Table 1.

Results of the reference analysis of leaf crude protein (%) content across different cowpea accessions collected from various environments in Tanzania and Uganda, as well as harvests and processing and description of laboratory replicate variances.

	N	Mean	SD	Min	Max
Overall	561	33.4	3.4	21.5	43.7
Location
AVRDC-RCA	173	34.8	4.0	25.5	43.7
Dodoma	39	34.3	1.4	31.5	36.9
Majimoto	39	30.9	2.2	26.7	36.6
Mwanga	66	34.0	2.0	28.7	39.2
Serere	31	33.0	2.1	29.4	38.6
Morogoro	36	34.4	2.4	30.0	38.8
Grinder
Coffee	130	33.2	4.0	21.8	43.7
Laboratory	431	33.5	3.3	21.5	42.6
Leaf harvest1
First	87	37.1	2.7	31.4	43.7
Second	285	32.0	2.5	26.2	38.8
Third	41	34.1	3.2	25.5	39.3
Fourth	36	34.9	2.7	27.3	39.2
Fifth	4	37.4	1.0	36.1	38.5

¹The total number of “leaf harvest” is 453 instead of 561 because the cowpea leaf samples obtained from markets could not be classified according to this category as most of samples obtained included uprooted whole plants or cowpea leaves that could not be determined whether they were from first, second, etc., harvest.