Table 5. Respondents historical major crops' percentage cover in Kenya and Uganda.

Study area	Crop	1970s	1980s	1990s	2000	2006
Western Kenya	Maize	24.4	31.2	36.2	41.8	40.8
	Cassava	28.2	31.2	34.0	31.2	30.3
	Finger millet	9.2	8.7	8.5	5.7	5.6
	Sorghum	6.9	3.6	4.3	5.7	4.9
	Bananas	2.3	1.4	2.8	3.5	3.5
	Tobacco	1.5	4.3	3.5	2.8	3.5
	Sweet potatoes		2.9	2.9	2.1	2.8
	Cotton	13.7	8.0	-	-	-
	Rice	1.4	1.4	0.7	-	0.7
Southeast Uganda	Maize	20.4	16.9	27.2	33.3	37.1
	Cassava	13.0	19.7	21.7	16.7	19.0
	Finger millet	35.2	33.8	29.3	28.3	21.0
	Sweet potatoes	5.6	7.0	2.2	4.0	6.7
	Sorghum	3.7	4.2	4.3	4.0	5.7
	Cotton	14.8	12.7	9.8	7.1	3.8
	Bananas	3.7	4.2	-	2	1.9
	Rice	-	-	-	1.0	1.9