This report describes standardized data for “Assessment of cassava varieties(polyploidy) in a advanced Yied trial in Mokwa (30 clones) 1997/1998 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 (1998). Assessment of cassava varieties(polyploidy) in a advanced Yied trial in Mokwa (30 clones) 1997/1998 Breeding Season. International Institute of Tropical Agriculture (IITA). doi:10.25502/5D8W-5G15

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_5D8W-5G15 97uyt30ppMK 1 Nigeria Mokwa 5.31025 9.23942 TRUE 1997-07-06 1998-06-29 FALSE FALSE 1 cassava IITA-TMS-IBA30572 NA 5 3.8 13800 NA roots 13800 NA NA NA NA NA NA 0.5
doi_10.25502_5D8W-5G15 97uyt30ppMK 2 Nigeria Mokwa 5.31025 9.23942 TRUE 1997-07-06 1998-06-29 FALSE FALSE 1 cassava IITA-TMS-IBA4(2)1425 NA 246 4.4 16800 NA roots 16800 NA NA NA NA NA NA 0.5
doi_10.25502_5D8W-5G15 97uyt30ppMK 3 Nigeria Mokwa 5.31025 9.23942 TRUE 1997-07-06 1998-06-29 FALSE FALSE 1 cassava IITA-TMS-IBA8200058 NA 268 1.8 9600 NA roots 9600 NA NA NA NA NA NA 0.5
doi_10.25502_5D8W-5G15 97uyt30ppMK 4 Nigeria Mokwa 5.31025 9.23942 TRUE 1997-07-06 1998-06-29 FALSE FALSE 1 cassava IITA-TMS-IBA8900003-1 NA 803524 4.2 19700 NA roots 19700 NA NA NA NA NA NA 0.5
doi_10.25502_5D8W-5G15 97uyt30ppMK 5 Nigeria Mokwa 5.31025 9.23942 TRUE 1997-07-06 1998-06-29 FALSE FALSE 1 cassava IITA-TMS-IBA9100033 NA 803525 4.1 14800 NA roots 14800 NA NA NA NA NA NA 0.5
doi_10.25502_5D8W-5G15 97uyt30ppMK 6 Nigeria Mokwa 5.31025 9.23942 TRUE 1997-07-06 1998-06-29 FALSE FALSE 1 cassava IITA-TMS-IBA9100061 NA 803526 3.9 18500 NA roots 18500 NA NA NA NA NA NA 0.5
doi_10.25502_5D8W-5G15 97uyt30ppMK 7 Nigeria Mokwa 5.31025 9.23942 TRUE 1997-07-06 1998-06-29 FALSE FALSE 1 cassava IITA-TMS-IBA9100078 NA 803527 4.3 13200 NA roots 13200 NA NA NA NA NA NA 0.4
doi_10.25502_5D8W-5G15 97uyt30ppMK 8 Nigeria Mokwa 5.31025 9.23942 TRUE 1997-07-06 1998-06-29 FALSE FALSE 1 cassava IITA-TMS-IBA9100082 NA 803528 2.9 13000 NA roots 13000 NA NA NA NA NA NA 0.5
doi_10.25502_5D8W-5G15 97uyt30ppMK 9 Nigeria Mokwa 5.31025 9.23942 TRUE 1997-07-06 1998-06-29 FALSE FALSE 1 cassava IITA-TMS-IBA9100089 NA 803529 1.7 12600 NA roots 12600 NA NA NA NA NA NA 0.4
doi_10.25502_5D8W-5G15 97uyt30ppMK 10 Nigeria Mokwa 5.31025 9.23942 TRUE 1997-07-06 1998-06-29 FALSE FALSE 1 cassava IITA-TMS-IBA9100090 NA 137955 4.4 19800 NA roots 19800 NA NA NA NA NA NA 0.5
doi_10.25502_5D8W-5G15 97uyt30ppMK 11 Nigeria Mokwa 5.31025 9.23942 TRUE 1997-07-06 1998-06-29 FALSE FALSE 1 cassava IITA-TMS-IBA9100142 NA 803530 4.4 14900 NA roots 14900 NA NA NA NA NA NA 0.4
