Agriculture Reference
In-Depth Information
Table 17.23
Effect of applied P on crude protein (%) of berseem on the three soils.
Target P
conc. (mg/L)
Sandy clay loam
Clay loam
Sandy loam
kg P/ha
Crude protein (%)
kg P/ha
Crude protein (%)
kg P/ha
Crude protein (%)
Control
0
16.12 g
0
15.89 h
0
14.68 g
0.05
27
16.83 f
29
16.70 g
25
15.09 f
0.10
33
17.27 f
37
17.24 fg
31
15.42 ef
0.15
39
17.76 e
43
17.58 ef
43
15.74 de
0.20
47
18.25 d
49
18.13 de
47
16.08 cd
0.25
54
18.70 cd
58
18.76 bc
52
16.44 bc
0.30
61
19.21 ab
69
19.29 ab
56
16.74 ab
0.35
62
19.63 a
73
19.77 a
62
17.10 a
0.40
66
18.76 bc
96
19.06 bc
67
16.39 bc
0.50
73
18.39 cd
103
18.63 cd
71
15.90 d
Means sharing same letters are statistically ≤5% level of probability.
case of sandy clay loam soil. In the case of clay loam soil
a maximum P concentration of 0.306% was observed at
a solution level of 0.50 mg P/L, which was developed by
adding 103 kg P/ha, whereas in the case of sandy loam
soil, a maximum P concentration of 0.274% was
observed at a solution level of 0.50 mg P/L, which was
developed by adding 71 kg P/ha. It is clear from the
observations that there is a gradual increase of P
concentration from control up to the last treatment as
the soil solution P level increases and consequently P
doses also increase.
In the case of sandy loam soil, maximum crude fibre
of 17.10% was obtained at a soil solution level of
0.35 mg P/L, which was developed by adding 62 kg P/
ha; higher rates could not increase crude protein con-
tents significantly.
17.3.14 effect of applied p on crude
fibre (%)
Crude fibre is the carbohydrate component that is hard
to digest, and is made up of mostly lignin and cellulose.
Crude fibre, or roughage, is 'crude' because it underesti-
mates total fibre.
Fibre is critical for a healthy functional rumen. Fibre
in the forage will improve the animal's rumen environ-
ment by stimulating increased saliva flow. This saliva is
important as a 'rumen buffer', which maintains a proper
pH for microbial digestion of feed. Fibre therefore affects
gastro-intestinal motility and assists feed digestion and
absorption. It absorbs water in the gastro-intestinal tract
and provides bulk for normal faeces production, diar-
rhoea prevention and constipation prevention. Data
regarding the effect of applied P on crude fibre (%) of
berseem in three soils are presented in Table 17.24.
(Table 17.24). In the case of sandy clay loam soil, the
maximum crude fibre of 22.72% was obtained at a soil
solution level of 0.50 mg P/L, which was developed by
adding 73 kg P/ha. In the case of clay loam soil a
maximum crude fibre of 22.87% was obtained at a soil
solution level of 0.50 mg P/L and that solution level was
developed by adding 103 kg P/ha. In the case of sandy
loam soil, the maximum crude fibre of 22.54% was
17.3.13 Crude protein (%) in
berseem fodder
Crude protein is a key nutritional parameter that must
be provided in adequate amounts in various animal
diets. Crude protein, sometimes called total protein, is
estimated from measuring the total nitrogen content of
fodder. Data regarding effect of applied P on crude pro-
tein (%) of berseem in three soils are presented in
Table 17.23.
The data indicated that crude protein (%) contents
increased significantly with increase in P application
rates up to certain extent. The statistical analysis indi-
cated that the maximum crude fibre, i.e. 19.63%, was
obtained at a soil solution level of 0.35 mg P/L, which
was developed by adding 62 kg P/ha in the case of sandy
clay loam soil. In the case of clay loam soil, the maximum
crude fibre content of 19.77% was obtained at a solu-
tion level of 0.35 mg P/L, which was developed by
adding 73 kg P/ha.
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