This report describes standardized data for “Assessment of Varieties of Cassava for high yield, disease resistance (cmd) Set1 in Multilocational Trial (16 clones) in Otobi 2003/2004 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 (2020). Assessment of Varieties of Cassava for high yield, disease resistance (cmd) Set1 in Multilocational Trial (16 clones) in Otobi 2003/2004 Breeding Season. International Institute of Tropical Agriculture (IITA). Not versioned. doi:10.25502/QX19-8937

The dataset has 60 records and 24 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 yield_part N_fertilizer P_fertilizer K_fertilizer irrigated plot_length plot_width
Nigeria Otobi 8.08603 7.08929 TRUE 03cmd_mlt_Otobi(Set1) 2003 NA FALSE FALSE 1 cassava IITA-TMS-IBA30572 NA 5 roots NA NA NA NA NA NA
Nigeria Otobi 8.08603 7.08929 TRUE 03cmd_mlt_Otobi(Set1) 2003 NA FALSE FALSE 1 cassava IITA-TMS-IBA4(2)1425 NA 246 roots NA NA NA NA NA NA
Nigeria Otobi 8.08603 7.08929 TRUE 03cmd_mlt_Otobi(Set1) 2003 NA FALSE FALSE 1 cassava IITA-TMS-IBA8200058 NA 268 roots NA NA NA NA NA NA
Nigeria Otobi 8.08603 7.08929 TRUE 03cmd_mlt_Otobi(Set1) 2003 NA FALSE FALSE 1 cassava IITA-TMS-IBA960523 NA 609 roots NA NA NA NA NA NA
Nigeria Otobi 8.08603 7.08929 TRUE 03cmd_mlt_Otobi(Set1) 2003 NA FALSE FALSE 1 cassava IITA-TMS-IBA961632 NA 665 roots NA NA NA NA NA NA
Nigeria Otobi 8.08603 7.08929 TRUE 03cmd_mlt_Otobi(Set1) 2003 NA FALSE FALSE 1 cassava IITA-TMS-IBA970211 NA 675 roots NA NA NA NA NA NA
Nigeria Otobi 8.08603 7.08929 TRUE 03cmd_mlt_Otobi(Set1) 2003 NA FALSE FALSE 1 cassava IITA-TMS-IBA974763 NA 1652 roots NA NA NA NA NA NA
Nigeria Otobi 8.08603 7.08929 TRUE 03cmd_mlt_Otobi(Set1) 2003 NA FALSE FALSE 1 cassava IITA-TMS-IBA974779 NA 711 roots NA NA NA NA NA NA
Nigeria Otobi 8.08603 7.08929 TRUE 03cmd_mlt_Otobi(Set1) 2003 NA FALSE FALSE 1 cassava IITA-TMS-IBA980002 NA 713 roots NA NA NA NA NA NA
Nigeria Otobi 8.08603 7.08929 TRUE 03cmd_mlt_Otobi(Set1) 2003 NA FALSE FALSE 1 cassava IITA-TMS-IBA980581 NA 723 roots NA NA NA NA NA NA
Nigeria Otobi 8.08603 7.08929 TRUE 03cmd_mlt_Otobi(Set1) 2003 NA FALSE FALSE 1 cassava IITA-TMS-IBA982101 NA 725 roots NA NA NA NA NA NA
Nigeria Otobi 8.08603 7.08929 TRUE 03cmd_mlt_Otobi(Set1) 2003 NA FALSE FALSE 1 cassava IITA-TMS-IBA982226 NA 728 roots NA NA NA NA NA NA
Nigeria Otobi 8.08603 7.08929 TRUE 03cmd_mlt_Otobi(Set1) 2003 NA FALSE FALSE 1 cassava IITA-TMS-IBA992123 NA 1712 roots NA NA NA NA NA NA
Nigeria Otobi 8.08603 7.08929 TRUE 03cmd_mlt_Otobi(Set1) 2003 NA FALSE FALSE 1 cassava IITA-TMS-IBA993073 NA 1714 roots NA NA NA NA NA NA
Nigeria Otobi 8.08603 7.08929 TRUE 03cmd_mlt_Otobi(Set1) 2003 NA FALSE FALSE 1 cassava IITA-TMS-MOK980068 NA 1768 roots NA NA NA NA NA NA
Nigeria Otobi 8.08603 7.08929 TRUE 03cmd_mlt_Otobi(Set1) 2003 NA FALSE FALSE 2 cassava IITA-TMS-IBA30572 NA 5 roots NA NA NA NA NA NA
Nigeria Otobi 8.08603 7.08929 TRUE 03cmd_mlt_Otobi(Set1) 2003 NA FALSE FALSE 2 cassava IITA-TMS-IBA4(2)1425 NA 246 roots NA NA NA NA NA NA
Nigeria Otobi 8.08603 7.08929 TRUE 03cmd_mlt_Otobi(Set1) 2003 NA FALSE FALSE 2 cassava IITA-TMS-IBA8200058 NA 268 roots NA NA NA NA NA NA
Nigeria Otobi 8.08603 7.08929 TRUE 03cmd_mlt_Otobi(Set1) 2003 NA FALSE FALSE 2 cassava IITA-TMS-IBA960523 NA 609 roots NA NA NA NA NA NA
Nigeria Otobi 8.08603 7.08929 TRUE 03cmd_mlt_Otobi(Set1) 2003 NA FALSE FALSE 2 cassava IITA-TMS-IBA961632 NA 665 roots NA NA NA NA NA NA
Nigeria Otobi 8.08603 7.08929 TRUE 03cmd_mlt_Otobi(Set1) 2003 NA FALSE FALSE 2 cassava IITA-TMS-IBA970211 NA 675 roots NA NA NA NA NA NA
Nigeria Otobi 8.08603 7.08929 TRUE 03cmd_mlt_Otobi(Set1) 2003 NA FALSE FALSE 2 cassava IITA-TMS-IBA974763 NA 1652 roots NA NA NA NA NA NA
Nigeria Otobi 8.08603 7.08929 TRUE 03cmd_mlt_Otobi(Set1) 2003 NA FALSE FALSE 2 cassava IITA-TMS-IBA974779 NA 711 roots NA NA NA NA NA NA
Nigeria Otobi 8.08603 7.08929 TRUE 03cmd_mlt_Otobi(Set1) 2003 NA FALSE FALSE 2 cassava IITA-TMS-IBA980002 NA 713 roots NA NA NA NA NA NA
Nigeria Otobi 8.08603 7.08929 TRUE 03cmd_mlt_Otobi(Set1) 2003 NA FALSE FALSE 2 cassava IITA-TMS-IBA980581 NA 723 roots 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
not a variable in the data: yield

