PRECISION STRESSING BY SUPPLEMENTAL Ca AND BACILLUS SUBTILIS FZB24 TO IMPROVE QUALITY OF LETTUCE UNDER PROTECTED CULTIVATION

Saleh, S. A.

doi:10.17660/actahortic.2009.824.35

Cited by 5 publications

(7 citation statements)

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“…However, it did result in a reduction (58%) in tipburn severity when applied in Misaghi et al (1981), the foliar application of 4.7 g L (1 calcium chloride or 7.1 g L (1 calcium nitrate four times during the 10-wk crop cycle did not reduce tipburn or increase the Ca concentration of the lettuce leaves. In the light of the results of the present study and those of Thibodeau and Minotti (1969), Maroto et al (1986), Jenni and Stewart (2008), Saleh (2009) and Tzortzakis (2009), the frequency of Ca applications (only four times in 10 wk) could explain the lack of response obtained by Misaghi et al (1981).…”

Section: Tipburnsupporting

confidence: 62%

“…Saleh (2009) measured a Ca concentration of 5.23 mg g (1 in young leaves. In the Irrigation/Spray Experiment and the Foliar Ca Experiment, Ca concentrations, which ranged from 3.75 to 5.21 mg g (1 , correspond to the results obtained by Barta and Tibbitts (1991) and Saleh (2009). In the analysis of Ca concentration, all affected and unaffected young leaves were taken together.…”

Section: Leaf Calcium Concentrationsupporting

confidence: 61%

“…Its effectiveness appears to vary with the timing and frequency of applications and with the concentration of Ca used. Several authors reported a reduction in tipburn incidence with foliar application of Ca (Thibodeau and Minotti 1969;Sonneveld and Van Den Ende 1975;Maroto et al 1986;Pressman et al 1993;Saleh 2009), whereas others observed no significant reduction (Walker et al 1961;Corgan and Cotter 1971;Misaghi et al 1981;Jenni and Stewart 2008).…”

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confidence: 99%

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Testing irrigation, day/night foliar spraying, foliar calcium and growth inhibitor as possible cultural practices to reduce tipburn in lettuce

CorriveauJennifer¹,

GaudreauLinda²,

CaronJean³

et al. 2012

Can. J. Plant Sci.

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2012. Testing irrigation, day/night foliar spraying, foliar calcium and growth inhibitor as possible cultural practices to reduce tipburn in lettuce. Can. J. Plant Sci. 92: 889Á899. Most of the lettuce produced in Quebec, Canada, is grown in organic soils in the area south of Montreal. Regularly, producers experience tipburn damage to their crop, a physiological disorder associated with Ca deficiency along the margins of young actively growing leaves. Therefore, active research is ongoing to reduce damage associated with this disorder. Two greenhouse trials on Romaine lettuce (Lactuca sativa L. 'Sunbelt') were conducted to measure the effect of day and night foliar water spraying, irrigation, foliar application of prohexadione calcium (a growth inhibitor) and foliar application of Ca on lettuce growth and incidence of tipburn. None of the treatments had a significant effect on biomass, dry weight, leaf number or leaf area in lettuce. However, the results show that frequent foliar applications of Ca as low as 90 mg L (1 Ca 2' resulted in a significant decreases in the number of leaves and percent leaf area with tipburn, and significant increases in Ca content in young leaves. Foliar water spraying, irrigation and foliar application of prohexadione calcium resulted in no significant differences in tipburn in greenhouse experiments. As greenhouse and field conditions may differ importantly, Ca application should be tested further at the field scale. . 2012. É tude de l'irrigation, des pulve´risations diurnes/ nocturnes d'eau sur les feuilles, de l'application de calcium aux feuilles et de l'usage d'un inhibiteur de croissance en tant qu'e´ventuelles pratiques culturales visant a`atte´nuer la bruˆlure apicale chez la laitue. Can. J. Plant Sci. 92: 889Á899. Les laitues du Que´bec (Canada) sont pour la plupart cultive´es sur des sols organiques dans la re´gion situe´e au sud de Montre´al. Les producteurs enregistrent couramment des pertes en raison de la bruˆlure apicale, proble`me de nature physiologique lie´a`une carence en Ca qui se manifeste a`la bordure des feuilles en croissance. On poursuit activement des recherches dans l'espoir d'atte´nuer les dommages attribuables a`ce proble`me. Les auteurs ont proce´de´a`deux essais en serre sur de la laitue Romaine (Lactuca sativa L. 'Sunbelt') pour jauger les effets des pulve´risations diurnes et nocturnes d'eau sur les feuilles, de l'irrigation, de l'application de prohexadione-calcium (un inhibiteur de croissance) aux feuilles et d'une application foliaire de Ca sur la croissance de la laitue et sur l'incidence de la bruˆlure apicale. Aucun traitement n'a modifie´de fac¸on significative la biomasse, le poids sec et le nombre de feuilles ni la superficie de ces dernie`res. Ne´anmoins, les re´sultats indiquent que l'application fre´quente d'une aussi faible quantite´de calcium que 90 mg de Ca 2' par litre aux feuilles entraıˆne une diminution sensible du nombre de feuilles atteintes par la bruˆlure apicale ainsi que de la partie de la surface foliaire affecte´e, tout en a...

