This report describes standardized data for “N2Africa demo - Nigeria, 2014.”. These data were standardized on 2023-08-22 by Rachel Mukami with this R script. The original data are available here under a CC-BY license.

This is the full citation of the data set:

Samuel Adjei-Nsiah; Endalkachew Woldemeskel; Edward Baars; Joost van Heerwaarden; Fred Kanampiu; Ken Giller; Theresa Ampadu-Boakye; Esther Ronner; Regis Chikowo; Peter Ebanyat; Jean-Marie Sanginga; Frederick Baijukya; Paul Woomer; Lloyd Phiphira; Nkeki Kamai (2014). N2Africa demo - Nigeria, 2014. International Institute of Tropical Agriculture (IITA). doi:10.25502/91q9-f709

The dataset has 501 records and 31 variables for 3 crops (cowpea, groundnut, soybean) in Nigeria.


These are the first 25 records:

records
dataset_id trial_id record_id country adm1 adm2 adm3 longitude latitude elevation planting_date harvest_date on_farm is_survey treatment crop variety yield_part yield residue_yield fertilizer_type N_fertilizer P_fertilizer K_fertilizer OM_used OM_type OM_amount inoculated inoculant row_spacing plant_spacing
doi_10.25502_91q9-f709 FB_DEMO_NG0162 1 Nigeria Kaduna Kajuru Kasuwan Magani 7.7 10.4 690 2014-06-25 2014-11-22 TRUE TRUE (-i -p ) soybean Tgx 1955-4f seed 2100 2600 SSP 0 30 0 FALSE NA TRUE 2009 75 10
doi_10.25502_91q9-f709 FB_DEMO_NG0164 2 Nigeria Kaduna Kajuru Kasuwan Magani 7.7 10.4 683 2014-07-02 2014-12-12 TRUE TRUE (+i +p ) soybean Tgx 1904-6f seed 3900 4300 SSP 0 30 0 FALSE NA TRUE 2009 75 10
doi_10.25502_91q9-f709 FB_DEMO_NG0165 3 Nigeria Kaduna Kajuru Kasuwan Magani 7.7 10.4 689 2014-06-23 2014-11-10 TRUE TRUE (-i +p ) soybean Tgx 1904-6f seed 2200 2600 SSP 0 30 0 FALSE NA TRUE 2009 75 10
doi_10.25502_91q9-f709 FB_DEMO_NG0155 4 Nigeria Kaduna Kajuru Rimau Per Kurmin Juwa 7.8 10.4 682 2014-06-28 2014-11-17 TRUE TRUE (-i -p) tgx 1448-2e soybean Tgx 1448-2e seed 1900 2400 SSP 0 30 0 FALSE NA TRUE 200g 75 10
doi_10.25502_91q9-f709 FB_DEMO_NG0164 5 Nigeria Kaduna Kajuru Kasuwan Magani 7.7 10.4 683 2014-07-02 2014-12-12 TRUE TRUE (-i +p ) soybean Tgx 1904-6f seed 3200 3700 SSP 0 30 0 FALSE NA TRUE 2009 75 10
doi_10.25502_91q9-f709 FB_DEMO_NG0149 6 Nigeria Kaduna Kajuru Dutsen-Gaiya 7.7 10.4 708 2014-06-25 2014-11-11 TRUE TRUE (+i -p ) soybean Tgx 1448-2e seed 2900 3400 SSP 0 30 0 FALSE NA TRUE 200gm 75 10
doi_10.25502_91q9-f709 FB_DEMO_NG0150 7 Nigeria Kaduna Kajuru Dutsen-Gaiya 7.1 10.3 703 2014-07-25 2014-10-15 TRUE TRUE (+i +p ) soybean Tgx 1448-2e seed 3850 4250 SSP 0 30 0 FALSE NA TRUE 200gm 75 10
doi_10.25502_91q9-f709 FB_DEMO_NG0150 8 Nigeria Kaduna Kajuru Dutsen-Gaiya 7.1 10.3 703 2014-07-25 2014-10-15 TRUE TRUE (+i -p ) soybean Tgx 1448-2e seed 3050 3450 SSP 0 30 0 FALSE NA TRUE 200gm 75 10
