FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W162184499> ?p ?o ?g. }

• W162184499 abstract "In the glasshouse cultivation of a long-season tomato crop, maximum fruit production is obtained when there is a proper balance between the demand and the supply of assimilate, and an optimum proportion of vegetative growth throughout the season in order to sustain the crop photosynthetic capacity. These aspects of crop growth are mainly affected by the fruit load, defined as the assimilate demand of all fruits together. In practice fruit load is controlled by plant density, fruit thinning and temperature. These measures for crop control can be more precise and effective if their effects are known in quantitative terms. An explanatory dynamic growth model was developed that simulates assimilate demand and dry matter distribution in an indeterminate tomato crop. Number of growing organs was evaluated through prediction of initiation, abortion and harvest of individual organs. Assimilate demand was based on potential organ growth rates (growth at nonlimiting assimilate supply). Dry matter distribution in the model was in proportion to the potential growth rates of the organs.In total 11 glasshouse experiments were conducted, six of which included temperature treatments. Truss formation rate increased with temperature (17-27°C) and declined with plant age. Truss formation rate was found to depend on the genotype, while fruit load, plant density, season and electrical conductivity of the root environment (EC: 0.3-0.9 S m -1 ) had no effect. The number of fruit that develop per truss was positively correlated with the vegetative growth of the top of the plants. The duration of the fruit growth period (time between anthesis and start of colouring) was shortened with increasing temperature, young and old fruits being the most sensitive. At the same air temperature the fruit growth period in summer was shorter than in spring. Fruits of old plants had slightly longer growth period than fruits of young plants. Potential weight of the fruits at harvest was negatively correlated with temperature, mainly due to the shorter fruit growth period. Further, the potential size increased with ontogeny, which effect was more pronounced in early than in late spring. The course of potential weight in time was described by a Gompertz growth curve exhibiting the maximum growth rate at about 40% of the fruit growth period. When during fruit development a fruit changed from limiting to nonlimiting assimilate supply, it did not immediately reach the same growth rate as fruits grown constantly at nonlimiting assimilate supply., A mechanism is proposed that explains this phenomenon. The fraction of dry matter distributed to vegetative growth declined substantially with temperature. The (apparent) potential growth rate of a vegetative unit at 24°C was estimated to be as much as 50% lower than at 19°C. The dry matter-content of fruits was negatively correlated with temperature and EC of the root environment and was higher in summer than in spring and autumn.The model was tested with data from five commercial crops. Truss formation rate, fruit growth period and dry matter distribution were predicted reasonably well. The modelling of the number of fruits per truss requires more investigation. Simulated assimilate demand of a mature tomato crop reached values of 10 and 60g CH 2 O m -2 d -1 for maintenance respiration and growth respectively. The potential growth rate (as defined by the sinks) appeared to be about twice the actual growth rate.A simulation study indicated that maximum fruit production of tomato is probably obtained at a fairly low leaf area index (2-3 m 2 m -2 ). At supra-optimum leaf area index additional leaf area for extra light interception requires more assimilate than it would produce. Computations showed that in spring and early summer the optimum plant density is determined by the required number of fruits (sink capacity) whereas in summer a combination of high plant density and fruit thinning seems required for sufficient leaf area. The results are discussed with respect to the crop sink-source system and temperature control in the glasshouse. Prospects for practical applications of the model are presented." @default.
• W162184499 created "2016-06-24" @default.
• W162184499 creator A5054424244 @default.
• W162184499 date "1994-01-01" @default.
• W162184499 modified "2023-09-29" @default.
• W162184499 title "Development and dry matter distribution in glasshouse tomato : a quantitative approach" @default.
• W162184499 cites W1503262084 @default.
• W162184499 cites W1503816665 @default.
• W162184499 cites W1509095384 @default.
• W162184499 cites W1534530903 @default.
• W162184499 cites W1545682049 @default.
• W162184499 cites W1571946493 @default.
• W162184499 cites W1590502392 @default.
