Abstract
To find out the effect of low grade Udaipur rock phosphate on yield and nutrient dynamic in groundnut- maize cropping system, a field experiment was conducted in a randomized block design with three replications and eight treatments consisting of Udaipur rock phosphate (URP), single super phosphate (SSP) alone or in combinations with different ratios including phosphorus control from 2013-14 to 2015. The soil has a loam texture, a pH of 5.18, low available nitrogen and medium phosphorus and potassium. The highest maize equivalent yield of 6293 kg ha-1 and relative agronomic efficiency (RAE) of 159% was recorded in SSP+ lime (0.2LR) treatment followed by URP+SSP (1:1). Combined application of SSP+ lime recorded higher P, Ca, Mg and S uptake by groundnut-maize cropping system. When the crops received URP+SSP mixture in 1:1 ratio, the RAE values were increased above the standard SSP treatment (T3) being 102% for groundnut, 105% for maize and 103% for groundnut-maize cropping system. The yield in URP+SSP mixture (1:1) was higher than for the SSP treatment, but the difference was not statistically significant (P > 0.05). Thus, combined application of URP+SSP mixture (1:1) can safely be recommended in acid soils for short duration crops like maize and groundnut as against the more costly water soluble SSP fertilizer.
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Claims 8
Claim · model-written summary
SSP plus lime produced the highest maize equivalent yield, 6293 kg ha-1.
Verbatim
e0“The highest maize equivalent yield of 6293 kg ha-1 and relative agronomic efficiency (RAE) of 159% was recorded in SSP+ lime (0.2LR) treatment followed by URP+SSP (1:1).”
t0“Groundnut-Maize”
Claim · model-written summary
SSP plus lime produced the highest RAE, 159%.
Verbatim
e0“The highest maize equivalent yield of 6293 kg ha-1 and relative agronomic efficiency (RAE) of 159% was recorded in SSP+ lime (0.2LR) treatment followed by URP+SSP (1:1).”
t0“Groundnut-Maize”
Claim · model-written summary
SSP plus lime increased P, Ca, Mg and S uptake.
Not reportedComparator
Verbatim
e0“Combined application of SSP+ lime recorded higher P, Ca, Mg and S uptake by groundnut-maize cropping system.”
Claim · model-written summary
The 1:1 URP+SSP mixture gave groundnut RAE of 102% relative to SSP.
- Taxon
- groundnut
Arachis hypogaeae0 - Treatment
- URP+SSP mixture in 1:1 ratioe0
- Outcome
- RAE valuese0
- Direction
- increasede0
- Value
- 102%e0
- Comparator
- standard SSP treatment (T3)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When the crops received URP+SSP mixture in 1:1 ratio, the RAE values were increased above the standard SSP treatment (T3) being 102% for groundnut, 105% for maize and 103% for groundnut-maize cropping system.”
Claim · model-written summary
The 1:1 URP+SSP mixture gave maize RAE of 105% relative to SSP.
- Treatment
- URP+SSP mixture in 1:1 ratioe0
- Outcome
- RAE valuese0
- Direction
- increasede0
- Value
- 105%e0
- Comparator
- standard SSP treatment (T3)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When the crops received URP+SSP mixture in 1:1 ratio, the RAE values were increased above the standard SSP treatment (T3) being 102% for groundnut, 105% for maize and 103% for groundnut-maize cropping system.”
Claim · model-written summary
The 1:1 URP+SSP mixture gave system RAE of 103% relative to SSP.
Verbatim
e0“When the crops received URP+SSP mixture in 1:1 ratio, the RAE values were increased above the standard SSP treatment (T3) being 102% for groundnut, 105% for maize and 103% for groundnut-maize cropping system.”
Claim · model-written summary
The 1:1 mixture yielded more than SSP, without a statistically significant difference.
Verbatim
e0“The yield in URP+SSP mixture (1:1) was higher than for the SSP treatment, but the difference was not statistically significant (P > 0.05).”
t0“Groundnut-Maize”
Claim · model-written summary
The authors recommend a 1:1 URP+SSP mixture for short duration maize and groundnut on acid soils.
- Taxon
- maize and groundnutArachis hypogaea
Zea mayse0 - Outcome
- combined application of URP+SSP mixture (1:1) can safely be recommendede0
- Comparator
- water soluble SSP fertilizere0
- Setting
- acid soilse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“combined application of URP+SSP mixture (1:1) can safely be recommended in acid soils for short duration crops like maize and groundnut as against the more costly water soluble SSP fertilizer”
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phosphorus · nutrient: efficiency · Zea mays (maize)Positive and negative results
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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.