This report describes standardized data for “Assessment of Cassava varieties for multiple pest resistance ability in a Uniformed Yield Trial (20 clones) in Ibadan 2000/2001 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 (2001). Assessment of Cassava varieties for multiple pest resistance ability in a Uniformed Yield Trial (20 clones) in Ibadan 2000/2001 Breeding Season. International Institute of Tropical Agriculture (IITA). Not versioned. doi:10.25502/8K5J-V968

The dataset has 80 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 00uyt20mprIB 2000-04-28 2001-05-21 FALSE FALSE 1 cassava IITA-TMS-IBA30572 NA 5 NA NA roots NA NA NA NA NA NA NA
Nigeria Ibadan 3.94704 7.37754 TRUE 00uyt20mprIB 2000-04-28 2001-05-21 FALSE FALSE 1 cassava IITA-TMS-IBA4(2)1425 NA 246 NA NA roots NA NA NA NA NA NA NA
Nigeria Ibadan 3.94704 7.37754 TRUE 00uyt20mprIB 2000-04-28 2001-05-21 FALSE FALSE 1 cassava IITA-TMS-IBA8200058 NA 268 NA NA roots NA NA NA NA NA NA NA
Nigeria Ibadan 3.94704 7.37754 TRUE 00uyt20mprIB 2000-04-28 2001-05-21 FALSE FALSE 1 cassava IITA-TMS-IBA9102324 NA 374 NA NA roots NA NA NA NA NA NA NA
Nigeria Ibadan 3.94704 7.37754 TRUE 00uyt20mprIB 2000-04-28 2001-05-21 FALSE FALSE 1 cassava IITA-TMS-IBA950041 NA 516 NA NA roots NA NA NA NA NA NA NA
Nigeria Ibadan 3.94704 7.37754 TRUE 00uyt20mprIB 2000-04-28 2001-05-21 FALSE FALSE 1 cassava IITA-TMS-IBA950058 NA 518 NA NA roots NA NA NA NA NA NA NA
Nigeria Ibadan 3.94704 7.37754 TRUE 00uyt20mprIB 2000-04-28 2001-05-21 FALSE FALSE 1 cassava IITA-TMS-IBA950061 NA 520 NA NA roots NA NA NA NA NA NA NA
Nigeria Ibadan 3.94704 7.37754 TRUE 00uyt20mprIB 2000-04-28 2001-05-21 FALSE FALSE 1 cassava IITA-TMS-IBA950063 NA 522 NA NA roots NA NA NA NA NA NA NA
Nigeria Ibadan 3.94704 7.37754 TRUE 00uyt20mprIB 2000-04-28 2001-05-21 FALSE FALSE 1 cassava IITA-TMS-IBA950104 NA 524 NA NA roots NA NA NA NA NA NA NA
Nigeria Ibadan 3.94704 7.37754 TRUE 00uyt20mprIB 2000-04-28 2001-05-21 FALSE FALSE 1 cassava IITA-TMS-IBA950180 NA 528 NA NA roots NA NA NA NA NA NA NA
Nigeria Ibadan 3.94704 7.37754 TRUE 00uyt20mprIB 2000-04-28 2001-05-21 FALSE FALSE 1 cassava IITA-TMS-IBA950248 NA 530 NA NA roots NA NA NA NA NA NA NA
Nigeria Ibadan 3.94704 7.37754 TRUE 00uyt20mprIB 2000-04-28 2001-05-21 FALSE FALSE 1 cassava IITA-TMS-IBA950279 NA 532 NA NA roots NA NA NA NA NA NA NA
Nigeria Ibadan 3.94704 7.37754 TRUE 00uyt20mprIB 2000-04-28 2001-05-21 FALSE FALSE 1 cassava IITA-TMS-IBA950289 NA 534 NA NA roots NA NA NA NA NA NA NA
Nigeria Ibadan 3.94704 7.37754 TRUE 00uyt20mprIB 2000-04-28 2001-05-21 FALSE FALSE 1 cassava IITA-TMS-IBA950306 NA 538 NA NA roots NA NA NA NA NA NA NA
Nigeria Ibadan 3.94704 7.37754 TRUE 00uyt20mprIB 2000-04-28 2001-05-21 FALSE FALSE 1 cassava IITA-TMS-IBA950528 NA 548 NA NA roots NA NA NA NA NA NA NA
Nigeria Ibadan 3.94704 7.37754 TRUE 00uyt20mprIB 2000-04-28 2001-05-21 FALSE FALSE 1 cassava IITA-TMS-IBA950645 NA 552 NA NA roots NA NA NA NA NA NA NA
Nigeria Ibadan 3.94704 7.37754 TRUE 00uyt20mprIB 2000-04-28 2001-05-21 FALSE FALSE 1 cassava IITA-TMS-IBA960523 NA 609 NA NA roots NA NA NA NA NA NA NA
Nigeria Ibadan 3.94704 7.37754 TRUE 00uyt20mprIB 2000-04-28 2001-05-21 FALSE FALSE 1 cassava IITA-TMS-ZAR950402 NA 186 NA NA roots NA NA NA NA NA NA NA
Nigeria Ibadan 3.94704 7.37754 TRUE 00uyt20mprIB 2000-04-28 2001-05-21 FALSE FALSE 1 cassava IITA-TMS-ZAR950415 NA 188 NA NA roots NA NA NA NA NA NA NA
Nigeria Ibadan 3.94704 7.37754 TRUE 00uyt20mprIB 2000-04-28 2001-05-21 FALSE FALSE 1 cassava TMEB1 NA 39629 NA NA roots NA NA NA NA NA NA NA
Nigeria Ibadan 3.94704 7.37754 TRUE 00uyt20mprIB 2000-04-28 2001-05-21 FALSE FALSE 2 cassava IITA-TMS-IBA30572 NA 5 NA NA roots NA NA NA NA NA NA NA
Nigeria Ibadan 3.94704 7.37754 TRUE 00uyt20mprIB 2000-04-28 2001-05-21 FALSE FALSE 2 cassava IITA-TMS-IBA4(2)1425 NA 246 NA NA roots NA NA NA NA NA NA NA
Nigeria Ibadan 3.94704 7.37754 TRUE 00uyt20mprIB 2000-04-28 2001-05-21 FALSE FALSE 2 cassava IITA-TMS-IBA8200058 NA 268 NA NA roots NA NA NA NA NA NA NA
Nigeria Ibadan 3.94704 7.37754 TRUE 00uyt20mprIB 2000-04-28 2001-05-21 FALSE FALSE 2 cassava IITA-TMS-IBA9102324 NA 374 NA NA roots NA NA NA NA NA NA NA
Nigeria Ibadan 3.94704 7.37754 TRUE 00uyt20mprIB 2000-04-28 2001-05-21 FALSE FALSE 2 cassava IITA-TMS-IBA950041 NA 516 NA NA roots NA NA NA NA NA NA NA


