This report describes standardized data for “Assessment of Varieties of Cassava for high yield, disease resistance and leaf retention ability(stay green)using Uniform Yield Trial (30 clones) in Ibadan 2008/2009 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 (2020). Assessment of Varieties of Cassava for high yield, disease resistance and leaf retention ability(stay green)using Uniform Yield Trial (30 clones) in Ibadan 2008/2009 Breeding Season. International Institute of Tropical Agriculture (IITA). doi:10.25502/ZWTX-R002

The dataset has 120 records and 29 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 dmy_storage fwy_storage fwy_residue yield_part yield N_fertilizer P_fertilizer K_fertilizer irrigated plot_length plot_width harvest_index
doi_10.25502_ZWTX-R002 08uyt30sgIb 1 Nigeria Ibadan 3.94704 7.37754 TRUE 2008 NA FALSE FALSE 1 cassava IITA-TMS-BAD9200068 NA 427 4.156250 11875 NA roots 11875 NA NA NA NA NA NA 0.5277778
doi_10.25502_ZWTX-R002 08uyt30sgIb 2 Nigeria Ibadan 3.94704 7.37754 TRUE 2008 NA FALSE FALSE 1 cassava IITA-TMS-IBA010034 NA 4835 6.665000 19375 NA roots 19375 NA NA NA NA NA NA 0.6200000
doi_10.25502_ZWTX-R002 08uyt30sgIb 3 Nigeria Ibadan 3.94704 7.37754 TRUE 2008 NA FALSE FALSE 1 cassava IITA-TMS-IBA010040 NA 4838 8.117500 21250 NA roots 21250 NA NA NA NA NA NA 0.6538462
doi_10.25502_ZWTX-R002 08uyt30sgIb 4 Nigeria Ibadan 3.94704 7.37754 TRUE 2008 NA FALSE FALSE 1 cassava IITA-TMS-IBA011086 NA 4896 3.862500 12500 NA roots 12500 NA NA NA NA NA NA 0.6060606
doi_10.25502_ZWTX-R002 08uyt30sgIb 5 Nigeria Ibadan 3.94704 7.37754 TRUE 2008 NA FALSE FALSE 1 cassava IITA-TMS-IBA011663 NA 1295 0.760500 2250 NA roots 2250 NA NA NA NA NA NA 0.2647059
doi_10.25502_ZWTX-R002 08uyt30sgIb 6 Nigeria Ibadan 3.94704 7.37754 TRUE 2008 NA FALSE FALSE 1 cassava IITA-TMS-IBA011807 NA 4961 7.406250 18750 NA roots 18750 NA NA NA NA NA NA 0.6329114
doi_10.25502_ZWTX-R002 08uyt30sgIb 7 Nigeria Ibadan 3.94704 7.37754 TRUE 2008 NA FALSE FALSE 1 cassava IITA-TMS-IBA020105 NA 9647 2.564375 6875 NA roots 6875 NA NA NA NA NA NA 0.5670103
doi_10.25502_ZWTX-R002 08uyt30sgIb 8 Nigeria Ibadan 3.94704 7.37754 TRUE 2008 NA FALSE FALSE 1 cassava IITA-TMS-IBA020131 NA 9656 0.416250 1250 NA roots 1250 NA NA NA NA NA NA 0.5000000
doi_10.25502_ZWTX-R002 08uyt30sgIb 9 Nigeria Ibadan 3.94704 7.37754 TRUE 2008 NA FALSE FALSE 1 cassava IITA-TMS-IBA020431 NA 9670 NA 1875 NA roots 1875 NA NA NA NA NA NA 0.3488372
doi_10.25502_ZWTX-R002 08uyt30sgIb 10 Nigeria Ibadan 3.94704 7.37754 TRUE 2008 NA FALSE FALSE 1 cassava IITA-TMS-IBA020452 NA 9677 3.469125 10875 NA roots 10875 NA NA NA NA NA NA 0.6350365
doi_10.25502_ZWTX-R002 08uyt30sgIb 11 Nigeria Ibadan 3.94704 7.37754 TRUE 2008 NA FALSE FALSE 1 cassava IITA-TMS-IBA30572 NA 5 4.975000 12500 NA roots 12500 NA NA NA NA NA NA 0.5714286
