This report describes standardized data for “Assessment of Varieties of Cassava for high yield, disease resistance and leaf retention ability(stay green) in a Uniformed Yield Trial (20 clones) in Mokwa 2006/2007 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 (2007). Assessment of Varieties of Cassava for high yield, disease resistance and leaf retention ability(stay green) in a Uniformed Yield Trial (20 clones) in Mokwa 2006/2007 Breeding Season. International Institute of Tropical Agriculture (IITA). doi:10.25502/5EG2-2030

The dataset has 80 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_5EG2-2030 06uyt20sgMk 1 Nigeria Mokwa 5.31025 9.23942 TRUE 2006-07-15 2007-07-14 FALSE FALSE 1 cassava IITA-TMS-BAD9200068 NA 427 5.578125 14875.0 NA roots 14875.0 NA NA NA NA NA NA 0.4594595
doi_10.25502_5EG2-2030 06uyt20sgMk 2 Nigeria Mokwa 5.31025 9.23942 TRUE 2006-07-15 2007-07-14 FALSE FALSE 1 cassava IITA-TMS-IBA010034 NA 4835 5.265000 16250.0 NA roots 16250.0 NA NA NA NA NA NA 0.4642857
doi_10.25502_5EG2-2030 06uyt20sgMk 3 Nigeria Mokwa 5.31025 9.23942 TRUE 2006-07-15 2007-07-14 FALSE FALSE 1 cassava IITA-TMS-IBA010040 NA 4838 6.020000 17500.0 NA roots 17500.0 NA NA NA NA NA NA 0.5833333
doi_10.25502_5EG2-2030 06uyt20sgMk 4 Nigeria Mokwa 5.31025 9.23942 TRUE 2006-07-15 2007-07-14 FALSE FALSE 1 cassava IITA-TMS-IBA010045 NA 4840 NA 7750.0 NA roots 7750.0 NA NA NA NA NA NA 0.5535714
doi_10.25502_5EG2-2030 06uyt20sgMk 5 Nigeria Mokwa 5.31025 9.23942 TRUE 2006-07-15 2007-07-14 FALSE FALSE 1 cassava IITA-TMS-IBA010098 NA 4850 5.406250 15625.0 NA roots 15625.0 NA NA NA NA NA NA 0.6887052
doi_10.25502_5EG2-2030 06uyt20sgMk 6 Nigeria Mokwa 5.31025 9.23942 TRUE 2006-07-15 2007-07-14 FALSE FALSE 1 cassava IITA-TMS-IBA011086 NA 4896 3.245000 13750.0 NA roots 13750.0 NA NA NA NA NA NA 0.5789474
doi_10.25502_5EG2-2030 06uyt20sgMk 7 Nigeria Mokwa 5.31025 9.23942 TRUE 2006-07-15 2007-07-14 FALSE FALSE 1 cassava IITA-TMS-IBA011663 NA 1295 2.340000 11250.0 NA roots 11250.0 NA NA NA NA NA NA 0.3913043
doi_10.25502_5EG2-2030 06uyt20sgMk 8 Nigeria Mokwa 5.31025 9.23942 TRUE 2006-07-15 2007-07-14 FALSE FALSE 1 cassava IITA-TMS-IBA011739 NA 4943 3.941875 10625.0 NA roots 10625.0 NA NA NA NA NA NA 0.4857143
doi_10.25502_5EG2-2030 06uyt20sgMk 9 Nigeria Mokwa 5.31025 9.23942 TRUE 2006-07-15 2007-07-14 FALSE FALSE 1 cassava IITA-TMS-IBA011760 NA 4951 1.650000 5000.0 NA roots 5000.0 NA NA NA NA NA NA 0.3478261