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


The standardization script emits the following non-compliance warnings.

message
yield
80 harvest_date more than 366 days after planting_date

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
80(100.0%)
 0 (0.0%)
location [character] 1. Ibadan
80(100.0%)
 0 (0.0%)
geo_from_source [logical] 1. TRUE
80(100.0%)
 0 (0.0%)
trial_id [character] 1. 00uyt20mprIB
80(100.0%)
 0 (0.0%)
planting_date [character] 1. 2000-04-28
80(100.0%)
 0 (0.0%)
harvest_date [character] 1. 2001-05-21
80(100.0%)
 0 (0.0%)
on_farm [logical] 1. FALSE
80(100.0%)
 0 (0.0%)
is_survey [logical] 1. FALSE
80(100.0%)
 0 (0.0%)
rep [integer]
Mean (sd) : 2.5 (1.1)
min ≤ med ≤ max:
1 ≤ 2.5 ≤ 4
IQR (CV) : 1.5 (0.5)
1:20(25.0%)
2:20(25.0%)
3:20(25.0%)
4:20(25.0%)
 0 (0.0%)
crop [character] 1. cassava
80(100.0%)
 0 (0.0%)
variety [character]
1. IITA-TMS-IBA30572
2. IITA-TMS-IBA4(2)1425
3. IITA-TMS-IBA8200058
4. IITA-TMS-IBA9102324
5. IITA-TMS-IBA950041
6. IITA-TMS-IBA950058
7. IITA-TMS-IBA950061
8. IITA-TMS-IBA950063
9. IITA-TMS-IBA950104
10. IITA-TMS-IBA950180
[ 10 others ]
4(5.0%)
4(5.0%)
4(5.0%)
4(5.0%)
4(5.0%)
4(5.0%)
4(5.0%)
4(5.0%)
4(5.0%)
4(5.0%)
40(50.0%)
 0 (0.0%)
variety_alt [logical]
All NA's
 80 (100.0%)
variety_code [integer]
Mean (sd) : 2393.3 (8597.9)
min ≤ med ≤ max:
5 ≤ 523 ≤ 39629
IQR (CV) : 187.5 (3.6)
 20 distinct values 0 (0.0%)
fwy_storage [logical]
All NA's
 80 (100.0%)
fwy_residue [logical]
All NA's
 80 (100.0%)
yield_part [character] 1. roots
80(100.0%)
 0 (0.0%)
yield [logical]
All NA's
 80 (100.0%)
N_fertilizer [logical]
All NA's
 80 (100.0%)
P_fertilizer [logical]
All NA's
 80 (100.0%)
K_fertilizer [logical]
All NA's
 80 (100.0%)
irrigated [logical]
All NA's
 80 (100.0%)
plot_length [logical]
All NA's
 80 (100.0%)
plot_width [logical]
All NA's
 80 (100.0%)