This report describes standardized data for “Assessment of varieties of Cassava for high yield, high dry matter and disease resistance using NCRP Trial (18 clones) in Abuja 2018/2019 Breeding Season”. These data were standardized on 2024-09-18 by Robert Hijmans with this R script. The original data have a CC-BY license. Here you can download the standardized data.

This is the full citation of the data set:

Kulakow, Peter; Ismail Rabbi; Elizabeth Parkes; Chiedozie Egesi; Olufemi Aina; Prasad Peteti; Agbona Afolabi (2019). Assessment of varieties of Cassava for high yield, high dry matter and disease resistance using NCRP Trial (18 clones) in Abuja 2018/2019 Breeding Season. International Institute of Tropical Agriculture (IITA). Not versioned. doi:10.25502/QGCC-MS52

The dataset has 54 records and 27 variables for cassava in Nigeria. The dataset has 1 treatment(s): variety.


These are the first 25 records:

records
country location longitude latitude geo_from_source trial_id planting_date harvest_date on_farm is_survey rep crop variety variety_alt variety_code fwy_storage fwy_residue yield_part yield N_fertilizer P_fertilizer K_fertilizer irrigated plot_length plot_width
Nigeria Abuja 7.39857 9.07648 TRUE 18NCRPAB 2018-08-12 2019-08-12 FALSE FALSE 1 cassava IITA-TMS-IBA000070 NA 1936 1937.50 1875.00 roots 1937.50 NA NA NA NA 4 4
Nigeria Abuja 7.39857 9.07648 TRUE 18NCRPAB 2018-08-12 2019-08-12 FALSE FALSE 1 cassava IITA-TMS-IBA30572 NA 5 1187.50 1750.00 roots 1187.50 NA NA NA NA 4 4
Nigeria Abuja 7.39857 9.07648 TRUE 18NCRPAB 2018-08-12 2019-08-12 FALSE FALSE 1 cassava Local NA 797517 250.00 437.50 roots 250.00 NA NA NA NA 4 4
Nigeria Abuja 7.39857 9.07648 TRUE 18NCRPAB 2018-08-12 2019-08-12 FALSE FALSE 1 cassava NR095F NA 972736 750.00 968.75 roots 750.00 NA NA NA NA 4 4
Nigeria Abuja 7.39857 9.07648 TRUE 18NCRPAB 2018-08-12 2019-08-12 FALSE FALSE 1 cassava NR130022 NA 62326 375.00 1250.00 roots 375.00 NA NA NA NA 4 4
Nigeria Abuja 7.39857 9.07648 TRUE 18NCRPAB 2018-08-12 2019-08-12 FALSE FALSE 1 cassava NR130124 NA 62328 2531.25 1250.00 roots 2531.25 NA NA NA NA 4 4
Nigeria Abuja 7.39857 9.07648 TRUE 18NCRPAB 2018-08-12 2019-08-12 FALSE FALSE 1 cassava NR14B-218 NA 972737 1062.50 1281.25 roots 1062.50 NA NA NA NA 4 4
Nigeria Abuja 7.39857 9.07648 TRUE 18NCRPAB 2018-08-12 2019-08-12 FALSE FALSE 1 cassava NR1741 NA 972738 1750.00 1531.25 roots 1750.00 NA NA NA NA 4 4
Nigeria Abuja 7.39857 9.07648 TRUE 18NCRPAB 2018-08-12 2019-08-12 FALSE FALSE 1 cassava NR292D NA 972734 750.00 1875.00 roots 750.00 NA NA NA NA 4 4
Nigeria Abuja 7.39857 9.07648 TRUE 18NCRPAB 2018-08-12 2019-08-12 FALSE FALSE 1 cassava TMEB419 NA 39671 1625.00 1750.00 roots 1625.00 NA NA NA NA 4 4
Nigeria Abuja 7.39857 9.07648 TRUE 18NCRPAB 2018-08-12 2019-08-12 FALSE FALSE 1 cassava TMS13F1020P0001 NA 50975 1062.50 1750.00 roots 1062.50 NA NA NA NA 4 4
Nigeria Abuja 7.39857 9.07648 TRUE 18NCRPAB 2018-08-12 2019-08-12 FALSE FALSE 1 cassava TMS13F1053P0015 NA 51773 1500.00 812.50 roots 1500.00 NA NA NA NA 4 4
Nigeria Abuja 7.39857 9.07648 TRUE 18NCRPAB 2018-08-12 2019-08-12 FALSE FALSE 1 cassava TMS13F1153P0001 NA 50525 843.75 2375.00 roots 843.75 NA NA NA NA 4 4
Nigeria Abuja 7.39857 9.07648 TRUE 18NCRPAB 2018-08-12 2019-08-12 FALSE FALSE 1 cassava TMS13F1160P0004 NA 51984 1000.00 2250.00 roots 1000.00 NA NA NA NA 4 4
Nigeria Abuja 7.39857 9.07648 TRUE 18NCRPAB 2018-08-12 2019-08-12 FALSE FALSE 1 cassava TMS13F1307P0016 NA 50718 2187.50 1000.00 roots 2187.50 NA NA NA NA 4 4
Nigeria Abuja 7.39857 9.07648 TRUE 18NCRPAB 2018-08-12 2019-08-12 FALSE FALSE 1 cassava TMS13F1343P0022 NA 51500 2000.00 937.50 roots 2000.00 NA NA NA NA 4 4
Nigeria Abuja 7.39857 9.07648 TRUE 18NCRPAB 2018-08-12 2019-08-12 FALSE FALSE 1 cassava TMS13F1343P0044 NA 50781 2312.50 1250.00 roots 2312.50 NA NA NA NA 4 4
Nigeria Abuja 7.39857 9.07648 TRUE 18NCRPAB 2018-08-12 2019-08-12 FALSE FALSE 1 cassava TMS13F2110P0008 NA 51660 2500.00 1937.50 roots 2500.00 NA NA NA NA 4 4
Nigeria Abuja 7.39857 9.07648 TRUE 18NCRPAB 2018-08-12 2019-08-12 FALSE FALSE 2 cassava IITA-TMS-IBA000070 NA 1936 2000.00 1750.00 roots 2000.00 NA NA NA NA 4 4
Nigeria Abuja 7.39857 9.07648 TRUE 18NCRPAB 2018-08-12 2019-08-12 FALSE FALSE 2 cassava IITA-TMS-IBA30572 NA 5 812.50 2312.50 roots 812.50 NA NA NA NA 4 4
Nigeria Abuja 7.39857 9.07648 TRUE 18NCRPAB 2018-08-12 2019-08-12 FALSE FALSE 2 cassava Local NA 797517 343.75 718.75 roots 343.75 NA NA NA NA 4 4
Nigeria Abuja 7.39857 9.07648 TRUE 18NCRPAB 2018-08-12 2019-08-12 FALSE FALSE 2 cassava NR095F NA 972736 1562.50 1687.50 roots 1562.50 NA NA NA NA 4 4
Nigeria Abuja 7.39857 9.07648 TRUE 18NCRPAB 2018-08-12 2019-08-12 FALSE FALSE 2 cassava NR130022 NA 62326 1406.25 1937.50 roots 1406.25 NA NA NA NA 4 4
Nigeria Abuja 7.39857 9.07648 TRUE 18NCRPAB 2018-08-12 2019-08-12 FALSE FALSE 2 cassava NR130124 NA 62328 2187.50 1812.50 roots 2187.50 NA NA NA NA 4 4
Nigeria Abuja 7.39857 9.07648 TRUE 18NCRPAB 2018-08-12 2019-08-12 FALSE FALSE 2 cassava NR14B-218 NA 972737 1125.00 1625.00 roots 1125.00 NA NA NA NA 4 4


