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A quantified approach to tomato plan...

Renda da Costa, Paula Maria R.

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A quantified approach to tomato plant growth status for greenhouse production in a semi arid climate.

Record Type:	Electronic resources : Monograph/item
Title/Author:	A quantified approach to tomato plant growth status for greenhouse production in a semi arid climate./
Author:	Renda da Costa, Paula Maria R.
Description:	231 p.
Notes:	Source: Dissertation Abstracts International, Volume: 68-06, Section: B, page: 3470.
Contained By:	Dissertation Abstracts International68-06B.
Subject:	Horticulture. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3272859
ISBN:	9780549123019

A quantified approach to tomato plant growth status for greenhouse production in a semi arid climate.
Renda da Costa, Paula Maria R.

A quantified approach to tomato plant growth status for greenhouse production in a semi arid climate. - 231 p.

Source: Dissertation Abstracts International, Volume: 68-06, Section: B, page: 3470.

Thesis (Ph.D.)--The University of Arizona, 2007.

Balancing plant growth between vegetative and reproductive status is crucial for producing high quality greenhouse tomatoes while maintaining high productivity in long crop production seasons. In the tomato industry, certain plant morphological characteristics are used to classify plant growth status as vegetative, reproductive or balanced. Each growth status has been associated with distinct greenhouse environments which reduce or enhance transpiration.

ISBN: 9780549123019Subjects--Topical Terms:

555447
Horticulture.

A quantified approach to tomato plant growth status for greenhouse production in a semi arid climate.
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100 1 $a Renda da Costa, Paula Maria R. $3 3186448
245 1 2 $a A quantified approach to tomato plant growth status for greenhouse production in a semi arid climate.
300 $a 231 p.
500 $a Source: Dissertation Abstracts International, Volume: 68-06, Section: B, page: 3470.
500 $a Adviser: Gene A. Giacomelli.
502 $a Thesis (Ph.D.)--The University of Arizona, 2007.
520 $a Balancing plant growth between vegetative and reproductive status is crucial for producing high quality greenhouse tomatoes while maintaining high productivity in long crop production seasons. In the tomato industry, certain plant morphological characteristics are used to classify plant growth status as vegetative, reproductive or balanced. Each growth status has been associated with distinct greenhouse environments which reduce or enhance transpiration.
520 $a The effect of different transpiration on vegetative, reproductive or balanced plant growth status as defined by a set of plant morphological characteristics was investigated. To validate the practical significance of such classification, growth status was quantified as the relationship between variations in morphological characteristics and the fresh weight distributed between reproductive and vegetative organs.
520 $a Two electrical conductivity (EC) levels of the nutrient solution, high and standard EC, were combined with two potential transpiration environments, low and high potential transpiration. All treatment combinations were contrasted with a reference greenhouse environment similar to the industry standard.
520 $a Electrical conductivity had the greatest effect on morphological characteristics which were reduced in size with high EC. For each EC level, the response decreased for increasing potential transpiration. Stem diameter had the greatest sensitivity to the different treatment combinations. For the standard EC and for the range of potential transpirations achieved, stem diameter varied within a relatively narrow range, close to the industry standard 'threshold' used to classify a balanced tomato plant. A reproductive plant growth status, as evaluated by a smaller value than this threshold, was observed only with high EC. No vegetative plants were produced within any potential transpiration or EC treatment combination.
520 $a High EC decreased the cumulative total fresh weight production by the same magnitude for all potential transpirations. Potential transpiration had a minimal effect on the total fresh weight production or on its components. As a result, the fresh weight ratio between reproductive and vegetative plant organs was similar for most potential transpiration environments, regardless of variations in stem diameter. Therefore, within the range of potential transpiration environments achieved, the distinction between vegetative and reproductive growth status as an indicator of fresh weight distribution and fruit yields could not be quantitatively validated.
520 $a Key words. vegetative, reproductive, balance, growth status, transpiration, electrical conductivity, vapor pressure deficit, water potential, osmotic adjustment.
590 $a School code: 0009.
650 4 $a Horticulture. $3 555447
650 4 $a Plant biology. $3 3186449
690 $a 0471
690 $a 0817
710 2 $a The University of Arizona. $b Agricultural & Biosystems Engineering. $3 1019524
773 0 $t Dissertation Abstracts International $g 68-06B.
790 $a 0009
791 $a Ph.D.
792 $a 2007
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3272859