This report describes standardized data for “TAMASA Tanzania Nutrient Omission Trial (NOT) for 2015/2016 Season”. These data were standardized on 2024-06-13 by Mitchelle Njukuya with this R script. The original data have a CIMMYT license. Because of the restrictions of this license, you need to run the script yourself to get the standardized data.

This is the full citation of the data set:

Kenneth Masuki (2019). TAMASA Tanzania Nutrient Omission Trial (NOT) for 2015/2016 Season. CIMMYT Research Data & Software Repository Network. Version 1.0. hdl:11529/10548217

The dataset has 359 records and 27 variables for 0 crops () in Tanzania.


These are the first 25 records:

records
date country adm1 adm2 adm3 location site longitude latitude geo_from_source elevation soil_pH soil_N soil_K_Mehlich soil_P_Mehlich soil_Ca_Mehlich soil_B_Mehlich soil_Mn_Mehlich soil_Fe_Mehlich soil_S_Mehlich soil_Zn_Mehlich soil_Na_Mehlich soil_Al_Mehlich soil_C soil_EC
2016-01 Tanzania Nkasi Isale Ntuchi - Kanondo Southern Highlands Rukwa 31.13116 -7.692854 TRUE 1614.505 6.57545 0.673456 79.1051 5.54132 386.206 0.220955 100.4890 155.4410 31.5236 0.902945 28.33450 130.830 0.587526 9.86851
2016-01 Tanzania Nkasi Isale Ntuchi - Kanondo Southern Highlands Rukwa 31.13198 -7.697321 TRUE 1617.968 6.74717 0.721623 80.3215 7.38031 361.090 0.215004 67.9747 191.5730 31.5236 1.017080 25.30530 170.939 0.590866 9.29638
2016-01 Tanzania Nkasi Isale Ntuchi - Kanondo Southern Highlands Rukwa 31.12326 -7.699528 TRUE 1605.021 6.69834 1.012400 72.1866 5.14219 419.738 0.230740 58.1204 200.4170 31.5264 0.864208 24.89400 142.897 0.613725 11.75880
2016-01 Tanzania Nkasi Isale Ntuchi - Kanondo Southern Highlands Rukwa 31.12192 -7.694407 TRUE 1594.602 6.60832 0.729790 99.9150 3.18518 137.808 0.176189 74.3295 122.3160 40.4975 1.108590 25.12690 158.468 0.786358 9.51285
2016-01 Tanzania Nkasi Isale Ntuchi - Kasula Southern Highlands Rukwa 31.15149 -7.718998 TRUE 1667.694 6.61460 1.109920 76.4498 9.16179 443.704 0.375053 111.9760 140.1050 31.5236 0.632871 27.88370 143.926 1.154430 12.16510
2016-01 Tanzania Nkasi Isale Kitosi Southern Highlands Rukwa 31.12901 -7.742903 TRUE 1655.744 6.24489 0.871486 82.7731 7.90105 498.937 0.208564 61.1816 168.7750 31.5236 0.755162 21.82620 163.154 0.715717 8.49860
2016-01 Tanzania Nkasi Isale Kitosi Southern Highlands Rukwa 31.14695 -7.762814 TRUE 1720.476 6.70346 0.584992 78.3157 4.37366 378.012 0.241655 97.9838 156.3780 31.5281 1.009030 22.56370 180.236 0.626693 6.39517
2016-01 Tanzania Nkasi Kate Mvimwa - Mission Southern Highlands Rukwa 31.13316 -7.776875 TRUE 1687.319 6.98442 1.276500 120.4630 7.42172 621.328 0.958966 101.0710 121.0160 40.4655 0.697180 8.86333 172.125 1.422210 17.99640
2016-01 Tanzania Nkasi Kate China Southern Highlands Rukwa 31.12481 -7.773765 TRUE 1733.891 6.07782 0.655616 82.3882 4.01845 241.209 0.108714 98.2303 109.0990 31.5236 0.639088 18.70720 282.580 0.562265 7.11111
2016-01 Tanzania Nkasi Kate China Southern Highlands Rukwa 31.11614 -7.760591 TRUE 1711.756 6.49009 1.027010 78.0821 7.89636 598.233 0.388926 59.7553 173.3070 40.2751 0.638211 20.75750 154.485 1.343870 11.79880
