Abstract
Sorghum is an important fodder for animals in Pakistan. Phosphorus is a quality nutrient for fodders. The use of P for sorghum is negligible. Thus a field study was conducted to evaluate the effect of model based P fertilization to improve yield and quality of sorghum fod der on Torripsamment soil (Loamy sand, calcareous). Adsorption isotherm was constructed by equilibrating 2.5 g soil with 25 ml of 0.01 M CaCl 2 solution containing 0, 20, 40, 60, 80, 100, 200,300,400 and 500 µg P mL -1 as KH2PO 4and shaking for 24 hour at 20 0 C. P fertilizer doses were computed by using empirically derived Freundlich equation to adjust soil solution P levels of 0.05, 0.1, 0.15, 0.20, 0.25, 0.30, 0.35, 0.40, an d 0.50 mg P L -1 . It was observed that different P fertilizer doses were required to adjust different soil solution P levels. Adsorption of P increased with P application rate but marginal adsorption decreased significantly. Yield and quality of sorghum fodder were improved with P application. Yield increased upto T 6where P was applied @ 25 kg ha -1 but quality traits (P concentration, dry matter, crude protein, crude fiber and ash contents (%) improved with the highest rate of P use i.e. 43 kg ha -1 . P application showed non -significant affect on NDF and ADF contents (%). External and inter nal P requirements of sorghum fodder to obtain 95 % relative yield were 0.22 mg L -1 and 0.20 % respectively.
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Claims 10
Claim · model-written summary
Different phosphorus doses were required for different soil-solution P levels.
SorghumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“different P fertilizer doses were required to adjust different soil solution P levels”
t0“sorghum”
Claim · model-written summary
Soil phosphorus adsorption increased with application rate.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Adsorption of P increased with P application rate”
t0“sorghum”
Claim · model-written summary
Marginal phosphorus adsorption decreased significantly as P application rose.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“marginal adsorption decreased significantly”
t0“sorghum”
e1“P application rate”
Claim · model-written summary
Phosphorus application improved sorghum fodder yield.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield and quality of sorghum fodder were improved with P application”
Claim · model-written summary
Phosphorus application improved sorghum fodder quality.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield and quality of sorghum fodder were improved with P application”
Claim · model-written summary
Yield rose through T 6 at 25 kg ha -1 P.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield increased upto T 6where P was applied @ 25 kg ha -1”
t0“sorghum”
Claim · model-written summary
P concentration, dry matter, crude protein, crude fiber and ash improved at the highest P rate, 43 kg ha -1.
- Treatment
- 43 kg ha -1e0
- Outcome
- P concentration, dry matter, crude protein, crude fiber and ash contentse0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“quality traits (P concentration, dry matter, crude protein, crude fiber and ash contents (%) improved with the highest rate of P use i.e. 43 kg ha -1”
t0“sorghum”
Claim · model-written summary
P application did not significantly affect NDF and ADF contents.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P application showed non -significant affect on NDF and ADF contents (%)”
t0“sorghum”
Claim · model-written summary
External P requirement for 95 % relative yield was 0.22 mg L -1.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“External and inter nal P requirements of sorghum fodder to obtain 95 % relative yield were 0.22 mg L -1 and 0.20 % respectively”
Claim · model-written summary
Internal P requirement for 95 % relative yield was 0.20 %.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“External and inter nal P requirements of sorghum fodder to obtain 95 % relative yield were 0.22 mg L -1 and 0.20 % respectively”
The same questions in other papers
phosphorus · yield · SorghumResults differ
91 papers in the same direction as this paper · 12 in the opposite direction · 1 reporting no difference from an alternative
- negative
- no effect
- no effect
101 papers more in this group
See all 105 papers →phosphorus · quality: grain · SorghumPositive and negative results
3 in the opposite direction
- positive
- positive
- positive
phosphorus · quality: general · SorghumResults agree
2 papers in the same direction as this paper
- positive
- positive
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.