Scheduling strawberry irrigation based upon tensiometer measurement and a climatic water balance model

Krüger, Erika; Schmidt, G.; Brückner, U.

doi:10.1016/s0304-4238(99)00030-8

Cited by 63 publications

(37 citation statements)

References 6 publications

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“…To satisfy this demand, over 250,000 ha are currently designated for strawberry cultivation worldwide (FAOSTAT, 2007). Strawberry production is generally irrigated, as it is known that strawberry plants are very sensitive to drought stress during flowering and fruit ripening (Krüger, Schmidt, & Brückner, 1999). Nowadays, however, concerns are arising due to the high water abstractions used for some horticultural purposes, especially in areas where water resources are already scarce or threatened.…”

Section: Introductionmentioning

confidence: 99%

Manipulating the taste-related composition of strawberry fruits (Fragaria×ananassa) from different cultivars using deficit irrigation

2010

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a b s t r a c tDemand and, consequently, production of strawberry fruits has increased over the past few years and, as a result, the water abstractions for cultivation of this fruit have risen considerably. To limit the amounts of water used for several horticultural crops, water deficit irrigation (DI) has been seen as a potential alternative for new cultivation systems. DI in strawberry fruits is generally associated with reduction in berry size and yield; however, a recent study demonstrated that DI on strawberry can increase the concentration of some taste-and health-related compounds in fruits from cv. Elsanta. Hence, the aim of the present study was to further corroborate such findings and to assess the response (and variability) among different strawberry cultivars (namely Christine, Elsanta, Florence, Sonata and Symphony) to imposed water-DI conditions. Water-DI affected both fruit physiology and biochemistry. Nevertheless, the response to drought stress was different for each of the cultivars tested. Plants from cvs. Elsanta, Sonata and Symphony showed a greater reduction in berry size, accompanied by a significant increase in dry matter content for fruit harvested from DI-treated plants. Concomitant to this, and where dry matter was increased, the concentrations of sugars and some acids were generally higher in DI-derived fruit. In contrast, cvs. Florence and Christine did not show significant variations in berry weight or any of the target analytes measured when grown under the conditions imposed in this study. The results presented herein suggest that reducing water irrigation between flower initiation and fruit harvest may be a viable technique for increasing the concentrations of taste-related compounds in cvs. Elsanta, Sonata and Symphony and it may not have a negative impact on overall fruit size of cvs. Christine and Florence.

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Section: Introductionmentioning

confidence: 99%

Manipulating the taste-related composition of strawberry fruits (Fragaria×ananassa) from different cultivars using deficit irrigation

2010

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“…Crop sensitivity to water stress at different stages of development has strong interference on plant growth and yield (Krüger et al, 1999). The plant water status influences photosynthesis and consequently growth, since the occurrence of water deficit has direct action on metabolic and physiological processes, resulting in increased stomatal resistance (Iuchi, 1993).…”

Section: Introductionmentioning

confidence: 99%

Vegetative growth and yield of strawberry under irrigation and soil mulches for different cultivation environments

Pires¹,

Folegatti²,

Passos³

et al. 2006

Sci. agric. (Piracicaba, Braz.)

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The vegetative growth and yield of strawberry in relation to irrigation levels and soil mulches are still not well known, mainly for different environmental conditions. Two experiments were carried out in Atibaia, SP, Brazil, during 1995, one in a protected environment and the other in an open field, to evaluate the cultivar Campinas IAC-2712, under different irrigation levels and soil mulches (black and clear polyethylene). Three water potential levels in the soil were used in order to define irrigation time, corresponding to -0.010 (N 1 ), -0.035 (N 2 ), and -0.070 (N 3 ) MPa, measured through tensiometers installed at the 10 cm depth. A 2 × 3 factorial arrangement was adopted, as randomized complete block, with 5 replicates. In the protected cultivation, the irrigation levels of -0.010 and -0.035 MPa and the clear plastic mulch favored the vegetative growth, evaluated through plant height, maximum horizontal dimension of the plant, leaf area index, as well as by total marketable fruit yield and its components (mean number and weight of fruits per plant). In the open field cultivation, no effect of treatments due to rainfall were observed. Key words: Fragaria × ananassa Duch., trickle irrigation, water management, greenhouse DESENVOLVIMENTO VEGETATIVO E PRODUTIVIDADE DO MORANGUEIRO IRRIGADO, COM COBERTURAS DE SOLO EM DIFERENTES AMBIENTES DE CULTIVORESUMO: O desenvolvimento vegetativo e a produção do morangueiro submetido a diferentes níveis de irrigação e coberturas do solo ainda não é bem conhecido, principalmente para diferentes ambientes de cultivo. Foram instalados dois experimentos em Atibaia, SP, Brasil, em 1995, um em ambiente protegido e o outro em campo aberto, para avaliar o crescimento vegetativo e a produção da cultivar Campinas IAC-2712, sob diferentes níveis de irrigação e coberturas do solo (polietileno preto e transparente). Três níveis de potencial de água no solo foram utilizados a fim de determinar o momento de irrigação, correspondendo a -0,010 (N1), -0,035 (N2) e -0,070 (N3) MPa, medidos por tensiômetros instalados a 10 cm de profundidade. Os experimentos foram instalados em esquema fatorial 2 × 3, em blocos ao acaso com cinco repetições. No cultivo protegido, os níveis de irrigação de -0,010 e -0,035 MPa e a cobertura de solo com plástico transparente favoreceram o crescimento vegetativo, avaliado por meio da altura da planta, máxima dimensão horizontal da planta e índice de área foliar, além da produção total de frutos comerciáveis. No cultivo em campo aberto não houve efeito de tratamentos devido a ocorrência de chuvas durante o período experimental. Palavras-chave: Fragaria × ananassa Duch., irrigação localizada, manejo da água, estufa