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Section: Tipburnsupporting

confidence: 62%

Section: Leaf Calcium Concentrationsupporting

confidence: 61%

mentioning

confidence: 99%

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Testing irrigation, day/night foliar spraying, foliar calcium and growth inhibitor as possible cultural practices to reduce tipburn in lettuce

CorriveauJennifer¹,

GaudreauLinda²,

CaronJean³

et al. 2012

Can. J. Plant Sci.

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“…Increased N use is almost always associated with high nitrate accumulation, especially in leafy vegetables (Premuzic et al, 2004;Santamaria, 2006;Prasad and Chetty, 2008;Fallovo et al, 2009;Saleh et al, 2010). The extra availability of nitrogen which is not tailored to plant requirements may reduce product quality through nitrate accumulation in the edible parts (Parente et al, 2006;Saleh, 2009;Liu et al, 2014). Nitrate residues in leafy vegetables may have indirect negative effects on human health.…”

Section: Introductionmentioning

confidence: 99%

Do NH₄:NO₃ ratio and harvest time affect celery (Apium graveolens) productivity and product quality?

Saleh

Liu

et al. 2019

Folia Horticulturae

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Due to the remarkable health benefits of celery (Apium graveolens), its consumption has increased over time. A partial substitution of NO3− with NH4+ is recommended to limit the accumulation of NO3− in leafy vegetables. Hence, a factorial experiment with two factors, consisting of six treatments as combinations of three NH4:NO3 ratios (0:100, 20:80 and 40:60) in nutrient solutions and two harvesting times (in the morning and in the evening), was conducted on celery plants in a soilless culture system. The results showed that 100% NO3 as a sole N source significantly increased plant height, leaf number, chlorophyll, fresh weight, N, K, Ca, Mg, Fe, Mn, Zn, protein, dietary fibre, soluble sugars, nitrate, vitamin C, α-carotene, β-carotene and lutein of celery plants compared to either 80 or 60% NO3. However, this increase was not significant compared to 20% NH4:80% NO3 in terms of leaf number, fresh yield, N, Mg, Mn, protein, soluble sugars, vitamin C and α-carotene. Harvesting in the evening significantly increased K, Mg, Fe, soluble sugars, α-carotene and β-carotene, and lowered the nitrate level in celery plants. In conclusion, partial replacement of 20% NO3-N with 20% NH4-N and evening harvesting are recommended for a greater fresh yield, higher quality, and lower nitrate level.