doi_10.25502_5D8W-5G15 97uyt30ppMK 12 Nigeria Mokwa 5.31025 9.23942 TRUE 1997-07-06 1998-06-29 FALSE FALSE 1 cassava IITA-TMS-IBA9100153 NA 803531 5.6 17900 NA roots 17900 NA NA NA NA NA NA 0.5
doi_10.25502_5D8W-5G15 97uyt30ppMK 13 Nigeria Mokwa 5.31025 9.23942 TRUE 1997-07-06 1998-06-29 FALSE FALSE 1 cassava IITA-TMS-IBA9100255 NA 137953 3.3 13100 NA roots 13100 NA NA NA NA NA NA 0.4
doi_10.25502_5D8W-5G15 97uyt30ppMK 14 Nigeria Mokwa 5.31025 9.23942 TRUE 1997-07-06 1998-06-29 FALSE FALSE 1 cassava IITA-TMS-IBA9100262 NA 803532 2.3 9200 NA roots 9200 NA NA NA NA NA NA 0.3
doi_10.25502_5D8W-5G15 97uyt30ppMK 15 Nigeria Mokwa 5.31025 9.23942 TRUE 1997-07-06 1998-06-29 FALSE FALSE 1 cassava IITA-TMS-IBA921029 NA 803533 2.6 12800 NA roots 12800 NA NA NA NA NA NA 0.5
doi_10.25502_5D8W-5G15 97uyt30ppMK 16 Nigeria Mokwa 5.31025 9.23942 TRUE 1997-07-06 1998-06-29 FALSE FALSE 1 cassava IITA-TMS-IBA921043 NA 802568 4.1 14800 NA roots 14800 NA NA NA NA NA NA 0.5
doi_10.25502_5D8W-5G15 97uyt30ppMK 17 Nigeria Mokwa 5.31025 9.23942 TRUE 1997-07-06 1998-06-29 FALSE FALSE 1 cassava IITA-TMS-IBA921047 NA 802569 5.6 20500 NA roots 20500 NA NA NA NA NA NA 0.5
doi_10.25502_5D8W-5G15 97uyt30ppMK 18 Nigeria Mokwa 5.31025 9.23942 TRUE 1997-07-06 1998-06-29 FALSE FALSE 1 cassava IITA-TMS-IBA921154 NA 802570 5.0 24800 NA roots 24800 NA NA NA NA NA NA 0.5
doi_10.25502_5D8W-5G15 97uyt30ppMK 19 Nigeria Mokwa 5.31025 9.23942 TRUE 1997-07-06 1998-06-29 FALSE FALSE 1 cassava IITA-TMS-IBA921201 NA 803534 2.4 19000 NA roots 19000 NA NA NA NA NA NA 0.6
doi_10.25502_5D8W-5G15 97uyt30ppMK 20 Nigeria Mokwa 5.31025 9.23942 TRUE 1997-07-06 1998-06-29 FALSE FALSE 1 cassava IITA-TMS-IBA930560 NA 803535 3.1 17900 NA roots 17900 NA NA NA NA NA NA 0.5
doi_10.25502_5D8W-5G15 97uyt30ppMK 21 Nigeria Mokwa 5.31025 9.23942 TRUE 1997-07-06 1998-06-29 FALSE FALSE 1 cassava IITA-TMS-IBA930591 NA 39422 4.7 19600 NA roots 19600 NA NA NA NA NA NA 0.6
doi_10.25502_5D8W-5G15 97uyt30ppMK 22 Nigeria Mokwa 5.31025 9.23942 TRUE 1997-07-06 1998-06-29 FALSE FALSE 1 cassava IITA-TMS-IBA930598 NA 803536 5.6 19400 NA roots 19400 NA NA NA NA NA NA 0.5
doi_10.25502_5D8W-5G15 97uyt30ppMK 23 Nigeria Mokwa 5.31025 9.23942 TRUE 1997-07-06 1998-06-29 FALSE FALSE 1 cassava IITA-TMS-IBA930614 NA 137957 5.5 18100 NA roots 18100 NA NA NA NA NA NA 0.7