doi_10.25502_91q9-f709 FB_DEMO_NG0149 9 Nigeria Kaduna Kajuru Dutsen-Gaiya 7.7 10.4 708 2014-06-25 2014-11-11 TRUE TRUE (-i -p) tgx 1448-2e soybean Tgx 1448-2e seed 1950 2450 SSP 0 30 0 FALSE NA TRUE 200gm 75 10
doi_10.25502_91q9-f709 FB_DEMO_NG0149 10 Nigeria Kaduna Kajuru Dutsen-Gaiya 7.7 10.4 708 2014-06-25 2014-11-11 TRUE TRUE (-i +p ) soybean Tgx 1448-2e seed 3000 3400 SSP 0 30 0 FALSE NA TRUE 200gm 75 10
doi_10.25502_91q9-f709 FB_DEMO_NG0163 11 Nigeria Kaduna Kajuru Kasuwan Magani 7.7 10.4 675 2014-06-24 2014-11-21 TRUE TRUE (+i +p ) soybean Tgx 1951-3f seed 4050 4500 SSP 0 30 0 FALSE NA TRUE 2009 75 10
doi_10.25502_91q9-f709 FB_DEMO_NG0163 12 Nigeria Kaduna Kajuru Kasuwan Magani 7.7 10.4 675 2014-06-24 2014-11-21 TRUE TRUE (+i -p ) soybean Tgx 1951-3f seed 2100 2500 SSP 0 30 0 FALSE NA TRUE 2009 75 10
doi_10.25502_91q9-f709 FB_DEMO_NG0154 13 Nigeria Kaduna Kajuru Rimau Per Rimau 7.8 10.4 NA 2014-06-26 2014-11-15 TRUE TRUE (-i +p ) soybean Tgx 1904-6f seed 1150 1500 SSP 0 30 0 FALSE NA TRUE 200g 4 75 10
doi_10.25502_91q9-f709 FB_DEMO_NG0156 14 Nigeria Kaduna Kajuru Rimau Per Ikuchi Dam 7.7 10.4 665 2014-06-20 2014-11-03 TRUE TRUE (-i -p) tgx 1448-2e soybean Tgx 1904-6f seed 1250 1700 SSP 0 30 0 FALSE NA TRUE 200g (4g) 75 10
doi_10.25502_91q9-f709 FB_DEMO_NG0151 15 Nigeria Kaduna Kajuru Dutsen-Gaiya 7.7 10.4 709 2014-06-24 2014-11-10 TRUE TRUE (+i +p ) soybean Tgx 1448-2e seed 3550 3950 SSP 0 30 0 FALSE NA TRUE 200gm 75 10
doi_10.25502_91q9-f709 FB_DEMO_NG0150 16 Nigeria Kaduna Kajuru Dutsen-Gaiya 7.1 10.3 703 2014-07-25 2014-10-15 TRUE TRUE (-i -p) tgx 1448-2e soybean Tgx 1448-2e seed 1920 2420 SSP 0 30 0 FALSE NA TRUE 200gm 75 10
doi_10.25502_91q9-f709 FB_DEMO_NG0156 17 Nigeria Kaduna Kajuru Rimau Per Ikuchi Dam 7.7 10.4 665 2014-06-20 2014-11-03 TRUE TRUE (+i -p ) soybean Tgx 1904-6f seed 1900 2500 SSP 0 30 0 FALSE NA TRUE 200g (4g) 75 10
doi_10.25502_91q9-f709 FB_DEMO_NG0162 18 Nigeria Kaduna Kajuru Kasuwan Magani 7.7 10.4 690 2014-06-25 2014-11-22 TRUE TRUE (-i +p ) soybean Tgx 1955-4f seed 4600 5000 SSP 0 30 0 FALSE NA TRUE 2009 75 10
doi_10.25502_91q9-f709 FB_DEMO_NG0156 19 Nigeria Kaduna Kajuru Rimau Per Ikuchi Dam 7.7 10.4 665 2014-06-20 2014-11-03 TRUE TRUE (-i +p ) soybean Tgx 1904-6f seed 750 1300 SSP 0 30 0 FALSE NA TRUE 200g (4g) 75 10
doi_10.25502_91q9-f709 FB_DEMO_NG0156 20 Nigeria Kaduna Kajuru Rimau Per Ikuchi Dam 7.7 10.4 665 2014-06-20 2014-11-03 TRUE TRUE (+i +p ) soybean Tgx 1904-6f seed 1800 2400 SSP 0 30 0 FALSE NA TRUE 200g (4g) 75 10
