This report describes standardized data for “Assessment of Polyploid Varieties of Cassava for high yield and disease resistance in an Uniform Yield Trial (31 clones) in Mokwa 1995/1996 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 (1996). Assessment of Polyploid Varieties of Cassava for high yield and disease resistance in an Uniform Yield Trial (31 clones) in Mokwa 1995/1996 Breeding Season. International Institute of Tropical Agriculture (IITA). doi:10.25502/XYF1-KV27

The dataset has 124 records and 26 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 yield_part yield N_fertilizer P_fertilizer K_fertilizer irrigated plot_length plot_width
doi_10.25502_XYF1-KV27 95uyt31ppMK 1 Nigeria Mokwa 5.31025 9.23942 TRUE 1995-06-14 1996-06-14 FALSE FALSE 1 cassava IITA-TMS-IBA30572 NA 5 32400 roots 32400 NA NA NA NA NA NA
doi_10.25502_XYF1-KV27 95uyt31ppMK 2 Nigeria Mokwa 5.31025 9.23942 TRUE 1995-06-14 1996-06-14 FALSE FALSE 1 cassava IITA-TMS-IBA4(2)1425 NA 246 53600 roots 53600 NA NA NA NA NA NA
doi_10.25502_XYF1-KV27 95uyt31ppMK 3 Nigeria Mokwa 5.31025 9.23942 TRUE 1995-06-14 1996-06-14 FALSE FALSE 1 cassava IITA-TMS-IBA63397 NA 254 45800 roots 45800 NA NA NA NA NA NA
doi_10.25502_XYF1-KV27 95uyt31ppMK 4 Nigeria Mokwa 5.31025 9.23942 TRUE 1995-06-14 1996-06-14 FALSE FALSE 1 cassava IITA-TMS-IBA63397XM.GLAZOVII-7 NA 1375311 17200 roots 17200 NA NA NA NA NA NA
doi_10.25502_XYF1-KV27 95uyt31ppMK 5 Nigeria Mokwa 5.31025 9.23942 TRUE 1995-06-14 1996-06-14 FALSE FALSE 1 cassava IITA-TMS-IBA8101623 NA 1157911 20600 roots 20600 NA NA NA NA NA NA
doi_10.25502_XYF1-KV27 95uyt31ppMK 6 Nigeria Mokwa 5.31025 9.23942 TRUE 1995-06-14 1996-06-14 FALSE FALSE 1 cassava IITA-TMS-IBA8400136 NA 698453 44400 roots 44400 NA NA NA NA NA NA
doi_10.25502_XYF1-KV27 95uyt31ppMK 7 Nigeria Mokwa 5.31025 9.23942 TRUE 1995-06-14 1996-06-14 FALSE FALSE 1 cassava IITA-TMS-IBA8400316 NA 137958 20000 roots 20000 NA NA NA NA NA NA
doi_10.25502_XYF1-KV27 95uyt31ppMK 8 Nigeria Mokwa 5.31025 9.23942 TRUE 1995-06-14 1996-06-14 FALSE FALSE 1 cassava IITA-TMS-IBA8700018-42 NA 137954 33000 roots 33000 NA NA NA NA NA NA
doi_10.25502_XYF1-KV27 95uyt31ppMK 9 Nigeria Mokwa 5.31025 9.23942 TRUE 1995-06-14 1996-06-14 FALSE FALSE 1 cassava IITA-TMS-IBA88112-7 NA 1337647 26800 roots 26800 NA NA NA NA NA NA
doi_10.25502_XYF1-KV27 95uyt31ppMK 10 Nigeria Mokwa 5.31025 9.23942 TRUE 1995-06-14 1996-06-14 FALSE FALSE 1 cassava IITA-TMS-IBA8900001-10 NA 1337649 19200 roots 19200 NA NA NA NA NA NA
doi_10.25502_XYF1-KV27 95uyt31ppMK 11 Nigeria Mokwa 5.31025 9.23942 TRUE 1995-06-14 1996-06-14 FALSE FALSE 1 cassava IITA-TMS-IBA8900001-2 NA 1337650 12600 roots 12600 NA NA NA NA NA NA
