This report describes standardized data for “Assessment of Cassava varieties for multiple pest resistance ability in a Uniformed Yield Trial (20 clones) in Onne 2001/2002 Breeding Season.”. These data were standardized on 2024-09-18 by Robert Hijmans with this R script. The original data are available here under a CC-BY license.

This is the full citation of the data set:

Kulakow, Peter; Ismail Rabbi; Elizabeth Parkes; Chiedozie Egesi; Olufemi Aina; Prasad Peteti; Agbona Afolabi (2002). Assessment of Cassava varieties for multiple pest resistance ability in a Uniformed Yield Trial (20 clones) in Onne 2001/2002 Breeding Season. International Institute of Tropical Agriculture (IITA). doi:10.25502/6NWA-0Q64

The dataset has 80 records and 27 variables for cassava in Nigeria.


These are the first 25 records:

records
dataset_id trial_id record_id country location longitude latitude geo_from_source 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
doi_10.25502_6NWA-0Q64 01uyt20mprON 1 Nigeria Onne 7.03532 4.74433 TRUE 2001-06-22 2002-04-20 FALSE FALSE 1 cassava IITA-TMS-IBA30572 NA 5 NA NA roots NA NA NA NA NA NA NA
doi_10.25502_6NWA-0Q64 01uyt20mprON 2 Nigeria Onne 7.03532 4.74433 TRUE 2001-06-22 2002-04-20 FALSE FALSE 1 cassava IITA-TMS-IBA4(2)1425 NA 246 NA NA roots NA NA NA NA NA NA NA
doi_10.25502_6NWA-0Q64 01uyt20mprON 3 Nigeria Onne 7.03532 4.74433 TRUE 2001-06-22 2002-04-20 FALSE FALSE 1 cassava IITA-TMS-IBA8200058 NA 268 NA NA roots NA NA NA NA NA NA NA
doi_10.25502_6NWA-0Q64 01uyt20mprON 4 Nigeria Onne 7.03532 4.74433 TRUE 2001-06-22 2002-04-20 FALSE FALSE 1 cassava IITA-TMS-IBA9102324 NA 374 NA NA roots NA NA NA NA NA NA NA
doi_10.25502_6NWA-0Q64 01uyt20mprON 5 Nigeria Onne 7.03532 4.74433 TRUE 2001-06-22 2002-04-20 FALSE FALSE 1 cassava IITA-TMS-IBA950041 NA 516 NA NA roots NA NA NA NA NA NA NA
doi_10.25502_6NWA-0Q64 01uyt20mprON 6 Nigeria Onne 7.03532 4.74433 TRUE 2001-06-22 2002-04-20 FALSE FALSE 1 cassava IITA-TMS-IBA950058 NA 518 NA NA roots NA NA NA NA NA NA NA
doi_10.25502_6NWA-0Q64 01uyt20mprON 7 Nigeria Onne 7.03532 4.74433 TRUE 2001-06-22 2002-04-20 FALSE FALSE 1 cassava IITA-TMS-IBA950061 NA 520 NA NA roots NA NA NA NA NA NA NA
doi_10.25502_6NWA-0Q64 01uyt20mprON 8 Nigeria Onne 7.03532 4.74433 TRUE 2001-06-22 2002-04-20 FALSE FALSE 1 cassava IITA-TMS-IBA950063 NA 522 NA NA roots NA NA NA NA NA NA NA
doi_10.25502_6NWA-0Q64 01uyt20mprON 9 Nigeria Onne 7.03532 4.74433 TRUE 2001-06-22 2002-04-20 FALSE FALSE 1 cassava IITA-TMS-IBA950104 NA 524 NA NA roots NA NA NA NA NA NA NA
doi_10.25502_6NWA-0Q64 01uyt20mprON 10 Nigeria Onne 7.03532 4.74433 TRUE 2001-06-22 2002-04-20 FALSE FALSE 1 cassava IITA-TMS-IBA950180 NA 528 NA NA roots NA NA NA NA NA NA NA
doi_10.25502_6NWA-0Q64 01uyt20mprON 11 Nigeria Onne 7.03532 4.74433 TRUE 2001-06-22 2002-04-20 FALSE FALSE 1 cassava IITA-TMS-IBA950248 NA 530 NA NA roots NA NA NA NA NA NA NA
doi_10.25502_6NWA-0Q64 01uyt20mprON 12 Nigeria Onne 7.03532 4.74433 TRUE 2001-06-22 2002-04-20 FALSE FALSE 1 cassava IITA-TMS-IBA950279 NA 532 NA NA roots NA NA NA NA NA NA NA
doi_10.25502_6NWA-0Q64 01uyt20mprON 13 Nigeria Onne 7.03532 4.74433 TRUE 2001-06-22 2002-04-20 FALSE FALSE 1 cassava IITA-TMS-IBA950289 NA 534 NA NA roots NA NA NA NA NA NA NA
doi_10.25502_6NWA-0Q64 01uyt20mprON 14 Nigeria Onne 7.03532 4.74433 TRUE 2001-06-22 2002-04-20 FALSE FALSE 1 cassava IITA-TMS-IBA950306 NA 538 NA NA roots NA NA NA NA NA NA NA
doi_10.25502_6NWA-0Q64 01uyt20mprON 15 Nigeria Onne 7.03532 4.74433 TRUE 2001-06-22 2002-04-20 FALSE FALSE 1 cassava IITA-TMS-IBA950528 NA 548 NA NA roots NA NA NA NA NA NA NA
doi_10.25502_6NWA-0Q64 01uyt20mprON 16 Nigeria Onne 7.03532 4.74433 TRUE 2001-06-22 2002-04-20 FALSE FALSE 1 cassava IITA-TMS-IBA950645 NA 552 NA NA roots NA NA NA NA NA NA NA
doi_10.25502_6NWA-0Q64 01uyt20mprON 17 Nigeria Onne 7.03532 4.74433 TRUE 2001-06-22 2002-04-20 FALSE FALSE 1 cassava IITA-TMS-IBA960523 NA 609 NA NA roots NA NA NA NA NA NA NA
doi_10.25502_6NWA-0Q64 01uyt20mprON 18 Nigeria Onne 7.03532 4.74433 TRUE 2001-06-22 2002-04-20 FALSE FALSE 1 cassava IITA-TMS-ZAR950402 NA 186 NA NA roots NA NA NA NA NA NA NA
doi_10.25502_6NWA-0Q64 01uyt20mprON 19 Nigeria Onne 7.03532 4.74433 TRUE 2001-06-22 2002-04-20 FALSE FALSE 1 cassava IITA-TMS-ZAR950415 NA 188 NA NA roots NA NA NA NA NA NA NA
doi_10.25502_6NWA-0Q64 01uyt20mprON 20 Nigeria Onne 7.03532 4.74433 TRUE 2001-06-22 2002-04-20 FALSE FALSE 1 cassava TMEB1 NA 39629 NA NA roots NA NA NA NA NA NA NA
doi_10.25502_6NWA-0Q64 01uyt20mprON 21 Nigeria Onne 7.03532 4.74433 TRUE 2001-06-22 2002-04-20 FALSE FALSE 2 cassava IITA-TMS-IBA30572 NA 5 NA NA roots NA NA NA NA NA NA NA
doi_10.25502_6NWA-0Q64 01uyt20mprON 22 Nigeria Onne 7.03532 4.74433 TRUE 2001-06-22 2002-04-20 FALSE FALSE 2 cassava IITA-TMS-IBA4(2)1425 NA 246 NA NA roots NA NA NA NA NA NA NA
doi_10.25502_6NWA-0Q64 01uyt20mprON 23 Nigeria Onne 7.03532 4.74433 TRUE 2001-06-22 2002-04-20 FALSE FALSE 2 cassava IITA-TMS-IBA8200058 NA 268 NA NA roots NA NA NA NA NA NA NA
doi_10.25502_6NWA-0Q64 01uyt20mprON 24 Nigeria Onne 7.03532 4.74433 TRUE 2001-06-22 2002-04-20 FALSE FALSE 2 cassava IITA-TMS-IBA9102324 NA 374 NA NA roots NA NA NA NA NA NA NA
doi_10.25502_6NWA-0Q64 01uyt20mprON 25 Nigeria Onne 7.03532 4.74433 TRUE 2001-06-22 2002-04-20 FALSE FALSE 2 cassava IITA-TMS-IBA950041 NA 516 NA NA roots NA NA NA NA NA NA NA