doi_10.25502_ZWTX-R002 08uyt30sgIb 12 Nigeria Ibadan 3.94704 7.37754 TRUE 2008 NA FALSE FALSE 1 cassava IITA-TMS-IBA9102322 NA 372 4.226250 14375 NA roots 14375 NA NA NA NA NA NA 0.6388889
doi_10.25502_ZWTX-R002 08uyt30sgIb 13 Nigeria Ibadan 3.94704 7.37754 TRUE 2008 NA FALSE FALSE 1 cassava IITA-TMS-IBA9102324 NA 374 5.900000 20000 NA roots 20000 NA NA NA NA NA NA 0.5818182
doi_10.25502_ZWTX-R002 08uyt30sgIb 14 Nigeria Ibadan 3.94704 7.37754 TRUE 2008 NA FALSE FALSE 1 cassava IITA-TMS-IBA91934 NA 380 0.588750 1875 NA roots 1875 NA NA NA NA NA NA 0.4285714
doi_10.25502_ZWTX-R002 08uyt30sgIb 15 Nigeria Ibadan 3.94704 7.37754 TRUE 2008 NA FALSE FALSE 1 cassava IITA-TMS-IBA920067 NA 392 0.380250 1125 NA roots 1125 NA NA NA NA NA NA 0.3750000
doi_10.25502_ZWTX-R002 08uyt30sgIb 16 Nigeria Ibadan 3.94704 7.37754 TRUE 2008 NA FALSE FALSE 1 cassava IITA-TMS-IBA920326 NA 396 2.150000 6250 NA roots 6250 NA NA NA NA NA NA 0.5102041
doi_10.25502_ZWTX-R002 08uyt30sgIb 17 Nigeria Ibadan 3.94704 7.37754 TRUE 2008 NA FALSE FALSE 1 cassava IITA-TMS-IBA930267 NA 439 0.533750 1750 NA roots 1750 NA NA NA NA NA NA 0.2258065
doi_10.25502_ZWTX-R002 08uyt30sgIb 18 Nigeria Ibadan 3.94704 7.37754 TRUE 2008 NA FALSE FALSE 1 cassava IITA-TMS-IBA950166 NA 526 1.379000 3500 NA roots 3500 NA NA NA NA NA NA 0.3835616
doi_10.25502_ZWTX-R002 08uyt30sgIb 19 Nigeria Ibadan 3.94704 7.37754 TRUE 2008 NA FALSE FALSE 1 cassava IITA-TMS-IBA950289 NA 534 5.722500 17500 NA roots 17500 NA NA NA NA NA NA 0.6666667
doi_10.25502_ZWTX-R002 08uyt30sgIb 20 Nigeria Ibadan 3.94704 7.37754 TRUE 2008 NA FALSE FALSE 1 cassava IITA-TMS-IBA961672 NA 1627 3.570000 10000 NA roots 10000 NA NA NA NA NA NA 0.5333333
doi_10.25502_ZWTX-R002 08uyt30sgIb 21 Nigeria Ibadan 3.94704 7.37754 TRUE 2008 NA FALSE FALSE 1 cassava IITA-TMS-IBA980510 NA 1664 0.441250 1250 NA roots 1250 NA NA NA NA NA NA 0.2857143
doi_10.25502_ZWTX-R002 08uyt30sgIb 22 Nigeria Ibadan 3.94704 7.37754 TRUE 2008 NA FALSE FALSE 1 cassava IITA-TMS-IBA980581 NA 723 4.220000 10000 NA roots 10000 NA NA NA NA NA NA 0.5333333
doi_10.25502_ZWTX-R002 08uyt30sgIb 23 Nigeria Ibadan 3.94704 7.37754 TRUE 2008 NA FALSE FALSE 1 cassava IITA-TMS-IBA990240 NA 1680 2.571250 6875 NA roots 6875 NA NA NA NA NA NA 0.4782609
doi_10.25502_ZWTX-R002 08uyt30sgIb 24 Nigeria Ibadan 3.94704 7.37754 TRUE 2008 NA FALSE FALSE 1 cassava IITA-TMS-IBA990554 NA 1694 3.325000 12500 NA roots 12500 NA NA NA NA NA NA 0.5319149
doi_10.25502_ZWTX-R002 08uyt30sgIb 25 Nigeria Ibadan 3.94704 7.37754 TRUE 2008 NA FALSE FALSE 1 cassava IITA-TMS-MH950414 NA 10144 3.475625 10375 NA roots 10375 NA NA NA NA NA NA 0.6384615


The dataset has 30 treatments:

treatments
variety
IITA-TMS-BAD9200068
IITA-TMS-IBA010034
