This report describes standardized data for “Advanced yield trial in Mokwa using 28 accessions selected from 16.GS.C1.C2.PYT28.MK”. 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 (2018). Advanced yield trial in Mokwa using 28 accessions selected from 16.GS.C1.C2.PYT28.MK. International Institute of Tropical Agriculture (IITA). Not versioned. doi:10.25502/4Q2P-R835

The dataset has 84 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 17.GS.C1.C2.AYT.28.MK 2017-06-10 2018-05-30 FALSE FALSE 1 cassava IITA-TMS-IBA000070 NA 1936 1237.5 875.00 roots 1237.5 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 17.GS.C1.C2.AYT.28.MK 2017-06-10 2018-05-30 FALSE FALSE 1 cassava IITA-TMS-IBA30572 NA 5 887.5 1312.50 roots 887.5 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 17.GS.C1.C2.AYT.28.MK 2017-06-10 2018-05-30 FALSE FALSE 1 cassava IITA-TMS-IBA980581 NA 723 1000.0 2218.75 roots 1000.0 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 17.GS.C1.C2.AYT.28.MK 2017-06-10 2018-05-30 FALSE FALSE 1 cassava IITA-TMS-IBA982101 NA 725 812.5 1937.50 roots 812.5 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 17.GS.C1.C2.AYT.28.MK 2017-06-10 2018-05-30 FALSE FALSE 1 cassava TMEB419 NA 39671 1075.0 1218.75 roots 1075.0 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 17.GS.C1.C2.AYT.28.MK 2017-06-10 2018-05-30 FALSE FALSE 1 cassava TMS13F1012P0004 NA 50259 637.5 250.00 roots 637.5 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 17.GS.C1.C2.AYT.28.MK 2017-06-10 2018-05-30 FALSE FALSE 1 cassava TMS13F1034P0004 NA 50282 1025.0 1687.50 roots 1025.0 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 17.GS.C1.C2.AYT.28.MK 2017-06-10 2018-05-30 FALSE FALSE 1 cassava TMS13F1045P0017 NA 50305 825.0 1562.50 roots 825.0 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 17.GS.C1.C2.AYT.28.MK 2017-06-10 2018-05-30 FALSE FALSE 1 cassava TMS13F1047P0011 NA 51011 325.0 1312.50 roots 325.0 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 17.GS.C1.C2.AYT.28.MK 2017-06-10 2018-05-30 FALSE FALSE 1 cassava TMS13F1053P0002 NA 50330 775.0 1500.00 roots 775.0 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 17.GS.C1.C2.AYT.28.MK 2017-06-10 2018-05-30 FALSE FALSE 1 cassava TMS13F1145P1023 NA 473556 662.5 875.00 roots 662.5 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 17.GS.C1.C2.AYT.28.MK 2017-06-10 2018-05-30 FALSE FALSE 1 cassava TMS13F1160P0005 NA 51239 125.0 1781.25 roots 125.0 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 17.GS.C1.C2.AYT.28.MK 2017-06-10 2018-05-30 FALSE FALSE 1 cassava TMS13F1306P1003 NA 473566 1175.0 1250.00 roots 1175.0 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 17.GS.C1.C2.AYT.28.MK 2017-06-10 2018-05-30 FALSE FALSE 1 cassava TMS13F1307P0007 NA 52454 862.5 1593.75 roots 862.5 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 17.GS.C1.C2.AYT.28.MK 2017-06-10 2018-05-30 FALSE FALSE 1 cassava TMS13F1343P0038 NA 50779 987.5 843.75 roots 987.5 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 17.GS.C1.C2.AYT.28.MK 2017-06-10 2018-05-30 FALSE FALSE 1 cassava TMS13F1362P0004 NA 50795 950.0 1500.00 roots 950.0 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 17.GS.C1.C2.AYT.28.MK 2017-06-10 2018-05-30 FALSE FALSE 1 cassava