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 (25 clones) in Mokwa 2013/2014 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 (2014). Assessment of Varieties of Cassava for high yield, disease resistance and leaf retention ability(stay green) in a Uniformed Yield Trial (25 clones) in Mokwa 2013/2014 Breeding Season. International Institute of Tropical Agriculture (IITA). Not versioned. doi:10.25502/ZFT8-RY56

The dataset has 100 records and 29 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 dmy_storage fwy_storage fwy_residue yield_part yield N_fertilizer P_fertilizer K_fertilizer irrigated plot_length plot_width harvest_index
Nigeria Mokwa 5.31025 9.23942 TRUE 13uyt25sgMK 2013-06-13 2014-07-09 FALSE FALSE 1 cassava IITA-TMS-BAD9200068 NA 427 1.5 7500 909.0909 roots 7500 NA NA NA NA 5.5 6 0.3
Nigeria Mokwa 5.31025 9.23942 TRUE 13uyt25sgMK 2013-06-13 2014-07-09 FALSE FALSE 1 cassava IITA-TMS-IBA011646 NA 1289 4.3 22500 939.3939 roots 22500 NA NA NA NA 5.5 6 0.5
Nigeria Mokwa 5.31025 9.23942 TRUE 13uyt25sgMK 2013-06-13 2014-07-09 FALSE FALSE 1 cassava IITA-TMS-IBA050024 NA 28485 2.0 8800 757.5758 roots 8800 NA NA NA NA 5.5 6 0.4
Nigeria Mokwa 5.31025 9.23942 TRUE 13uyt25sgMK 2013-06-13 2014-07-09 FALSE FALSE 1 cassava IITA-TMS-IBA050303 NA 28446 4.1 15000 1539.3939 roots 15000 NA NA NA NA 5.5 6 0.3
Nigeria Mokwa 5.31025 9.23942 TRUE 13uyt25sgMK 2013-06-13 2014-07-09 FALSE FALSE 1 cassava IITA-TMS-IBA051570 NA 28492 1.7 5600 678.7879 roots 5600 NA NA NA NA 5.5 6 0.3
Nigeria Mokwa 5.31025 9.23942 TRUE 13uyt25sgMK 2013-06-13 2014-07-09 FALSE FALSE 1 cassava IITA-TMS-IBA051599 NA 28442 4.9 18800 787.8788 roots 18800 NA NA NA NA 5.5 6 0.5
Nigeria Mokwa 5.31025 9.23942 TRUE 13uyt25sgMK 2013-06-13 2014-07-09 FALSE FALSE 1 cassava IITA-TMS-IBA061577 NA 38791 2.2 10600 1212.1212 roots 10600 NA NA NA NA 5.5 6 0.3
Nigeria Mokwa 5.31025 9.23942 TRUE 13uyt25sgMK 2013-06-13 2014-07-09 FALSE FALSE 1 cassava IITA-TMS-IBA061630 NA 38793 6.4 23100 909.0909 roots 23100 NA NA NA NA 5.5 6 0.6
Nigeria Mokwa 5.31025 9.23942 TRUE 13uyt25sgMK 2013-06-13 2014-07-09 FALSE FALSE 1 cassava IITA-TMS-IBA061911 NA 38803 5.2 20000 1363.6364 roots 20000 NA NA NA NA 5.5 6 0.4
Nigeria Mokwa 5.31025 9.23942 TRUE 13uyt25sgMK 2013-06-13 2014-07-09 FALSE FALSE 1 cassava IITA-TMS-IBA062116 NA 38806 2.3 11100 466.6667 roots 11100 NA NA NA NA 5.5 6 0.5
Nigeria Mokwa 5.31025 9.23942 TRUE 13uyt25sgMK 2013-06-13 2014-07-09 FALSE FALSE 1 cassava IITA-TMS-IBA062231 NA 38807 2.0 8800 769.6970 roots 8800 NA NA NA NA 5.5 6 0.4
