This report describes the the Carob “varieties_cassava” group.

This dataset combines 1467 standardized individual data sources. It has has 138753 records and 34 variables for 2 crops (, cassava) in 14 countries (, Benin, Burkina Faso, Burundi, Chad, Democratic Republic of the Congo, Ghana, Malawi, Niger, Nigeria, Tanzania, Togo, Uganda, Zambia).


These are the first 25 records:

records
dataset_id record_id trial_id planting_date harvest_date on_farm is_survey rep crop variety variety_alt variety_code dmy_roots dmy_storage fwy_storage fwy_residue yield_part yield yield_moisture N_fertilizer P_fertilizer K_fertilizer inoculated irrigated plot_area plot_length plot_width harvest_index country adm1 location longitude latitude geo_from_source
doi_10.25502_008Q-F311 1 01uyt20lcnMK 2001-07-03 2002-08-24 FALSE FALSE 1 cassava IITA-TMS-BAD9100462 39770 NA NA NA NA roots NA 67.8 NA NA NA NA NA NA NA NA NA Nigeria Mokwa 5.31025 9.23942 TRUE
doi_10.25502_008Q-F311 2 01uyt20lcnMK 2001-07-03 2002-08-24 FALSE FALSE 1 cassava IITA-TMS-IBA30572 5 NA NA NA NA roots NA 59.2 NA NA NA NA NA NA NA NA NA Nigeria Mokwa 5.31025 9.23942 TRUE
doi_10.25502_008Q-F311 3 01uyt20lcnMK 2001-07-03 2002-08-24 FALSE FALSE 1 cassava IITA-TMS-IBA4(2)1425 246 NA NA NA NA roots NA 67.9 NA NA NA NA NA NA NA NA NA Nigeria Mokwa 5.31025 9.23942 TRUE
doi_10.25502_008Q-F311 4 01uyt20lcnMK 2001-07-03 2002-08-24 FALSE FALSE 1 cassava IITA-TMS-IBA71762 95781 NA NA NA NA roots NA 68.1 NA NA NA NA NA NA NA NA NA Nigeria Mokwa 5.31025 9.23942 TRUE
doi_10.25502_008Q-F311 5 01uyt20lcnMK 2001-07-03 2002-08-24 FALSE FALSE 1 cassava IITA-TMS-IBA8200058 268 NA NA NA NA roots NA 69.6 NA NA NA NA NA NA NA NA NA Nigeria Mokwa 5.31025 9.23942 TRUE
doi_10.25502_008Q-F311 6 01uyt20lcnMK 2001-07-03 2002-08-24 FALSE FALSE 1 cassava IITA-TMS-IBA9100416 338 NA NA NA NA roots NA 61.7 NA NA NA NA NA NA NA NA NA Nigeria Mokwa 5.31025 9.23942 TRUE
doi_10.25502_008Q-F311 7 01uyt20lcnMK 2001-07-03 2002-08-24 FALSE FALSE 1 cassava IITA-TMS-IBA9102312 362 NA NA NA NA roots NA 57.8 NA NA NA NA NA NA NA NA NA Nigeria Mokwa 5.31025 9.23942 TRUE
doi_10.25502_008Q-F311 8 01uyt20lcnMK 2001-07-03 2002-08-24 FALSE FALSE 1 cassava IITA-TMS-IBA9102324 374 NA NA NA NA roots NA 63.6 NA NA NA NA NA NA NA NA NA Nigeria Mokwa 5.31025 9.23942 TRUE
doi_10.25502_008Q-F311 9 01uyt20lcnMK 2001-07-03 2002-08-24 FALSE FALSE 1 cassava IITA-TMS-IBA920057 390 NA NA NA NA roots NA 58.6 NA NA NA NA NA NA NA NA NA Nigeria Mokwa 5.31025 9.23942 TRUE
doi_10.25502_008Q-F311 10 01uyt20lcnMK 2001-07-03 2002-08-24 FALSE FALSE 1 cassava IITA-TMS-IBA920326 396 NA NA NA NA roots NA 62.0 NA NA NA NA NA NA NA NA NA Nigeria Mokwa 5.31025 9.23942 TRUE
doi_10.25502_008Q-F311 11 01uyt20lcnMK 2001-07-03 2002-08-24 FALSE FALSE 1 cassava IITA-TMS-IBA920342 398 NA NA NA NA roots NA 58.2 NA NA NA NA NA NA NA NA NA Nigeria Mokwa 5.31025 9.23942 TRUE
