This report describes standardized data for “Assessment of Varieties of Cassava for high yield and disease resistance in an Uniform Yield Trial (20 clones from F0) in Agenbode 1995/1996 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 (1996). Assessment of Varieties of Cassava for high yield and disease resistance in an Uniform Yield Trial (20 clones from F0) in Agenbode 1995/1996 Breeding Season. International Institute of Tropical Agriculture (IITA). Not versioned. doi:10.25502/220W-TK66

The dataset has 80 records and 26 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 yield_part yield N_fertilizer P_fertilizer K_fertilizer irrigated plot_length plot_width
Nigeria Agenbode 6.69368 7.10328 TRUE 95uyt20cgmf0AG 1995-05-07 1996-04-19 FALSE FALSE 1 cassava AMOYA NA 1433226 13800 roots 13800 NA NA NA NA NA NA
Nigeria Agenbode 6.69368 7.10328 TRUE 95uyt20cgmf0AG 1995-05-07 1996-04-19 FALSE FALSE 1 cassava IITA-TMS-IBA30572 NA 5 17000 roots 17000 NA NA NA NA NA NA
Nigeria Agenbode 6.69368 7.10328 TRUE 95uyt20cgmf0AG 1995-05-07 1996-04-19 FALSE FALSE 1 cassava IITA-TMS-IBA9100416 NA 338 17500 roots 17500 NA NA NA NA NA NA
Nigeria Agenbode 6.69368 7.10328 TRUE 95uyt20cgmf0AG 1995-05-07 1996-04-19 FALSE FALSE 1 cassava IITA-TMS-IBA9100419 NA 344 33500 roots 33500 NA NA NA NA NA NA
Nigeria Agenbode 6.69368 7.10328 TRUE 95uyt20cgmf0AG 1995-05-07 1996-04-19 FALSE FALSE 1 cassava IITA-TMS-IBA9100424 NA 802533 17500 roots 17500 NA NA NA NA NA NA
Nigeria Agenbode 6.69368 7.10328 TRUE 95uyt20cgmf0AG 1995-05-07 1996-04-19 FALSE FALSE 1 cassava IITA-TMS-IBA9100438 NA 348 25400 roots 25400 NA NA NA NA NA NA
Nigeria Agenbode 6.69368 7.10328 TRUE 95uyt20cgmf0AG 1995-05-07 1996-04-19 FALSE FALSE 1 cassava IITA-TMS-IBA9101730 NA 358 17800 roots 17800 NA NA NA NA NA NA
Nigeria Agenbode 6.69368 7.10328 TRUE 95uyt20cgmf0AG 1995-05-07 1996-04-19 FALSE FALSE 1 cassava IITA-TMS-IBA9102163 NA 360 14000 roots 14000 NA NA NA NA NA NA
Nigeria Agenbode 6.69368 7.10328 TRUE 95uyt20cgmf0AG 1995-05-07 1996-04-19 FALSE FALSE 1 cassava IITA-TMS-IBA9102312 NA 362 16500 roots 16500 NA NA NA NA NA NA
Nigeria Agenbode 6.69368 7.10328 TRUE 95uyt20cgmf0AG 1995-05-07 1996-04-19 FALSE FALSE 1 cassava IITA-TMS-IBA9102316 NA 366 20400 roots 20400 NA NA NA NA NA NA
Nigeria Agenbode 6.69368 7.10328 TRUE 95uyt20cgmf0AG 1995-05-07 1996-04-19 FALSE FALSE 1 cassava IITA-TMS-IBA9102317 NA 368 26500 roots 26500 NA NA NA NA NA NA
Nigeria Agenbode 6.69368 7.10328 TRUE 95uyt20cgmf0AG 1995-05-07 1996-04-19 FALSE FALSE 1 cassava IITA-TMS-IBA9102319 NA 370 26500 roots 26500 NA NA NA NA NA NA
Nigeria Agenbode 6.69368 7.10328 TRUE 95uyt20cgmf0AG 1995-05-07 1996-04-19 FALSE FALSE 1 cassava IITA-TMS-IBA9102322 NA 372 18500 roots 18500 NA NA NA NA NA NA
Nigeria Agenbode 6.69368 7.10328 TRUE 95uyt20cgmf0AG 1995-05-07 1996-04-19 FALSE FALSE 1 cassava IITA-TMS-IBA920057 NA 390 20800 roots 20800 NA NA NA NA NA NA