Nigeria Mokwa 5.31025 9.23942 TRUE 13uyt25sgMK 2013-06-13 2014-07-09 FALSE FALSE 1 cassava IITA-TMS-IBA070374 NA 31155 4.5 18800 818.1818 roots 18800 NA NA NA NA 5.5 6 0.5
Nigeria Mokwa 5.31025 9.23942 TRUE 13uyt25sgMK 2013-06-13 2014-07-09 FALSE FALSE 1 cassava IITA-TMS-IBA070520 NA 29536 1.5 7500 757.5758 roots 7500 NA NA NA NA 5.5 6 0.3
Nigeria Mokwa 5.31025 9.23942 TRUE 13uyt25sgMK 2013-06-13 2014-07-09 FALSE FALSE 1 cassava IITA-TMS-IBA070553 NA 29553 1.5 7500 606.0606 roots 7500 NA NA NA NA 5.5 6 0.4
Nigeria Mokwa 5.31025 9.23942 TRUE 13uyt25sgMK 2013-06-13 2014-07-09 FALSE FALSE 1 cassava IITA-TMS-IBA070576 NA 29563 1.3 5600 757.5758 roots 5600 NA NA NA NA 5.5 6 0.3
Nigeria Mokwa 5.31025 9.23942 TRUE 13uyt25sgMK 2013-06-13 2014-07-09 FALSE FALSE 1 cassava IITA-TMS-IBA070649 NA 29574 3.5 13100 727.2727 roots 13100 NA NA NA NA 5.5 6 0.5
Nigeria Mokwa 5.31025 9.23942 TRUE 13uyt25sgMK 2013-06-13 2014-07-09 FALSE FALSE 1 cassava IITA-TMS-IBA070752 NA 29544 4.1 18100 1060.6061 roots 18100 NA NA NA NA 5.5 6 0.5
Nigeria Mokwa 5.31025 9.23942 TRUE 13uyt25sgMK 2013-06-13 2014-07-09 FALSE FALSE 1 cassava IITA-TMS-IBA070756 NA 29548 5.7 21300 1060.6061 roots 21300 NA NA NA NA 5.5 6 0.5
Nigeria Mokwa 5.31025 9.23942 TRUE 13uyt25sgMK 2013-06-13 2014-07-09 FALSE FALSE 1 cassava IITA-TMS-IBA070824 NA 38812 0.8 4300 909.0909 roots 4300 NA NA NA NA 5.5 6 0.2
Nigeria Mokwa 5.31025 9.23942 TRUE 13uyt25sgMK 2013-06-13 2014-07-09 FALSE FALSE 1 cassava IITA-TMS-IBA070835 NA 29521 0.9 4400 981.8182 roots 4400 NA NA NA NA 5.5 6 0.2
Nigeria Mokwa 5.31025 9.23942 TRUE 13uyt25sgMK 2013-06-13 2014-07-09 FALSE FALSE 1 cassava IITA-TMS-IBA9102324 NA 374 5.8 23800 1363.6364 roots 23800 NA NA NA NA 5.5 6 0.5
Nigeria Mokwa 5.31025 9.23942 TRUE 13uyt25sgMK 2013-06-13 2014-07-09 FALSE FALSE 1 cassava IITA-TMS-IBA920057 NA 390 1.8 7500 303.0303 roots 7500 NA NA NA NA 5.5 6 0.5
Nigeria Mokwa 5.31025 9.23942 TRUE 13uyt25sgMK 2013-06-13 2014-07-09 FALSE FALSE 1 cassava IITA-TMS-IBA930267 NA 439 2.7 15600 981.8182 roots 15600 NA NA NA NA 5.5 6 0.4
Nigeria Mokwa 5.31025 9.23942 TRUE 13uyt25sgMK 2013-06-13 2014-07-09 FALSE FALSE 1 cassava IITA-TMS-IBA982132 NA 1669 3.0 11300 472.7273 roots 11300 NA NA NA NA 5.5 6 0.5
Nigeria Mokwa 5.31025 9.23942 TRUE 13uyt25sgMK 2013-06-13 2014-07-09 FALSE FALSE 1 cassava TMEB1 NA 39629 2.1 9500 606.0606 roots 9500 NA NA NA NA 5.5 6 0.4