doi_10.25502_5D8W-5G15 97uyt30ppMK 24 Nigeria Mokwa 5.31025 9.23942 TRUE 1997-07-06 1998-06-29 FALSE FALSE 1 cassava IITA-TMS-IBA930639 NA 803537 5.9 20500 NA roots 20500 NA NA NA NA NA NA 0.5
doi_10.25502_5D8W-5G15 97uyt30ppMK 25 Nigeria Mokwa 5.31025 9.23942 TRUE 1997-07-06 1998-06-29 FALSE FALSE 1 cassava IITA-TMS-IBA930658 NA 803538 6.2 24900 NA roots 24900 NA NA NA NA NA NA 0.5


The dataset has 30 treatments:

treatments
variety
IITA-TMS-IBA30572
IITA-TMS-IBA4(2)1425
IITA-TMS-IBA8200058
IITA-TMS-IBA8900003-1
IITA-TMS-IBA9100033
IITA-TMS-IBA9100061
IITA-TMS-IBA9100078
IITA-TMS-IBA9100082
IITA-TMS-IBA9100089
IITA-TMS-IBA9100090
IITA-TMS-IBA9100142
IITA-TMS-IBA9100153
IITA-TMS-IBA9100255
IITA-TMS-IBA9100262
IITA-TMS-IBA921029
IITA-TMS-IBA921043
IITA-TMS-IBA921047
IITA-TMS-IBA921154
IITA-TMS-IBA921201
IITA-TMS-IBA930560
IITA-TMS-IBA930591
IITA-TMS-IBA930598
IITA-TMS-IBA930614
IITA-TMS-IBA930639
IITA-TMS-IBA930658
IITA-TMS-IBA930665
IITA-TMS-IBA930700
IITA-TMS-IBA930739
IITA-TMS-IBA930796
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_5D8W-5G
120(100.0%)
 0 (0.0%)
trial_id [character] 1. 97uyt30ppMK
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. Mokwa
120(100.0%)
 0 (0.0%)
geo_from_source [logical] 1. TRUE
120(100.0%)
 0 (0.0%)
planting_date [character] 1. 1997-07-06
120(100.0%)
 0 (0.0%)
harvest_date [character] 1. 1998-06-29
120(100.0%)
 0 (0.0%)
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-IBA30572
2. IITA-TMS-IBA4(2)1425
3. IITA-TMS-IBA8200058
4. IITA-TMS-IBA8900003-
5. IITA-TMS-IBA9100033
6. IITA-TMS-IBA9100061
7. IITA-TMS-IBA9100078
8. IITA-TMS-IBA9100082
9. IITA-TMS-IBA9100089
10. IITA-TMS-IBA9100090
[ 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) : 628673 (366406.6)
min ≤ med ≤ max:
5 ≤ 803527.5 ≤ 1495464
IQR (CV) : 665578 (0.6)
 30 distinct values 0 (0.0%)
dmy_storage [numeric]
Mean (sd) : 3.7 (1.2)
min ≤ med ≤ max:
0.3 ≤ 3.8 ≤ 6.3
IQR (CV) : 1.6 (0.3)
 43 distinct values 3 (2.5%)
fwy_storage [integer]
Mean (sd) : 15163.3 (4315.4)
min ≤ med ≤ max:
2400 ≤ 15250 ≤ 24900
IQR (CV) : 5050 (0.3)
 84 distinct values 0 (0.0%)
fwy_residue [logical]
All NA's
 120 (100.0%)
yield_part [character] 1. roots
120(100.0%)
 0 (0.0%)
yield [integer]
Mean (sd) : 15163.3 (4315.4)
min ≤ med ≤ max:
2400 ≤ 15250 ≤ 24900
IQR (CV) : 5050 (0.3)
 84 distinct values 0 (0.0%)
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:
0.1 ≤ 0.5 ≤ 0.8
IQR (CV) : 0.1 (0.2)
0.10:1(0.8%)
0.30:5(4.2%)
0.40:21(17.5%)
0.50:55(45.8%)
0.60:31(25.8%)
0.70:6(5.0%)
0.80:1(0.8%)
 0 (0.0%)