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“…Chlorophyll (Chl) fluorescence provides useful information about leaf photosynthetic performance of many plants under drought stress (Baker and Rosenqvist 2004). However, studies on strawberry under drought stress are still limited and focus mainly to research on irrigation scheduling (Kruger et al 1999). In order to better understand the response of strawberry to the onset and progress of drought stress we studied Chl fluorescence parameters in parallel with plant growth performance.…”

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confidence: 99%

Chlorophyll fluorescence as a tool for evaluation of drought stress in strawberry

Razavi

Pollet²,

Steppe³

et al. 2008

Photosynt.

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The effect of water deficit on chlorophyll fluorescence, sugar content, and growth parameters of strawberry (Fragaria×ananassa Duch. cv. Elsanta) was studied. Drought stress caused significant reductions in leaf water potential, fresh and dry masses, leaf area, and leaf number. A gradual reduction of photochemical quenching (q P ) and quantum efficiency (Φ PS2 ) was observed under drought stress while non-photochemical quenching (q N ) increased. Maximum efficiency of photosystem 2 (F v /F m ) was not affected by drought stress.Additional key words: Fragaria×ananassa; maximum efficiency of photosystem 2; photochemical and non-photochemical quenching; photosynthesis; water deficit.--Water deficiency is a limiting factor for plant growth and development as well as for a wide range of physiological processes such as photosynthesis. Chlorophyll (Chl) fluorescence provides useful information about leaf photosynthetic performance of many plants under drought stress (Baker and Rosenqvist 2004). However, studies on strawberry under drought stress are still limited and focus mainly to research on irrigation scheduling (Kruger et al. 1999). In order to better understand the response of strawberry to the onset and progress of drought stress we studied Chl fluorescence parameters in parallel with plant growth performance.A greenhouse experiment was conducted from October 2006 till February 2007 with the short day cultivar Fragaria×ananassa Duch. cv. Elsanta. Plants were grown in 3 000 cm³ pots in 80 : 20 % peat and perlite mixture at 18/14 °C day/night temperature, a daily average vapour pressure deficit (VPD) of 0.5−0.9 kPa, and a 16-h photoperiod. Natural day length was extended with metal halide lamps giving 30−40 µmol(PAR) m −2 s −1 at canopy level and daily average value of PAR ranged from 20 till 150 µmol m −2 s −1 . Plants were weekly supplied with 100 cm 3 of a standard nutrient solution for strawberry (Lieten 1995) and with rain water on the other days maintaining the pots close to field capacity. After nine weeks pots were assigned to a control and a drought stress (irrigation stop) treatment in a completely randomized block design with three replicates and 25 plants for each experimental plot. Volumetric substrate moisture content θ v (Theta probe, ML2X, Delta T Devices, Cambridge, UK) was recorded at hourly intervals. During the experiment, measurements were performed at days 1, 16, 27, 40, 44, and 51. The leaf water potential (Ψ w ) of the upper leaflet of the youngest fully developed leaf (n = 6 per experimental plot) was measured with a thermocouple psychrometer operating in the psychrometric mode between 08:00 and 09:00. Chl fluorescence was measured on the youngest fully expanded triplet leaf (n = 4 per experimental plot) using a portable fluorometer (PAM-2000, Walz, Effeltrich, Germany). Leaves were allowed to dark adapt for 20 min (Genty et al. 1998). Sugars of fully expanded leaves (n = 6 per experimental plot) were extracted with 80 % ethanol and analyzed by HPLC with pulsed amperometric detection (Dione...

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Scheduling strawberry irrigation based upon tensiometer measurement and a climatic water balance model

Cited by 63 publications

References 6 publications

Manipulating the taste-related composition of strawberry fruits (Fragaria×ananassa) from different cultivars using deficit irrigation

Manipulating the taste-related composition of strawberry fruits (Fragaria×ananassa) from different cultivars using deficit irrigation

Vegetative growth and yield of strawberry under irrigation and soil mulches for different cultivation environments

Chlorophyll fluorescence as a tool for evaluation of drought stress in strawberry

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