The overall quality of the dataset, given the completeness of required variables was 4.4 on a scale of 10. See the table below

variable completeness (%)
planting_date 100
harvest_date 0
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
60(100.0%)
 0 (0.0%)
location [character] 1. Otobi
60(100.0%)
 0 (0.0%)
geo_from_source [logical] 1. TRUE
60(100.0%)
 0 (0.0%)
trial_id [character] 1. 03cmd_mlt_Otobi(Set1
60(100.0%)
 0 (0.0%)
planting_date [integer] 1 distinct value
2003:60(100.0%)
 0 (0.0%)
harvest_date [logical]
All NA's
 60 (100.0%)
on_farm [logical] 1. FALSE
60(100.0%)
 0 (0.0%)
is_survey [logical] 1. FALSE
60(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)
1:15(25.0%)
2:15(25.0%)
3:15(25.0%)
4:15(25.0%)
 0 (0.0%)
crop [character] 1. cassava
60(100.0%)
 0 (0.0%)
variety [character]
1. IITA-TMS-IBA30572
2. IITA-TMS-IBA4(2)1425
3. IITA-TMS-IBA8200058
4. IITA-TMS-IBA960523
5. IITA-TMS-IBA961632
6. IITA-TMS-IBA970211
7. IITA-TMS-IBA974763
8. IITA-TMS-IBA974779
9. IITA-TMS-IBA980002
10. IITA-TMS-IBA980581
[ 5 others ]
4(6.7%)
4(6.7%)
4(6.7%)
4(6.7%)
4(6.7%)
4(6.7%)
4(6.7%)
4(6.7%)
4(6.7%)
4(6.7%)
20(33.3%)
 0 (0.0%)
variety_alt [logical]
All NA's
 60 (100.0%)
variety_code [integer]
Mean (sd) : 860.9 (558.4)
min ≤ med ≤ max:
5 ≤ 713 ≤ 1768
IQR (CV) : 1043 (0.6)
 15 distinct values 0 (0.0%)
yield_part [character] 1. roots
60(100.0%)
 0 (0.0%)
N_fertilizer [logical]
All NA's
 60 (100.0%)
P_fertilizer [logical]
All NA's
 60 (100.0%)
K_fertilizer [logical]
All NA's
 60 (100.0%)
irrigated [logical]
All NA's
 60 (100.0%)
plot_length [logical]
All NA's
 60 (100.0%)
plot_width [logical]
All NA's
 60 (100.0%)