Transcript
Page 1: Introduction Well drained upland field with sandy loam soil near irrigation source is selected for bed preparation. 500m 2 nursery produces seedling sufficient

Introduction

• Well drained upland field with sandy loam soil near irrigation

source is selected for bed preparation.

• 500m2 nursery produces seedling sufficient for 1 ha field. Beds 1-

1.5 m wide and length depending upon the slope and structure of

soil are made. Raised beds are ideal if the soil is clayey.

• Wet bed, dry bed and SRI Nursery are the three major methods

of raising rice seedlings in a nursery.

Page 2: Introduction Well drained upland field with sandy loam soil near irrigation source is selected for bed preparation. 500m 2 nursery produces seedling sufficient

Nursery Site Selection:

Nursery should be located away from electric light as they attract

insects at night.

Location: Near irrigation source, leveled, and convenient for

cultural operations and free from stubbles, stones, etc.

Soil Characters: Fertile, rich in organic matter, free from soil

borne pathogens, nematodes, pests and weed seeds.

Page 3: Introduction Well drained upland field with sandy loam soil near irrigation source is selected for bed preparation. 500m 2 nursery produces seedling sufficient

Land Preparation

Dry Nursery: Summer ploughing reduces the water requirement for

initial land preparation. Flood the field 1 or 2 days before ploughing

Wet Nursery: Add organic manures as needed. Irrigate, plow,

puddle and level the field

SRI Nursery: Seedlings raised in egg boxes filled with medium is

advantageous but conventional wet beds can be used. The addition

of organic manure is advisable.

Page 4: Introduction Well drained upland field with sandy loam soil near irrigation source is selected for bed preparation. 500m 2 nursery produces seedling sufficient

Puddling for wet nursery

Land preparation for dry rice nursery

Land Preparation

Page 5: Introduction Well drained upland field with sandy loam soil near irrigation source is selected for bed preparation. 500m 2 nursery produces seedling sufficient

Seed Bed Preparation for Dry nursery

• Raised beds of 120 cm wide, 15 cm high and any convenient

length should be prepared with a channel half a meter wide all

round them to facilitate drainage.

• 30kg FYM must be added in 15 m2 nursery bed.

Fig. Seed bed for dry rice nursery

Page 6: Introduction Well drained upland field with sandy loam soil near irrigation source is selected for bed preparation. 500m 2 nursery produces seedling sufficient

Seed Bed Preparation for Wet Nursery

Leveling of seed bed surface

• Seedbeds are 2.5m wide and 8-10m

long depending on soil and slope.

• 30cm wide drainage channels are dug

around seedbeds.

• Collect the puddled soil from channel

and spread it on the seedbeds so as

to raise them.

• Level surface of seedbeds so that

water drains into the channels.

Page 7: Introduction Well drained upland field with sandy loam soil near irrigation source is selected for bed preparation. 500m 2 nursery produces seedling sufficient

Seed Bed Preparation for SRI Nursery

• Raising seedlings in egg boxes filled with vermicompost or

organic manure is also advantageous.

• Conventional wet beds are commonly used for raising seedlings

by SRI method.

• Addition of organic manure before sowing is advisable.


Top Related