IITA-TMS-IBA010040
IITA-TMS-IBA011086
IITA-TMS-IBA011663
IITA-TMS-IBA011807
IITA-TMS-IBA020105
IITA-TMS-IBA020131
IITA-TMS-IBA020431
IITA-TMS-IBA020452
IITA-TMS-IBA30572
IITA-TMS-IBA9102322
IITA-TMS-IBA9102324
IITA-TMS-IBA91934
IITA-TMS-IBA920067
IITA-TMS-IBA920326
IITA-TMS-IBA930267
IITA-TMS-IBA950166
IITA-TMS-IBA950289
IITA-TMS-IBA961672
IITA-TMS-IBA980510
IITA-TMS-IBA980581
IITA-TMS-IBA990240
IITA-TMS-IBA990554
IITA-TMS-MH950414
IITA-TMS-MM961751
IITA-TMS-MM965280
IITA-TMS-MM96JW1
IITA-TMS-MM972480
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_ZWTX-R0
120(100.0%)
 0 (0.0%)
trial_id [character] 1. 08uyt30sgIb
120(100.0%)
 0 (0.0%)
record_id [integer]
Mean (sd) : 60.5 (34.8)
min ≤ med ≤ max:
1 ≤ 60.5 ≤ 120
IQR (CV) : 59.5 (0.6)
 120 distinct values (Integer sequence) 0 (0.0%)
country [character] 1. Nigeria
120(100.0%)
 0 (0.0%)
location [character] 1. Ibadan
120(100.0%)
 0 (0.0%)
geo_from_source [logical] 1. TRUE
120(100.0%)
 0 (0.0%)
planting_date [integer] 1 distinct value
2008:120(100.0%)
 0 (0.0%)
harvest_date [logical]
All NA's
 120 (100.0%)
on_farm [logical] 1. FALSE
120(100.0%)
 0 (0.0%)
is_survey [logical] 1. FALSE
120(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)
1:30(25.0%)
2:30(25.0%)
3:30(25.0%)
4:30(25.0%)
 0 (0.0%)
crop [character] 1. cassava
120(100.0%)
 0 (0.0%)
variety [character]
1. IITA-TMS-BAD9200068
2. IITA-TMS-IBA010034
3. IITA-TMS-IBA010040
4. IITA-TMS-IBA011086
5. IITA-TMS-IBA011663
6. IITA-TMS-IBA011807
7. IITA-TMS-IBA020105
8. IITA-TMS-IBA020131
9. IITA-TMS-IBA020431
10. IITA-TMS-IBA020452
[ 20 others ]
4(3.3%)
4(3.3%)
4(3.3%)
4(3.3%)
4(3.3%)
4(3.3%)
4(3.3%)
4(3.3%)
4(3.3%)
4(3.3%)
80(66.7%)
 0 (0.0%)
variety_alt [logical]
All NA's
 120 (100.0%)
variety_code [integer]
Mean (sd) : 6860.6 (14725.3)
min ≤ med ≤ max:
5 ≤ 1687 ≤ 75208
IQR (CV) : 6130 (2.1)
 30 distinct values 0 (0.0%)
dmy_storage [numeric]
Mean (sd) : 2.9 (2.1)
min ≤ med ≤ max:
0.2 ≤ 2.6 ≤ 9.1
IQR (CV) : 3.2 (0.7)
 105 distinct values 12 (10.0%)
fwy_storage [integer]
Mean (sd) : 7984.2 (5927.3)
min ≤ med ≤ max:
1125 ≤ 6250 ≤ 25000
IQR (CV) : 10000 (0.7)
 46 distinct values 1 (0.8%)
fwy_residue [logical]
All NA's
 120 (100.0%)
yield_part [character] 1. roots
120(100.0%)
 0 (0.0%)
yield [integer]
Mean (sd) : 7984.2 (5927.3)
min ≤ med ≤ max:
1125 ≤ 6250 ≤ 25000
IQR (CV) : 10000 (0.7)
 46 distinct values 1 (0.8%)
N_fertilizer [logical]
All NA's
 120 (100.0%)
P_fertilizer [logical]
All NA's
 120 (100.0%)
K_fertilizer [logical]
All NA's
 120 (100.0%)
irrigated [logical]
All NA's
 120 (100.0%)
plot_length [logical]
All NA's
 120 (100.0%)
plot_width [logical]
All NA's
 120 (100.0%)
harvest_index [numeric]
Mean (sd) : 0.5 (0.1)
min ≤ med ≤ max:
0.2 ≤ 0.6 ≤ 0.8
IQR (CV) : 0.2 (0.2)
 49 distinct values 60 (50.0%)