This report describes standardized data for “Assessment of Varieties of Cassava for high yield, disease resistance (cmd) in Demo Trial (40 clones) in Biogbolo, Bayelsa State 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) in Demo Trial (40 clones) in Biogbolo, Bayelsa State 2003/2004 Breeding Season. International Institute of Tropical Agriculture (IITA). Not versioned. doi:10.25502/BBB4-3206

The dataset has 40 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 Bayelsa 5.76508 5.00339 TRUE 03cmd_demo_Bayelsa_Biogbolo 2003 NA FALSE FALSE 1 cassava IITA-TMS-IBA972205 NA 700 15850 NA roots 15850 NA NA NA NA NA NA
Nigeria Bayelsa 5.76508 5.00339 TRUE 03cmd_demo_Bayelsa_Biogbolo 2003 NA FALSE FALSE 1 cassava IITA-TMS-BAD9200068 NA 427 15400 NA roots 15400 NA NA NA NA NA NA
Nigeria Bayelsa 5.76508 5.00339 TRUE 03cmd_demo_Bayelsa_Biogbolo 2003 NA FALSE FALSE 1 cassava IITA-TMS-IBA950289 NA 534 13880 NA roots 13880 NA NA NA NA NA NA
Nigeria Bayelsa 5.76508 5.00339 TRUE 03cmd_demo_Bayelsa_Biogbolo 2003 NA FALSE FALSE 1 cassava IITA-TMS-IBA980002 NA 713 NA NA roots NA NA NA NA NA NA NA
Nigeria Bayelsa 5.76508 5.00339 TRUE 03cmd_demo_Bayelsa_Biogbolo 2003 NA FALSE FALSE 1 cassava IITA-TMS-IBA980006 NA 810214 37300 NA roots 37300 NA NA NA NA NA NA
Nigeria Bayelsa 5.76508 5.00339 TRUE 03cmd_demo_Bayelsa_Biogbolo 2003 NA FALSE FALSE 1 cassava IITA-TMS-IBA4(2)1425 NA 246 18150 NA roots 18150 NA NA NA NA NA NA
Nigeria Bayelsa 5.76508 5.00339 TRUE 03cmd_demo_Bayelsa_Biogbolo 2003 NA FALSE FALSE 1 cassava IITA-TMS-IBA961642 NA 9 15080 NA roots 15080 NA NA NA NA NA NA
Nigeria Bayelsa 5.76508 5.00339 TRUE 03cmd_demo_Bayelsa_Biogbolo 2003 NA FALSE FALSE 1 cassava IITA-TMS-IBA960523 NA 609 7680 NA roots 7680 NA NA NA NA NA NA
Nigeria Bayelsa 5.76508 5.00339 TRUE 03cmd_demo_Bayelsa_Biogbolo 2003 NA FALSE FALSE 1 cassava IITA-TMS-IBA996012 NA 1720 18280 NA roots 18280 NA NA NA NA NA NA
Nigeria Bayelsa 5.76508 5.00339 TRUE 03cmd_demo_Bayelsa_Biogbolo 2003 NA FALSE FALSE 1 cassava IITA-TMS-IBA920057 NA 390 11300 NA roots 11300 NA NA NA NA NA NA
Nigeria Bayelsa 5.76508 5.00339 TRUE 03cmd_demo_Bayelsa_Biogbolo 2003 NA FALSE FALSE 1 cassava IITA-TMS-IBA940561 NA 1041 12080 NA roots 12080 NA NA NA NA NA NA
Nigeria Bayelsa 5.76508 5.00339 TRUE 03cmd_demo_Bayelsa_Biogbolo 2003 NA FALSE FALSE 1 cassava IITA-TMS-IBA970211 NA 675 5900 NA roots 5900 NA NA NA NA NA NA
Nigeria Bayelsa 5.76508 5.00339 TRUE 03cmd_demo_Bayelsa_Biogbolo 2003 NA FALSE FALSE 1 cassava IITA-TMS-IBA940039 NA 497 8050 NA roots 8050 NA NA NA NA NA NA
Nigeria Bayelsa 5.76508 5.00339 TRUE 03cmd_demo_Bayelsa_Biogbolo 2003 NA FALSE FALSE 1 cassava IITA-TMS-IBA950379 NA 540 12430 NA roots 12430 NA NA NA NA NA NA
Nigeria Bayelsa 5.76508 5.00339 TRUE 03cmd_demo_Bayelsa_Biogbolo 2003 NA FALSE FALSE 1 cassava IITA-TMS-IBA30572 NA 5 22150 NA roots 22150 NA NA NA NA NA NA
Nigeria Bayelsa 5.76508 5.00339 TRUE 03cmd_demo_Bayelsa_Biogbolo 2003 NA FALSE FALSE 1 cassava IITA-TMS-IBA974779 NA 711 25680 NA roots 25680 NA NA NA NA NA NA
Nigeria Bayelsa 5.76508 5.00339 TRUE 03cmd_demo_Bayelsa_Biogbolo 2003 NA FALSE FALSE 1 cassava IITA-TMS-IBA940026 NA 493 17900 NA roots 17900 NA NA NA NA NA NA
