This report describes standardized data for “Assessment of White root varieties of Cassava for high yield, high dry matter and disease resistance using NCRP Trial (16 clones) in Abuja 2018/2019 Breeding Season advanced from repeat of 2017ncrpfrom 2016(ayt11(derivative of 15ik.uyt19yrt,ayt18htc”. 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 White root varieties of Cassava for high yield, high dry matter and disease resistance using NCRP Trial (16 clones) in Abuja 2018/2019 Breeding Season advanced from repeat of 2017ncrpfrom 2016(ayt11(derivative of 15ik.uyt19yrt,ayt18htc. International Institute of Tropical Agriculture (IITA). Not versioned. doi:10.25502/J1WH-T233

The dataset has 48 records and 27 variables for cassava in Nigeria. The dataset has 1 treatment(s): variety.


These are the first 25 records:

records
trial_id planting_date harvest_date on_farm is_survey rep crop variety variety_alt variety_code fwy_storage yield_part yield yield_moisture N_fertilizer P_fertilizer K_fertilizer irrigated plot_length plot_width country location longitude latitude geo_from_source
18NCRP16yrtAB 2018-07-27 2019-07-27 FALSE FALSE 1 cassava IITA-TMS-IBA011797 NA 4957 22700 roots 22700 NA NA NA NA NA 4 6 Nigeria Abuja 7.39857 9.07648 TRUE
18NCRP16yrtAB 2018-07-27 2019-07-27 FALSE FALSE 1 cassava IITA-TMS-IBA070539 NA 29531 8600 roots 8600 NA NA NA NA NA 4 6 Nigeria Abuja 7.39857 9.07648 TRUE
18NCRP16yrtAB 2018-07-27 2019-07-27 FALSE FALSE 1 cassava IITA-TMS-IBA070593 NA 29557 24600 roots 24600 NA NA NA NA NA 4 6 Nigeria Abuja 7.39857 9.07648 TRUE
18NCRP16yrtAB 2018-07-27 2019-07-27 FALSE FALSE 1 cassava IITA-TMS-IBA130818 NA 398807 29600 roots 29600 NA NA NA NA NA 4 6 Nigeria Abuja 7.39857 9.07648 TRUE
18NCRP16yrtAB 2018-07-27 2019-07-27 FALSE FALSE 1 cassava IITA-TMS-IBA130820 NA 398802 26000 roots 26000 NA NA NA NA NA 4 6 Nigeria Abuja 7.39857 9.07648 TRUE
18NCRP16yrtAB 2018-07-27 2019-07-27 FALSE FALSE 1 cassava IITA-TMS-IBA130896 NA 398791 28200 roots 28200 NA NA NA NA NA 4 6 Nigeria Abuja 7.39857 9.07648 TRUE
18NCRP16yrtAB 2018-07-27 2019-07-27 FALSE FALSE 1 cassava IITA-TMS-IBA141092 NA 398035 16800 roots 16800 NA NA NA NA NA 4 6 Nigeria Abuja 7.39857 9.07648 TRUE
18NCRP16yrtAB 2018-07-27 2019-07-27 FALSE FALSE 1 cassava IITA-TMS-IKN120016 NA 66013 22600 roots 22600 NA NA NA NA NA 4 6 Nigeria Abuja 7.39857 9.07648 TRUE
18NCRP16yrtAB 2018-07-27 2019-07-27 FALSE FALSE 1 cassava IITA-TMS-IKN120036 NA 66020 26000 roots 26000 NA NA NA NA NA 4 6 Nigeria Abuja 7.39857 9.07648 TRUE
18NCRP16yrtAB 2018-07-27 2019-07-27 FALSE FALSE 1 cassava NR070220 NA 67154 12000 roots 12000 NA NA NA NA NA 4 6 Nigeria Abuja 7.39857 9.07648 TRUE
18NCRP16yrtAB 2018-07-27 2019-07-27 FALSE FALSE 1 cassava NR070240 NA 802433 31800 roots 31800 NA NA NA NA NA 4 6 Nigeria Abuja 7.39857 9.07648 TRUE
18NCRP16yrtAB 2018-07-27 2019-07-27 FALSE FALSE 1 cassava NR1S1059 NA 42634 9000 roots 9000 NA NA NA NA NA 4 6 Nigeria Abuja 7.39857 9.07648 TRUE
18NCRP16yrtAB 2018-07-27 2019-07-27 FALSE FALSE 1 cassava NR1S1096 NA 61718 31000 roots 31000 NA NA NA NA NA 4 6 Nigeria Abuja 7.39857 9.07648 TRUE
18NCRP16yrtAB 2018-07-27 2019-07-27 FALSE FALSE 1 cassava NR1S1131 NA 61716 19800 roots 19800 NA NA NA NA NA 4 6 Nigeria Abuja 7.39857 9.07648 TRUE
18NCRP16yrtAB 2018-07-27 2019-07-27 FALSE FALSE 1 cassava NR1S1200 NA 42649 15000 roots 15000 NA NA NA NA NA 4 6 Nigeria Abuja 7.39857 9.07648 TRUE
18NCRP16yrtAB 2018-07-27 2019-07-27 FALSE FALSE 1 cassava NR1S1205 NA 61715 3000 roots 3000 NA NA NA NA NA 4 6 Nigeria Abuja 7.39857 9.07648 TRUE
18NCRP16yrtAB 2018-07-27 2019-07-27 FALSE FALSE 2 cassava IITA-TMS-IBA011797 NA 4957 20200 roots 20200 NA NA NA NA NA 4 6 Nigeria Abuja 7.39857 9.07648 TRUE
18NCRP16yrtAB 2018-07-27 2019-07-27 FALSE FALSE 2 cassava IITA-TMS-IBA070539 NA 29531 21000 roots 21000 NA NA NA NA NA 4 6 Nigeria Abuja 7.39857 9.07648 TRUE
18NCRP16yrtAB 2018-07-27 2019-07-27 FALSE FALSE 2 cassava IITA-TMS-IBA070593 NA 29557 16200 roots 16200 NA NA NA NA NA 4 6 Nigeria Abuja 7.39857 9.07648 TRUE
18NCRP16yrtAB 2018-07-27 2019-07-27 FALSE FALSE 2 cassava IITA-TMS-IBA130818 NA 398807 20800 roots 20800 NA NA NA NA NA 4 6 Nigeria Abuja 7.39857 9.07648 TRUE
18NCRP16yrtAB 2018-07-27 2019-07-27 FALSE FALSE 2 cassava IITA-TMS-IBA130820 NA 398802 28200 roots 28200 NA NA NA NA NA 4 6 Nigeria Abuja 7.39857 9.07648 TRUE
18NCRP16yrtAB 2018-07-27 2019-07-27 FALSE FALSE 2 cassava IITA-TMS-IBA130896 NA 398791 25600 roots 25600 NA NA NA NA NA 4 6 Nigeria Abuja 7.39857 9.07648 TRUE
18NCRP16yrtAB 2018-07-27 2019-07-27 FALSE FALSE 2 cassava IITA-TMS-IBA141092 NA 398035 16000 roots 16000 NA NA NA NA NA 4 6 Nigeria Abuja 7.39857 9.07648 TRUE
18NCRP16yrtAB 2018-07-27 2019-07-27 FALSE FALSE 2 cassava IITA-TMS-IKN120016 NA 66013 27400 roots 27400 NA NA NA NA NA 4 6 Nigeria Abuja 7.39857 9.07648 TRUE
18NCRP16yrtAB 2018-07-27 2019-07-27 FALSE FALSE 2 cassava IITA-TMS-IKN120036 NA 66020 23800 roots 23800 NA NA NA NA NA 4 6 Nigeria Abuja 7.39857 9.07648 TRUE