2016-01 Tanzania Nkasi Kate China Southern Highlands Rukwa 31.09191 -7.765198 TRUE 1810.732 7.34941 1.181160 78.0539 8.95155 334.910 0.303762 109.7690 123.6540 40.2036 0.645223 22.67100 261.691 1.680920 10.58510
2016-01 Tanzania Nkasi Isale Ntuchi - Kanondo Southern Highlands Rukwa 31.10361 -7.712682 TRUE 1621.536 6.75995 0.773862 80.1996 4.29506 365.836 0.230116 64.4305 205.7110 31.5236 0.774610 23.52670 200.397 0.557006 10.16710
2016-01 Tanzania Nkasi Isale Ntuchi - Kanondo Southern Highlands Rukwa 31.09237 -7.711535 TRUE 1654.651 6.78033 0.826583 81.2058 9.20555 319.499 0.226063 76.2401 161.6260 31.5236 0.763524 17.81810 141.258 0.753095 10.05910
2016-01 Tanzania Nkasi Isale Ntuchi - Kanondo Southern Highlands Rukwa 31.09007 -7.713371 TRUE 1643.074 6.86604 0.880438 79.5057 4.24882 460.233 0.288902 137.0350 122.9840 38.7604 1.374740 24.35170 200.384 1.269340 7.34260
2016-01 Tanzania Nkasi Kate China Southern Highlands Rukwa 31.09518 -7.727933 TRUE 1644.800 6.77715 1.184580 88.0416 4.29390 542.353 0.334200 96.3377 171.7270 40.2751 0.639860 21.51330 187.652 1.548390 9.71812
2016-01 Tanzania Sumbawanga Rural Laela Ndelema Southern Highlands Rukwa 32.03844 -8.525758 TRUE 1614.201 6.56240 0.588518 47.4614 2.56972 280.353 0.213049 146.4390 84.5334 31.4799 0.930684 23.49210 244.033 0.615127 7.58249
2016-01 Tanzania Sumbawanga Rural Laela Ndelema Southern Highlands Rukwa 32.04544 -8.532604 TRUE 1650.252 6.11104 0.710399 49.4034 2.28119 196.841 0.252784 114.1470 73.6961 27.9761 0.641875 25.46660 191.012 0.412496 5.06167
2016-01 Tanzania Sumbawanga Rural Laela Ndelema Southern Highlands Rukwa 32.03795 -8.526696 TRUE 1624.723 6.55870 0.634893 69.4900 3.44900 223.363 0.177494 117.8780 105.8830 31.6431 0.642340 27.13190 199.756 0.600662 4.64884
2016-01 Tanzania Sumbawanga Rural Laela Ndelema Southern Highlands Rukwa 32.01843 -8.534145 TRUE 1569.391 6.34777 0.680008 65.5101 2.34567 312.076 0.161056 113.7800 87.1257 31.4070 0.736733 22.42710 220.584 0.497585 4.91636
2016-01 Tanzania Sumbawanga Rural Laela Ndelema Southern Highlands Rukwa 32.01518 -8.532967 TRUE 1557.309 7.05131 0.533256 58.6973 3.79941 373.037 0.252682 102.0960 128.1820 31.5306 0.950270 26.70970 231.642 0.632864 7.09108
2016-01 Tanzania Sumbawanga Rural Laela Mtindilo Southern Highlands Rukwa 32.04225 -8.567914 TRUE 1539.346 6.45132 0.589629 62.1477 2.32181 329.830 0.210986 111.3060 78.3890 31.6350 0.444344 21.76910 227.636 0.500246 4.61975
2016-01 Tanzania Sumbawanga Rural Laela Maporomoko Southern Highlands Rukwa 32.05192 -8.571865 TRUE 1551.343 6.68010 0.645985 94.2714 2.99485 308.202 0.246240 87.3172 147.3090 31.5248 0.960565 26.06630 213.217 0.704502 5.22327
2016-01 Tanzania Sumbawanga Rural Laela Maporomoko Southern Highlands Rukwa 32.05114 -8.567826 TRUE 1545.641 6.61512 0.705401 65.6166 3.77322 321.322 0.237443 99.6849 101.8020 31.5310 0.648296 23.44160 231.214 0.597915 9.87224
2016-01 Tanzania Sumbawanga Rural Laela Laela Southern Highlands Rukwa 32.01876 -8.596656 TRUE 1535.241 6.37253 0.567325 47.3850 2.56035 386.942 0.225893 86.9230 96.0188 27.9807 0.663836 19.67260 233.981 0.466609 5.30539
2016-01 Tanzania Sumbawanga Rural Laela Laela Southern Highlands Rukwa 32.02174 -8.564693 TRUE 1522.175 7.21967 0.634239 73.2835 3.09978 400.145 0.365736 121.4090 179.4500 30.4650 1.122360 24.30520 240.247 0.519244 8.62212


