This report describes standardized data for “Biofortification of Cassava using Uniform Yield Trial (21 clones) in Ibadan 2008/2009 Breeding Season.”. These data were standardized on 2024-09-05 by Cedric Ngakou with this R script. The original data are available here under a CC-BY license.

This is the full citation of the data set:

Kulakow, Peter; Ismail Rabbi; Elizabeth Parkes; Chiedozie Egesi; Olufemi Aina; Prasad Peteti; Agbona Afolabi (2020). Biofortification of Cassava using Uniform Yield Trial (21 clones) in Ibadan 2008/2009 Breeding Season. International Institute of Tropical Agriculture (IITA). doi:10.25502/CZBT-4Y79

The dataset has 78 records and 23 variables for cassava in Nigeria.


These are the first 25 records:

records
dataset_id trial_id record_id country location longitude latitude geo_from_source planting_date on_farm is_survey rep crop variety_code dmy_roots yield_part yield N_fertilizer P_fertilizer K_fertilizer inoculated irrigated harvest_index
doi_10.25502_CZBT-4Y79 2009-uyt21yrt6Ib-rep1-IITA-TMS-IBA011368 1 Nigeria Ibadan 3.897 7.3786 FALSE 2008-07-09 TRUE FALSE 1 cassava IITA-TMS-IBA011368 4783.62500 roots 17750.0 NA NA NA FALSE NA 0.4409938
doi_10.25502_CZBT-4Y79 2009-uyt21yrt6Ib-rep1-IITA-TMS-IBA011371 2 Nigeria Ibadan 3.897 7.3786 FALSE 2008-07-09 TRUE FALSE 1 cassava IITA-TMS-IBA011371 2378.52500 roots 11125.0 NA NA NA FALSE NA 0.4139535
doi_10.25502_CZBT-4Y79 2009-uyt21yrt6Ib-rep1-IITA-TMS-IBA060889 3 Nigeria Ibadan 3.897 7.3786 FALSE 2008-07-09 TRUE FALSE 1 cassava IITA-TMS-IBA060889 1927.25000 roots 6500.0 NA NA NA FALSE NA 0.3537415
doi_10.25502_CZBT-4Y79 2009-uyt21yrt6Ib-rep1-IITA-TMS-IBA061635 4 Nigeria Ibadan 3.897 7.3786 FALSE 2008-07-09 TRUE FALSE 1 cassava IITA-TMS-IBA061635 2043.91250 roots 8875.0 NA NA NA FALSE NA 0.4152047
doi_10.25502_CZBT-4Y79 2009-uyt21yrt6Ib-rep1-IITA-TMS-IBA070481 5 Nigeria Ibadan 3.897 7.3786 FALSE 2008-07-09 TRUE FALSE 1 cassava IITA-TMS-IBA070481 2154.37500 roots 9375.0 NA NA NA FALSE NA 0.5357143
doi_10.25502_CZBT-4Y79 2009-uyt21yrt6Ib-rep1-IITA-TMS-IBA070498 6 Nigeria Ibadan 3.897 7.3786 FALSE 2008-07-09 TRUE FALSE 1 cassava IITA-TMS-IBA070498 1033.31250 roots 5625.0 NA NA NA FALSE NA 0.3214286
doi_10.25502_CZBT-4Y79 2009-uyt21yrt6Ib-rep1-IITA-TMS-IBA070520 7 Nigeria Ibadan 3.897 7.3786 FALSE 2008-07-09 TRUE FALSE 1 cassava IITA-TMS-IBA070520 2025.91250 roots 8375.0 NA NA NA FALSE NA 0.4557823
doi_10.25502_CZBT-4Y79 2009-uyt21yrt6Ib-rep1-IITA-TMS-IBA070525 8 Nigeria Ibadan 3.897 7.3786 FALSE 2008-07-09 TRUE FALSE 1 cassava IITA-TMS-IBA070525 1671.45000 roots 8250.0 NA NA NA FALSE NA 0.3975904
doi_10.25502_CZBT-4Y79 2009-uyt21yrt6Ib-rep1-IITA-TMS-IBA070534 9 Nigeria Ibadan 3.897 7.3786 FALSE 2008-07-09 TRUE FALSE 1 cassava IITA-TMS-IBA070534 1519.77500 roots 9250.0 NA NA NA FALSE NA 0.4966443
doi_10.25502_CZBT-4Y79 2009-uyt21yrt6Ib-rep1-IITA-TMS-IBA070539 10 Nigeria Ibadan 3.897 7.3786 FALSE 2008-07-09 TRUE FALSE 1 cassava IITA-TMS-IBA070539 3361.72500 roots 12562.5 NA NA NA FALSE NA 0.4456763
