This report describes standardized data for “Assessment of Polyploid Varieties of Cassava for high yield and disease resistance in an Advanced Yield Trial (32 clones) in Onne 1993/1994 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 (1994). Assessment of Polyploid Varieties of Cassava for high yield and disease resistance in an Advanced Yield Trial (32 clones) in Onne 1993/1994 Breeding Season. International Institute of Tropical Agriculture (IITA). Not versioned. doi:10.25502/0S10-QA83

The dataset has 128 records and 29 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 fwy_residue yield_part yield N_fertilizer P_fertilizer K_fertilizer irrigated plot_length plot_width harvest_index
Nigeria Onne 7.03532 4.74433 TRUE 93AYT32ppON 1993-07-13 1994-07-29 FALSE FALSE 1 cassava IITA-TMS-IBA30572 NA 5 1.0 5000 NA roots 5000 NA NA NA NA NA NA 0.3
Nigeria Onne 7.03532 4.74433 TRUE 93AYT32ppON 1993-07-13 1994-07-29 FALSE FALSE 1 cassava IITA-TMS-IBA4(2)1425 NA 246 3.2 12200 NA roots 12200 NA NA NA NA NA NA 0.6
Nigeria Onne 7.03532 4.74433 TRUE 93AYT32ppON 1993-07-13 1994-07-29 FALSE FALSE 1 cassava IITA-TMS-IBA63397 NA 254 4.1 23800 NA roots 23800 NA NA NA NA NA NA 0.5
Nigeria Onne 7.03532 4.74433 TRUE 93AYT32ppON 1993-07-13 1994-07-29 FALSE FALSE 1 cassava IITA-TMS-IBA63397XM.GLAZOVII-7 NA 1375311 5.3 18700 NA roots 18700 NA NA NA NA NA NA 0.5
Nigeria Onne 7.03532 4.74433 TRUE 93AYT32ppON 1993-07-13 1994-07-29 FALSE FALSE 1 cassava IITA-TMS-IBA8101623 NA 1157911 2.7 16900 NA roots 16900 NA NA NA NA NA NA 0.7
Nigeria Onne 7.03532 4.74433 TRUE 93AYT32ppON 1993-07-13 1994-07-29 FALSE FALSE 1 cassava IITA-TMS-IBA8400136 NA 698453 4.6 22000 NA roots 22000 NA NA NA NA NA NA 0.7
Nigeria Onne 7.03532 4.74433 TRUE 93AYT32ppON 1993-07-13 1994-07-29 FALSE FALSE 1 cassava IITA-TMS-IBA8400316 NA 137958 11.7 27200 NA roots 27200 NA NA NA NA NA NA 0.7
Nigeria Onne 7.03532 4.74433 TRUE 93AYT32ppON 1993-07-13 1994-07-29 FALSE FALSE 1 cassava IITA-TMS-IBA8700018-28 NA 1337646 0.8 3100 NA roots 3100 NA NA NA NA NA NA 0.4
Nigeria Onne 7.03532 4.74433 TRUE 93AYT32ppON 1993-07-13 1994-07-29 FALSE FALSE 1 cassava IITA-TMS-IBA8700018-42 NA 137954 4.3 19500 NA roots 19500 NA NA NA NA NA NA 0.6
Nigeria Onne 7.03532 4.74433 TRUE 93AYT32ppON 1993-07-13 1994-07-29 FALSE FALSE 1 cassava IITA-TMS-IBA88112-7 NA 1337647 3.9 13400 NA roots 13400 NA NA NA NA NA NA 0.6
Nigeria Onne 7.03532 4.74433 TRUE 93AYT32ppON 1993-07-13 1994-07-29 FALSE FALSE 1 cassava IITA-TMS-IBA8900001-10 NA 1337649 4.7 25200 NA roots 25200 NA NA NA NA NA NA 0.6
