Responses of Leaf Photosynthesis, Plant Growth and Fruit Production to Periodic Alteration of Plant Density in Winter Produced Single-truss Tomatoes

Jiang, Chengyao; Johkan, Masahumi; Hohjo, Masaaki; Tsukagoshi, Satoru; Ebihara, Mitsuru; Nakaminami, Akio; Maruo, Toru

doi:10.2503/hortj.okd-060

Cited by 10 publications

(9 citation statements)

References 32 publications

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“…As a result, the light interception per unit area can be maximized and the yield per unit area can be increased. Jiang et al (2017) reported that the total winter yield of tomatoes per unit area was higher when movable benches were used (25-11.1 plants m −2 ) with the single-truss system (STS) compared to that without movable benches at 10 and 14.3 plants m −2 [8]. In STS tomato growing, only the first truss is harvested and the main shoot is cut above the first truss [9].…”

Section: Introductionmentioning

confidence: 99%

Light-Intercepting Characteristics and Growth of Tomatoes Cultivated in a Greenhouse Using a Movable Bench System

et al. 2022

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The objective of this study was to investigate the growth and light-intercepting characteristics of tomatoes when movable benches are used in their cultivation. We cultivated tomatoes in a greenhouse (168 m2) during summer (9 July–9 September 2018) under different furrow distances (F1.0 = 1.0 m and F1.6 = 1.6 m) and movable benches (M indicates that the furrow distance = 0.4–0.8 m). Compared to the other treatments, when the movable bench was used to the change furrow distance depending on the plant growth stage (M treatment), the percentage of canopy light interception increased to ~90% at the early stage of plant growth (~20 days after transplanting). The percentage of canopy light interception for different treatments increased in the order of M > F1.0 > F1.6, and it increased towards the end of cultivation. In addition, the yield per unit area exhibited the same trend. Therefore, the solar radiation inside a greenhouse can be efficiently intercepted by plants when movable benches are used. This indicated that it was possible to increase plant yield per unit area using movable benches in plant cultivation.

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Section: Introductionmentioning

confidence: 99%

Light-Intercepting Characteristics and Growth of Tomatoes Cultivated in a Greenhouse Using a Movable Bench System

et al. 2022

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“…Across the entire canopy, the narrower furrow distances were found to increase the light interception per cultivation area. However, tomato plants are often confronted with light insufficiency for leaf photosynthesis, plant growth, and fruit development in the lower canopy Jiang et al, 2017 . Therefore, in the future, we need to consider canopy photosynthesis when selecting furrow distance, to increase the productivity in the greenhouse.…”

Section: Resultsmentioning

confidence: 99%

“…Additionally, the plant 3D models can reflect the plant growth and plant morphology. Generally, crops are cultivated using furrows; and the leaf area and structural changes depend on the growth stage Sameshima, 1995. Jiang et al 2017 reported that the periodic alteration of the plant density for tomato using the movable bench was effective to improve the light environment of lower canopies.…”

Section: Introductionmentioning

confidence: 99%

Estimation of the light interception of a cultivated tomato crop canopy under different furrow distances in a greenhouse using the ray tracing

Ohashi

Torii

Ishigami

et al. 2020

J. Agric. Meteorol.

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We constructed 3D models of the greenhouse 168 m 2 and tomato plants plant height: 150 cm . The point cloud data of tomato plants was acquired by a 3D scanner and converted to the 3D model, which was constructed using polygons. The canopy 3D model was installed in the greenhouse 3D model. In addition, the date, time, latitude, longitude, global solar radiation, and optical properties of objects, such as plants and covering material, were used as input values to estimate the amount of solar radiation received by canopy models using the ray tracing. The amount of solar radiation received by the canopy models at different layers under different furrow distances 60 -160 cm was calculated every 1 h. The lower layer and the middle layer of tomato plants were saturated with solar radiation at furrow distances of 120 cm and 100 cm, respectively. However, the radiation received by the upper layer of tomato plants did not change across the range 60 -160 cm of investigated furrow distances. This investigation has provided a visual demonstration of the relationship between the arrangement of cultivated fruit and vegetable plants, such as tomato, in the greenhouse and the amount of solar radiation received.

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“…The higher fruit yield in higher planting density treatments occurred due to the greater interception of photosynthetically active light and, consequently, greater canopy photosynthesis, leading to a higher production of photoassimilates that were made available for the growth of the fruit (Jiang et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

“…The total soluble solids content determines fruit taste, which is an important index for commercial tomato quality analysis (Jiang et al, 2017). The higher soluble solids content with higher planting density and the increase in productivity were due to the fact that the photosynthetic activity increase in the total plant set can be a way of obtaining high productivity without negatively affecting fruit quality, since a direct relation between fruit yield and soluble solids content is obtained (Guimarães et al, 2007).…”

Section: Racemementioning

confidence: 99%

Planting density and number of stems for ecological crop determinate growth tomato

Martins¹,

Watthier²,

Schwengber³

et al. 2018

Afr. J. Agric. Res.

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Tomato growers adopting an ecologically based system have opted for determinate growth varieties due to their ease of staking and sprouting, and due to the fact that they have a shorter cycle, which reduces phytosanitary problems that usually occur towards the end of the growing season. This study aimed to evaluate yield components and fruit quality of 'Floradade' determinate growth tomato in an ecologically based production system with regard to plant density and number of stems per plant in two growing seasons, spring-summer (SS) and summer-fall (SF). Two experiments were conducted in Pelotas in the years 2010/2011 under open field conditions. Plants were trained with two or four stems and four plant densities were evaluated: 2.0; 2.5; 3.0 and 3.6 plants m-2 in SS, and 1.5; 2.0; 2.5 and 3.0 plants m-2 in SF. The fruit number, fruit average weight, fruit yield, ascorbic acid content, total soluble solids and fruit pH were evaluated. The average fruit yield obtained in SF was on average 80% lower than that in SS. The increase of plant density and number of stems per plant led to an increase in fruit number and fruit yield in the two crop seasons. There was an increase in total soluble solids and reduction in the ascorbic acid content of the fruit. Two stems per plant and plant density of 3.0 plants m-2 are recommended for the 'Floradade' tomato crop under an ecological production system and SS crop conditions.

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Responses of Leaf Photosynthesis, Plant Growth and Fruit Production to Periodic Alteration of Plant Density in Winter Produced Single-truss Tomatoes

Cited by 10 publications

References 32 publications

Light-Intercepting Characteristics and Growth of Tomatoes Cultivated in a Greenhouse Using a Movable Bench System

Light-Intercepting Characteristics and Growth of Tomatoes Cultivated in a Greenhouse Using a Movable Bench System

Estimation of the light interception of a cultivated tomato crop canopy under different furrow distances in a greenhouse using the ray tracing

Planting density and number of stems for ecological crop determinate growth tomato

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