Abstract
ABSTRACT In South Africa there are no established spacing recommendations for determinate tomato cultivar production under closed hydroponic systems. This study was conducted to determine yield and quality of hydroponically grown determinate tomato cultivars at different plant densities. Four determinate tomato cultivars (Dynimo, Mariana, Mion and Sama) were subjected to four plant densities (10, 16, 20 and 25 plants/m2) during the spring/summer and summer/fall seasons. Experimental layout was a randomized complete block design in a factorial scheme of four plant spacing x four cultivars with three replicates. There were no significant differences in marketable yield between the cultivars tested during the spring/summer and summer/fall seasons. Cultivar Mion showed higher incidence of blossom end rot, while Mariana showed the highest fruit rot during the spring/summer season as compared to the other cultivars. During the spring/summer season, marketable yield increased with increased plant density with the highest yield obtained at 25 plants/m2 followed by 20 plants/m2. During the summer/fall season, plant density did not show a significant effect on total and marketable yield although a tendency for declined yield with increased density was observed. Number of fruit per plant as well as fruit size decreased with increased plant density during both seasons which did not have an effect on overall yield per plot area. Increasing the plant density to 25 plants/m2 can improve marketable yield of determinate tomato cultivars during spring/summer season while using a plant density of 10 plants/m2 will be more cost effective during the summer/fall season. This information will enable farmers to optimise yield and quality of determinate tomato cultivars under closed hydroponic systems.
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Claims 12
Claim · model-written summary
Marketable yield did not differ significantly among cultivars in either season.
- Taxon
- tomato
Solanum lycopersicumt0 - Outcome
- marketable yielde0
- Direction
- no significant differencese0
- Comparator
- the cultivars testede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were no significant differences in marketable yield between the cultivars tested during the spring/summer and summer/fall seasons”
t0“tomato”
Claim · model-written summary
Mion had higher blossom end rot incidence than other cultivars.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- Mione0
- Outcome
- incidence of blossom end rote0
- Direction
- highere0
- Comparator
- the other cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cultivar Mion showed higher incidence of blossom end rot, while Mariana showed the highest fruit rot during the spring/summer season as compared to the other cultivars”
t0“tomato”
Claim · model-written summary
Mariana had the highest spring/summer fruit rot among cultivars.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- Marianae0
- Outcome
- fruit rote0
- Direction
- higheste0
- Comparator
- the other cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cultivar Mion showed higher incidence of blossom end rot, while Mariana showed the highest fruit rot during the spring/summer season as compared to the other cultivars”
t0“tomato”
Claim · model-written summary
Marketable yield increased with plant density in spring/summer, peaking at 25 plants/m2.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- increased plant densitye0
- Outcome
- marketable yielde0
- Direction
- increasede0
- Value
- 25 plants/m2e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During the spring/summer season, marketable yield increased with increased plant density with the highest yield obtained at 25 plants/m2 followed by 20 plants/m2”
t0“tomato”
Claim · model-written summary
Plant density had no significant effect on total yield in summer/fall.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- plant densitye0
- Outcome
- totale0
- Direction
- did not show a significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During the summer/fall season, plant density did not show a significant effect on total and marketable yield although a tendency for declined yield with increased density was observed”
t0“tomato”
Claim · model-written summary
Plant density had no significant effect on marketable yield in summer/fall.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- plant densitye0
- Outcome
- marketable yielde0
- Direction
- did not show a significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During the summer/fall season, plant density did not show a significant effect on total and marketable yield although a tendency for declined yield with increased density was observed”
t0“tomato”
Claim · model-written summary
Summer/fall yield tended to decline with greater density.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- increased densitye0
- Outcome
- yielde0
- Direction
- declinede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a tendency for declined yield with increased density was observed”
t0“tomato”
Claim · model-written summary
Fruit number per plant decreased as density rose in both seasons.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- increased plant densitye0
- Outcome
- Number of fruit per plante0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Number of fruit per plant as well as fruit size decreased with increased plant density during both seasons”
t0“tomato”
Claim · model-written summary
Fruit size decreased as density rose in both seasons.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- increased plant densitye0
- Outcome
- fruit sizee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Number of fruit per plant as well as fruit size decreased with increased plant density during both seasons”
t0“tomato”
Claim · model-written summary
Fruit number and size changes did not affect overall yield per plot area.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- overall yield per plot areae0
- Direction
- did not have an effecte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“which did not have an effect on overall yield per plot area”
t0“tomato”
Claim · model-written summary
The authors recommend 25 plants/m2 for spring/summer marketable yield.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- 25 plants/m2e0
- Outcome
- improve marketable yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing the plant density to 25 plants/m2 can improve marketable yield of determinate tomato cultivars during spring/summer season”
t0“tomato”
Claim · model-written summary
The authors consider 10 plants/m2 more cost effective in summer/fall.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- 10 plants/m2e0
- Outcome
- more cost effectivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“using a plant density of 10 plants/m2 will be more cost effective during the summer/fall season”
t0“tomato”
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