Nigeria Agenbode 6.69368 7.10328 TRUE 95uyt20cgmf0AG 1995-05-07 1996-04-19 FALSE FALSE 1 cassava IITA-TMS-IBA920067 NA 392 20900 roots 20900 NA NA NA NA NA NA
Nigeria Agenbode 6.69368 7.10328 TRUE 95uyt20cgmf0AG 1995-05-07 1996-04-19 FALSE FALSE 1 cassava IITA-TMS-IBA920326 NA 396 33500 roots 33500 NA NA NA NA NA NA
Nigeria Agenbode 6.69368 7.10328 TRUE 95uyt20cgmf0AG 1995-05-07 1996-04-19 FALSE FALSE 1 cassava IITA-TMS-IBA920342 NA 398 16300 roots 16300 NA NA NA NA NA NA
Nigeria Agenbode 6.69368 7.10328 TRUE 95uyt20cgmf0AG 1995-05-07 1996-04-19 FALSE FALSE 1 cassava IITA-TMS-IBA920397 NA 400 23000 roots 23000 NA NA NA NA NA NA
Nigeria Agenbode 6.69368 7.10328 TRUE 95uyt20cgmf0AG 1995-05-07 1996-04-19 FALSE FALSE 1 cassava IITA-TMS-IBA920429 NA 409 20100 roots 20100 NA NA NA NA NA NA
Nigeria Agenbode 6.69368 7.10328 TRUE 95uyt20cgmf0AG 1995-05-07 1996-04-19 FALSE FALSE 1 cassava TMEB1 NA 39629 20400 roots 20400 NA NA NA NA NA NA
Nigeria Agenbode 6.69368 7.10328 TRUE 95uyt20cgmf0AG 1995-05-07 1996-04-19 FALSE FALSE 2 cassava AMOYA NA 1433226 9500 roots 9500 NA NA NA NA NA NA
Nigeria Agenbode 6.69368 7.10328 TRUE 95uyt20cgmf0AG 1995-05-07 1996-04-19 FALSE FALSE 2 cassava IITA-TMS-IBA30572 NA 5 17500 roots 17500 NA NA NA NA NA NA
Nigeria Agenbode 6.69368 7.10328 TRUE 95uyt20cgmf0AG 1995-05-07 1996-04-19 FALSE FALSE 2 cassava IITA-TMS-IBA9100416 NA 338 15000 roots 15000 NA NA NA NA NA NA
Nigeria Agenbode 6.69368 7.10328 TRUE 95uyt20cgmf0AG 1995-05-07 1996-04-19 FALSE FALSE 2 cassava IITA-TMS-IBA9100419 NA 344 29500 roots 29500 NA NA NA NA NA NA
Nigeria Agenbode 6.69368 7.10328 TRUE 95uyt20cgmf0AG 1995-05-07 1996-04-19 FALSE FALSE 2 cassava IITA-TMS-IBA9100424 NA 802533 10600 roots 10600 NA NA NA NA NA NA


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
80(100.0%)
 0 (0.0%)
location [character] 1. Agenbode
80(100.0%)
 0 (0.0%)
geo_from_source [logical] 1. TRUE
80(100.0%)
 0 (0.0%)
trial_id [character] 1. 95uyt20cgmf0AG
80(100.0%)
 0 (0.0%)
planting_date [character] 1. 1995-05-07
80(100.0%)
 0 (0.0%)
harvest_date [character] 1. 1996-04-19
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. AMOYA
2. IITA-TMS-IBA30572
3. IITA-TMS-IBA9100416
4. IITA-TMS-IBA9100419
5. IITA-TMS-IBA9100424
6. IITA-TMS-IBA9100438
7. IITA-TMS-IBA9101730
8. IITA-TMS-IBA9102163
9. IITA-TMS-IBA9102312
10. IITA-TMS-IBA9102316
[ 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) : 114068.2 (351455.4)
min ≤ med ≤ max:
5 ≤ 371 ≤ 1433226
IQR (CV) : 39 (3.1)
 20 distinct values 0 (0.0%)
fwy_storage [integer]
Mean (sd) : 19528.8 (8679.6)
min ≤ med ≤ max:
500 ≤ 19900 ≤ 41000
IQR (CV) : 10750 (0.4)
 65 distinct values 0 (0.0%)
yield_part [character] 1. roots
80(100.0%)
 0 (0.0%)
yield [integer]
Mean (sd) : 19528.8 (8679.6)
min ≤ med ≤ max:
500 ≤ 19900 ≤ 41000
IQR (CV) : 10750 (0.4)
 65 distinct values 0 (0.0%)
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%)