Monday, August 29, 2016

CROP PRODUCTION: RICE


RICE
Family – Graminae
Botamical name – Oryza sativa
Genus: Oryza
Specie: sativa
VARIETIES
There are two varieties of rice
i.             Upland rice
ii.           Swamp rice
Soil Requirement
Upland rice requires light, fertile sand loamy soil and slightly acidic PH of 5.5 to 6.0
Swamp rice requires loamy to heavy clay soil or water logged/riverine area.
CLIMATIC REQUIREMENT
1.   Temperature 200 – 300c
2.   Rainfall 75cm – 120cm for upland rice which must be evenly distributed. For swamp rice rainfall of over 250cm is required.
METHOD OF PROPAGATION
Its propagation is mainly by seed. It requires nursery planting. Swamp rice is firstly planted in the nursery then seedlings can be transplanted. It is planted manually and mechanically.
SEED RATE
For upland rice, we plant 4-5 seeds per hole at about 65kg hectare. But for swamp rice 2-3 seedlings per hole.
PLANTING DATE
 Its planting date is April – May in the southern part of the country and between June and August in the North.
PLANTING DISTANCE
25cm by 30cm
POST PLANTING OPERATION
1.   Thinning
2.   Supplying
3.   Fertilizer application: NP:K 50: 20: 20 or organic fertilizer before planting
4.   Weeding: It can be done manually or mechanically
MATURITY PERIOD
4- 7 months
Harvesting: Harvesting can be done by the use of knife, sickle or mechanically.
FARM LEVEL PROCESSING
1.   Drying: it can be done naturally or artificially
2.   Threshing: This is the removal of seed from stalk
3.   Winnowing: This is the separation of seed from shaft
4.   Parboiling: Heating of rice in hot water to break or open the seed coat/hust.
5.   Hulling/milling: This is the removal of seed coat from the grains
6.   Polishing: This is the removal of rice brown which is very rich in protein and vitamin.   
STORAGE
Rice is stored in bags
DISEASES
1.   Rice smut (Fungi disease)
2.   Rice blight (Fungi disease)
3.   Rice blast (Fungi disease)
4.   Leaves spot (Fungi disease)
5.   Root rot (Fungi disease)
PESTS OF RICE
1.   Weevils
2.   Birds
3.   Rodents
USES OF RICE
1.   For food/human consumption
2.   It is used as part of the ingredient for animal feed
3.   It is used for folder

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