doi_10.25502_5EG2-2030 06uyt20sgMk 10 Nigeria Mokwa 5.31025 9.23942 TRUE 2006-07-15 2007-07-14 FALSE FALSE 1 cassava IITA-TMS-IBA011800 NA 4959 2.775000 9375.0 NA roots 9375.0 NA NA NA NA NA NA 0.5555556
doi_10.25502_5EG2-2030 06uyt20sgMk 11 Nigeria Mokwa 5.31025 9.23942 TRUE 2006-07-15 2007-07-14 FALSE FALSE 1 cassava IITA-TMS-IBA011807 NA 4961 7.365750 20125.0 NA roots 20125.0 NA NA NA NA NA NA 0.4791667
doi_10.25502_5EG2-2030 06uyt20sgMk 12 Nigeria Mokwa 5.31025 9.23942 TRUE 2006-07-15 2007-07-14 FALSE FALSE 1 cassava IITA-TMS-IBA020105 NA 9647 5.845000 17500.0 NA roots 17500.0 NA NA NA NA NA NA 0.7368421
doi_10.25502_5EG2-2030 06uyt20sgMk 13 Nigeria Mokwa 5.31025 9.23942 TRUE 2006-07-15 2007-07-14 FALSE FALSE 1 cassava IITA-TMS-IBA020131 NA 9656 3.459875 11125.0 NA roots 11125.0 NA NA NA NA NA NA 0.5235294
doi_10.25502_5EG2-2030 06uyt20sgMk 14 Nigeria Mokwa 5.31025 9.23942 TRUE 2006-07-15 2007-07-14 FALSE FALSE 1 cassava IITA-TMS-IBA020431 NA 9670 6.425500 17750.0 NA roots 17750.0 NA NA NA NA NA NA 0.5259259
doi_10.25502_5EG2-2030 06uyt20sgMk 15 Nigeria Mokwa 5.31025 9.23942 TRUE 2006-07-15 2007-07-14 FALSE FALSE 1 cassava IITA-TMS-IBA020452 NA 9677 5.167500 16250.0 NA roots 16250.0 NA NA NA NA NA NA 0.6989247
doi_10.25502_5EG2-2030 06uyt20sgMk 16 Nigeria Mokwa 5.31025 9.23942 TRUE 2006-07-15 2007-07-14 FALSE FALSE 1 cassava IITA-TMS-IBA30572 NA 5 6.129500 18687.5 NA roots 18687.5 NA NA NA NA NA NA 0.5761079
doi_10.25502_5EG2-2030 06uyt20sgMk 17 Nigeria Mokwa 5.31025 9.23942 TRUE 2006-07-15 2007-07-14 FALSE FALSE 1 cassava IITA-TMS-IBA920326 NA 396 3.052500 13750.0 NA roots 13750.0 NA NA NA NA NA NA 0.5500000
doi_10.25502_5EG2-2030 06uyt20sgMk 18 Nigeria Mokwa 5.31025 9.23942 TRUE 2006-07-15 2007-07-14 FALSE FALSE 1 cassava IITA-TMS-IBA930267 NA 439 2.362500 12500.0 NA roots 12500.0 NA NA NA NA NA NA 0.5882353
doi_10.25502_5EG2-2030 06uyt20sgMk 19 Nigeria Mokwa 5.31025 9.23942 TRUE 2006-07-15 2007-07-14 FALSE FALSE 1 cassava IITA-TMS-IBA973200 NA 1648 3.883125 11875.0 NA roots 11875.0 NA NA NA NA NA NA 0.6551724
doi_10.25502_5EG2-2030 06uyt20sgMk 20 Nigeria Mokwa 5.31025 9.23942 TRUE 2006-07-15 2007-07-14 FALSE FALSE 1 cassava TMEB1 NA 39629 5.185000 15250.0 NA roots 15250.0 NA NA NA NA NA NA 0.5495495
doi_10.25502_5EG2-2030 06uyt20sgMk 21 Nigeria Mokwa 5.31025 9.23942 TRUE 2006-07-15 2007-07-14 FALSE FALSE 2 cassava IITA-TMS-BAD9200068 NA 427 5.433750 14375.0 NA roots 14375.0 NA NA NA NA NA NA 0.6149733
doi_10.25502_5EG2-2030 06uyt20sgMk 22 Nigeria Mokwa 5.31025 9.23942 TRUE 2006-07-15 2007-07-14 FALSE FALSE 2 cassava IITA-TMS-IBA010034 NA 4835 4.009750 10750.0 NA roots 10750.0 NA NA NA NA NA NA 0.5103858
