TABLE S2. Details of datasets A, B, and C with references to the sources of data
Dataset A
Species
Brussel
sprouts*
"
Broad beans
"
Pea
"
Cauliflower
"
Winter
cabbage*
"
Summer
cabbage
French bean
Leek
Carrot
Radish
"
Parsnip
"
Swede
"
Red beet
"
Turnip
"
Onions
Average
Yr of
expt
Country
71
UK
Number of
measurements
Total with W<2 Mg
ha-1
12
2
Period (days)
of
measurement
225
Plant weight (Mg
ha-1)
Smallest Largest
Average
N/P ratio
K2
0.12
16.31
9.95
Mg ha
d-1
0.127
r2
Reference
0.951
Greenwood et al.,
1977&1980
"
"
"
"
"
"
"
"
-1
73
70
72
71
72
71
72
70
"
"
"
"
"
"
"
"
9
9
14
8
14
5
10
8
3
5
8
6
5
3
4
4
161
70
102
60
90
77
121
111
0.11
0.13
0.13
0.12
0.044
0.01
0.004
0.096
7.5
5.4
12.07
3.86
14.3
3.93
5.92
5.02
8.52
9.09
8.94
6.34
8.82
10.37
9.19
8.3
0.074
0.153
0.192
0.155
0.272
0.162
0.156
0.1
0.895
0.96
0.971
0.99
0.933
0.986
0.966
0.988
72
70
"
"
10
8
3
4
118
83
0.16
0.0125
6.93
7.48
9.1
9.05
0.1
0.265
0.97
0.993
73
71
70
71
72
73
72
71
72
72
70
72
71
91
"
"
"
"
"
"
"
"
"
"
"
"
"
Spain
17
11
11
6
7
12
12
11
19
13
13
18
12
18
8
8
4
5
5
3
6
5
8
5
4
6
5
5
84
193
127
44
43
177
176
140
154
129
133
113
101
71
0.027
0.21
0.306
0.216
0.068
0.074
0.016
0.068
0.036
0.058
0.062
0.074
0.045
0.28
4.97
14.6
13.01
5.05
4.54
13.68
10.94
11.84
10.92
12.46
11.08
12.58
13.91
15.7
10.33
6.43
5.26
8.56
8.37
5.51
7.06
6.58
7.23
6.72
6.38
7.33
6.8
8.17
7.936
0.136
0.131
0.188
0.24
0.305
0.25
0.173
0.152
0.159
0.177
0.2
0.229
0.263
0.253
0.184
0.951
0.956
0.936
0.965
0.98
0.961
0.983
0.894
0.983
0.917
0.967
0.979
0.925
0.969
0.959
"
"
"
"
"
"
"
"
"
"
"
"
"
"
"
Bosh-Serra 1999
Measurements are for entire plant excluding fibrous roots but do not include those made after the onset of senescence
*transplanted - all other crops drilled
Dataset B: Validation experiments with similar type of measurements to those in dataset A
Crop
yr of
expt
Cou
ntry
58
US
A
85
80
No of Measurements
Total
with
W <2 (Mg
ha-1 )
Duration of
expts in days or
mm of pan vap
Lowest W
(Mg ha-1)
Largest W
(Mg ha-1)
Average
%N/%P
K2
(Mg ha-1 d-1)
r2
Reference
Comment
7
1
1000‡
0.81
18.3
7.64
0.0198‡
0.996
Karlen et al., 1987
Interploated from graphs
7
7
1
2
1000‡
70
1.72
0.8
26.9
21.5
8.36
6.22
0.0287‡
0.343
0.987
0.978
6
7
2
0
86
120
0.19
2
23.7
24.7
8.3
5.2
0.347
0.255
0.983
0.968
7
2
1
0
84
-
1.13
-
10.2
11.2
7.83
7.31
0.131
-
0.99
9
1
112
0.47
16.39
7.73
0.187
0.927
5
1
28
1.92
6.17
8.59
0.193
0.955
5
1
8.52
0.27
0.996
9
1
98
0.95
18.61
4.61
0.27
0.99
5
2
203
0.1
12.5
5.25
0.095
0.893
11.2
16.04
7.31
7.14
0.232
0.969
Maize
81
91
Onions
Perman
ent
Sugar
beet
61
90 &
91
73
30
Fran
ce
Net
herl
ands
Can
ada
Can
ada
UK
75
UK
91
Timoth
y
Fran
ce
92
Wheat
99-01 Italy 2
0
Sum
78
13
Average
‡ measured as mm of pan evap instead of days
-
Dataset C: Optimal values of %N and %P during growth
Karlen &Camp
1982
Plenet et al., 1992a
&b
Zink 1966
Duru & Ducrocq
1997
Houba 1973
Derived by interploation
of 2 data sets
Interploated from graphs
Belanger &
Richards1995
Belanger &
Richards1999
Knowles & Watkin
1931; Russell 1973
Gregory et al.,
1978; 1979
Masoni et al., 2007
Average 4 cultivars
Includes fallen leaves
Average 4 cultivars
Species
Plant part
Barley
Above ground parts
Barley
"
Oat
"
Rye
"
Wheat
"
Many different Leaves and whole
species
plants
No of values
Data type
Reference
Review
Tcerling,
1978
4
"
4
4
4
124
"
"
"
"
Bergman,
1992 p343
to 362
Comment
Each value for each growth stage
estimated from nationwide Russian
experiments
"
"
"
"
Estimates are averages for each crop
derived from expts in various countries
References for TABLE S1, datasets A, B, C
Belanger G, Richard JE. 1995. Growth analysis of timothy cultivars differing in maturity. Canadian Journal of Plant Science 75:
643-648.
