This report describes standardized data for “Advanced Yield Trial using 14 accessions in Mokwa selected from 2015_2016 PYT.27 and CET.IB”. 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 (2017). Advanced Yield Trial using 14 accessions in Mokwa selected from 2015_2016 PYT.27 and CET.IB. International Institute of Tropical Agriculture (IITA). Not versioned. doi:10.25502/QD7Y-V203

The dataset has 42 records and 27 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 fwy_storage fwy_residue yield_part yield N_fertilizer P_fertilizer K_fertilizer irrigated plot_length plot_width
Nigeria Mokwa 5.31025 9.23942 TRUE 16.GS.C2.res.AYT.14.MK 2016-07-26 2017-07-20 FALSE FALSE 1 cassava IITA-TMS-IBA000070 NA 1936 1562.50 1093.75 roots 1562.50 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 16.GS.C2.res.AYT.14.MK 2016-07-26 2017-07-20 FALSE FALSE 1 cassava IITA-TMS-IBA30572 NA 5 1343.75 1031.25 roots 1343.75 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 16.GS.C2.res.AYT.14.MK 2016-07-26 2017-07-20 FALSE FALSE 1 cassava IITA-TMS-IBA980581 NA 723 1468.75 2187.50 roots 1468.75 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 16.GS.C2.res.AYT.14.MK 2016-07-26 2017-07-20 FALSE FALSE 1 cassava IITA-TMS-IBA982101 NA 725 1906.25 2812.50 roots 1906.25 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 16.GS.C2.res.AYT.14.MK 2016-07-26 2017-07-20 FALSE FALSE 1 cassava TMEB419 NA 39671 1562.50 1312.50 roots 1562.50 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 16.GS.C2.res.AYT.14.MK 2016-07-26 2017-07-20 FALSE FALSE 1 cassava TMS13F1126P0003 NA 51173 906.25 718.75 roots 906.25 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 16.GS.C2.res.AYT.14.MK 2016-07-26 2017-07-20 FALSE FALSE 1 cassava TMS14F1014P0017 NA 58302 1468.75 2218.75 roots 1468.75 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 16.GS.C2.res.AYT.14.MK 2016-07-26 2017-07-20 FALSE FALSE 1 cassava TMS14F1035P0008 NA 56574 2406.25 2593.75 roots 2406.25 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 16.GS.C2.res.AYT.14.MK 2016-07-26 2017-07-20 FALSE FALSE 1 cassava TMS14F1042P0001 NA 56601 1031.25 2000.00 roots 1031.25 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 16.GS.C2.res.AYT.14.MK 2016-07-26 2017-07-20 FALSE FALSE 1 cassava TMS14F1283P0008 NA 49930 1218.75 2218.75 roots 1218.75 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 16.GS.C2.res.AYT.14.MK 2016-07-26 2017-07-20 FALSE FALSE 1 cassava TMS14F1283P0017 NA 49939 1718.75 1843.75 roots 1718.75 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 16.GS.C2.res.AYT.14.MK 2016-07-26 2017-07-20 FALSE FALSE 1 cassava TMS14F1284P0008 NA 49950 1750.00 1687.50 roots 1750.00 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 16.GS.C2.res.AYT.14.MK 2016-07-26 2017-07-20 FALSE FALSE 1 cassava TMS14F1285P0006 NA 50034 1250.00 1562.50 roots 1250.00 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 16.GS.C2.res.AYT.14.MK 2016-07-26 2017-07-20 FALSE FALSE 1 cassava TMS14F1288P0008 NA 49707 1187.50 2312.50 roots 1187.50 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 16.GS.C2.res.AYT.14.MK 2016-07-26 2017-07-20 FALSE FALSE 2 cassava IITA-TMS-IBA000070 NA 1936 1906.25 1656.25 roots 1906.25 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 16.GS.C2.res.AYT.14.MK 2016-07-26 2017-07-20 FALSE FALSE 2 cassava IITA-TMS-IBA30572 NA 5 1531.25 3125.00 roots 1531.25 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 16.GS.C2.res.AYT.14.MK 2016-07-26 2017-07-20 FALSE FALSE 2 cassava IITA-TMS-IBA980581 NA 723 1656.25 3250.00 roots 1656.25 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 16.GS.C2.res.AYT.14.MK 2016-07-26 2017-07-20 FALSE FALSE 2 cassava IITA-TMS-IBA982101 NA 725 1281.25 1750.00 roots 1281.25 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 16.GS.C2.res.AYT.14.MK 2016-07-26 2017-07-20 FALSE FALSE 2 cassava TMEB419 NA 39671 1906.25 1468.75 roots 1906.25 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 16.GS.C2.res.AYT.14.MK 2016-07-26 2017-07-20 FALSE FALSE 2 cassava TMS13F1126P0003 NA 51173 937.50 1625.00 roots 937.50 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 16.GS.C2.res.AYT.14.MK 2016-07-26 2017-07-20 FALSE FALSE 2 cassava TMS14F1014P0017 NA 58302 875.00 2656.25 roots 875.00 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 16.GS.C2.res.AYT.14.MK 2016-07-26 2017-07-20 FALSE FALSE 2 cassava TMS14F1035P0008 NA 56574 1750.00 2156.25 roots 1750.00 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 16.GS.C2.res.AYT.14.MK 2016-07-26 2017-07-20 FALSE FALSE 2 cassava TMS14F1042P0001 NA 56601 1937.50 2000.00 roots 1937.50 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 16.GS.C2.res.AYT.14.MK 2016-07-26 2017-07-20 FALSE FALSE 2 cassava TMS14F1283P0008 NA 49930 875.00 2000.00 roots 875.00 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 16.GS.C2.res.AYT.14.MK 2016-07-26 2017-07-20 FALSE FALSE 2 cassava TMS14F1283P0017 NA 49939 1375.00 2937.50 roots 1375.00 NA NA NA NA 4 4