Nigeria Onne 7.03532 4.74433 TRUE 93AYT32ppON 1993-07-13 1994-07-29 FALSE FALSE 1 cassava IITA-TMS-IBA8900001-13 NA 1337793 9.8 26200 NA roots 26200 NA NA NA NA NA NA 0.6
Nigeria Onne 7.03532 4.74433 TRUE 93AYT32ppON 1993-07-13 1994-07-29 FALSE FALSE 1 cassava IITA-TMS-IBA8900001-2 NA 1337650 10.5 44000 NA roots 44000 NA NA NA NA NA NA 0.6
Nigeria Onne 7.03532 4.74433 TRUE 93AYT32ppON 1993-07-13 1994-07-29 FALSE FALSE 1 cassava IITA-TMS-IBA8900003-10 NA 1337651 12.0 34900 NA roots 34900 NA NA NA NA NA NA 0.5
Nigeria Onne 7.03532 4.74433 TRUE 93AYT32ppON 1993-07-13 1994-07-29 FALSE FALSE 1 cassava IITA-TMS-IBA8900003-104 NA 1337652 6.1 20100 NA roots 20100 NA NA NA NA NA NA 0.6
Nigeria Onne 7.03532 4.74433 TRUE 93AYT32ppON 1993-07-13 1994-07-29 FALSE FALSE 1 cassava IITA-TMS-IBA8900003-105 NA 1263552 5.3 16500 NA roots 16500 NA NA NA NA NA NA 0.5
Nigeria Onne 7.03532 4.74433 TRUE 93AYT32ppON 1993-07-13 1994-07-29 FALSE FALSE 1 cassava IITA-TMS-IBA8900003-1 NA 803524 9.5 31200 NA roots 31200 NA NA NA NA NA NA 0.7
Nigeria Onne 7.03532 4.74433 TRUE 93AYT32ppON 1993-07-13 1994-07-29 FALSE FALSE 1 cassava IITA-TMS-IBA8900003-114 NA 1337653 4.8 22500 NA roots 22500 NA NA NA NA NA NA 0.7
Nigeria Onne 7.03532 4.74433 TRUE 93AYT32ppON 1993-07-13 1994-07-29 FALSE FALSE 1 cassava IITA-TMS-IBA8900003-35 NA 1337655 5.0 16000 NA roots 16000 NA NA NA NA NA NA 0.5
Nigeria Onne 7.03532 4.74433 TRUE 93AYT32ppON 1993-07-13 1994-07-29 FALSE FALSE 1 cassava IITA-TMS-IBA8900003-4 NA 1337656 3.1 11000 NA roots 11000 NA NA NA NA NA NA 0.6
Nigeria Onne 7.03532 4.74433 TRUE 93AYT32ppON 1993-07-13 1994-07-29 FALSE FALSE 1 cassava IITA-TMS-IBA8900003-42 NA 1337657 11.7 34500 NA roots 34500 NA NA NA NA NA NA 0.6
Nigeria Onne 7.03532 4.74433 TRUE 93AYT32ppON 1993-07-13 1994-07-29 FALSE FALSE 1 cassava IITA-TMS-IBA8900003-43 NA 1337658 5.1 19500 NA roots 19500 NA NA NA NA NA NA 0.6
Nigeria Onne 7.03532 4.74433 TRUE 93AYT32ppON 1993-07-13 1994-07-29 FALSE FALSE 1 cassava IITA-TMS-IBA8900003-46 NA 1337660 3.2 14000 NA roots 14000 NA NA NA NA NA NA 0.5
Nigeria Onne 7.03532 4.74433 TRUE 93AYT32ppON 1993-07-13 1994-07-29 FALSE FALSE 1 cassava IITA-TMS-IBA8900003-48 NA 1337661 10.5 27800 NA roots 27800 NA NA NA NA NA NA 0.6
Nigeria Onne 7.03532 4.74433 TRUE 93AYT32ppON 1993-07-13 1994-07-29 FALSE FALSE 1 cassava IITA-TMS-IBA8900003-49 NA 1337662 5.5 20000 NA roots 20000 NA NA NA NA NA NA 0.5


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


The standardization script emits the following non-compliance warnings.

