Agriculture Reference
In-Depth Information
Table 17.24
Effect of applied P on crude ibre (%) of berseem on the three soils.
Target P
conc. (mg/L)
Sandy clay loam
Clay loam
Sandy loam
kg P/ha
Crude fibre (%)
kg P/ha
Crude fibre (%)
kg P/ha
Crude fibre (%)
Control
0
19.33 j
0
19.83 f
0
19.14 h
0.05
27
19.65 i
29
20.20 e
25
19.52 g
0.10
33
20.10 h
37
20.49 e
31
19.82 g
0.15
39
20.35 g
43
20.87 d
43
20.15 f
0.20
47
20.76 f
49
21.13 d
47
20.44 f
0.25
54
21.12 e
58
21.59 c
52
20.83 e
0.30
61
21.43 d
69
21.89 c
56
21.23 d
0.35
62
21.92 c
73
22.28 b
62
21.56 c
0.40
66
22.34 b
96
22.46 b
67
21.99 b
0.50
73
22.72 a
103
22.87 a
71
22.54 a
Means sharing same letters are statistically ≤5% level of probability.
obtained at a soil solution level of 0.50 mg P/L, which
was developed with the application of 71 kg P/ha.
Chaudhary SL, Karwasra SPS (1984) Effects of phosphorus
application on yield and quality of forage sorghum.
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Westerman RL (ed.),
Soil Testing and Plant Analysis
, 3rd edn.
Book Series No. 3. Soil Science Society of America, Madison,
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phorus combined with potash and
Rhizobium phaseoli
on the
yield of
Vigna aureus
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17.4 Conclusions
Fertilizer rates were different for different crops on the
three selected soils. Thus, fertilizer applications should
be site-specific and crop-specific to avoid overuse or
underuse. It was concluded that fertilizer recom-
mendations should be based on soil tests, keeping in
consideration the soil solution P level for differently
textured soils adjusted on the basis of the adsorption
isotherm.
references
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