Abstract
Onion (Allium cepa L.) is one of the most important vegetable crops produced in Ethiopia.Yield and productivity of the crop has been far below the regional and national standards owing to several factors; absence of location specific fertilizer recommendation being the major among others.In Ethiopia, post harvest loss of vegetables contributed up to 30% yield reduction on vegetables and fruits.Thus, a field experiment was conducted at Jimma University College of Agriculture and Veterinary Medicine Research field in dry season to study the effects of Nitrogen (N), Phosphorus (P) and Potassium (K) fertilizer on quality and storage life of irrigated onion under Jimma condition, South Western Ethiopia.The treatments consisted of factorial combinations of four levels of Nitrogen (0, 50, 100 and 150 kg N ha -1 ), three levels of Phosphorus (0, 46, and 92 kg P 2 O 5 ha -1 ) and four levels of Potassium (0, 40, 80, and 120 kg K 2 O ha -1 ) laid out in Randomized Incomplete Block Design with three replications.Data on yield, bulb quality and storage life parameters were recorded and analyzed using GenStat 12.1 version computer soft ware packages.Results of the study revealed that; N, P and K had shown a highly significant effect on quality parameters like TSS ( o Brix), DMC (%) and bulb shape index.Similarly, keeping quality of the Onion bulbs like bulb sprouts (%), weight loss (%), weeks to 50% bulb sprouts and storage rots (%) are highly influenced by application of N, P and K at different levels.The higher total bulb yield per hectare (18.78 ton) was recorded with combined application of 150:92:120 kg of N-P-K ha -1 and it is statistically the same with the results obtained in the combined applications of 150:46:120 and 150:46:80 kg of N-P-K ha -1 which were significantly superior over the rest of other treatments.Excessive Nitrogen caused higher bulb rots (%); bulb sprouts (%) and weight loss (%); while, potassium significantly decreased the bulb rots (%), bulb sprouts (%) and weight loss (%) during the two month storage time at ambient temperature.However, according to the partial budget analysis; the highest economic benefit was obtained at 150:46:80 kg of N-P-K ha - 1 where as the lowest net benefit was obtained from the control treatment.This can be recommended for use by potential onion investors or farmers with high initial capital in the study area.Nevertheless, more researches are needed in different locations and on different soils to come up on general recommendation.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 10
Claim · model-written summary
N, P and K significantly affected onion TSS, dry matter content and bulb shape index.
- Taxon
- Onion
Allium cepat0 - Treatment
- N, P and Ke0
- Outcome
- TSS ( o Brix), DMC (%) and bulb shape indexe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N, P and K had shown a highly significant effect on quality parameters like TSS ( o Brix), DMC (%) and bulb shape index.”
t0“Onion”
Claim · model-written summary
N, P and K application strongly influenced bulb sprouting, weight loss and time to 50% sprouting.
- Taxon
- OnionAllium cepae0
- Treatment
- application of N, P and K at different levelse0
- Outcome
- bulb sprouts (%), weight loss (%), weeks to 50% bulb sproutse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“keeping quality of the Onion bulbs like bulb sprouts (%), weight loss (%), weeks to 50% bulb sprouts and storage rots (%) are highly influenced by application of N, P and K at different levels.”
Claim · model-written summary
N, P and K application strongly influenced storage rots.
- Taxon
- OnionAllium cepae0
- Treatment
- application of N, P and K at different levelse0
- Outcome
- storage rots (%)e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“keeping quality of the Onion bulbs like bulb sprouts (%), weight loss (%), weeks to 50% bulb sprouts and storage rots (%) are highly influenced by application of N, P and K at different levels.”
Claim · model-written summary
The 150:92:120 N-P-K rate produced 18.78 ton per hectare of bulbs.
- Taxon
- OnionAllium cepat0
- Treatment
- 150:92:120 kg of N-P-K ha -1e0
- Outcome
- total bulb yield per hectaree0
- Direction
- highere0
- Value
- 18.78 tone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The higher total bulb yield per hectare (18.78 ton) was recorded with combined application of 150:92:120 kg of N-P-K ha -1”
t0“Onion”
Claim · model-written summary
The 150:92:120 yield was statistically equal to the 150:46:120 and 150:46:80 yields and superior to the remaining treatments.
- Taxon
- OnionAllium cepat0
- Treatment
- 150:92:120e0
- Outcome
- results obtainede0
- Direction
- statistically the samee0
- Comparator
- 150:46:120 and 150:46:80 kg of N-P-K ha -1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The higher total bulb yield per hectare (18.78 ton) was recorded with combined application of 150:92:120 kg of N-P-K ha -1 and it is statistically the same with the results obtained in the combined applications of 150:46:120 and 150:46:80 kg of N-P-K ha -1 which were significantly superior over the rest of other treatments.”
t0“Onion”
Claim · model-written summary
Excess nitrogen increased bulb rots, sprouting and weight loss.
- Taxon
- OnionAllium cepat0
- Treatment
- Excessive Nitrogene0
- Outcome
- bulb rots (%); bulb sprouts (%) and weight loss (%)e0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Excessive Nitrogen caused higher bulb rots (%); bulb sprouts (%) and weight loss (%)”
t0“Onion”
Claim · model-written summary
Potassium reduced bulb rots, sprouting and weight loss during two months of ambient storage.
- Taxon
- OnionAllium cepat0
- Treatment
- potassiume0
- Outcome
- bulb rots (%), bulb sprouts (%) and weight loss (%)e0
- Direction
- decreasede0
- Qualifier
- two month storage timee0
- Setting
- ambient temperaturee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potassium significantly decreased the bulb rots (%), bulb sprouts (%) and weight loss (%) during the two month storage time at ambient temperature.”
t0“Onion”
Claim · model-written summary
The 150:46:80 N-P-K rate gave the highest economic benefit.
- Taxon
- OnionAllium cepat0
- Treatment
- 150:46:80 kg of N-P-K ha - 1e0
- Outcome
- economic benefite0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest economic benefit was obtained at 150:46:80 kg of N-P-K ha - 1”
t0“Onion”
Claim · model-written summary
The control treatment gave the lowest net benefit.
- Taxon
- OnionAllium cepat0
- Treatment
- control treatmente0
- Outcome
- net benefite0
- Direction
- loweste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the lowest net benefit was obtained from the control treatment.”
t0“Onion”
Claim · model-written summary
The authors recommended the economically best fertilizer rate for onion growers with high initial capital.
- Taxon
- OnionAllium cepat0
- Outcome
- recommended for usee0
- Qualifier
- potential onion investors or farmers with high initial capitale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This can be recommended for use by potential onion investors or farmers with high initial capital in the study area.”
t0“Onion”
The same questions in other papers
nitrogen · quality: postharvest · Allium cepa (onion)Positive and negative results
4 papers in the same direction as this paper · 36 in the opposite direction
- positive
- positive
- positive
37 papers more in this group
See all 41 papers →potassium · quality: postharvest · Allium cepa (onion)Results agree
13 papers in the same direction as this paper
- positive
- positive
- positive
10 papers more in this group
See all 14 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.