Effects of planting date and plant density on crop growth of cut chrysanthemum

Lee, J.H.; Heuvelink, E.; Challa, H.

doi:10.1080/14620316.2002.11511486

Cited by 19 publications

(30 citation statements)

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“…Thus, Lee et al. (, ) observed in chrysanthemum LUE values in summer and winter crops that were comparable with our values in the non‐ and heavily shaded treatments, respectively.…”

Section: Discussionsupporting

confidence: 92%

The Effect of Constraining the Intensity of Solar Radiation on the Photosynthesis, Growth, Yield and Product Quality of Tomato

Kläring

Krumbein

2013

J Agronomy Crop Science

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Recent studies propose the combination of electrical energy and plant production, in which often only radiation peaks were used for energy production. Then, the effect on plant growth is assumed to be negligible. However, photosynthesis is known to be a monotonically increasing function of radiation. We studied the response of tomato to constraining the intensity of solar radiation. Tomato crops in greenhouse compartments were shaded when the outside photosynthetic photon flux density (PPFD) exceeded 640 and 1280 μmol m−2 s−1, resulting in a 57 % and 34 % reduction in the PPFD integral over the growing period compared to the non‐shaded control. Constraining the intensity of solar radiation significantly reduced photosynthesis, growth and yield of tomato plants. Model‐derived estimates of reduction in crop dry matter increment were 50 % and 28 % for the strongly and moderately PPFD constrained crops. However, measured plant dry matter increment decreased only by 31 % and 19 %, respectively, that is, light use efficiency increased markedly. This indicates a strong adaptation of the plant's metabolism to cope with the limitation in light availability such as increasing the specific leaf area and reducing respiration. Surprisingly, this was only of little concern to the fruit quality, because no effect of constraining PPFD on the concentration of total dry matter, sugars and lycopene in the fruits could be observed. The concentration of titratable acids was significantly increased, however, when constraining PPFD, while ß‐carotene was slightly decreased. When combining plant and energy production, yield reductions in systems that reduce the supply of solar radiation to crops only at high irradiances will be less considerable than in systems that permanently shade the crop. However, yield losses in tomato production remain significant in both system types.

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“…Thus, Lee et al. (, ) observed in chrysanthemum LUE values in summer and winter crops that were comparable with our values in the non‐ and heavily shaded treatments, respectively.…”

Section: Discussionsupporting

confidence: 92%

The Effect of Constraining the Intensity of Solar Radiation on the Photosynthesis, Growth, Yield and Product Quality of Tomato

Kläring

Krumbein

2013

J Agronomy Crop Science

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“…Nevertheless, LUE was higher in Expt. 3, confirming that at lower light levels (Table 1), plants convert light more efficiently into biomass (Karlsson et al, 1987;Lee et al, 2002a).…”

Section: Reaction Timesupporting

confidence: 57%

“…A time course of LAI, based on linear interpolations between destructive leaf area measurements, was calculated for each treatment. Daily intercepted PAR was based on measured daily global radiation, assuming 47% PAR in global radiation, a greenhouse transmissivity of 49%, and a light extinction coefficient for a chrysanthemum crop of 0.72 (Lee et al, 2002a). LUE was defined as the slope of accumulated dry mass production during the SD (i.e., dry mass at the destructive measurements minus dry mass at the start of the SD period) and accumulated intercepted PAR over the SD period.…”

mentioning

confidence: 99%

Genotypic Variation in the Response to Suboptimal Temperature at Different Plant Densities in Cut Chrysanthemum

Ploeg¹,

Carvalho²,

Heuvelink³

2009

J. Amer. Soc. Hort. Sci.

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Energy efficiency of greenhouse cut chrysanthemum (Chrysanthemum morifolium Ramat.) may be increased by breeding. In addition to breeding for cultivars with a shorter reaction time at suboptimal temperatures, an alternative approach would be to develop cultivars that are heavier at suboptimal temperatures so that they could be grown at a higher plant density, enhancing the production per unit area. Therefore, the combined effect of temperature and plant density on growth and development of four cut chrysanthemum cultivars was investigated in three greenhouse experiments, carried out in different seasons. For growth-related traits, no interactions between temperature and cultivar were found, limiting the possibilities for breeding. At suboptimal temperatures, growth rate early in the cultivation period decreased as a consequence of a lower light interception resulting from a lower specific leaf area. Thus a higher dry mass production at lower temperature could only be explained by a longer cultivation time. Temperature also influenced external quality, but these effects were cultivar dependent. For instance, temperature affected the slope of the positive linear relationship between total dry mass and number of flowers, reducing number of flowers at low temperature for the same plant dry mass. It is concluded that there are possibilities for breeding for suboptimal temperature-tolerant cultivars.

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“…For instance, in sweet pepper the leaf area index can reach values of 7 or 8 (Dueck et al, 2005). Also, for crops like chrysanthemum (LAI up to.7;Lee et al, 2002), cut-rose (LAI 4-6; Kool and Lenssen, 1997), gerbera (LAI 4-7;De Visser et al, 2014) and strawberry (LAI 3-11; Mochizuki et al, 2013) large leaf area indices have been reported. Besides the already mentioned positive effects of high leaf area index on gross canopy photosynthesis, there might also be downsides of a high leaf area index.…”

Section: Optimal Leaf Area Formationmentioning

confidence: 99%

Sustainable crop production in greenhouses based on understanding crop physiology

Marcelis¹,

Kaiser²,

Westreenen³

et al. 2018

Acta Hortic.

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Effects of planting date and plant density on crop growth of cut chrysanthemum

Cited by 19 publications

References 0 publications

The Effect of Constraining the Intensity of Solar Radiation on the Photosynthesis, Growth, Yield and Product Quality of Tomato

The Effect of Constraining the Intensity of Solar Radiation on the Photosynthesis, Growth, Yield and Product Quality of Tomato

Genotypic Variation in the Response to Suboptimal Temperature at Different Plant Densities in Cut Chrysanthemum

Sustainable crop production in greenhouses based on understanding crop physiology

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