Abstract
Quality of strawberries in the tropics is partly limited by poor soil fertility, while profitability of different nutrient management strategies has not been established. The present study determined the effect of 0, 18, 36, and 54 t/ha farmyard manure (FYM) and triple super phosphate (TSP), equivalent to 0, 17, 34 and 68 kg/ha phosphorus (P) on quality and profitability of strawberries. The study was done in three seasons on field 3 of Tatton farm-Njoro, Kenya. The design was split-plots embedded in randomised complete blocks, replicated three times. The FYM and TSP were broadcasted to main plots and sub-plots, respectively. Each treatment had 10 plants, spaced at 0.3 m x 0.45 m in 0.6 m x 1.5 m plots, mulched with black polyfilm and irrigated with drip lines. Berry fruit size, brix index and storage life were determined from 26 to 42 weeks after planting (WAP). Profitability was calculated using berry yield-income and input-costs at the end of the study. Results varied depending on response variable. High FYM and TSP significantly (P < 0.05) increased fruit size, but lowered storage life. High FYM significantly lowered brix index. Low FYM plus moderate P significantly lowered fruit size. Thus, 54 t/ha FYM plus 34 kg/ha P and 36 t/ha FYM plus 17 kg/ha P are recommended for large-sized and sweetest, long-storing berries, respectively. Manure alone increased profitability more than TSP alone. Highest FYM and TSP did not always result in highest profitability. The relationship between treatments and profitability was sigmoid, and dependent on site and season. Thus, profitable strawberry mineral nutrition packages will have to be developed for each site and season in Kenya.
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Claims 10
Claim · model-written summary
High FYM and TSP significantly increased strawberry fruit size
- Taxon
- strawberry
_single2.jpg?width=60)
Fragaria ×ananassat0 - Treatment
- High FYM and TSPe1
- Outcome
- fruit sizee1
- Direction
- increasede1
- Setting
- Tatton farm-Njoro, Kenyae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_single2.jpg?width=500)
Verbatim
t0“Response of strawberry quality and profitability”
e0“The study was done in three seasons on field 3 of Tatton farm-Njoro, Kenya”
e1“High FYM and TSP significantly (P < 0.05) increased fruit size, but lowered storage life”
Claim · model-written summary
High FYM and TSP lowered strawberry storage life
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- High FYM and TSPe1
- Outcome
- storage lifee1
- Direction
- lowerede1
- Setting
- Tatton farm-Njoro, Kenyae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Response of strawberry quality and profitability”
e0“The study was done in three seasons on field 3 of Tatton farm-Njoro, Kenya”
e1“High FYM and TSP significantly (P < 0.05) increased fruit size, but lowered storage life”
Claim · model-written summary
High FYM significantly lowered strawberry brix index
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- High FYMe2
- Outcome
- brix indexe2
- Direction
- lowerede2
- Setting
- Tatton farm-Njoro, Kenyae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Response of strawberry quality and profitability”
e0“The study was done in three seasons on field 3 of Tatton farm-Njoro, Kenya”
e2“High FYM significantly lowered brix index”
Claim · model-written summary
Low FYM plus moderate P significantly lowered strawberry fruit size
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- Low FYM plus moderate Pe3
- Outcome
- fruit sizee3
- Direction
- lowerede3
- Setting
- Tatton farm-Njoro, Kenyae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Response of strawberry quality and profitability”
e0“The study was done in three seasons on field 3 of Tatton farm-Njoro, Kenya”
e3“Low FYM plus moderate P significantly lowered fruit size”
Claim · model-written summary
The authors recommend 54 t/ha FYM plus 34 kg/ha P for large-sized strawberries
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- 54 t/ha FYM plus 34 kg/ha Pe4
- Outcome
- large-sizede4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Response of strawberry quality and profitability”
e4“54 t/ha FYM plus 34 kg/ha P and 36 t/ha FYM plus 17 kg/ha P are recommended for large-sized and sweetest, long-storing berries, respectively”
Claim · model-written summary
The authors recommend 36 t/ha FYM plus 17 kg/ha P for sweetest, long-storing strawberries
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- 36 t/ha FYM plus 17 kg/ha Pe4
- Outcome
- sweetest, long-storing berriese4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Response of strawberry quality and profitability”
e4“54 t/ha FYM plus 34 kg/ha P and 36 t/ha FYM plus 17 kg/ha P are recommended for large-sized and sweetest, long-storing berries, respectively”
Claim · model-written summary
Manure alone increased strawberry profitability more than TSP alone
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- Manure alonee5
- Outcome
- profitabilitye5
- Direction
- increasede5
- Comparator
- TSP alonee5
- Setting
- Tatton farm-Njoro, Kenyae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Response of strawberry quality and profitability”
e0“The study was done in three seasons on field 3 of Tatton farm-Njoro, Kenya”
e5“Manure alone increased profitability more than TSP alone”
Claim · model-written summary
Highest FYM and TSP did not always give the highest strawberry profitability
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- Highest FYM and TSPe6
- Outcome
- profitabilitye6
- Direction
- did not always result in higheste6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Response of strawberry quality and profitability”
e6“Highest FYM and TSP did not always result in highest profitability”
Claim · model-written summary
The relationship between treatments and strawberry profitability was sigmoid and depended on site and season
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- treatmentse7
- Outcome
- relationship between treatments and profitabilitye7
- Qualifier
- dependent on site and seasone7
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Response of strawberry quality and profitability”
e7“The relationship between treatments and profitability was sigmoid, and dependent on site and season”
Claim · model-written summary
Profitable strawberry mineral nutrition packages must be developed for each site and season
- Taxon
- strawberryFragaria ×ananassae0
- Outcome
- profitable strawberry mineral nutrition packagese0
- Qualifier
- for each site and seasone0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“profitable strawberry mineral nutrition packages will have to be developed for each site and season in Kenya”
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See all 229 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.