cassava
Cassava is the world’s fifth most important Root Crop after maize, rice, wheat and potato.
Which
belongs to family Euphorbiaceae.
Which
is a perennial crop & a hardy crop.
Cassava
originated in South America and expended wildly to Asia, Africa and being
cultivated in 105 countries.
Preferable
Climatic Conditions
High levels of humidity (70%)
High levels of temperature (25-28
◦ C)
High levels of solar
radiation(about 22 MJ per
day)
•Better growth in light sandy loams or on loamy sands
Nutritional Value
Cassava roots combine high energy and
high levels of some vitamins, minerals and dictary fibre and contain no
trypsin inhibitor, but create a problem due to presence of cyanide which
is removed by post-harvest treatments and cooking. The edible green
leaves of cassava are a good source of protein, vitamins and minerals
and are often used to augment the rural diet.
Nutritional values of Cassava
Component | Root tubers | Leaves |
Moisture % Energy (Kg/100g) Protein % Starch % Sugar % Dietary fibre % Ash % |
62.8 580 0.53 31.0 0.83 1.40 0.84 |
74.8 - 5.1 - - - 2.7 |
Minerals (mg/100g) Ca P Mg K S Fe |
20 46 30 302 6.4 0.23 |
350 56 - - - 218 |
Vitamins (mg/100g) Vit. A Thiamin Riboflavin Nicotinic acid Vit. C |
Trace 0.05 0.04 0.6 15.0 |
3 0.2 0.3 1.5 200 |
Growing situations
Although cassava is not a
nutritionally superior crop, from the agricultural point of view its
popularity among resource poor farmers is due to its remarkable
hardiness, drought resistance, relative freedom from pest attack and its
ability to give acceptable yields under unfavoured conditions with low
inputs and attention. It is mainly grown as a rainfed crop throughout
the island excluding high elevation areas and mostly concentrating in
the wet and intermediate zones.
In sri lanka
The production systems of cassava have
been identified as a backyard crop and large scale open-land cultivation
in the wet zone (Gampaha, Colombo, Kegalle, Rathnapura and Matara
Districts) as well as in the intermediate zone (Kurunegala district) are
mixed cropped with coconut and pineapple cultivations. Chena
cultivation in large scale in the dry zone (Putlam, Anuradhapura,
Ampara, Hambantota, Moneragala Districts) is viable. Peak production
falls during Maha season.
Recommended Varieties
Three improved cassava varieties
namely MU-51 (var. Peradeniya), CARI-555 and Kirikawadi having high
yield and acceptable horticultural qualities have been recommended for
cultivation. Besides these 3 varieties there are few farmer's selections
with better consumer acceptance that are being cultivated
Crop ManagementFertilizer Application
Urea | TSP | MOP | |
Basal | 80 | 120 | 80 |
TP-1 | 80 | --- | 80 |
TP-3 | 80 | --- | 80 |
Basal 10 to 12 days after planting
Top Dressing -1 6 to 8 Weeks after planting
Top Dressing -2 14 to16 Weeks after planting
Pest
Scale Insects
White fly
Mealy bug
Diseases
CMV virus
Circuspore Leaf spot
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if you want further details please sent me a message ....
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