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


The standardization script does not emit non-compliance warnings.

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
42(100.0%)
 0 (0.0%)
location [character] 1. Mokwa
42(100.0%)
 0 (0.0%)
geo_from_source [logical] 1. TRUE
42(100.0%)
 0 (0.0%)
trial_id [character] 1. 16.GS.C2.res.AYT.14.
42(100.0%)
 0 (0.0%)
planting_date [character] 1. 2016-07-26
42(100.0%)
 0 (0.0%)
harvest_date [character] 1. 2017-07-20
42(100.0%)
 0 (0.0%)
on_farm [logical] 1. FALSE
42(100.0%)
 0 (0.0%)
is_survey [logical] 1. FALSE
42(100.0%)
 0 (0.0%)
rep [integer]
Mean (sd) : 2 (0.8)
min ≤ med ≤ max:
1 ≤ 2 ≤ 3
IQR (CV) : 2 (0.4)
1:14(33.3%)
2:14(33.3%)
3:14(33.3%)
 0 (0.0%)
crop [character] 1. cassava
42(100.0%)
 0 (0.0%)
variety [character]
1. IITA-TMS-IBA000070
2. IITA-TMS-IBA30572
3. IITA-TMS-IBA980581
4. IITA-TMS-IBA982101
5. TMEB419
6. TMS13F1126P0003
7. TMS14F1014P0017
8. TMS14F1035P0008
9. TMS14F1042P0001
10. TMS14F1283P0008
[ 4 others ]
3(7.1%)
3(7.1%)
3(7.1%)
3(7.1%)
3(7.1%)
3(7.1%)
3(7.1%)
3(7.1%)
3(7.1%)
3(7.1%)
12(28.6%)
 0 (0.0%)
variety_alt [logical]
All NA's
 42 (100.0%)
variety_code [integer]
Mean (sd) : 36805 (23414)
min ≤ med ≤ max:
5 ≤ 49934.5 ≤ 58302
IQR (CV) : 49237 (0.6)
 14 distinct values 0 (0.0%)
fwy_storage [numeric]
Mean (sd) : 1461.3 (388.8)
min ≤ med ≤ max:
875 ≤ 1468.8 ≤ 2406.2
IQR (CV) : 554.7 (0.3)
 24 distinct values 0 (0.0%)
fwy_residue [numeric]
Mean (sd) : 1967.3 (592.8)
min ≤ med ≤ max:
718.8 ≤ 1968.8 ≤ 3250
IQR (CV) : 664.1 (0.3)
 31 distinct values 0 (0.0%)
yield_part [character] 1. roots
42(100.0%)
 0 (0.0%)
yield [numeric]
Mean (sd) : 1461.3 (388.8)
min ≤ med ≤ max:
875 ≤ 1468.8 ≤ 2406.2
IQR (CV) : 554.7 (0.3)
 24 distinct values 0 (0.0%)
N_fertilizer [logical]
All NA's
 42 (100.0%)
P_fertilizer [logical]
All NA's
 42 (100.0%)
K_fertilizer [logical]
All NA's
 42 (100.0%)
irrigated [logical]
All NA's
 42 (100.0%)
plot_length [integer] 1 distinct value
4:42(100.0%)
 0 (0.0%)
plot_width [integer] 1 distinct value
4:42(100.0%)
 0 (0.0%)