Belanger G, Richard JE. 1999. Relationships between P and N concentrations in timothy. Canadian Journal of Plant Science 79:
65-70.
Bergman W. 1992. Nutritional disorders of plants. Development and, visual and analytical diagnosis. Jena Germany: Gustav
Fischer.
Bosch Serra A. 1999 Ecophysiological basis for onion production (Allium cepa, L): A contribution to the improvement of
agricultural practices in the Pla d’Urgell (Lleida). Doctoral Thesis. University of Lleida, Spain (in Spanish).
Bases ecofisiológicas de la producción de cebolla (Allium cepa, L): Aportaciones para la mejora de las técnicas de cultivo en el Pla
d’Urgell(Lleida).
Duru M, Ducrocq H. 1997. A nitrogen and phosphorus herbage index as a tool for assessing the effect of N and P supply on the
dry matter yield of permanent pastures. Nutrient Cycling in Agroecosystems 47: 59-69.
Greenwood DJ, Barnes A, Liu K, Hunt J, Cleaver TJ. Loquens SMH. 1980. Relationships between the critical concentrations of
nitrogen, phosphorus and potassium in 17 different vegetable crops and duration of growth. Journal of the Science of Food and
Agriculture 31: 1343-53.
Greenwood DJ, Cleaver TJ, Loquens, SHM, Niendorf KB. 1977. Relationship between plant weight and growing period for
vegetable crops in the United Kingdom. Annals of Botany 41: 987-997.
Gregory PJ, McGowan M, Biscoe PV, Hunter B. 1978. Water relations of winter wheat. 1. Growth of root system. Journal of
Agricultural Science 91: 91-102.
Gregory PJ, Crawford DV, McGowan M. 1979. Nutrient relations of winter wheat. 1. Accumulation and distribution of Na, K, Ca,
Mg, P, S and N. Journal of Agricultural Science, Cambridge 93: 485-494.
Houba VJG. 1973. Effect of nitrogen dressings on growth and development of sugar beet. Agricultural Research Reports 791.
Wageningen, The Netherlands: Pudoc Centre for agricultural publishing and documentation.
Karlen DL, Camp CR. 1982. N,P and K accumulation in high yielding irrigated maize grown on typic paleudult in the
southeastern U.S. In: Scaife A, ed. Proceedings of the ninth international plant nutrition colloquium, University of Warwick,
Volume 1. Slough, UK: Commonwealth Agricultural Bureau, 262-267.
Karlen, DL, Flannery RL, Sadler EJ. 1987. Nutrient and dry matter accumulation rates for high yielding maize. Journal of Plant
Nutrition 10: 1409-1417.
Knowles F, Watkin JE. 1931. The assimilation and translocation of plant nutrients in wheat during growth. Journal of
Agricultural Science, Cambridge 21: 612-637.
Masoni A, Ercoli L, Mariotti,M, Arduini I. 2007. Post-anthesis accumulation and remobilization of dry matter, nitrogen and
phosphorus in durum wheat as affected by soil type. European Journal of Agronomy 26: 179-186.
Plenet D, Lubert E, Esvan JM 1992. Effects of N level on dry matter and nitrogen accumulation for high yielding maize. In: Scaife
A, ed. Proceedings of the second congress of the European Society of Agronomy (ed Scaife, A.) ESA UK Congress Office, Warwick
UK p. 294-295.
Plenet D, Lubert E, Esvan JM, Soyer JP. 1992. Effects of long term phosphorus applications on continuous maize cropping and
soil P status. In: Proceedings of the second congress of the European Society of Agronomy (ed Scaife, A.) ESA UK Congress
Office, Warwick, UK p. 296-297.
Russell EW. 1973. Soil conditions and plant growth. (p.30) 10th edn. London, UK: Longman.
Tcierling VV. 1978. Agrochemical fundamentals of diagnostics of crop mineral nutrition Moscow, Russia: Nauka. (in Russian).
Церлинг В.В. Агрохимические основы диагностики минерального питания сельскохозяйственных культур. М.: Наука, 1978.
216 с.
Zinc FW. 1966. Studies on the growth rate and nutrient absorption of onion. Hilgardia 37: 203-212.