message
128 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
128(100.0%)
0 (0.0%)
location [character] 1. Onne
128(100.0%)
0 (0.0%)
geo_from_source [logical] 1. TRUE
128(100.0%)
0 (0.0%)
trial_id [character] 1. 93AYT32ppON
128(100.0%)
0 (0.0%)
planting_date [character] 1. 1993-07-13
128(100.0%)
0 (0.0%)
harvest_date [character] 1. 1994-07-29
128(100.0%)
0 (0.0%)
on_farm [logical] 1. FALSE
128(100.0%)
0 (0.0%)
is_survey [logical] 1. FALSE
128(100.0%)
0 (0.0%)
rep [integer]
Mean (sd) : 2.5 (1.1)
min ≤ med ≤ max:
1 ≤ 2.5 ≤ 4
IQR (CV) : 1.5 (0.4)
1:32(25.0%)
2:32(25.0%)
3:32(25.0%)
4:32(25.0%)
0 (0.0%)
crop [character] 1. cassava
128(100.0%)
0 (0.0%)
variety [character]
1. IITA-TMS-IBA30572
2. IITA-TMS-IBA4(2)1425
3. IITA-TMS-IBA63397
4. IITA-TMS-IBA63397XM.
5. IITA-TMS-IBA8101623
6. IITA-TMS-IBA8400136
7. IITA-TMS-IBA8400316
8. IITA-TMS-IBA8700018-
9. IITA-TMS-IBA8700018-
10. IITA-TMS-IBA88112-7
[ 22 others ]
4(3.1%)
4(3.1%)
4(3.1%)
4(3.1%)
4(3.1%)
4(3.1%)
4(3.1%)
4(3.1%)
4(3.1%)
4(3.1%)
88(68.8%)
0 (0.0%)
variety_alt [logical]
All NA's
128 (100.0%)
variety_code [integer]
Mean (sd) : 1044014 (504279.1)
min ≤ med ≤ max:
5 ≤ 1337652 ≤ 1375311
IQR (CV) : 327065.2 (0.5)
32 distinct values 0 (0.0%)
dmy_storage [numeric]
Mean (sd) : 5.3 (2.7)
min ≤ med ≤ max:
0.5 ≤ 4.8 ≤ 14
IQR (CV) : 3.5 (0.5)
73 distinct values 0 (0.0%)
fwy_storage [integer]
Mean (sd) : 21981.2 (7728.7)
min ≤ med ≤ max:
3100 ≤ 21700 ≤ 44000
IQR (CV) : 11475 (0.4)
99 distinct values 0 (0.0%)
fwy_residue [logical]
All NA's
128 (100.0%)
yield_part [character] 1. roots
128(100.0%)
0 (0.0%)
yield [integer]
Mean (sd) : 21981.2 (7728.7)
min ≤ med ≤ max:
3100 ≤ 21700 ≤ 44000
IQR (CV) : 11475 (0.4)
99 distinct values 0 (0.0%)
N_fertilizer [logical]
All NA's
128 (100.0%)
P_fertilizer [logical]
All NA's
128 (100.0%)
K_fertilizer [logical]
All NA's
128 (100.0%)
irrigated [logical]
All NA's
128 (100.0%)
plot_length [logical]
All NA's
128 (100.0%)
plot_width [logical]
All NA's
128 (100.0%)
harvest_index [numeric]
Mean (sd) : 0.6 (0.1)
min ≤ med ≤ max:
0.3 ≤ 0.6 ≤ 0.8
IQR (CV) : 0.1 (0.2)
0.30:1(0.8%)
0.40:4(3.1%)
0.50:23(18.0%)
0.60:40(31.2%)
0.70:47(36.7%)
0.80:13(10.2%)
0 (0.0%)