doi_10.25502_008Q-F311 12 01uyt20lcnMK 2001-07-03 2002-08-24 FALSE FALSE 1 cassava IITA-TMS-IBA920397 400 NA NA NA NA roots NA 60.6 NA NA NA NA NA NA NA NA NA Nigeria Mokwa 5.31025 9.23942 TRUE
doi_10.25502_008Q-F311 13 01uyt20lcnMK 2001-07-03 2002-08-24 FALSE FALSE 1 cassava IITA-TMS-IBA920398 402 NA NA NA NA roots NA 63.3 NA NA NA NA NA NA NA NA NA Nigeria Mokwa 5.31025 9.23942 TRUE
doi_10.25502_008Q-F311 14 01uyt20lcnMK 2001-07-03 2002-08-24 FALSE FALSE 1 cassava IITA-TMS-IBA920429 409 NA NA NA NA roots NA 58.3 NA NA NA NA NA NA NA NA NA Nigeria Mokwa 5.31025 9.23942 TRUE
doi_10.25502_008Q-F311 15 01uyt20lcnMK 2001-07-03 2002-08-24 FALSE FALSE 1 cassava IITA-TMS-IBA920430 411 NA NA NA NA roots NA 65.4 NA NA NA NA NA NA NA NA NA Nigeria Mokwa 5.31025 9.23942 TRUE
doi_10.25502_008Q-F311 16 01uyt20lcnMK 2001-07-03 2002-08-24 FALSE FALSE 1 cassava IITA-TMS-IBA940018 489 NA NA NA NA roots NA 61.1 NA NA NA NA NA NA NA NA NA Nigeria Mokwa 5.31025 9.23942 TRUE
doi_10.25502_008Q-F311 17 01uyt20lcnMK 2001-07-03 2002-08-24 FALSE FALSE 1 cassava IITA-TMS-IBA940020 491 NA NA NA NA roots NA 59.1 NA NA NA NA NA NA NA NA NA Nigeria Mokwa 5.31025 9.23942 TRUE
doi_10.25502_008Q-F311 18 01uyt20lcnMK 2001-07-03 2002-08-24 FALSE FALSE 1 cassava IITA-TMS-IBA940026 493 NA NA NA NA roots NA 72.3 NA NA NA NA NA NA NA NA NA Nigeria Mokwa 5.31025 9.23942 TRUE
doi_10.25502_008Q-F311 19 01uyt20lcnMK 2001-07-03 2002-08-24 FALSE FALSE 1 cassava IITA-TMS-IBA940237 7 NA NA NA NA roots NA 60.1 NA NA NA NA NA NA NA NA NA Nigeria Mokwa 5.31025 9.23942 TRUE
doi_10.25502_008Q-F311 20 01uyt20lcnMK 2001-07-03 2002-08-24 FALSE FALSE 1 cassava TMEB1 39629 NA NA NA NA roots NA 55.7 NA NA NA NA NA NA NA NA NA Nigeria Mokwa 5.31025 9.23942 TRUE
doi_10.25502_008Q-F311 21 01uyt20lcnMK 2001-07-03 2002-08-24 FALSE FALSE 2 cassava IITA-TMS-BAD9100462 39770 NA NA NA NA roots NA 55.3 NA NA NA NA NA NA NA NA NA Nigeria Mokwa 5.31025 9.23942 TRUE
doi_10.25502_008Q-F311 22 01uyt20lcnMK 2001-07-03 2002-08-24 FALSE FALSE 2 cassava IITA-TMS-IBA30572 5 NA NA NA NA roots NA 61.5 NA NA NA NA NA NA NA NA NA Nigeria Mokwa 5.31025 9.23942 TRUE
doi_10.25502_008Q-F311 23 01uyt20lcnMK 2001-07-03 2002-08-24 FALSE FALSE 2 cassava IITA-TMS-IBA4(2)1425 246 NA NA NA NA roots NA 57.9 NA NA NA NA NA NA NA NA NA Nigeria Mokwa 5.31025 9.23942 TRUE
doi_10.25502_008Q-F311 24 01uyt20lcnMK 2001-07-03 2002-08-24 FALSE FALSE 2 cassava IITA-TMS-IBA71762 95781 NA NA NA NA roots NA 61.9 NA NA NA NA NA NA NA NA NA Nigeria Mokwa 5.31025 9.23942 TRUE
doi_10.25502_008Q-F311 25 01uyt20lcnMK 2001-07-03 2002-08-24 FALSE FALSE 2 cassava IITA-TMS-IBA8200058 268 NA NA NA NA roots NA 64.1 NA NA NA NA NA NA NA NA NA Nigeria Mokwa 5.31025 9.23942 TRUE


