This report describes standardized data for “Assessment of Varieties (M/MADORI selections) of Cassava for high yield, disease resistance in a Advancded Yield Trial (40 clones) in MMadori, Kano 1997/98 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 (1998). Assessment of Varieties (M/MADORI selections) of Cassava for high yield, disease resistance in a Advancded Yield Trial (40 clones) in MMadori, Kano 1997/98 Breeding Season. International Institute of Tropical Agriculture (IITA). Not versioned. doi:10.25502/79XW-KN68

The dataset has 160 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 dmy_storage fwy_storage yield_part yield N_fertilizer P_fertilizer K_fertilizer irrigated plot_length plot_width
Nigeria Malam Madori 9.88139 12.5614 TRUE 97ayt40mmselMM 1997-09-07 1998-09-07 FALSE FALSE 1 cassava 918W02370 NA 1497287 0.5 4000 roots 4000 NA NA NA NA NA NA
Nigeria Malam Madori 9.88139 12.5614 TRUE 97ayt40mmselMM 1997-09-07 1998-09-07 FALSE FALSE 1 cassava IITA-TMS-IBA30572 NA 5 0.5 4000 roots 4000 NA NA NA NA NA NA
Nigeria Malam Madori 9.88139 12.5614 TRUE 97ayt40mmselMM 1997-09-07 1998-09-07 FALSE FALSE 1 cassava IITA-TMS-IBA9102324 NA 374 0.9 7000 roots 7000 NA NA NA NA NA NA
Nigeria Malam Madori 9.88139 12.5614 TRUE 97ayt40mmselMM 1997-09-07 1998-09-07 FALSE FALSE 1 cassava IITA-TMS-IBA9102327 NA 378 1.5 9000 roots 9000 NA NA NA NA NA NA
Nigeria Malam Madori 9.88139 12.5614 TRUE 97ayt40mmselMM 1997-09-07 1998-09-07 FALSE FALSE 1 cassava IITA-TMS-IBA920326 NA 396 0.1 1200 roots 1200 NA NA NA NA NA NA
Nigeria Malam Madori 9.88139 12.5614 TRUE 97ayt40mmselMM 1997-09-07 1998-09-07 FALSE FALSE 1 cassava IITA-TMS-IBA940033 NA 805200 0.9 9000 roots 9000 NA NA NA NA NA NA
Nigeria Malam Madori 9.88139 12.5614 TRUE 97ayt40mmselMM 1997-09-07 1998-09-07 FALSE FALSE 1 cassava IITA-TMS-IBA940194 NA 1183063 1.2 12000 roots 12000 NA NA NA NA NA NA
Nigeria Malam Madori 9.88139 12.5614 TRUE 97ayt40mmselMM 1997-09-07 1998-09-07 FALSE FALSE 1 cassava IITA-TMS-IBA940255 NA 1183116 0.5 9400 roots 9400 NA NA NA NA NA NA
Nigeria Malam Madori 9.88139 12.5614 TRUE 97ayt40mmselMM 1997-09-07 1998-09-07 FALSE FALSE 1 cassava IITA-TMS-KAN950053 NA 1497288 0.9 4600 roots 4600 NA NA NA NA NA NA
Nigeria Malam Madori 9.88139 12.5614 TRUE 97ayt40mmselMM 1997-09-07 1998-09-07 FALSE FALSE 1 cassava IITA-TMS-KAN950093 NA 1497289 1.1 7000 roots 7000 NA NA NA NA NA NA
Nigeria Malam Madori 9.88139 12.5614 TRUE 97ayt40mmselMM 1997-09-07 1998-09-07 FALSE FALSE 1 cassava IITA-TMS-KAN950095 NA 1497290 0.4 2200 roots 2200 NA NA NA NA NA NA
Nigeria Malam Madori 9.88139 12.5614 TRUE 97ayt40mmselMM 1997-09-07 1998-09-07 FALSE FALSE 1 cassava IITA-TMS-KAN950131 NA 1739 0.8 8000 roots 8000 NA NA NA NA NA NA
Nigeria Malam Madori 9.88139 12.5614 TRUE 97ayt40mmselMM 1997-09-07 1998-09-07 FALSE FALSE 1 cassava IITA-TMS-KAN950237 NA 1741 1.1 6000 roots 6000 NA NA NA NA NA NA
Nigeria Malam Madori 9.88139 12.5614 TRUE 97ayt40mmselMM 1997-09-07 1998-09-07 FALSE FALSE 1 cassava IITA-TMS-KAN950239 NA 1497291 0.3 2200 roots 2200 NA NA NA NA NA NA
Nigeria Malam Madori 9.88139 12.5614 TRUE 97ayt40mmselMM 1997-09-07 1998-09-07 FALSE FALSE 1 cassava IITA-TMS-KAN950251 NA 1497292 0.0 1000 roots 1000 NA NA NA NA NA NA
Nigeria Malam Madori 9.88139 12.5614 TRUE 97ayt40mmselMM 1997-09-07 1998-09-07 FALSE FALSE 1 cassava IITA-TMS-KAN950256 NA 1497293 0.5 4000 roots 4000 NA NA NA NA NA NA
