing water. 4. Pre-germinate the seed (soak for 24 hours in water, cover a
25
Jun

Why Use Wet Direct Seeding?

1. Easier (less drudgery) and more timely crop establishment. 2. Reduced labour costs for crop establishment. 3. Possible savings in water use.
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