The observations were made at 1 locations. We have coordinates for 1 of these locations.


The standardization script does not emit non-compliance warnings.

The overall quality of the dataset, given the completeness of required variables was 6.2 on a scale of 10. See the table below

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


The data are further summarized in the table below.

Variable Stats / Values Freqs (% of Valid) Graph Missing
trial_id [character] 1. 18NCRP16yrtAB
48(100.0%)
 0 (0.0%)
planting_date [character] 1. 2018-07-27
48(100.0%)
 0 (0.0%)
harvest_date [character] 1. 2019-07-27
48(100.0%)
 0 (0.0%)
on_farm [logical] 1. FALSE
48(100.0%)
 0 (0.0%)
is_survey [logical] 1. FALSE
48(100.0%)
 0 (0.0%)
rep [integer]
Mean (sd) : 2 (0.8)
min ≤ med ≤ max:
1 ≤ 2 ≤ 3
IQR (CV) : 2 (0.4)
1:16(33.3%)
2:16(33.3%)
3:16(33.3%)
 0 (0.0%)
crop [character] 1. cassava
48(100.0%)
 0 (0.0%)
variety [character]
1. IITA-TMS-IBA011797
2. IITA-TMS-IBA070539
3. IITA-TMS-IBA070593
4. IITA-TMS-IBA130818
5. IITA-TMS-IBA130820
6. IITA-TMS-IBA130896
7. IITA-TMS-IBA141092
8. IITA-TMS-IKN120016
9. IITA-TMS-IKN120036
10. NR070220
[ 6 others ]
3(6.2%)
3(6.2%)
3(6.2%)
3(6.2%)
3(6.2%)
3(6.2%)
3(6.2%)
3(6.2%)
3(6.2%)
3(6.2%)
18(37.5%)
 0 (0.0%)
variety_alt [logical]
All NA's
 48 (100.0%)
variety_code [integer]
Mean (sd) : 183158.2 (222093)
min ≤ med ≤ max:
4957 ≤ 63865.5 ≤ 802433
IQR (CV) : 355578.8 (1.2)
 16 distinct values 0 (0.0%)
fwy_storage [integer]
Mean (sd) : 21206.2 (7401.7)
min ≤ med ≤ max:
3000 ≤ 21200 ≤ 36000
IQR (CV) : 9050 (0.3)
 40 distinct values 0 (0.0%)
yield_part [character] 1. roots
48(100.0%)
 0 (0.0%)
yield [integer]
Mean (sd) : 21206.2 (7401.7)
min ≤ med ≤ max:
3000 ≤ 21200 ≤ 36000
IQR (CV) : 9050 (0.3)
 40 distinct values 0 (0.0%)
yield_moisture [logical]
All NA's
 48 (100.0%)
N_fertilizer [logical]
All NA's
 48 (100.0%)
P_fertilizer [logical]
All NA's
 48 (100.0%)
K_fertilizer [logical]
All NA's
 48 (100.0%)
irrigated [logical]
All NA's
 48 (100.0%)
plot_length [integer] 1 distinct value
4:48(100.0%)
 0 (0.0%)
plot_width [integer] 1 distinct value
6:48(100.0%)
 0 (0.0%)
country [character] 1. Nigeria
48(100.0%)
 0 (0.0%)
location [character] 1. Abuja
48(100.0%)
 0 (0.0%)
geo_from_source [logical] 1. TRUE
48(100.0%)
 0 (0.0%)