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


The standardization script does not emit non-compliance warnings.

The overall quality of the dataset, given the completeness of required variables was 5.6 on a scale of 10. See the table below

variable completeness (%)
planting_date 100
harvest_date 100
N_fertilizer 0
P_fertilizer 0
K_fertilizer 0
irrigated 0
latitude 100
longitude 100
location 100


The data are further summarized in the table below.

Variable Stats / Values Freqs (% of Valid) Graph Missing
country [character] 1. Nigeria
54(100.0%)
 0 (0.0%)
location [character] 1. Abuja
54(100.0%)
 0 (0.0%)
geo_from_source [logical] 1. TRUE
54(100.0%)
 0 (0.0%)
trial_id [character] 1. 18NCRPAB
54(100.0%)
 0 (0.0%)
planting_date [character] 1. 2018-08-12
54(100.0%)
 0 (0.0%)
harvest_date [character] 1. 2019-08-12
54(100.0%)
 0 (0.0%)
on_farm [logical] 1. FALSE
54(100.0%)
 0 (0.0%)
is_survey [logical] 1. FALSE
54(100.0%)
 0 (0.0%)
rep [integer]
Mean (sd) : 2 (0.8)
min ≤ med ≤ max:
1 ≤ 2 ≤ 3
IQR (CV) : 2 (0.4)
1:18(33.3%)
2:18(33.3%)
3:18(33.3%)
 0 (0.0%)
crop [character] 1. cassava
54(100.0%)
 0 (0.0%)
variety [character]
1. IITA-TMS-IBA000070
2. IITA-TMS-IBA30572
3. Local
4. NR095F
5. NR130022
6. NR130124
7. NR14B-218
8. NR1741
9. NR292D
10. TMEB419
[ 8 others ]
3(5.6%)
3(5.6%)
3(5.6%)
3(5.6%)
3(5.6%)
3(5.6%)
3(5.6%)
3(5.6%)
3(5.6%)
3(5.6%)
24(44.4%)
 0 (0.0%)
variety_alt [logical]
All NA's
 54 (100.0%)
variety_code [integer]
Mean (sd) : 292480.2 (405954.2)
min ≤ med ≤ max:
5 ≤ 51716.5 ≤ 972738
IQR (CV) : 746799 (1.4)
 18 distinct values 0 (0.0%)
fwy_storage [numeric]
Mean (sd) : 1560.8 (654.7)
min ≤ med ≤ max:
250 ≤ 1562.5 ≤ 2531.2
IQR (CV) : 1148.4 (0.4)
 32 distinct values 0 (0.0%)
fwy_residue [numeric]
Mean (sd) : 1550.9 (492.8)
min ≤ med ≤ max:
437.5 ≤ 1625 ≤ 2562.5
IQR (CV) : 781.2 (0.3)
 30 distinct values 0 (0.0%)
yield_part [character] 1. roots
54(100.0%)
 0 (0.0%)
yield [numeric]
Mean (sd) : 1560.8 (654.7)
min ≤ med ≤ max:
250 ≤ 1562.5 ≤ 2531.2
IQR (CV) : 1148.4 (0.4)
 32 distinct values 0 (0.0%)
N_fertilizer [logical]
All NA's
 54 (100.0%)
P_fertilizer [logical]
All NA's
 54 (100.0%)
K_fertilizer [logical]
All NA's
 54 (100.0%)
irrigated [logical]
All NA's
 54 (100.0%)
plot_length [integer] 1 distinct value
4:54(100.0%)
 0 (0.0%)
plot_width [integer] 1 distinct value
4:54(100.0%)
 0 (0.0%)