doi_10.25502_91q9-f709 FB_DEMO_NG0155 21 Nigeria Kaduna Kajuru Rimau Per Kurmin Juwa 7.8 10.4 682 2014-06-28 2014-11-17 TRUE TRUE (-i +p ) soybean Tgx 1448-2e seed 1800 2300 SSP 0 30 0 FALSE NA TRUE 200g 75 10
doi_10.25502_91q9-f709 FB_DEMO_NG0165 22 Nigeria Kaduna Kajuru Kasuwan Magani 7.7 10.4 689 2014-06-23 2014-11-10 TRUE TRUE (+i -p ) soybean Tgx 1904-6f seed 1700 2000 SSP 0 30 0 FALSE NA TRUE 2009 75 10
doi_10.25502_91q9-f709 FB_DEMO_NG0162 23 Nigeria Kaduna Kajuru Kasuwan Magani 7.7 10.4 690 2014-06-25 2014-11-22 TRUE TRUE (+i -p ) soybean Tgx 1955-4f seed 2000 2400 SSP 0 30 0 FALSE NA TRUE 2009 75 10
doi_10.25502_91q9-f709 FB_DEMO_NG0155 24 Nigeria Kaduna Kajuru Rimau Per Kurmin Juwa 7.8 10.4 682 2014-06-28 2014-11-17 TRUE TRUE (+i +p ) soybean Tgx 1448-2e seed 2250 2700 SSP 0 30 0 FALSE NA TRUE 200g 75 10
doi_10.25502_91q9-f709 FB_DEMO_NG0166 25 Nigeria Kaduna Kajuru Dutsen-Gaiya 7.7 10.4 708 2014-06-25 2014-11-11 TRUE TRUE (+i +p ) soybean Tgx 1448-2e seed 4000 4600 SSP 0 30 0 FALSE NA TRUE 200gm 75 10


The observations are for 78 locations, for which we have 40 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_91q9-f7
501(100.0%)
 0 (0.0%)
trial_id [character]
1. FB_DEMO_NG0058
2. FB_DEMO_NG0060
3. FB_DEMO_NG0062
4. FB_DEMO_NG0063
5. FB_DEMO_NG0068
6. FB_DEMO_NG0069
7. FB_DEMO_NG0072
8. FB_DEMO_NG0076
9. FB_DEMO_NG0077
10. FB_DEMO_NG0079
[ 100 others ]
8(1.6%)
8(1.6%)
8(1.6%)
8(1.6%)
8(1.6%)
8(1.6%)
8(1.6%)
8(1.6%)
8(1.6%)
8(1.6%)
421(84.0%)
 0 (0.0%)
record_id [integer]
Mean (sd) : 251 (144.8)
min ≤ med ≤ max:
1 ≤ 251 ≤ 501
IQR (CV) : 250 (0.6)
 501 distinct values (Integer sequence) 0 (0.0%)
country [character] 1. Nigeria
501(100.0%)
 0 (0.0%)
adm1 [character]
1. Kaduna
2. Kano
3. Niger
260(51.9%)
157(31.3%)
84(16.8%)
 0 (0.0%)
adm2 [character]
1. Bichi
2. Bunkure
3. Doguwa
4. Igabi
5. Kajuru
6. Lere
7. Paikoro
8. Shiroro
9. Soba
10. Tundun Wada
11. ZangonKa
18(3.6%)
37(7.4%)
48(9.6%)
4(0.8%)
52(10.4%)
130(25.9%)
64(12.8%)
20(4.0%)
58(11.6%)
54(10.8%)
16(3.2%)
 0 (0.0%)
adm3 [character]
1. Sabon Birni
2. Ugwan Kimba
3. Dutsen-Gaiya
4. Tudun Saibu
5. Saminaka B
6. Kasuwan Magani
7. Lupma
8. Saminaka
9. Saminaks B
10. Korokpam
[ 54 others ]
39(7.8%)
23(4.6%)
20(4.0%)
19(3.8%)
17(3.4%)
16(3.2%)
16(3.2%)
16(3.2%)
16(3.2%)
12(2.4%)
307(61.3%)
 0 (0.0%)
elevation [integer]
Mean (sd) : 1162.2 (727.9)
min ≤ med ≤ max:
3 ≤ 815 ≤ 2543
IQR (CV) : 995 (0.6)
 80 distinct values 74 (14.8%)
planting_date [character]
1. 2014-07-04
2. 2014-06-27
3. 2014-07-05
4. 2014-06-19
5. 2014-07-03
6. 2014-06-20
7. 2014-06-26
8. 2014-06-28
9. 2014-06-24
10. 2014-07-01
[ 37 others ]
53(10.6%)
38(7.6%)
31(6.2%)
27(5.4%)