You can see the contributing datasets here if you use the search term for [varieties_cassava].


We have 138753 observations, for which we have 1474 unique mapped locations. 6 records do not have coordinates.


The data are further summarized in the table below

Variable Stats / Values Freqs (% of Valid) Graph Missing
planting_date [character]
1. 2006
2. 1995
3. 1994
4. 1996
5. 2003
6. 2007
7. 1993
8. 2009
9. 1998
10. 1999
[ 754 others ]
5713(4.1%)
4651(3.4%)
4190(3.0%)
4189(3.0%)
2490(1.8%)
1841(1.3%)
1771(1.3%)
1234(0.9%)
1208(0.9%)
1181(0.9%)
110285(79.5%)
 0 (0.0%)
harvest_date [IDate, Date]
min : 1994-05-08
med : 2003-06-26
max : 2020-09-22
range : 26y 4m 14d
 721 distinct values 43231 (31.2%)
on_farm [logical]
1. FALSE
2. TRUE
136991(98.7%)
1756(1.3%)
 6 (0.0%)
is_survey [logical] 1. FALSE
138747(100.0%)
 6 (0.0%)
rep [integer]
Mean (sd) : 2.5 (10.8)
min ≤ med ≤ max:
1 ≤ 2 ≤ 425
IQR (CV) : 2 (4.3)
 237 distinct values 87 (0.1%)
crop [character]
1. (Empty string)
2. cassava
6(0.0%)
138747(100.0%)
 0 (0.0%)
variety [character]
1. IITA-TMS-IBA30572
2. IITA-TMS-IBA9102324
3. IITA-TMS-IBA4(2)1425
4. TMEB1
5. IITA-TMS-IBA920326
6. IITA-TMS-IBA8200058
7. TMEB419
8. IITA-TMS-IBA980581
9. IITA-TMS-IBA920057
10. TMEB117
[ 19957 others ]
3585(2.6%)
1913(1.4%)
1825(1.3%)
1721(1.2%)
1325(1.0%)
1315(0.9%)
884(0.6%)
814(0.6%)
774(0.6%)
759(0.5%)
123838(89.3%)
 0 (0.0%)
variety_alt [character]
1. (Empty string)
2. ABBEY-IFE,BGM-2279,T
3. 30572,I30572,IBA3057
4. RB98/0113,TME204
5. Akena,Akena,I92/0067
6. Unknown
7. MH97/2961,MH972961
8. MM97/0516,MM970516
9. GUZO,MOMBASA
10. 82/00058,I8200058,TM
[ 49 others ]
138398(99.7%)
24(0.0%)
23(0.0%)
19(0.0%)
16(0.0%)
12(0.0%)
11(0.0%)
11(0.0%)
9(0.0%)
8(0.0%)
222(0.2%)
 0 (0.0%)
variety_code [character]
1. 5
2. 374
3. 246
4. 39629
5. 396
6. 268
7. 39671
8. 723
9. 390
10. 39632
[ 19968 others ]
3583(2.6%)
1913(1.4%)
1825(1.3%)
1721(1.2%)
1325(1.0%)
1315(0.9%)
882(0.6%)
814(0.6%)
774(0.6%)
759(0.5%)
123842(89.3%)
 0 (0.0%)
dmy_roots [numeric]
Mean (sd) : 1610 (1100.2)
min ≤ med ≤ max:
55.9 ≤ 1498.3 ≤ 4783.6
IQR (CV) : 1207.5 (0.7)
 42 distinct values 138711 (100.0%)
dmy_storage [numeric]
Mean (sd) : 4.5 (4.5)
min ≤ med ≤ max:
0 ≤ 3.5 ≤ 135.7
IQR (CV) : 4.5 (1)