doi_10.25502_5EG2-2030 06uyt20sgMk 23 Nigeria Mokwa 5.31025 9.23942 TRUE 2006-07-15 2007-07-14 FALSE FALSE 2 cassava IITA-TMS-IBA010040 NA 4838 4.988000 14500.0 NA roots 14500.0 NA NA NA NA NA NA 0.5771144
doi_10.25502_5EG2-2030 06uyt20sgMk 24 Nigeria Mokwa 5.31025 9.23942 TRUE 2006-07-15 2007-07-14 FALSE FALSE 2 cassava IITA-TMS-IBA010045 NA 4840 2.720000 10000.0 NA roots 10000.0 NA NA NA NA NA NA 0.5714286
doi_10.25502_5EG2-2030 06uyt20sgMk 25 Nigeria Mokwa 5.31025 9.23942 TRUE 2006-07-15 2007-07-14 FALSE FALSE 2 cassava IITA-TMS-IBA010098 NA 4850 3.363750 11250.0 NA roots 11250.0 NA NA NA NA NA NA 0.6000000


The dataset has 20 treatments:

treatments
variety
IITA-TMS-BAD9200068
IITA-TMS-IBA010034
IITA-TMS-IBA010040
IITA-TMS-IBA010045
IITA-TMS-IBA010098
IITA-TMS-IBA011086
IITA-TMS-IBA011663
IITA-TMS-IBA011739
IITA-TMS-IBA011760
IITA-TMS-IBA011800
IITA-TMS-IBA011807
IITA-TMS-IBA020105
IITA-TMS-IBA020131
IITA-TMS-IBA020431
IITA-TMS-IBA020452
IITA-TMS-IBA30572
IITA-TMS-IBA920326
IITA-TMS-IBA930267
IITA-TMS-IBA973200
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_5EG2-20
80(100.0%)
 0 (0.0%)
trial_id [character] 1. 06uyt20sgMk
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. Mokwa
80(100.0%)
 0 (0.0%)
geo_from_source [logical] 1. TRUE
80(100.0%)
 0 (0.0%)
planting_date [character] 1. 2006-07-15
80(100.0%)
 0 (0.0%)
harvest_date [character] 1. 2007-07-14
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-BAD9200068
2. IITA-TMS-IBA010034
3. IITA-TMS-IBA010040
4. IITA-TMS-IBA010045
5. IITA-TMS-IBA010098
6. IITA-TMS-IBA011086
7. IITA-TMS-IBA011663
8. IITA-TMS-IBA011739
9. IITA-TMS-IBA011760
10. IITA-TMS-IBA011800
[ 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) : 6328.1 (8309.8)
min ≤ med ≤ max:
5 ≤ 4873 ≤ 39629
IQR (CV) : 4572.8 (1.3)
 20 distinct values 0 (0.0%)
dmy_storage [numeric]
Mean (sd) : 4.2 (1.4)
min ≤ med ≤ max:
1.6 ≤ 4 ≤ 7.4
IQR (CV) : 2.1 (0.3)
 39 distinct values 41 (51.2%)
fwy_storage [numeric]
Mean (sd) : 14497.7 (4444.3)
min ≤ med ≤ max:
4875 ≤ 14375 ≤ 25000
IQR (CV) : 6250 (0.3)
 52 distinct values 0 (0.0%)
fwy_residue [logical]
All NA's
 80 (100.0%)
yield_part [character] 1. roots
80(100.0%)
 0 (0.0%)
yield [numeric]
Mean (sd) : 14497.7 (4444.3)
min ≤ med ≤ max:
4875 ≤ 14375 ≤ 25000
IQR (CV) : 6250 (0.3)
 52 distinct values 0 (0.0%)
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%)
harvest_index [numeric]
Mean (sd) : 0.6 (0.1)
min ≤ med ≤ max:
0.3 ≤ 0.6 ≤ 0.7
IQR (CV) : 0.1 (0.1)
 38 distinct values 40 (50.0%)