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Gustafsson, Anna Karin (2008) Climate management in tomato greenhouse market gardens. Other thesis, UNSPECIFIED.

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Abstract

An efficient climate management is essential to achieve a high production in tomato greenhouse market gardens. Temperature, especially, is very important since it has a large influence on both the vegetative and the generative growth. The main objective of the present study was to evaluate the effect of low temperature pulses (LTP) on the fruit growth. The study was carried out both through a literature study and through an empirical study done in three commercial greenhouse market gardens growing tomato. During a ten week period in the spring of 2007 weekly growth, stem diameter, leaf length, length of truss peduncle, peduncle diameter, number of fruits per truss, fruit diameter and height, total number of fruit on the plants, amount of harvested fruit, and individual fruit weights were measured. Climatic data was gathered from PRIVA environmental computers, which were used in all three market gardens. Due to reluctance from the participating growers to use LTPs, and a lack of literature on the subject, the question of whether LTP has an effect on fruit growth remains unanswered. The effect of night temperature and average temperature was also included in the study. There were correlations between night temperature and the number of fruit; the R2 values were very low however, indicating that hardly any of the variation in the plant parameters can be explained by the night temperature. Lower average temperature lead to larger but fewer fruits, while a higher average temperature lead to slightly smaller first fruits, but a higher yield; this is confirmed in the literature. The harvest was closely related to the weekly average temperature where a high average temperature one week resulted in a high yield the following week.

Item Type: Thesis (Other)
Keywords: tomatoes, greenhouses, climate management, fruit development
Subject (faculty): Faculty of Veterinary Medicine and Animal Science > Dept. of Horticulture
Divisions: SLU > Faculty of Landscape Planning, Horticulture and Agricultural Science
Depositing User: Anna Karin Gustafsson
Date Deposited: 02 Apr 2008
Last Modified: 18 Aug 2015 10:00
URI: http://ex-epsilon.slu.se/id/eprint/2334

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