Abstract
Background: Onion (Allium cepa L.) is one of the most essential plants in food with high nutritional value. However, application of right dose of phosphorous (P) is one of the constraints to the profitable onion yields in soils deficient in P.Methods: A systematic study to confirm the best dose of P was conducted for six years in the P deficient soil in farmers’ fields. Based on the findings obtained from 2008-09 to 2010-11, the research was undertaken to determine the effect of different phosphorus levels on the yield of onion in the Randomized Complete Block Design (RCBD) with a total of 114 replicates in 2011-12 to 2012-13. Four treatments (160, 210, 260 and 310 kg P2O5 ha-1) were tested with N and K at 100 kg ha-1.Results: From the results of this investigation, the variance analysis showed the substantial P impact. The maximum marketable bulb yield (19.03 t ha-1) was obtained from the fertilizer combination NPK @ 100-310-100 kg ha-1 and was shown to be statistically higher than all other treatments.Conclusion: Nonetheless, the nutshell of the overall economic study is that poor farmers (Land holders >12 acres) may have options to select the NPK fertilizer combination @ 100:210:100 kg ha-1 and the average farmer may have options to select the NPK fertilizer combination @ 100:260:100 kg ha-1. But rich farmers (Land holders >25 acres) who can spend more money on fertilizers and are interested in the higher gross margin should follow the combination of NPK fertilizers @ 100:310:100 kg ha-1 to profitably increase their gross margin and maintain soil fertility for onion cultivation in Punjab, Pakistan. Keywords: Onion; NPK; Plant nutrition; Phosphorus; Pungency
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Claims 4
Claim · model-written summary
NPK at 100-310-100 kg ha-1 produced the maximum marketable bulb yield of 19.03 t ha-1, above other treatments.
- Taxon
- Onion
Allium cepat0 - Treatment
- NPK @ 100-310-100 kg ha-1e0
- Outcome
- marketable bulb yielde0
- Direction
- highere0
- Value
- 19.03 t ha-1e0
- Comparator
- all other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The maximum marketable bulb yield (19.03 t ha-1) was obtained from the fertilizer combination NPK @ 100-310-100 kg ha-1 and was shown to be statistically higher than all other treatments.”
t0“Onion”
Claim · model-written summary
The authors recommend 100:210:100 kg ha-1 NPK for poor farmers.
- Taxon
- OnionAllium cepat0
- Outcome
- NPK fertilizer combination @ 100:210:100 kg ha-1e0
- Qualifier
- poor farmers (Land holders >12 acres)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“poor farmers (Land holders >12 acres) may have options to select the NPK fertilizer combination @ 100:210:100 kg ha-1”
t0“Onion”
Claim · model-written summary
The authors recommend 100:260:100 kg ha-1 NPK for average farmers.
- Taxon
- OnionAllium cepat0
- Outcome
- NPK fertilizer combination @ 100:260:100 kg ha-1e0
- Qualifier
- average farmere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the average farmer may have options to select the NPK fertilizer combination @ 100:260:100 kg ha-1”
t0“Onion”
Claim · model-written summary
The authors recommend 100:310:100 kg ha-1 NPK for rich farmers seeking higher gross margin.
- Taxon
- OnionAllium cepat0
- Outcome
- NPK fertilizers @ 100:310:100 kg ha-1e0
- Qualifier
- rich farmers (Land holders >25 acres)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rich farmers (Land holders >25 acres) who can spend more money on fertilizers and are interested in the higher gross margin should follow the combination of NPK fertilizers @ 100:310:100 kg ha-1”
t0“Onion”
The same questions in other papers
fertilization · quality: postharvest · Allium cepa (onion)Positive and negative results
52 papers in the same direction as this paper · 15 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- no effect
65 papers more in this group
See all 69 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.