Theory question 106
Agricultural Extension(a) Mention three print and three electronic media used in disseminating agricultural extension messages.
(b) State four advantages of group method of agricultural extension.
(c) Explain the term assembling as a marketing function.
(d) State one symptom and two control measures of each of the following crop diseases: (i) maize streak; (ii) groundnut rosette.
Show the model answer
(a) Print (three): newspapers; magazines; bulletins/leaflets; posters; handbills; journals. Electronic (three): radio; television; internet/social media; film shows; mobile phones (SMS).
(b) Any four: reaches many farmers at once; cheaper per farmer; farmers learn from each other; saves time of extension agents; encourages co-operative action; builds confidence to adopt innovations.
(c) Assembling is collecting small quantities of produce from many farmers into one place to make up large, economic quantities for sale or transport.
(d)(i) Maize streak: symptom – yellow/white streaks along the leaf veins, stunting; control – resistant varieties; early planting; control leafhoppers (vector); uproot and burn infected plants.
(ii) Groundnut rosette: symptom – stunted, bushy plants with small, mottled/yellow, crinkled leaves; control – resistant varieties; early and close planting; control aphids (vector); remove infected plants.
Name the insect vector in each control answer.