doi_10.25502_XYF1-KV27 95uyt31ppMK 12 Nigeria Mokwa 5.31025 9.23942 TRUE 1995-06-14 1996-06-14 FALSE FALSE 1 cassava IITA-TMS-IBA8900003-10 NA 1337651 44400 roots 44400 NA NA NA NA NA NA
doi_10.25502_XYF1-KV27 95uyt31ppMK 13 Nigeria Mokwa 5.31025 9.23942 TRUE 1995-06-14 1996-06-14 FALSE FALSE 1 cassava IITA-TMS-IBA8900003-104 NA 1337652 43400 roots 43400 NA NA NA NA NA NA
doi_10.25502_XYF1-KV27 95uyt31ppMK 14 Nigeria Mokwa 5.31025 9.23942 TRUE 1995-06-14 1996-06-14 FALSE FALSE 1 cassava IITA-TMS-IBA8900003-105 NA 1263552 38600 roots 38600 NA NA NA NA NA NA
doi_10.25502_XYF1-KV27 95uyt31ppMK 15 Nigeria Mokwa 5.31025 9.23942 TRUE 1995-06-14 1996-06-14 FALSE FALSE 1 cassava IITA-TMS-IBA8900003-1 NA 803524 44400 roots 44400 NA NA NA NA NA NA
doi_10.25502_XYF1-KV27 95uyt31ppMK 16 Nigeria Mokwa 5.31025 9.23942 TRUE 1995-06-14 1996-06-14 FALSE FALSE 1 cassava IITA-TMS-IBA8900003-114 NA 1337653 36800 roots 36800 NA NA NA NA NA NA
doi_10.25502_XYF1-KV27 95uyt31ppMK 17 Nigeria Mokwa 5.31025 9.23942 TRUE 1995-06-14 1996-06-14 FALSE FALSE 1 cassava IITA-TMS-IBA8900003-13 NA 1079619 22800 roots 22800 NA NA NA NA NA NA
doi_10.25502_XYF1-KV27 95uyt31ppMK 18 Nigeria Mokwa 5.31025 9.23942 TRUE 1995-06-14 1996-06-14 FALSE FALSE 1 cassava IITA-TMS-IBA8900003-35 NA 1337655 13400 roots 13400 NA NA NA NA NA NA
doi_10.25502_XYF1-KV27 95uyt31ppMK 19 Nigeria Mokwa 5.31025 9.23942 TRUE 1995-06-14 1996-06-14 FALSE FALSE 1 cassava IITA-TMS-IBA8900003-4 NA 1337656 6400 roots 6400 NA NA NA NA NA NA
doi_10.25502_XYF1-KV27 95uyt31ppMK 20 Nigeria Mokwa 5.31025 9.23942 TRUE 1995-06-14 1996-06-14 FALSE FALSE 1 cassava IITA-TMS-IBA8900003-42 NA 1337657 30800 roots 30800 NA NA NA NA NA NA
doi_10.25502_XYF1-KV27 95uyt31ppMK 21 Nigeria Mokwa 5.31025 9.23942 TRUE 1995-06-14 1996-06-14 FALSE FALSE 1 cassava IITA-TMS-IBA8900003-43 NA 1337658 41000 roots 41000 NA NA NA NA NA NA
doi_10.25502_XYF1-KV27 95uyt31ppMK 22 Nigeria Mokwa 5.31025 9.23942 TRUE 1995-06-14 1996-06-14 FALSE FALSE 1 cassava IITA-TMS-IBA8900003-46 NA 1337660 13300 roots 13300 NA NA NA NA NA NA
doi_10.25502_XYF1-KV27 95uyt31ppMK 23 Nigeria Mokwa 5.31025 9.23942 TRUE 1995-06-14 1996-06-14 FALSE FALSE 1 cassava IITA-TMS-IBA8900003-48 NA 1337661 46200 roots 46200 NA NA NA NA NA NA
doi_10.25502_XYF1-KV27 95uyt31ppMK 24 Nigeria Mokwa 5.31025 9.23942 TRUE 1995-06-14 1996-06-14 FALSE FALSE 1 cassava IITA-TMS-IBA8900003-49 NA 1337662 33600 roots 33600 NA NA NA NA NA NA
doi_10.25502_XYF1-KV27 95uyt31ppMK 25 Nigeria Mokwa 5.31025 9.23942 TRUE 1995-06-14 1996-06-14 FALSE FALSE 1 cassava IITA-TMS-IBA8900003-58 NA 1337663 12800 roots 12800 NA NA NA NA NA NA


