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 (17 clones) in UI, Ibadan 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 White root varieties of Cassava for high yield, high dry matter and disease resistance using NCRP Trial (17 clones) in UI, Ibadan 2018/2019 Breeding Season. International Institute of Tropical Agriculture (IITA). doi:10.25502/SXG3-RA98

The dataset has 51 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 Ibadan 3.94704 7.37754 TRUE 18NCRP17wrtIB 2018-06-01 2019-06-01 FALSE FALSE 1 cassava IITA-TMS-IBA090454 NA 40232 883.3333 403.3333 roots 883.3333 NA NA NA NA 5 6
Nigeria Ibadan 3.94704 7.37754 TRUE 18NCRP17wrtIB 2018-06-01 2019-06-01 FALSE FALSE 1 cassava IITA-TMS-IBA090485 NA 40243 183.3333 113.3333 roots 183.3333 NA NA NA NA 5 6
Nigeria Ibadan 3.94704 7.37754 TRUE 18NCRP17wrtIB 2018-06-01 2019-06-01 FALSE FALSE 1 cassava IITA-TMS-IBA090506 NA 40257 916.6667 853.3333 roots 916.6667 NA NA NA NA 5 6
Nigeria Ibadan 3.94704 7.37754 TRUE 18NCRP17wrtIB 2018-06-01 2019-06-01 FALSE FALSE 1 cassava IITA-TMS-IBA090509 NA 40259 1116.6667 893.3333 roots 1116.6667 NA NA NA NA 5 6
Nigeria Ibadan 3.94704 7.37754 TRUE 18NCRP17wrtIB 2018-06-01 2019-06-01 FALSE FALSE 1 cassava IITA-TMS-IBA090521 NA 40265 666.6667 470.0000 roots 666.6667 NA NA NA NA 5 6
Nigeria Ibadan 3.94704 7.37754 TRUE 18NCRP17wrtIB 2018-06-01 2019-06-01 FALSE FALSE 1 cassava IITA-TMS-IBA090574 NA 40299 300.0000 153.3333 roots 300.0000 NA NA NA NA 5 6
Nigeria Ibadan 3.94704 7.37754 TRUE 18NCRP17wrtIB 2018-06-01 2019-06-01 FALSE FALSE 1 cassava IITA-TMS-IBA090581 NA 40305 1083.3333 566.6667 roots 1083.3333 NA NA NA NA 5 6
Nigeria Ibadan 3.94704 7.37754 TRUE 18NCRP17wrtIB 2018-06-01 2019-06-01 FALSE FALSE 1 cassava IITA-TMS-IBA30572 NA 5 483.3333 483.3333 roots 483.3333 NA NA NA NA 5 6
Nigeria Ibadan 3.94704 7.37754 TRUE 18NCRP17wrtIB 2018-06-01 2019-06-01 FALSE FALSE 1 cassava NR060117 NA 40490 216.6667 1086.6667 roots 216.6667 NA NA NA NA 5 6
Nigeria Ibadan 3.94704 7.37754 TRUE 18NCRP17wrtIB 2018-06-01 2019-06-01 FALSE FALSE 1 cassava NR060135 NA 40511 550.0000 390.0000 roots 550.0000 NA NA NA NA 5 6
Nigeria Ibadan 3.94704 7.37754 TRUE 18NCRP17wrtIB 2018-06-01 2019-06-01 FALSE FALSE 1 cassava NR060153 NA 40497 983.3333 1000.0000 roots 983.3333 NA NA NA NA 5 6
Nigeria Ibadan 3.94704 7.37754 TRUE 18NCRP17wrtIB 2018-06-01 2019-06-01 FALSE FALSE 1 cassava NR060169 NA 40500 150.0000 370.0000 roots 150.0000 NA NA NA NA 5 6
Nigeria Ibadan 3.94704 7.37754 TRUE 18NCRP17wrtIB 2018-06-01 2019-06-01 FALSE FALSE 1 cassava NR060333 NA 40507 166.6667 393.3333 roots 166.6667 NA NA NA NA 5 6
Nigeria Ibadan 3.94704 7.37754 TRUE 18NCRP17wrtIB 2018-06-01 2019-06-01 FALSE FALSE 1 cassava NR060394 NA 40486 183.3333 726.6667 roots 183.3333 NA NA NA NA 5 6
Nigeria Ibadan 3.94704 7.37754 TRUE 18NCRP17wrtIB 2018-06-01 2019-06-01 FALSE FALSE 1 cassava NR090189 NA 386149 166.6667 303.3333 roots 166.6667 NA NA NA NA 5 6
Nigeria Ibadan 3.94704 7.37754 TRUE 18NCRP17wrtIB 2018-06-01 2019-06-01 FALSE FALSE 1 cassava NR8082 NA 39554 683.3333 260.0000 roots 683.3333 NA NA NA NA 5 6
Nigeria Ibadan 3.94704 7.37754 TRUE 18NCRP17wrtIB 2018-06-01 2019-06-01 FALSE FALSE 1 cassava TME419 NA 633201 216.6667 340.0000 roots 216.6667 NA NA NA NA 5 6
