Abstract
In this study field experiments were conducted to assess the effect of different phosphorus priming sources on seedling growth and yield of maize cv. Azam at two locations i.e. The University of Agriculture and Agricultural Research Institute, Peshawar, Khyber Phukhtunkhwa, Pakistan during 2008 and 2009. Phosphorus concentration (1% P), using potassium dihydrogen phosphate (KH2PO4), single super phosphate (SSP) and di-ammonium phosphate (DAP) along with amended solutions of SSP (20 g l -1 KOH, 15 g l -1 NaOH and 12.5 g l -1 Na2CO3) were included in the experiment. Water primed and non primed seeds were also used as controls. Seeds were primed for 16 h and were then air-dried for 30 minutes. They were sown in mini plots and in the field. Seedlings were cut at 21 days old stage and remaining field plants were harvested after maturity. Three weeks old mini plots and field seedlings grown from seeds primed with water, P or P amended solutions showed higher vigor than unprimed seeds as reflected in increased fresh and dry shoot weights, fresh shoot height and shoot P content. Additionally the nutrient uptake of seedling was increased four times due to 1 % P solution priming with KH2PO4. Yield of maize was also increased in response to P priming showing significant results in cobs yield, grain and straw yields . Phosphorus content of grain was also enhanced as compared to control. Priming maize with SSP + 20 g l -1 KOH showed almost the same effect as that of KH2PO4. From the experiment it is concluded that priming maize seeds with SSP + 20 g l -1 KOH is more effective alternate than KH2PO4 as SSP is generally used fertilizer and KOH is also easily available in market. Thu s KOH + SSP would be an easier and cheaper available source of P for the poor farmer.
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Claims 13
Claim · model-written summary
Water priming increased seedling vigor versus unprimed seed.
Not reportedTaxon
Verbatim
e0“seedlings grown from seeds primed with water, P or P amended solutions showed higher vigor than unprimed seeds”
t0“Priming maize (Zea mays) seed with phosphate solutions improves seedling growth and yield.”
Claim · model-written summary
P priming increased seedling vigor versus unprimed seed.
Not reportedTaxon
Verbatim
e0“seedlings grown from seeds primed with water, P or P amended solutions showed higher vigor than unprimed seeds”
t0“Priming maize (Zea mays) seed with phosphate solutions improves seedling growth and yield.”
Claim · model-written summary
P amended priming increased seedling vigor versus unprimed seed.
Not reportedTaxon
Verbatim
e0“seedlings grown from seeds primed with water, P or P amended solutions showed higher vigor than unprimed seeds”
t0“Priming maize (Zea mays) seed with phosphate solutions improves seedling growth and yield.”
Claim · model-written summary
Priming increased fresh and dry shoot weights and shoot height.
Not reportedTaxonTreatmentComparator
Verbatim
e0“increased fresh and dry shoot weights, fresh shoot height and shoot P content.”
t0“Priming maize (Zea mays) seed with phosphate solutions improves seedling growth and yield.”
Claim · model-written summary
Priming increased shoot P content.
Not reportedTaxonTreatmentComparator
Verbatim
e0“increased fresh and dry shoot weights, fresh shoot height and shoot P content.”
t0“Priming maize (Zea mays) seed with phosphate solutions improves seedling growth and yield.”
Claim · model-written summary
Priming with 1 % P solution of KH2PO4 quadrupled seedling nutrient uptake.
- Treatment
- 1 % P solution priming with KH2PO4e0
- Outcome
- nutrient uptake of seedlinge0
- Direction
- increasede0
- Value
- four timese0
Not reportedTaxonComparator
Verbatim
e0“the nutrient uptake of seedling was increased four times due to 1 % P solution priming with KH2PO4.”
t0“Priming maize (Zea mays) seed with phosphate solutions improves seedling growth and yield.”
Claim · model-written summary
P priming significantly increased cob yield.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield of maize was also increased in response to P priming showing significant results in cobs yield, grain and straw yields .”
Claim · model-written summary
P priming significantly increased grain yield.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield of maize was also increased in response to P priming showing significant results in cobs yield, grain and straw yields .”
Claim · model-written summary
P priming significantly increased straw yield.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield of maize was also increased in response to P priming showing significant results in cobs yield, grain and straw yields .”
Claim · model-written summary
P priming enhanced grain phosphorus content versus control.
Not reportedTaxonTreatment
Verbatim
e0“Phosphorus content of grain was also enhanced as compared to control.”
t0“Priming maize (Zea mays) seed with phosphate solutions improves seedling growth and yield.”
Claim · model-written summary
SSP plus KOH priming had almost the same effect as KH2PO4 priming.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Priming maize with SSP + 20 g l -1 KOH showed almost the same effect as that of KH2PO4.”
Claim · model-written summary
The authors recommend SSP plus KOH as a more effective alternative to KH2PO4.
- Outcome
- priming maize seeds with SSP + 20 g l -1 KOHe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“priming maize seeds with SSP + 20 g l -1 KOH is more effective alternate than KH2PO4”
Claim · model-written summary
KOH plus SSP was considered an easier and cheaper P source for poor farmers.
- Outcome
- easier and cheaper available source of Pe0
Not reportedTaxon
Verbatim
e0“KOH + SSP would be an easier and cheaper available source of P for the poor farmer.”
t0“Priming maize (Zea mays) seed with phosphate solutions improves seedling growth and yield.”
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See all 306 papers →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.