Abstract
Sustainable agriculture focuses on reducing the excessive use of inorganic fertilizers while sustaining crop productivity and improving profitability.In Senegal, onion is an important cash crop and widely grown in the Senegal River Valley and the Niayes agroecological zones.However, its production depends on the intensive use of chemical fertilizers, which has negative effects on soil health and environment.This study assessed the effects of the single or combined application of OCASE biostimulant, made from nettle (Urtica dioica) and dandelion (Taraxacum officinale), with decreased rates of NPK on onion growth, yield, shelf-life and economic profitability under field conditions.The experiment was laid out in a randomized complete block design with four replications and six fertilization treatments: control, recommended rate of NPK fertilizer (10-10-20 -300 kg/ha), OCASE biostimulant (10 L/ha) and its combination with 75%, 50% and 25% of the recommended of NPK rate.Results showed that OCASE + 25% NPK significantly enhanced bulb weight (377.5 g), plant height (58.15 cm), and overall yield (67.89 t/ha), which were greater than the recommended rate of NPK.This treatment combination also improved postharvest storability with a decreased water loss and disease incidence compared with the NPK fertilizer alone.The highest economic gain (USD26301.28),profit (USD25891.03),and value: cost ratio (64.11) was also achieved with OCASE biostimulant + 25% NPK, demonstrating its profitability.In crux, application of OCASE biostimulant with 25% of the recommended dose of NPK could be a sustainable alternative to synthetic fertilizers for improving onion productivity, postharvest losses and environmental sustainability in Senegal.
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Claims 7
Claim · model-written summary
OCASE + 25% NPK significantly enhanced onion bulb weight relative to the recommended NPK rate under field conditions.
- Taxon
- Onion (Allium cepa)
Allium cepat1 - Organ / stage
- bulbe1
- Treatment
- OCASE + 25% NPKe1
- Outcome
- bulb weighte1
- Direction
- enhancede1
- Value
- 377.5 ge1
- Comparator
- recommended rate of NPKe1
- Setting
- field conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under field conditions”
e1“OCASE + 25% NPK significantly enhanced bulb weight (377.5 g), plant height (58.15 cm), and overall yield (67.89 t/ha), which were greater than the recommended rate of NPK”
t1“Onion (Allium cepa) in Senegal”
Claim · model-written summary
OCASE + 25% NPK significantly enhanced onion plant height relative to the recommended NPK rate under field conditions.
- Taxon
- Onion (Allium cepa)Allium cepat1
- Treatment
- OCASE + 25% NPKe1
- Outcome
- plant heighte1
- Direction
- enhancede1
- Value
- 58.15 cme1
- Comparator
- recommended rate of NPKe1
- Setting
- field conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under field conditions”
e1“OCASE + 25% NPK significantly enhanced bulb weight (377.5 g), plant height (58.15 cm), and overall yield (67.89 t/ha), which were greater than the recommended rate of NPK”
t1“Onion (Allium cepa) in Senegal”
Claim · model-written summary
OCASE + 25% NPK significantly enhanced overall onion yield relative to the recommended NPK rate under field conditions.
- Taxon
- Onion (Allium cepa)Allium cepat1
- Treatment
- OCASE + 25% NPKe1
- Outcome
- overall yielde1
- Direction
- enhancede1
- Value
- 67.89 t/hae1
- Comparator
- recommended rate of NPKe1
- Setting
- field conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under field conditions”
e1“OCASE + 25% NPK significantly enhanced bulb weight (377.5 g), plant height (58.15 cm), and overall yield (67.89 t/ha), which were greater than the recommended rate of NPK”
t1“Onion (Allium cepa) in Senegal”
Claim · model-written summary
OCASE + 25% NPK decreased onion water loss and disease incidence in storage compared with NPK fertilizer alone.
- Taxon
- Onion (Allium cepa)Allium cepat1
- Treatment
- OCASE biostimulant with 25% of the recommended dose of NPKe2
- Outcome
- water loss and disease incidencee3
- Direction
- decreasede3
- Comparator
- NPK fertilizer alonee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“application of OCASE biostimulant with 25% of the recommended dose of NPK”
e3“This treatment combination also improved postharvest storability with a decreased water loss and disease incidence compared with the NPK fertilizer alone”
t1“Onion (Allium cepa) in Senegal”
Claim · model-written summary
OCASE biostimulant + 25% NPK gave the highest economic gain in the onion trial.
- Taxon
- Onion (Allium cepa)Allium cepat1
- Treatment
- OCASE biostimulant + 25% NPKe4
- Outcome
- economic gaine4
- Direction
- higheste4
- Value
- USD26301.28e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The highest economic gain (USD26301.28),profit (USD25891.03),and value: cost ratio (64.11) was also achieved with OCASE biostimulant + 25% NPK”
t1“Onion (Allium cepa) in Senegal”
Claim · model-written summary
OCASE biostimulant + 25% NPK gave the highest profit in the onion trial.
- Taxon
- Onion (Allium cepa)Allium cepat1
- Treatment
- OCASE biostimulant + 25% NPKe4
- Outcome
- profite4
- Direction
- higheste4
- Value
- USD25891.03e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The highest economic gain (USD26301.28),profit (USD25891.03),and value: cost ratio (64.11) was also achieved with OCASE biostimulant + 25% NPK”
t1“Onion (Allium cepa) in Senegal”
Claim · model-written summary
OCASE biostimulant + 25% NPK gave the highest value: cost ratio in the onion trial.
- Taxon
- Onion (Allium cepa)Allium cepat1
- Treatment
- OCASE biostimulant + 25% NPKe4
- Outcome
- value: cost ratioe4
- Direction
- higheste4
- Value
- 64.11e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The highest economic gain (USD26301.28),profit (USD25891.03),and value: cost ratio (64.11) was also achieved with OCASE biostimulant + 25% NPK”
t1“Onion (Allium cepa) in Senegal”
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