22(4.4%)
20(4.0%)
20(4.0%)
20(4.0%)
16(3.2%)
16(3.2%)
238(47.5%)
 0 (0.0%)
harvest_date [character]
1. (Empty string)
2. 2014-11-10
3. 2014-11-12
4. 2014-11-14
5. 2014-11-19
6. 2014-11-05
7. 2014-11-15
8. 2014-11-02
9. 2014-11-20
10. 2014-10-20
[ 31 others ]
64(12.8%)
28(5.6%)
28(5.6%)
28(5.6%)
28(5.6%)
23(4.6%)
21(4.2%)
20(4.0%)
20(4.0%)
18(3.6%)
223(44.5%)
 0 (0.0%)
on_farm [logical] 1. TRUE
501(100.0%)
 0 (0.0%)
is_survey [logical] 1. TRUE
501(100.0%)
 0 (0.0%)
treatment [character]
1. + i - p
2. - i + p
3. v1 + p samnut 22
4. (-i +p )
5. (+i -p )
6. (+i +p )
7. v1 + i - p
8. v1 - i + p
9. - i - p
10. + i + p tgx 1904-6f
[ 121 others ]
25(5.0%)
23(4.6%)
18(3.6%)
17(3.4%)
17(3.4%)
17(3.4%)
16(3.2%)
15(3.0%)
13(2.6%)
13(2.6%)
327(65.3%)
 0 (0.0%)
crop [character]
1. cowpea
2. groundnut
3. soybean
15(3.0%)
68(13.6%)
418(83.4%)
 0 (0.0%)
variety [character]
1. Tgx 1448-2e
2. Tgx 1904-6f
3. Tgx 1448
4. Samnut 22
5. Tgx 1904
6. Evdt 2009
7. Tgx 1951-3f
8. Tgx 1951
9. Samnut 23
10. Sam 22
[ 5 others ]
148(29.5%)
124(24.8%)
73(14.6%)
52(10.4%)
48(9.6%)
12(2.4%)
12(2.4%)
9(1.8%)
6(1.2%)
4(0.8%)
13(2.6%)
 0 (0.0%)
yield_part [character] 1. seed
501(100.0%)
 0 (0.0%)
yield [integer]
Mean (sd) : 1660.6 (1187.9)
min ≤ med ≤ max:
200 ≤ 1400 ≤ 7900
IQR (CV) : 1000 (0.7)
 160 distinct values 0 (0.0%)
residue_yield [integer]
Mean (sd) : 3639.3 (2397.4)
min ≤ med ≤ max:
500 ≤ 3420 ≤ 35510
IQR (CV) : 2500 (0.7)
 198 distinct values 0 (0.0%)
fertilizer_type [character]
1. (Empty string)
2. NPK
3. SSP
4. unknown
20(4.0%)
11(2.2%)
463(92.4%)
7(1.4%)
 0 (0.0%)
N_fertilizer [integer] 1 distinct value
0:501(100.0%)
 0 (0.0%)
P_fertilizer [integer]
Min : 0
Mean : 27.7
Max : 30
0:38(7.6%)
30:463(92.4%)
 0 (0.0%)
K_fertilizer [integer] 1 distinct value
0:501(100.0%)
 0 (0.0%)
OM_used [logical]
1. FALSE
2. TRUE
452(90.2%)
49(9.8%)
 0 (0.0%)
OM_type [character]
1. (Empty string)
2. compost
3. farmyard manure
452(90.2%)
32(6.4%)
17(3.4%)
 0 (0.0%)
OM_amount [integer]
Mean (sd) : 500 (1118)
min ≤ med ≤ max:
0 ≤ 0 ≤ 3000
IQR (CV) : 0 (2.2)
0:24(82.8%)
2500:1(3.4%)
3000:4(13.8%)
 472 (94.2%)
inoculated [logical]
1. FALSE
2. TRUE
83(16.6%)
418(83.4%)
 0 (0.0%)
inoculant [character]
1. Legume Fix
2. Rhizobium Legume Fix
3. (Empty string)
4. Rhizobial Legume Fix
5. Rhizobium Legumes Fi
6. 200gm
7. 2009
8. 200g 4
9. Rhizobium Inoculant
10. 200g
[ 5 others ]
146(29.1%)
118(23.6%)
83(16.6%)
48(9.6%)
32(6.4%)
20(4.0%)
16(3.2%)
8(1.6%)
7(1.4%)
4(0.8%)
19(3.8%)
 0 (0.0%)
row_spacing [integer] 1 distinct value
75:501(100.0%)
 0 (0.0%)
plant_spacing [integer]
Min : 10
Mean : 11.7
Max : 20
10:418(83.4%)
20:83(16.6%)
 0 (0.0%)