Abstract
A field experiment was carried out in two successive seasons at El- Ismailia Agric. Res. Station, ARC, in El - Ismailia Governorate, Egypt, to study the efficiency use of two different sources of P fertilizer i.e. superphosphate (SP) versus rock phosphate (RP),both of them were used with three levels (0, 22 and 30 Kg P2O5 fed-1), combined with two rates(20 & 30 L fed-1) of humic acid as K-humate sprayed over the surface soil layer, some chemical soil properties (soil pH, electrical conductivity (EC) ,OM and available N, P and K) were determined after corn and sesame harvesting. Yield components of both corn and sesame were, also, evaluation along with N, P, and K uptake by corn and sesame (straw, grains and /or seeds). Data revealed that the use of superphosphate (SP) and rock phosphate (RP) combined with humic acid increased slightly pH, EC and OM values in soil after corn and sesame harvesting. Also, EC in soil at both tested seasons, generally, had increased in presence of RP as compared to SP. Moreover, available N, P and K increased in soil along with the application of P- sources (SP & RP) combined with high rate of HA (30 L fed-1). Also, the application of super phosphate (SP) combined with humic acid (30 L fed-1) was superior as compared to rock phosphate (RP) at both tested soils after corn and sesame harvesting. Obtained data show that the use of 30kg P2O5 from either superphosphate or rock phosphate combined with humic acid (30L fed-1) was superior for increasing the yield components and biological yield of both corn and sesame yields as compared to both control and the other tested treatments. In addition, the application of SP combined with humic acid had a significant positive effect on both corn and sesame yield components(straw, grains and /or seeds and biological yield) as compared to RP treatments. On the other hand , N, P and K uptake in straw, grains and /or seeds of both corn and sesame plants exhibited a positive significant trend along with the use of both P- sources as compared to the control treatment. Superphosphate increased significantly the uptake of N,P and K in straw and grains and/or seeds for both corn and sesame plants as compared to either rock phosphate or control treatment. Moreover, the calculated values of P-use efficiency by corn and sesame plants indicated that the presence of high rate of humic acid had enhanced the P-use efficiency of both tested crops, similar results was observed in both P-sources especially for superphosphate. The highest P- use efficiency was obtained with the use of high level from P (30 kg P2O5) combined with high rate of humic acid (30L fed-1). P use efficiency increased by increasing the rate of humic acid at both tested P - sources.
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Claims 10
Claim · model-written summary
Superphosphate and rock phosphate combined with humic acid slightly increased soil pH, EC and OM after corn and sesame harvesting.
- Taxon
- corn and sesame
Sesamum indicum
Zea mays subsp. mayse0 - Treatment
- superphosphate (SP) and rock phosphate (RP) combined with humic acide0
- Outcome
- pH, EC and OM values in soile0
- Direction
- increased slightlye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the use of superphosphate (SP) and rock phosphate (RP) combined with humic acid increased slightly pH, EC and OM values in soil after corn and sesame harvesting”
Claim · model-written summary
Soil EC increased in both seasons in the presence of rock phosphate compared with superphosphate.
Not reportedTaxon
Verbatim
e1“EC in soil at both tested seasons, generally, had increased in presence of RP as compared to SP”
Claim · model-written summary
Available N, P and K in soil increased with application of P sources (SP and RP) combined with the high rate of humic acid (30 L fed-1).
- Treatment
- application of P- sources (SP & RP) combined with high rate of HA (30 L fed-1)e2
- Outcome
- available N, P and Ke2
- Direction
- increasede2
Not reportedTaxonComparator
Verbatim
e2“available N, P and K increased in soil along with the application of P- sources (SP & RP) combined with high rate of HA (30 L fed-1)”
Claim · model-written summary
Super phosphate combined with humic acid (30 L fed-1) was superior to rock phosphate at both tested soils after corn and sesame harvesting.
- Taxon
- corn and sesameSesamum indicumZea mays subsp. mayse3
- Treatment
- super phosphate (SP) combined with humic acid (30 L fed-1)e3
- Outcome
- superiore3
- Direction
- superiore3
- Comparator
- rock phosphate (RP)e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“the application of super phosphate (SP) combined with humic acid (30 L fed-1) was superior as compared to rock phosphate (RP) at both tested soils after corn and sesame harvesting”
Claim · model-written summary
30 kg P2O5 from either superphosphate or rock phosphate combined with humic acid (30 L fed-1) was superior for increasing yield components and biological yield of corn and sesame compared with control and the other treatments.
- Taxon
- corn and sesameSesamum indicumZea mays subsp. mayse4
- Treatment
- 30kg P2O5 from either superphosphate or rock phosphate combined with humic acid (30L fed-1)e4
- Outcome
- yield components and biological yielde4
- Direction
- increasinge4
- Comparator
- control and the other tested treatmentse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“30kg P2O5 from either superphosphate or rock phosphate combined with humic acid (30L fed-1) was superior for increasing the yield components and biological yield of both corn and sesame yields as compared to both control and the other tested treatments”
Claim · model-written summary
Superphosphate combined with humic acid had a significant positive effect on corn and sesame yield components compared with rock phosphate treatments.
- Taxon
- corn and sesameSesamum indicumZea mays subsp. mayse5
- Treatment
- SP combined with humic acide5
- Outcome
- yield componentse5
- Direction
- positivee5
- Comparator
- RP treatmentse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“SP combined with humic acid had a significant positive effect on both corn and sesame yield components(straw, grains and /or seeds and biological yield) as compared to RP treatments”
Claim · model-written summary
N, P and K uptake in straw, grains and seeds of corn and sesame showed a positive significant trend with both P sources compared with the control.
- Taxon
- corn and sesameSesamum indicumZea mays subsp. mayse6
- Treatment
- both P- sourcese6
- Outcome
- N, P and K uptakee6
- Direction
- positivee6
- Comparator
- control treatmente6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“N, P and K uptake in straw, grains and /or seeds of both corn and sesame plants exhibited a positive significant trend along with the use of both P- sources as compared to the control treatment”
Claim · model-written summary
Superphosphate significantly increased N, P and K uptake in straw, grains and seeds of corn and sesame compared with rock phosphate or control.
- Taxon
- corn and sesameSesamum indicumZea mays subsp. mayse7
- Treatment
- Superphosphatee7
- Outcome
- uptake of N,P and Ke7
- Direction
- increasede7
- Comparator
- rock phosphate or control treatmente7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“Superphosphate increased significantly the uptake of N,P and K in straw and grains and/or seeds for both corn and sesame plants as compared to either rock phosphate or control treatment”
Claim · model-written summary
A high rate of humic acid enhanced the P-use efficiency of corn and sesame, especially with superphosphate.
- Taxon
- corn and sesameSesamum indicumZea mays subsp. mayse0
- Treatment
- high rate of humic acide0
- Outcome
- P-use efficiencye0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the calculated values of P-use efficiency by corn and sesame plants indicated that the presence of high rate of humic acid had enhanced the P-use efficiency of both tested crops”
Claim · model-written summary
The highest P-use efficiency was obtained with 30 kg P2O5 combined with the high rate of humic acid (30 L fed-1).
- Treatment
- high level from P (30 kg P2O5) combined with high rate of humic acid (30L fed-1)e0
- Outcome
- P- use efficiencye0
- Direction
- higheste0
Not reportedTaxonComparator
Verbatim
e0“The highest P- use efficiency was obtained with the use of high level from P (30 kg P2O5) combined with high rate of humic acid (30L fed-1)”
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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.