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Horticultural News January - February issue

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Control: Spray the potato crop<br />

with a suitable insecticide and dust<br />

stored potatoes with a suitable<br />

insecticide.<br />

Cut worms: These cut the stems<br />

of emerging plants. Exposed tubers<br />

may also be damaged.<br />

Control: Spray with suitable<br />

insecticides.<br />

Leaf miners: These mine the<br />

leaves and cause tunnels. The<br />

yields of infected plants are<br />

severely reduced.<br />

!<br />

32<br />

Harvesting<br />

Highest yields are obtained by<br />

leaving potatoes in the ground<br />

until they mature. Hardening of<br />

the skin of tubers is made faster by<br />

cutting or pulling the haulm (stems<br />

and leaves) 10-14 days before<br />

harvesting of the crop. Harvest<br />

the crop using blunt objects like<br />

sticks so as to minimize damage<br />

to tubers.<br />

Grading and Storage<br />

remove misshapen, diseased,<br />

Kenya Agricultural Research Institute<br />

Strengthening Kenya’s food security & income<br />

Kaptagat Road, Loresho. P O Box 57811-00200, Nairobi Kenya. Tel+254 20 4183301-20<br />

Email:resource.centre@kari.org www.kari.org<br />

H O R T I C U LT U R A L N E W S I j a n u a r y - F E B r u a r y 2 0 1 2<br />

Harvesting, grading,<br />

storage and marketing<br />

greened and damaged tubers before<br />

packing potatoes for sale or storage.<br />

Potatoes can be graded by sizes into<br />

baby potatoes (less than 30 mm),<br />

small (30-45 mm), medium (45-65<br />

mm) and large (65-80 mm). Keep<br />

tubers for eating in dark stores to<br />

prevent greening. The store should<br />

be cool with enough circulation of<br />

air.<br />

Marketing<br />

Marketing of potatoes is<br />

generally the responsibility of the<br />

grower and is characterized by a<br />

strong presence of brokers. Farmers<br />

may enter into contracts to supply<br />

processors with desired potato<br />

varieties. according to legal notice<br />

no. 44 of 2005, ware potatoes for<br />

trade should sorted and graded<br />

and only be packaged in sisal or jute<br />

bags. The size of such a bag should<br />

be enough to accommodate ware<br />

potato of 110 kg. The legal notice<br />

no. 113 of 2008, empowers local<br />

authorities to enforce the regulations<br />

on ware potato packaging.

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