doi_10.25502_CZBT-4Y79 2009-uyt21yrt6Ib-rep1-IITA-TMS-IBA070553 11 Nigeria Ibadan 3.897 7.3786 FALSE 2008-07-09 TRUE FALSE 1 cassava IITA-TMS-IBA070553 4096.62500 roots 16250.0 NA NA NA FALSE NA 0.5098039
doi_10.25502_CZBT-4Y79 2009-uyt21yrt6Ib-rep1-IITA-TMS-IBA070576 12 Nigeria Ibadan 3.897 7.3786 FALSE 2008-07-09 TRUE FALSE 1 cassava IITA-TMS-IBA070576 1133.47500 roots 5250.0 NA NA NA FALSE NA 0.2592593
doi_10.25502_CZBT-4Y79 2009-uyt21yrt6Ib-rep1-IITA-TMS-IBA070593 13 Nigeria Ibadan 3.897 7.3786 FALSE 2008-07-09 TRUE FALSE 1 cassava IITA-TMS-IBA070593 1610.96250 roots 6375.0 NA NA NA FALSE NA 0.3695652
doi_10.25502_CZBT-4Y79 2009-uyt21yrt6Ib-rep1-IITA-TMS-IBA070628 14 Nigeria Ibadan 3.897 7.3786 FALSE 2008-07-09 TRUE FALSE 1 cassava IITA-TMS-IBA070628 735.67500 roots 4250.0 NA NA NA FALSE NA 0.4533333
doi_10.25502_CZBT-4Y79 2009-uyt21yrt6Ib-rep1-IITA-TMS-IBA070632 15 Nigeria Ibadan 3.897 7.3786 FALSE 2008-07-09 TRUE FALSE 1 cassava IITA-TMS-IBA070632 550.27500 roots 2750.0 NA NA NA FALSE NA 0.3548387
doi_10.25502_CZBT-4Y79 2009-uyt21yrt6Ib-rep1-IITA-TMS-IBA070749 16 Nigeria Ibadan 3.897 7.3786 FALSE 2008-07-09 TRUE FALSE 1 cassava IITA-TMS-IBA070749 2112.80000 roots 8000.0 NA NA NA FALSE NA 0.4155844
doi_10.25502_CZBT-4Y79 2009-uyt21yrt6Ib-rep1-IITA-TMS-IBA070824 17 Nigeria Ibadan 3.897 7.3786 FALSE 2008-07-09 TRUE FALSE 1 cassava IITA-TMS-IBA070824 2102.40000 roots 9125.0 NA NA NA FALSE NA 0.2885375
doi_10.25502_CZBT-4Y79 2009-uyt21yrt6Ib-rep1-IITA-TMS-IBA070874 18 Nigeria Ibadan 3.897 7.3786 FALSE 2008-07-09 TRUE FALSE 1 cassava IITA-TMS-IBA070874 316.50000 roots 1250.0 NA NA NA FALSE NA 0.1694915
doi_10.25502_CZBT-4Y79 2009-uyt21yrt6Ib-rep1-IITA-TMS-IBA070952 19 Nigeria Ibadan 3.897 7.3786 FALSE 2008-07-09 TRUE FALSE 1 cassava IITA-TMS-IBA070952 76.59375 roots 312.5 NA NA NA FALSE NA 0.1428571
doi_10.25502_CZBT-4Y79 2009-uyt21yrt6Ib-rep1-IITA-TMS-IBA070962 20 Nigeria Ibadan 3.897 7.3786 FALSE 2008-07-09 TRUE FALSE 1 cassava IITA-TMS-IBA070962 1432.80000 roots 6000.0 NA NA NA FALSE NA 0.2696629
doi_10.25502_CZBT-4Y79 2009-uyt21yrt6Ib-rep1-IITA-TMS-IBA070999 21 Nigeria Ibadan 3.897 7.3786 FALSE 2008-07-09 TRUE FALSE 1 cassava IITA-TMS-IBA070999 294.52500 roots 1375.0 NA NA NA FALSE NA 0.1666667
doi_10.25502_CZBT-4Y79 2009-uyt21yrt6Ib-rep2-IITA-TMS-IBA011368 22 Nigeria Ibadan 3.897 7.3786 FALSE 2008-07-09 TRUE FALSE 2 cassava IITA-TMS-IBA011368 3808.00000 roots 14875.0 NA NA NA FALSE NA 0.4311594
doi_10.25502_CZBT-4Y79 2009-uyt21yrt6Ib-rep2-IITA-TMS-IBA011371 23 Nigeria Ibadan 3.897 7.3786 FALSE 2008-07-09 TRUE FALSE 2 cassava IITA-TMS-IBA011371 2098.03125 roots 8687.5 NA NA NA FALSE NA 0.3766938
doi_10.25502_CZBT-4Y79 2009-uyt21yrt6Ib-rep2-IITA-TMS-IBA060889 24 Nigeria Ibadan 3.897 7.3786 FALSE 2008-07-09 TRUE FALSE 2 cassava IITA-TMS-IBA060889 941.65000 roots 4625.0 NA NA NA FALSE NA 0.3363636
doi_10.25502_CZBT-4Y79 2009-uyt21yrt6Ib-rep2-IITA-TMS-IBA061635 25 Nigeria Ibadan 3.897 7.3786 FALSE 2008-07-09 TRUE FALSE 2 cassava IITA-TMS-IBA061635 1670.62500 roots 6250.0 NA NA NA FALSE NA 0.4347826