Nigeria Malam Madori 9.88139 12.5614 TRUE 97ayt40mmselMM 1997-09-07 1998-09-07 FALSE FALSE 1 cassava IITA-TMS-KAN950257 NA 7562 0.9 6400 roots 6400 NA NA NA NA NA NA
Nigeria Malam Madori 9.88139 12.5614 TRUE 97ayt40mmselMM 1997-09-07 1998-09-07 FALSE FALSE 1 cassava IITA-TMS-KAN950286 NA 1743 1.2 7200 roots 7200 NA NA NA NA NA NA
Nigeria Malam Madori 9.88139 12.5614 TRUE 97ayt40mmselMM 1997-09-07 1998-09-07 FALSE FALSE 1 cassava IITA-TMS-KAN950306 NA 1497294 1.1 4200 roots 4200 NA NA NA NA NA NA
Nigeria Malam Madori 9.88139 12.5614 TRUE 97ayt40mmselMM 1997-09-07 1998-09-07 FALSE FALSE 1 cassava IITA-TMS-KAN950338 NA 1497295 0.3 2000 roots 2000 NA NA NA NA NA NA
Nigeria Malam Madori 9.88139 12.5614 TRUE 97ayt40mmselMM 1997-09-07 1998-09-07 FALSE FALSE 1 cassava IITA-TMS-KAN950344 NA 1497296 1.0 4800 roots 4800 NA NA NA NA NA NA
Nigeria Malam Madori 9.88139 12.5614 TRUE 97ayt40mmselMM 1997-09-07 1998-09-07 FALSE FALSE 1 cassava IITA-TMS-KAN950349 NA 1497297 1.0 6400 roots 6400 NA NA NA NA NA NA
Nigeria Malam Madori 9.88139 12.5614 TRUE 97ayt40mmselMM 1997-09-07 1998-09-07 FALSE FALSE 1 cassava IITA-TMS-KAN950353 NA 1497298 0.0 400 roots 400 NA NA NA NA NA NA
Nigeria Malam Madori 9.88139 12.5614 TRUE 97ayt40mmselMM 1997-09-07 1998-09-07 FALSE FALSE 1 cassava IITA-TMS-KAN950378 NA 1497299 0.2 3200 roots 3200 NA NA NA NA NA NA
Nigeria Malam Madori 9.88139 12.5614 TRUE 97ayt40mmselMM 1997-09-07 1998-09-07 FALSE FALSE 1 cassava IITA-TMS-KAN950410 NA 1497300 0.4 2800 roots 2800 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

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
160(100.0%)
 0 (0.0%)
location [character] 1. Malam Madori
160(100.0%)
 0 (0.0%)
geo_from_source [logical] 1. TRUE
160(100.0%)
 0 (0.0%)
trial_id [character] 1. 97ayt40mmselMM
160(100.0%)
 0 (0.0%)
planting_date [character] 1. 1997-09-07
160(100.0%)
 0 (0.0%)
harvest_date [character] 1. 1998-09-07
160(100.0%)
 0 (0.0%)
on_farm [logical] 1. FALSE
160(100.0%)
 0 (0.0%)
is_survey [logical] 1. FALSE
160(100.0%)
 0 (0.0%)
rep [integer]
Mean (sd) : 2.5 (1.1)
min ≤ med ≤ max:
1 ≤ 2.5 ≤ 4
IQR (CV) : 2.2 (0.4)
1:40(25.0%)
2:40(25.0%)
3:39(24.4%)
4:41(25.6%)
 0 (0.0%)
crop [character] 1. cassava
160(100.0%)
 0 (0.0%)
variety [character]
1. 918W02370
2. IITA-TMS-IBA30572
3. IITA-TMS-IBA9102324
4. IITA-TMS-IBA9102327
5. IITA-TMS-IBA920326
6. IITA-TMS-IBA940033
7. IITA-TMS-IBA940194
8. IITA-TMS-IBA940255
9. IITA-TMS-KAN950053
10. IITA-TMS-KAN950093
[ 30 others ]
4(2.5%)
4(2.5%)
4(2.5%)
4(2.5%)
4(2.5%)
4(2.5%)
4(2.5%)
4(2.5%)
4(2.5%)
4(2.5%)
120(75.0%)
 0 (0.0%)
variety_alt [logical]
All NA's
 160 (100.0%)
variety_code [integer]
Mean (sd) : 979117.8 (689694.1)
min ≤ med ≤ max:
5 ≤ 1497291 ≤ 1497310
IQR (CV) : 1494678 (0.7)
 40 distinct values 0 (0.0%)
dmy_storage [numeric]
Mean (sd) : 0.6 (0.5)
min ≤ med ≤ max:
0 ≤ 0.5 ≤ 2.1
IQR (CV) : 0.8 (0.9)
 16 distinct values 86 (53.8%)
fwy_storage [integer]
Mean (sd) : 4851.3 (3861)
min ≤ med ≤ max:
300 ≤ 4000 ≤ 25000
IQR (CV) : 4500 (0.8)
 64 distinct values 8 (5.0%)
yield_part [character] 1. roots
160(100.0%)
 0 (0.0%)
yield [integer]
Mean (sd) : 4851.3 (3861)
min ≤ med ≤ max:
300 ≤ 4000 ≤ 25000
IQR (CV) : 4500 (0.8)
 64 distinct values 8 (5.0%)
N_fertilizer [logical]
All NA's
 160 (100.0%)
P_fertilizer [logical]
All NA's
 160 (100.0%)
K_fertilizer [logical]
All NA's
 160 (100.0%)
irrigated [logical]
All NA's
 160 (100.0%)
plot_length [logical]
All NA's
 160 (100.0%)
plot_width [logical]
All NA's
 160 (100.0%)