The dataset has 31 treatments:

treatments
variety
IITA-TMS-IBA30572
IITA-TMS-IBA4(2)1425
IITA-TMS-IBA63397
IITA-TMS-IBA63397XM.GLAZOVII-7
IITA-TMS-IBA8101623
IITA-TMS-IBA8400136
IITA-TMS-IBA8400316
IITA-TMS-IBA8700018-42
IITA-TMS-IBA88112-7
IITA-TMS-IBA8900001-10
IITA-TMS-IBA8900001-2
IITA-TMS-IBA8900003-1
IITA-TMS-IBA8900003-10
IITA-TMS-IBA8900003-104
IITA-TMS-IBA8900003-105
IITA-TMS-IBA8900003-114
IITA-TMS-IBA8900003-13
IITA-TMS-IBA8900003-35
IITA-TMS-IBA8900003-4
IITA-TMS-IBA8900003-42
IITA-TMS-IBA8900003-43
IITA-TMS-IBA8900003-46
IITA-TMS-IBA8900003-48
IITA-TMS-IBA8900003-49
IITA-TMS-IBA8900003-58
IITA-TMS-IBA8900003-72
IITA-TMS-IBA8900003-85
IITA-TMS-IBA8900003-88
IITA-TMS-IBA8900003-94
IITA-TMS-IBA8900003-99
IITA-TMS-IBA91934

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_XYF1-KV
124(100.0%)
 0 (0.0%)
trial_id [character] 1. 95uyt31ppMK
124(100.0%)
 0 (0.0%)
record_id [integer]
Mean (sd) : 62.5 (35.9)
min ≤ med ≤ max:
1 ≤ 62.5 ≤ 124
IQR (CV) : 61.5 (0.6)
 124 distinct values (Integer sequence) 0 (0.0%)
country [character] 1. Nigeria
124(100.0%)
 0 (0.0%)
location [character] 1. Mokwa
124(100.0%)
 0 (0.0%)
geo_from_source [logical] 1. TRUE
124(100.0%)
 0 (0.0%)
planting_date [character] 1. 1995-06-14
124(100.0%)
 0 (0.0%)
harvest_date [character] 1. 1996-06-14
124(100.0%)
 0 (0.0%)
on_farm [logical] 1. FALSE
124(100.0%)
 0 (0.0%)
is_survey [logical] 1. FALSE
124(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)
1:31(25.0%)
2:31(25.0%)
3:31(25.0%)
4:31(25.0%)
 0 (0.0%)
crop [character] 1. cassava
124(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-IBA88112-7
10. IITA-TMS-IBA8900001-
[ 21 others ]
4(3.2%)
4(3.2%)
4(3.2%)
4(3.2%)
4(3.2%)
4(3.2%)
4(3.2%)
4(3.2%)
4(3.2%)
4(3.2%)
84(67.7%)
 0 (0.0%)
variety_alt [logical]
All NA's
 124 (100.0%)
variety_code [integer]
Mean (sd) : 1026214 (506634.4)
min ≤ med ≤ max:
5 ≤ 1337651 ≤ 1375311
IQR (CV) : 534137 (0.5)
 31 distinct values 0 (0.0%)
fwy_storage [integer]
Mean (sd) : 28808.9 (12127.4)
min ≤ med ≤ max:
6400 ≤ 28300 ≤ 59400
IQR (CV) : 18550 (0.4)
 102 distinct values 0 (0.0%)
yield_part [character] 1. roots
124(100.0%)
 0 (0.0%)
yield [integer]
Mean (sd) : 28808.9 (12127.4)
min ≤ med ≤ max:
6400 ≤ 28300 ≤ 59400
IQR (CV) : 18550 (0.4)
 102 distinct values 0 (0.0%)
N_fertilizer [logical]
All NA's
 124 (100.0%)
P_fertilizer [logical]
All NA's
 124 (100.0%)
K_fertilizer [logical]
All NA's
 124 (100.0%)
irrigated [logical]
All NA's
 124 (100.0%)
plot_length [logical]
All NA's
 124 (100.0%)
plot_width [logical]
All NA's
 124 (100.0%)