Nigeria Ibadan 3.94704 7.37754 TRUE 18NCRP17wrtIB 2018-06-01 2019-06-01 FALSE FALSE 2 cassava IITA-TMS-IBA090454 NA 40232 383.3333 346.6667 roots 383.3333 NA NA NA NA 5 6
Nigeria Ibadan 3.94704 7.37754 TRUE 18NCRP17wrtIB 2018-06-01 2019-06-01 FALSE FALSE 2 cassava IITA-TMS-IBA090485 NA 40243 233.3333 343.3333 roots 233.3333 NA NA NA NA 5 6
Nigeria Ibadan 3.94704 7.37754 TRUE 18NCRP17wrtIB 2018-06-01 2019-06-01 FALSE FALSE 2 cassava IITA-TMS-IBA090506 NA 40257 683.3333 446.6667 roots 683.3333 NA NA NA NA 5 6
Nigeria Ibadan 3.94704 7.37754 TRUE 18NCRP17wrtIB 2018-06-01 2019-06-01 FALSE FALSE 2 cassava IITA-TMS-IBA090509 NA 40259 1150.0000 940.0000 roots 1150.0000 NA NA NA NA 5 6
Nigeria Ibadan 3.94704 7.37754 TRUE 18NCRP17wrtIB 2018-06-01 2019-06-01 FALSE FALSE 2 cassava IITA-TMS-IBA090521 NA 40265 350.0000 190.0000 roots 350.0000 NA NA NA NA 5 6
Nigeria Ibadan 3.94704 7.37754 TRUE 18NCRP17wrtIB 2018-06-01 2019-06-01 FALSE FALSE 2 cassava IITA-TMS-IBA090574 NA 40299 683.3333 516.6667 roots 683.3333 NA NA NA NA 5 6
Nigeria Ibadan 3.94704 7.37754 TRUE 18NCRP17wrtIB 2018-06-01 2019-06-01 FALSE FALSE 2 cassava IITA-TMS-IBA090581 NA 40305 716.6667 513.3333 roots 716.6667 NA NA NA NA 5 6
Nigeria Ibadan 3.94704 7.37754 TRUE 18NCRP17wrtIB 2018-06-01 2019-06-01 FALSE FALSE 2 cassava IITA-TMS-IBA30572 NA 5 300.0000 243.3333 roots 300.0000 NA NA NA NA 5 6


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
51(100.0%)
 0 (0.0%)
location [character] 1. Ibadan
51(100.0%)
 0 (0.0%)
geo_from_source [logical] 1. TRUE
51(100.0%)
 0 (0.0%)
trial_id [character] 1. 18NCRP17wrtIB
51(100.0%)
 0 (0.0%)
planting_date [character] 1. 2018-06-01
51(100.0%)
 0 (0.0%)
harvest_date [character] 1. 2019-06-01
51(100.0%)
 0 (0.0%)
on_farm [logical] 1. FALSE
51(100.0%)
 0 (0.0%)
is_survey [logical] 1. FALSE
51(100.0%)
 0 (0.0%)
rep [integer]
Mean (sd) : 2 (0.8)
min ≤ med ≤ max:
1 ≤ 2 ≤ 3
IQR (CV) : 2 (0.4)
1:17(33.3%)
2:17(33.3%)
3:17(33.3%)
 0 (0.0%)
crop [character] 1. cassava
51(100.0%)
 0 (0.0%)
variety [character]
1. IITA-TMS-IBA090454
2. IITA-TMS-IBA090485
3. IITA-TMS-IBA090506
4. IITA-TMS-IBA090509
5. IITA-TMS-IBA090521
6. IITA-TMS-IBA090574
7. IITA-TMS-IBA090581
8. IITA-TMS-IBA30572
9. NR060117
10. NR060135
[ 7 others ]
3(5.9%)
3(5.9%)
3(5.9%)
3(5.9%)
3(5.9%)
3(5.9%)
3(5.9%)
3(5.9%)
3(5.9%)
3(5.9%)
21(41.2%)
 0 (0.0%)
variety_alt [logical]
All NA's
 51 (100.0%)
variety_code [integer]
Mean (sd) : 93162.4 (159736.5)
min ≤ med ≤ max:
5 ≤ 40305 ≤ 633201
IQR (CV) : 243 (1.7)
 17 distinct values 0 (0.0%)
fwy_storage [numeric]
Mean (sd) : 504.2 (303.6)
min ≤ med ≤ max:
100 ≤ 450 ≤ 1150
IQR (CV) : 458.3 (0.6)
 35 distinct values 0 (0.0%)
fwy_residue [numeric]
Mean (sd) : 462.9 (223.2)
min ≤ med ≤ max:
113.3 ≤ 413.3 ≤ 1086.7
IQR (CV) : 196.7 (0.5)
 49 distinct values 0 (0.0%)
yield_part [character] 1. roots
51(100.0%)
 0 (0.0%)
yield [numeric]
Mean (sd) : 504.2 (303.6)
min ≤ med ≤ max:
100 ≤ 450 ≤ 1150
IQR (CV) : 458.3 (0.6)
 35 distinct values 0 (0.0%)
N_fertilizer [logical]
All NA's
 51 (100.0%)
P_fertilizer [logical]
All NA's
 51 (100.0%)
K_fertilizer [logical]
All NA's
 51 (100.0%)
irrigated [logical]
All NA's
 51 (100.0%)
plot_length [integer] 1 distinct value
5:51(100.0%)
 0 (0.0%)
plot_width [integer] 1 distinct value
6:51(100.0%)
 0 (0.0%)