TMS13F1439P1004 NA 473573 937.5 1625.00 roots 937.5 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 17.GS.C1.C2.AYT.28.MK 2017-06-10 2018-05-30 FALSE FALSE 1 cassava TMS14F1201P0003 NA 57646 512.5 1437.50 roots 512.5 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 17.GS.C1.C2.AYT.28.MK 2017-06-10 2018-05-30 FALSE FALSE 1 cassava TMS14F1283P0001 NA 49923 1700.0 1937.50 roots 1700.0 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 17.GS.C1.C2.AYT.28.MK 2017-06-10 2018-05-30 FALSE FALSE 1 cassava TMS14F1284P0001 NA 49943 1000.0 1750.00 roots 1000.0 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 17.GS.C1.C2.AYT.28.MK 2017-06-10 2018-05-30 FALSE FALSE 1 cassava TMS14F1284P0009 NA 49951 1275.0 1375.00 roots 1275.0 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 17.GS.C1.C2.AYT.28.MK 2017-06-10 2018-05-30 FALSE FALSE 1 cassava TMS14F1284P0010 NA 49952 1462.5 1937.50 roots 1462.5 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 17.GS.C1.C2.AYT.28.MK 2017-06-10 2018-05-30 FALSE FALSE 1 cassava TMS14F1284P0018 NA 49960 1550.0 1750.00 roots 1550.0 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 17.GS.C1.C2.AYT.28.MK 2017-06-10 2018-05-30 FALSE FALSE 1 cassava TMS14F1284P0019 NA 49961 1300.0 875.00 roots 1300.0 NA NA NA NA 4 4
Nigeria Mokwa 5.31025 9.23942 TRUE 17.GS.C1.C2.AYT.28.MK 2017-06-10 2018-05-30 FALSE FALSE 1 cassava TMS14F1285P0013 NA 49607 1050.0 1562.50 roots 1050.0 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
84(100.0%)
 0 (0.0%)
location [character] 1. Mokwa
84(100.0%)
 0 (0.0%)
geo_from_source [logical] 1. TRUE
84(100.0%)
 0 (0.0%)
trial_id [character] 1. 17.GS.C1.C2.AYT.28.M
84(100.0%)
 0 (0.0%)
planting_date [character] 1. 2017-06-10
84(100.0%)
 0 (0.0%)
harvest_date [character] 1. 2018-05-30
84(100.0%)
 0 (0.0%)
on_farm [logical] 1. FALSE
84(100.0%)
 0 (0.0%)
is_survey [logical] 1. FALSE
84(100.0%)
 0 (0.0%)
rep [integer]
Mean (sd) : 2 (0.8)
min ≤ med ≤ max:
1 ≤ 2 ≤ 3
IQR (CV) : 2 (0.4)
1:28(33.3%)
2:28(33.3%)
3:28(33.3%)
 0 (0.0%)
crop [character] 1. cassava
84(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. TMS13F1012P0004
7. TMS13F1034P0004
8. TMS13F1045P0017
9. TMS13F1047P0011
10. TMS13F1053P0002
[ 18 others ]
3(3.6%)
3(3.6%)
3(3.6%)
3(3.6%)
3(3.6%)
3(3.6%)
3(3.6%)
3(3.6%)
3(3.6%)
3(3.6%)
54(64.3%)
 0 (0.0%)
variety_alt [logical]
All NA's
 84 (100.0%)
variety_code [integer]
Mean (sd) : 88481.9 (135317.5)
min ≤ med ≤ max:
5 ≤ 49960.5 ≤ 473573
IQR (CV) : 1060.5 (1.5)
 28 distinct values 0 (0.0%)
fwy_storage [numeric]
Mean (sd) : 981 (375.7)
min ≤ med ≤ max:
125 ≤ 956.2 ≤ 1925
IQR (CV) : 375 (0.4)
 55 distinct values 0 (0.0%)
fwy_residue [numeric]
Mean (sd) : 1169.3 (449.6)
min ≤ med ≤ max:
125 ≤ 1125 ≤ 2218.8
IQR (CV) : 601.6 (0.4)
 37 distinct values 0 (0.0%)
yield_part [character] 1. roots
84(100.0%)
 0 (0.0%)
yield [numeric]
Mean (sd) : 981 (375.7)
min ≤ med ≤ max:
125 ≤ 956.2 ≤ 1925
IQR (CV) : 375 (0.4)
 55 distinct values 0 (0.0%)
N_fertilizer [logical]
All NA's
 84 (100.0%)
P_fertilizer [logical]
All NA's
 84 (100.0%)
K_fertilizer [logical]
All NA's
 84 (100.0%)
irrigated [logical]
All NA's
 84 (100.0%)
plot_length [integer] 1 distinct value
4:84(100.0%)
 0 (0.0%)
plot_width [integer] 1 distinct value
4:84(100.0%)
 0 (0.0%)