The dataset has 21 treatments:

treatments
variety_code
IITA-TMS-IBA011368
IITA-TMS-IBA011371
IITA-TMS-IBA060889
IITA-TMS-IBA061635
IITA-TMS-IBA070481
IITA-TMS-IBA070498
IITA-TMS-IBA070520
IITA-TMS-IBA070525
IITA-TMS-IBA070534
IITA-TMS-IBA070539
IITA-TMS-IBA070553
IITA-TMS-IBA070576
IITA-TMS-IBA070593
IITA-TMS-IBA070628
IITA-TMS-IBA070632
IITA-TMS-IBA070749
IITA-TMS-IBA070824
IITA-TMS-IBA070874
IITA-TMS-IBA070952
IITA-TMS-IBA070962
IITA-TMS-IBA070999

The observations are for 1 locations, for which we have 1 unique mapped locations.


The data are further summarized in the table below

Variable Stats / Values Freqs (% of Valid) Graph Missing
dataset_id [character] 1. doi_10.25502_CZBT-4Y
78(100.0%)
 0 (0.0%)
trial_id [character]
1. 2009-uyt21yrt6Ib-rep
2. 2009-uyt21yrt6Ib-rep
3. 2009-uyt21yrt6Ib-rep
4. 2009-uyt21yrt6Ib-rep
5. 2009-uyt21yrt6Ib-rep
6. 2009-uyt21yrt6Ib-rep
7. 2009-uyt21yrt6Ib-rep
8. 2009-uyt21yrt6Ib-rep
9. 2009-uyt21yrt6Ib-rep
10. 2009-uyt21yrt6Ib-rep
[ 68 others ]
1(1.3%)
1(1.3%)
1(1.3%)
1(1.3%)
1(1.3%)
1(1.3%)
1(1.3%)
1(1.3%)
1(1.3%)
1(1.3%)
68(87.2%)
 0 (0.0%)
record_id [integer]
Mean (sd) : 39.5 (22.7)
min ≤ med ≤ max:
1 ≤ 39.5 ≤ 78
IQR (CV) : 38.5 (0.6)
 78 distinct values (Integer sequence) 0 (0.0%)
country [character] 1. Nigeria
78(100.0%)
 0 (0.0%)
location [character] 1. Ibadan
78(100.0%)
 0 (0.0%)
geo_from_source [logical] 1. FALSE
78(100.0%)
 0 (0.0%)
planting_date [character] 1. 2008-07-09
78(100.0%)
 0 (0.0%)
on_farm [logical] 1. TRUE
78(100.0%)
 0 (0.0%)
is_survey [logical] 1. FALSE
78(100.0%)
 0 (0.0%)
rep [integer]
Mean (sd) : 2.4 (1.1)
min ≤ med ≤ max:
1 ≤ 2 ≤ 4
IQR (CV) : 2 (0.5)
1:21(26.9%)
2:21(26.9%)
3:18(23.1%)
4:18(23.1%)
 0 (0.0%)
crop [character] 1. cassava
78(100.0%)
 0 (0.0%)
variety_code [character]
1. IITA-TMS-IBA011368
2. IITA-TMS-IBA011371
3. IITA-TMS-IBA060889
4. IITA-TMS-IBA061635
5. IITA-TMS-IBA070498
6. IITA-TMS-IBA070520
7. IITA-TMS-IBA070525
8. IITA-TMS-IBA070534
9. IITA-TMS-IBA070539
10. IITA-TMS-IBA070553
[ 11 others ]
4(5.1%)
4(5.1%)
4(5.1%)
4(5.1%)
4(5.1%)
4(5.1%)
4(5.1%)
4(5.1%)
4(5.1%)
4(5.1%)
38(48.7%)
 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 36 (46.2%)
yield_part [character] 1. roots
78(100.0%)
 0 (0.0%)
yield [numeric]
Mean (sd) : 6243.6 (4096.9)
min ≤ med ≤ max:
250 ≤ 5812.5 ≤ 17875
IQR (CV) : 5031.2 (0.7)
 62 distinct values 0 (0.0%)
N_fertilizer [logical]
All NA's
 78 (100.0%)
P_fertilizer [logical]
All NA's
 78 (100.0%)
K_fertilizer [logical]
All NA's
 78 (100.0%)
inoculated [logical] 1. FALSE
78(100.0%)
 0 (0.0%)
irrigated [logical]
All NA's
 78 (100.0%)
harvest_index [numeric]
Mean (sd) : 0.3 (0.1)
min ≤ med ≤ max:
0.1 ≤ 0.4 ≤ 0.5
IQR (CV) : 0.2 (0.3)
 40 distinct values 36 (46.2%)