The dataset has 20 treatments:

treatments
variety
IITA-TMS-IBA30572
IITA-TMS-IBA4(2)1425
IITA-TMS-IBA8200058
IITA-TMS-IBA9102324
IITA-TMS-IBA950041
IITA-TMS-IBA950058
IITA-TMS-IBA950061
IITA-TMS-IBA950063
IITA-TMS-IBA950104
IITA-TMS-IBA950180
IITA-TMS-IBA950248
IITA-TMS-IBA950279
IITA-TMS-IBA950289
IITA-TMS-IBA950306
IITA-TMS-IBA950528
IITA-TMS-IBA950645
IITA-TMS-IBA960523
IITA-TMS-ZAR950402
IITA-TMS-ZAR950415
TMEB1

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


The data are further summarized in the table below

Variable Stats / Values Freqs (% of Valid) Graph Missing
dataset_id [character] 1. doi_10.25502_6NWA-0Q
80(100.0%)
0 (0.0%)
trial_id [character] 1. 01uyt20mprON
80(100.0%)
0 (0.0%)
record_id [integer]
Mean (sd) : 40.5 (23.2)
min ≤ med ≤ max:
1 ≤ 40.5 ≤ 80
IQR (CV) : 39.5 (0.6)
80 distinct values (Integer sequence) 0 (0.0%)
country [character] 1. Nigeria
80(100.0%)
0 (0.0%)
location [character] 1. Onne
80(100.0%)
0 (0.0%)
geo_from_source [logical] 1. TRUE
80(100.0%)
0 (0.0%)
planting_date [character] 1. 2001-06-22
80(100.0%)
0 (0.0%)
harvest_date [character] 1. 2002-04-20
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. IITA-TMS-IBA30572
2. IITA-TMS-IBA4(2)1425
3. IITA-TMS-IBA8200058
4. IITA-TMS-IBA9102324
5. IITA-TMS-IBA950041
6. IITA-TMS-IBA950058
7. IITA-TMS-IBA950061
8. IITA-TMS-IBA950063
9. IITA-TMS-IBA950104
10. IITA-TMS-IBA950180
[ 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) : 2393.3 (8597.9)
min ≤ med ≤ max:
5 ≤ 523 ≤ 39629
IQR (CV) : 187.5 (3.6)
20 distinct values 0 (0.0%)
fwy_storage [logical]
All NA's
80 (100.0%)
fwy_residue [logical]
All NA's
80 (100.0%)
yield_part [character] 1. roots
80(100.0%)
0 (0.0%)
yield [logical]
All NA's
80 (100.0%)
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%)