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“…New agricultural applications have aimed to increase the yield and quality of plant origin food beyond of what it can be achieved by the classical agricultural practices. Bacillus subtilis, Trichoderma harzianum and pyraclostrobin uses were investigated as fungicides and bio-fertilizer during the growing of lettuce in previous agricultural studies (Amer and Utkhede 2000;Saleh 2009;Gengotti et al 2011). Some studies (Harman 2004;Arkhipova et al 2005) showed that different doses of single or mixed uses of B. subtilis, T. harzianum and pyraclostrobin increased the yield of lettuce and prevented fungal diseases successfully; however, there were limited studies relevant to their effects on quality and shelf life of lettuce (Bal and Altintas 2008;Atkinson et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Effects of Selected Bio‐Fungicide and Fungicide Treatments on Shelf Life and Quality Characteristics of Romaine Lettuce (Lactuca SativaL.)

Özdemir¹,

Özkan²,

Kosti

2015

Journal of Food Quality

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In this study, the effects of the application of selected bio-fertilizer and fungicides (Bacillus subtilis, Trichoderma harzianum, Boscalid + Pyraclostrobin, T. harzianum + 1 ⁄2Boscalid + Pyraclostrobin, B. subtilis + 1 ⁄2 Boscalid + Pyraclostrobin) on the quality of Romaine lettuce were investigated. Water, relative water and chlorophyll content, color values, sensory properties and mesophilic aerobic bacteria, mold and yeast counts were analyzed. B. subtilis and T. harzianum + 1 ⁄2 BosPyra-treated samples showed the lowest decay degree during storage. B. subtilis and T. harzianum treatments showed potential favorable effects on lettuce characteristics. Moreover, favorable effects were shown on color difference and sensory evaluations during storage so that these applications may be advisable to producers. PRACTICAL APPLICATIONSPrevious studies indicated that new biological methods increased the lettuce yield and protected lettuce from fungal diseases during growing. However, there is a scarcity on the effect of these methods on the quality, microbiota and shelf life of these lettuces. Bacillus subtilis and Trichoderma harzianum bio-fungicide treatments seemed to reduce the degree of quality deterioration during storage of lettuce, lowering microbiological growth and increasing storage life. These observations are of crucial importance for the food industry, potentially leading to increased profitability in fresh produce, including fresh processed lettuce, freshcut lettuce and ready-to-eat salads.

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PRECISION STRESSING BY SUPPLEMENTAL Ca AND BACILLUS SUBTILIS FZB24 TO IMPROVE QUALITY OF LETTUCE UNDER PROTECTED CULTIVATION

Cited by 5 publications

References 0 publications

Testing irrigation, day/night foliar spraying, foliar calcium and growth inhibitor as possible cultural practices to reduce tipburn in lettuce

Testing irrigation, day/night foliar spraying, foliar calcium and growth inhibitor as possible cultural practices to reduce tipburn in lettuce

Do NH₄:NO₃ ratio and harvest time affect celery (Apium graveolens) productivity and product quality?

Effects of Selected Bio‐Fungicide and Fungicide Treatments on Shelf Life and Quality Characteristics of Romaine Lettuce (Lactuca SativaL.)

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PRECISION STRESSING BY SUPPLEMENTAL Ca AND BACILLUS SUBTILIS FZB24 TO IMPROVE QUALITY OF LETTUCE UNDER PROTECTED CULTIVATION

Cited by 5 publications

References 0 publications

Testing irrigation, day/night foliar spraying, foliar calcium and growth inhibitor as possible cultural practices to reduce tipburn in lettuce

Testing irrigation, day/night foliar spraying, foliar calcium and growth inhibitor as possible cultural practices to reduce tipburn in lettuce

Do NH4:NO3 ratio and harvest time affect celery (Apium graveolens) productivity and product quality?

Effects of Selected Bio‐Fungicide and Fungicide Treatments on Shelf Life and Quality Characteristics of Romaine Lettuce (Lactuca SativaL.)

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Product

Resources

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Do NH₄:NO₃ ratio and harvest time affect celery (Apium graveolens) productivity and product quality?