• W162184499 cites W1603336416 @default.
• W162184499 cites W1606336133 @default.
• W162184499 cites W1619309656 @default.
• W162184499 cites W1691422547 @default.
• W162184499 cites W1698073036 @default.
• W162184499 cites W1714069459 @default.
• W162184499 cites W1763113958 @default.
• W162184499 cites W179285875 @default.
• W162184499 cites W181301838 @default.
• W162184499 cites W1866240564 @default.
• W162184499 cites W1948092401 @default.
• W162184499 cites W1966696354 @default.
• W162184499 cites W1969669691 @default.
• W162184499 cites W1972279536 @default.
• W162184499 cites W1974498914 @default.
• W162184499 cites W1978402834 @default.
• W162184499 cites W1979169246 @default.
• W162184499 cites W1984390165 @default.
• W162184499 cites W1984554207 @default.
• W162184499 cites W1988885217 @default.
• W162184499 cites W1995418816 @default.
• W162184499 cites W2001354198 @default.
• W162184499 cites W2003570458 @default.
• W162184499 cites W2004640026 @default.
• W162184499 cites W2006437239 @default.
• W162184499 cites W2009235150 @default.
• W162184499 cites W2010446348 @default.
• W162184499 cites W2010628288 @default.
• W162184499 cites W2011632576 @default.
• W162184499 cites W2011962 @default.
• W162184499 cites W2012010518 @default.
• W162184499 cites W201207770 @default.
• W162184499 cites W201943557 @default.
• W162184499 cites W2023677442 @default.
• W162184499 cites W202408575 @default.
• W162184499 cites W2024957639 @default.
• W162184499 cites W2025466737 @default.
• W162184499 cites W2025578197 @default.
• W162184499 cites W2030882319 @default.
• W162184499 cites W2031352402 @default.
• W162184499 cites W2033657714 @default.
• W162184499 cites W2037599685 @default.
• W162184499 cites W2041938969 @default.
• W162184499 cites W2043651540 @default.
• W162184499 cites W2045073685 @default.
• W162184499 cites W2050362154 @default.
• W162184499 cites W2051576015 @default.
• W162184499 cites W2051914553 @default.
• W162184499 cites W2056694918 @default.
• W162184499 cites W2057580729 @default.
• W162184499 cites W2059576705 @default.
• W162184499 cites W2063711042 @default.
• W162184499 cites W2064442089 @default.
• W162184499 cites W2069065074 @default.
• W162184499 cites W2070350084 @default.
• W162184499 cites W2071690079 @default.
• W162184499 cites W2072750036 @default.
• W162184499 cites W2073369651 @default.
• W162184499 cites W2076434214 @default.
• W162184499 cites W2081046091 @default.
• W162184499 cites W2081968953 @default.
• W162184499 cites W2084922598 @default.
• W162184499 cites W2085348862 @default.
• W162184499 cites W2086668091 @default.
• W162184499 cites W2086719131 @default.
• W162184499 cites W2089311555 @default.
• W162184499 cites W2091379766 @default.
• W162184499 cites W2100969924 @default.
• W162184499 cites W2105576950 @default.
• W162184499 cites W2114123573 @default.
• W162184499 cites W2116728458 @default.
• W162184499 cites W2120096627 @default.
• W162184499 cites W2120130944 @default.
• W162184499 cites W2121058103 @default.
• W162184499 cites W2127323796 @default.
• W162184499 cites W2133036382 @default.
• W162184499 cites W2138553530 @default.
• W162184499 cites W2142437120 @default.
• W162184499 cites W2147681103 @default.
• W162184499 cites W2149924730 @default.
• W162184499 cites W2152595000 @default.
• W162184499 cites W2152760462 @default.
• W162184499 cites W2152795459 @default.
• W162184499 cites W2153409714 @default.
• W162184499 cites W2157229607 @default.
• W162184499 cites W2157874924 @default.
• W162184499 cites W2159681968 @default.

• next