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
100 harvest_date more than 366 days after planting_date

The overall quality of the dataset, given the completeness of required variables was 5.6 on a scale of 10. See the table below

variable completeness (%)
planting_date 100
harvest_date 100
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
100(100.0%)
 0 (0.0%)
location [character] 1. Mokwa
100(100.0%)
 0 (0.0%)
geo_from_source [logical] 1. TRUE
100(100.0%)
 0 (0.0%)
trial_id [character] 1. 13uyt25sgMK
100(100.0%)
 0 (0.0%)
planting_date [character] 1. 2013-06-13
100(100.0%)
 0 (0.0%)
harvest_date [character] 1. 2014-07-09
100(100.0%)
 0 (0.0%)
on_farm [logical] 1. FALSE
100(100.0%)
 0 (0.0%)
is_survey [logical] 1. FALSE
100(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)
1:25(25.0%)
2:25(25.0%)
3:25(25.0%)
4:25(25.0%)
 0 (0.0%)
crop [character] 1. cassava
100(100.0%)
 0 (0.0%)
variety [character]
1. IITA-TMS-BAD9200068
2. IITA-TMS-IBA011646
3. IITA-TMS-IBA050024
4. IITA-TMS-IBA050303
5. IITA-TMS-IBA051570
6. IITA-TMS-IBA051599
7. IITA-TMS-IBA061577
8. IITA-TMS-IBA061630
9. IITA-TMS-IBA061911
10. IITA-TMS-IBA062116
[ 15 others ]
4(4.0%)
4(4.0%)
4(4.0%)
4(4.0%)
4(4.0%)
4(4.0%)
4(4.0%)
4(4.0%)
4(4.0%)
4(4.0%)
60(60.0%)
 0 (0.0%)
variety_alt [logical]
All NA's
 100 (100.0%)
variety_code [integer]
Mean (sd) : 25155.5 (14372.9)
min ≤ med ≤ max:
374 ≤ 29544 ≤ 39629
IQR (CV) : 10349 (0.6)
 25 distinct values 0 (0.0%)
dmy_storage [numeric]
Mean (sd) : 3.1 (2)
min ≤ med ≤ max:
0.3 ≤ 2.7 ≤ 9
IQR (CV) : 2.9 (0.6)
 55 distinct values 2 (2.0%)
fwy_storage [integer]
Mean (sd) : 13154.5 (7063.4)
min ≤ med ≤ max:
1600 ≤ 13100 ≤ 33800
IQR (CV) : 10600 (0.5)
 55 distinct values 1 (1.0%)
fwy_residue [numeric]
Mean (sd) : 974.4 (419.4)
min ≤ med ≤ max:
121.2 ≤ 909.1 ≤ 2060.6
IQR (CV) : 557.6 (0.4)
 46 distinct values 1 (1.0%)
yield_part [character] 1. roots
100(100.0%)
 0 (0.0%)
yield [integer]
Mean (sd) : 13154.5 (7063.4)
min ≤ med ≤ max:
1600 ≤ 13100 ≤ 33800
IQR (CV) : 10600 (0.5)
 55 distinct values 1 (1.0%)
N_fertilizer [logical]
All NA's
 100 (100.0%)
P_fertilizer [logical]
All NA's
 100 (100.0%)
K_fertilizer [logical]
All NA's
 100 (100.0%)
irrigated [logical]
All NA's
 100 (100.0%)
plot_length [numeric] 1 distinct value
5.50:100(100.0%)
 0 (0.0%)
plot_width [integer] 1 distinct value
6:100(100.0%)
 0 (0.0%)
harvest_index [numeric]
Mean (sd) : 0.4 (0.1)
min ≤ med ≤ max:
0.2 ≤ 0.4 ≤ 0.6
IQR (CV) : 0.2 (0.3)
 5 distinct values 1 (1.0%)