The observations are for 359 locations, for which we have 359 unique mapped locations.


The standardization script emits the following non-compliance warnings.

message
treatment_vars cannot be ‘none’ for experiments
soil_M_exch
record_id
soil_Al_Mehlich (16.568, 845.082), soil_EC (3.337, 24.82), soil_Na_Mehlich (0.058, 802.74)
duplicates in record_id

The overall quality of the dataset, given the completeness of required variables was 3.3 on a scale of 10. See the table below

variable completeness (%)
planting_date 0
harvest_date 0
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
date [character] 1. 2016-01
359(100.0%)
 0 (0.0%)
country [character] 1. Tanzania
359(100.0%)
 0 (0.0%)
adm1 [character]
1. Mbozi
2. Mbulu
3. Moshi Rural
4. Arumeru
5. Hanang
6. Iringa Rural
7. Kilolo
8. Ludewa
9. Mbeya (R)
10. Mufindi
[ 14 others ]
30(8.4%)
18(5.0%)
16(4.5%)
15(4.2%)
15(4.2%)
15(4.2%)
15(4.2%)
15(4.2%)
15(4.2%)
15(4.2%)
190(52.9%)
 0 (0.0%)
adm2 [character]
1. Isansa
2. Sepeko
3. Kahe
4. Maposeni
5. Rwinga
6. Uwemba
7. Laela
8. Madilu
9. Ulanda
10. Isale
[ 68 others ]
15(4.2%)
14(3.9%)
12(3.3%)
12(3.3%)
12(3.3%)
12(3.3%)
11(3.1%)
11(3.1%)
11(3.1%)
10(2.8%)
239(66.6%)
 0 (0.0%)
adm3 [character]
1. Maposeni
2. Magoda
3. Lendikinya
4. Ndaleta
5. Ntuchi - Kanondo
6. Santilya
7. Vitono
8. Bumilayinga
9. Mwitikira
10. Emboreet
[ 127 others ]
11(3.1%)
10(2.8%)
8(2.2%)
7(1.9%)
7(1.9%)
7(1.9%)
7(1.9%)
6(1.7%)
6(1.7%)
5(1.4%)
285(79.4%)
 0 (0.0%)
location [character]
1. Northern
2. Southern Highlands
164(45.7%)
195(54.3%)
 0 (0.0%)
site [character]
1. Arusha
2. Iringa
3. Kilimanjaro
4. Manyara
5. Mbeya
6. Njombe
7. Rukwa
8. Ruvuma
42(11.7%)
45(12.5%)
47(13.1%)
75(20.9%)
45(12.5%)
45(12.5%)
30(8.4%)
30(8.4%)
 0 (0.0%)
geo_from_source [logical] 1. TRUE
359(100.0%)
 0 (0.0%)
elevation [numeric]
Mean (sd) : 1473.9 (364.9)
min ≤ med ≤ max:
687.9 ≤ 1527.4 ≤ 2163.8