Nigeria Bayelsa 5.76508 5.00339 TRUE 03cmd_demo_Bayelsa_Biogbolo 2003 NA FALSE FALSE 1 cassava IITA-TMS-BAD9200061 NA 425 9100 NA roots 9100 NA NA NA NA NA NA
Nigeria Bayelsa 5.76508 5.00339 TRUE 03cmd_demo_Bayelsa_Biogbolo 2003 NA FALSE FALSE 1 cassava IITA-TMS-IBA980510 NA 1664 17080 NA roots 17080 NA NA NA NA NA NA
Nigeria Bayelsa 5.76508 5.00339 TRUE 03cmd_demo_Bayelsa_Biogbolo 2003 NA FALSE FALSE 1 cassava IITA-TMS-IBA920067 NA 392 8980 NA roots 8980 NA NA NA NA NA NA
Nigeria Bayelsa 5.76508 5.00339 TRUE 03cmd_demo_Bayelsa_Biogbolo 2003 NA FALSE FALSE 1 cassava IITA-TMS-IBA993073 NA 1714 24730 NA roots 24730 NA NA NA NA NA NA
Nigeria Bayelsa 5.76508 5.00339 TRUE 03cmd_demo_Bayelsa_Biogbolo 2003 NA FALSE FALSE 1 cassava IITA-TMS-IBA961632 NA 665 19900 NA roots 19900 NA NA NA NA NA NA
Nigeria Bayelsa 5.76508 5.00339 TRUE 03cmd_demo_Bayelsa_Biogbolo 2003 NA FALSE FALSE 1 cassava IITA-TMS-IBA920326 NA 396 7650 NA roots 7650 NA NA NA NA NA NA
Nigeria Bayelsa 5.76508 5.00339 TRUE 03cmd_demo_Bayelsa_Biogbolo 2003 NA FALSE FALSE 1 cassava IITA-TMS-IBA974763 NA 1652 6150 NA roots 6150 NA NA NA NA NA NA
Nigeria Bayelsa 5.76508 5.00339 TRUE 03cmd_demo_Bayelsa_Biogbolo 2003 NA FALSE FALSE 1 cassava IITA-TMS-IBA980581 NA 723 5730 NA roots 5730 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 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
40(100.0%)
 0 (0.0%)
location [character] 1. Bayelsa
40(100.0%)
 0 (0.0%)
geo_from_source [logical] 1. TRUE
40(100.0%)
 0 (0.0%)
trial_id [character] 1. 03cmd_demo_Bayelsa_B
40(100.0%)
 0 (0.0%)
planting_date [integer] 1 distinct value
2003:40(100.0%)
 0 (0.0%)
harvest_date [logical]
All NA's
 40 (100.0%)
on_farm [logical] 1. FALSE
40(100.0%)
 0 (0.0%)
is_survey [logical] 1. FALSE
40(100.0%)
 0 (0.0%)
rep [integer] 1 distinct value
1:40(100.0%)
 0 (0.0%)
crop [character] 1. cassava
40(100.0%)
 0 (0.0%)
variety [character]
1. IITA-TMS-BAD9200061
2. IITA-TMS-BAD9200068
3. IITA-TMS-IBA30572
4. IITA-TMS-IBA4(2)1425
5. IITA-TMS-IBA8200058
6. IITA-TMS-IBA9102324
7. IITA-TMS-IBA920057
8. IITA-TMS-IBA920067
9. IITA-TMS-IBA920325
10. IITA-TMS-IBA920326
[ 30 others ]
1(2.5%)
1(2.5%)
1(2.5%)
1(2.5%)
1(2.5%)
1(2.5%)
1(2.5%)
1(2.5%)
1(2.5%)
1(2.5%)
30(75.0%)
 0 (0.0%)
variety_alt [logical]
All NA's
 40 (100.0%)
variety_code [integer]
Mean (sd) : 22012.3 (127969.8)
min ≤ med ≤ max:
5 ≤ 674 ≤ 810214
IQR (CV) : 1222.5 (5.8)
 40 distinct values 0 (0.0%)
fwy_storage [integer]
Mean (sd) : 15019.5 (7894.4)
min ≤ med ≤ max:
2980 ≤ 15080 ≤ 37300
IQR (CV) : 11810 (0.5)
 38 distinct values 1 (2.5%)
fwy_residue [logical]
All NA's
 40 (100.0%)
yield_part [character] 1. roots
40(100.0%)
 0 (0.0%)
yield [integer]
Mean (sd) : 15019.5 (7894.4)
min ≤ med ≤ max:
2980 ≤ 15080 ≤ 37300
IQR (CV) : 11810 (0.5)
 38 distinct values 1 (2.5%)
N_fertilizer [logical]
All NA's
 40 (100.0%)
P_fertilizer [logical]
All NA's
 40 (100.0%)
K_fertilizer [logical]
All NA's
 40 (100.0%)
irrigated [logical]
All NA's
 40 (100.0%)
plot_length [logical]
All NA's
 40 (100.0%)
plot_width [logical]
All NA's
 40 (100.0%)