 2978 distinct values 101714 (73.3%)
fwy_storage [numeric]
Mean (sd) : 12791.8 (12478.3)
min ≤ med ≤ max:
0 ≤ 10000 ≤ 336000
IQR (CV) : 14917.5 (1)
 2638 distinct values 75295 (54.3%)
fwy_residue [numeric]
Mean (sd) : 1773.7 (1831.8)
min ≤ med ≤ max:
0 ≤ 1312.5 ≤ 75625
IQR (CV) : 1468.8 (1)
 1445 distinct values 122034 (88.0%)
yield_part [character]
1. (Empty string)
2. roots
3. tubers
6(0.0%)
138666(99.9%)
81(0.1%)
 0 (0.0%)
yield [numeric]
Mean (sd) : 12462.2 (12532.3)
min ≤ med ≤ max:
0 ≤ 9600 ≤ 336000
IQR (CV) : 14936.2 (1)
 3079 distinct values 75258 (54.2%)
yield_moisture [numeric]
Mean (sd) : 67.5 (13.6)
min ≤ med ≤ max:
-340.1 ≤ 68 ≤ 100
IQR (CV) : 10.2 (0.2)
 2616 distinct values 78494 (56.6%)
N_fertilizer [logical]
All NA's
 138753 (100.0%)
P_fertilizer [logical]
All NA's
 138753 (100.0%)
K_fertilizer [logical]
All NA's
 138753 (100.0%)
inoculated [logical] 1. FALSE
187(100.0%)
 138566 (99.9%)
irrigated [logical]
All NA's
 138753 (100.0%)
plot_area [integer] 1 distinct value
8:28(100.0%)
 138725 (100.0%)
plot_length [numeric]
Mean (sd) : 5.2 (1.6)
min ≤ med ≤ max:
2.5 ≤ 5 ≤ 9
IQR (CV) : 1.5 (0.3)
 10 distinct values 111695 (80.5%)
plot_width [integer]
Mean (sd) : 2.9 (1.6)
min ≤ med ≤ max:
1 ≤ 4 ≤ 6
IQR (CV) : 3 (0.6)
1:9330(34.5%)
2:3302(12.2%)
3:258(1.0%)
4:11653(43.1%)
5:615(2.3%)
6:1900(7.0%)
 111695 (80.5%)
harvest_index [numeric]
Mean (sd) : 0.6 (1.4)
min ≤ med ≤ max:
0 ≤ 0.5 ≤ 54.5
IQR (CV) : 0.2 (2.4)
 1274 distinct values 104757 (75.5%)
country [character]
1. Nigeria
2. Uganda
3. Ghana
4. Togo
5. Benin
6. Niger
7. Burkina Faso
8. Tanzania
9. Chad
10. Malawi
[ 4 others ]
120119(86.6%)
10436(7.5%)
2949(2.1%)
2084(1.5%)
1296(0.9%)
622(0.4%)
526(0.4%)
308(0.2%)
134(0.1%)
117(0.1%)
162(0.1%)
 0 (0.0%)
adm1 [character]
1. (Empty string)
2. Delta
3. Edo
4. Rivers
137184(98.9%)
285(0.2%)
597(0.4%)
687(0.5%)
 0 (0.0%)
location [character]
1. Ibadan
2. Mokwa
3. Ubiaja
4. Zaria
5. Namulonge
6. Ikenne
7. Malam Madori
8. Warri
9. Serere
10. Onne
[ 111 others ]
50960(36.7%)
17642(12.7%)
10010(7.2%)
8411(6.1%)
7082(5.1%)
6977(5.0%)
4962(3.6%)
4456(3.2%)
3303(2.4%)
2908(2.1%)
22042(15.9%)
 0 (0.0%)
geo_from_source [logical]
1. FALSE
2. TRUE
187(0.1%)
138560(99.9%)
 6 (0.0%)