IQR (CV) : 397.5 (0.2)
 359 distinct values 0 (0.0%)
soil_pH [numeric]
Mean (sd) : 6.1 (0.5)
min ≤ med ≤ max:
4.6 ≤ 6.1 ≤ 7.9
IQR (CV) : 0.7 (0.1)
 359 distinct values 0 (0.0%)
soil_N [numeric]
Mean (sd) : 0.8 (0.4)
min ≤ med ≤ max:
0.3 ≤ 0.7 ≤ 2.7
IQR (CV) : 0.5 (0.5)
 359 distinct values 0 (0.0%)
soil_K_Mehlich [numeric]
Mean (sd) : 40.1 (37.9)
min ≤ med ≤ max:
1.7 ≤ 27.3 ≤ 205.7
IQR (CV) : 54.5 (0.9)
 359 distinct values 0 (0.0%)
soil_P_Mehlich [numeric]
Mean (sd) : 4.3 (2.5)
min ≤ med ≤ max:
0.7 ≤ 3.6 ≤ 15.7
IQR (CV) : 3.2 (0.6)
 359 distinct values 0 (0.0%)
soil_Ca_Mehlich [numeric]
Mean (sd) : 219.5 (178.8)
min ≤ med ≤ max:
7.3 ≤ 169.8 ≤ 1392.1
IQR (CV) : 223.3 (0.8)
 359 distinct values 0 (0.0%)
soil_B_Mehlich [numeric]
Mean (sd) : 0.1 (0.1)
min ≤ med ≤ max:
0 ≤ 0.1 ≤ 1
IQR (CV) : 0.2 (1.2)
 359 distinct values 0 (0.0%)
soil_Mn_Mehlich [numeric]
Mean (sd) : 43.3 (42.7)
min ≤ med ≤ max:
2.1 ≤ 20.4 ≤ 160.9
IQR (CV) : 68.8 (1)
 359 distinct values 0 (0.0%)
soil_Fe_Mehlich [numeric]
Mean (sd) : 69.3 (35.8)
min ≤ med ≤ max:
24.2 ≤ 57.1 ≤ 205.7
IQR (CV) : 44 (0.5)
 359 distinct values 0 (0.0%)
soil_S_Mehlich [numeric]
Mean (sd) : 42.7 (18.6)
min ≤ med ≤ max:
15.5 ≤ 39 ≤ 192.4
IQR (CV) : 16.5 (0.4)
 332 distinct values 0 (0.0%)
soil_Zn_Mehlich [numeric]
Mean (sd) : 0.7 (0.2)
min ≤ med ≤ max:
0.3 ≤ 0.6 ≤ 1.5
IQR (CV) : 0.3 (0.3)
 359 distinct values 0 (0.0%)
soil_Na_Mehlich [numeric]
Mean (sd) : 41.8 (68.2)
min ≤ med ≤ max:
0.1 ≤ 26 ≤ 802.7
IQR (CV) : 14.6 (1.6)
 359 distinct values 0 (0.0%)
soil_Al_Mehlich [numeric]
Mean (sd) : 189.7 (162)
min ≤ med ≤ max:
16.6 ≤ 168.5 ≤ 845.1
IQR (CV) : 247.2 (0.9)
 359 distinct values 0 (0.0%)
soil_C [numeric]
Mean (sd) : 1.3 (0.8)
min ≤ med ≤ max:
0.3 ≤ 1.2 ≤ 4.1
IQR (CV) : 0.9 (0.6)
 359 distinct values 0 (0.0%)
soil_EC [numeric]
Mean (sd) : 10.5 (4.4)
min ≤ med ≤ max:
3.3 ≤ 10 ≤ 24.8
IQR (CV) : 6.5 (0.4)
 359 distinct values 0 (0.0%)