Soil application of potassium silicate reduces the intensity of downy mildew in bitter gourd (Momordica charantia L.) leaves

Ratnayake, Rukmal; Daundasekera, W. A. M.; Ariyarathne, H.M.; Ganehenege, M. Y. U.

doi:10.4038/cjs.v45i1.7361

Cited by 7 publications

(5 citation statements)

References 32 publications

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“…It prevents physical penetration and/or makes the plant cells less susceptible to enzymatic degradation by fungal pathogens. This mechanism is supported by the positive correlation between the Si content and the degree of suppression of diseases and pests (Ratnayake et al 2016). The other one is that Si functions as a signal to induce the production of phytoalexin.…”

Section: Discussionmentioning

confidence: 90%

Silicon improves the photosynthetic performance of black pepper plants inoculated with Fusarium solani f. sp. piperis

D’Addazio¹,

Silva²,

Jardim³

et al. 2020

Photosynt.

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This study evaluated the effect of silicon (Si)-supplementation in controlling the fusariosis in two Piper nigrum cultivars (Bragantina and Kottanadan). We hypothesized that susceptible cultivar improves the photosynthetic performance with Si-supplementation. Under greenhouse conditions, six-month-old plants were treated with silicon 30 and 15 d before inoculation with Fusarium solani f. sp. piperis and compared with untreated plants and with healthy control plants. All samples remained photosynthetically active after infection. Chlorophyll content, chlorophyll a fluorescence, and leaf gas-exchange parameters were less affected in Si-supplemented plants as well as healthy control plants. The net carbon assimilation, stomatal conductance, associated with higher internal carbon values suggest that the lower CO2 influx in inoculated plants of Bragantina cultivar was caused by photochemical and biochemical limitations. Si-supplementation reduced the disease severity improving protection, apparently associated with the preservation of photosynthetic performance, especially for Bragantina cultivar.

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Section: Discussionmentioning

confidence: 90%

Silicon improves the photosynthetic performance of black pepper plants inoculated with Fusarium solani f. sp. piperis

D’Addazio¹,

Silva²,

Jardim³

et al. 2020

Photosynt.

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“…Silicon may be involved in cell elongation and/or cell division. [47] Potassium might have improved pod filling and phytomass production due to increased photosynthetic activity and effective translocation of assimilates to reproductive parts resulting in higher yield Gowthami et al [48].…”

Section: Egression Analysismentioning

confidence: 99%

Response of Some Soyabean Genotypes to Spraying with Potassium Silicate and Its effect on Yield and its Components, as Well as on Pod Worm Infestation Rate

Abdallah

Nagib

Ibrahim

2021

AJAAR

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A field experiments were conducted at Mallawy Agric. station, (latitude of 28 N, longitude of 30 E and altitude of 49 m above sea level), El-Minia Governorate, Egypt, during two successive growing seasons (2019 /2020) to study the effect of different concentrations of potassium silicate (P.Si), 0,3,6 and 9cm3/L foliar spray, under four soyabean genotypes, i.e. Giza 111, Giza22, Line3(H3L119 selected from Giza82) and Line7(H4L130 selected from Giza83) on yield ,its attributes and seed chemical analysis as well as pod warm infestation. The results indicated that, in both seasons foliar spraying of potassium silicate had highly significant effect on all studied character except seed index (S.I.). The concentration (6 cm3/L.) gave the highest values of seed yield (S.Y./F.) at 31.8 and 31.2% in the two seasons, respectively, as compared to control, as well as decreased the pod worm infestation (P.W.%) by 64.85% average both seasons. In the other hand Giza 22 surpassed the other genotypes regarding most characters, also the interaction between potassium silicate and soyabean genotypes had significant effect for all studied traits in both seasons, except seed weight/plant(S.W.) in the first season, the best values for all traits were obtained by foliar spraying of potassium silicate(6 cm3/L.) with Giza 22, furthermore the interaction ships among seed yield and its attributes through simple correlation( r) and regression(b) analysis were evaluated. Regarding correlation coefficients the seed yield was positively and significantly correlated with number of seeds /plant (No.S/P), number of pods plant-1 (No.p/p), Seed weight/ plant and seed index A strong correlation of seed yield with these traits indicated that, simultaneous improvement of these traits is possible. These findings indicate that selection for each of number of seeds plant-1, number of pods plant-1, seed weight/ plant and 1000-seed weight would be accompanied by high yielding ability under such conditions. Also, the seed yield was positively and significantly correlated with quantity traits Protein percent, oil percent, chlorophyl a (chl,a) + b (chl,b) and carotin(crt.), using silicon may be involved in cell elongation and/or cell division. negative and significant correlations were observed between seed yield (ton/fed.) and each of Infestation pods (P.W.%) and seeds (S.W.%) with pod worm percent. Decrease in these traits will ultimately Increase the seed yield. Regression procedure indicated that 6cm3/L. of potassium silicate gave the highest yield and yield components and reduce the pod worm infestation.

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“…En la temporada de otoño la incidencia disminuyó 13.1%, pero sin diferencia estadística, mientras que en la severidad se observó una reducción significativa de 66.8%, en contraste con el testigo (Cuadro 2). Al respecto, Ratnayake et al (2016), reportaron que la aplicación de silicato de potasio (200 ppm) en plantas de Momordica charantia L., redujo significativamente la severidad de Pseudoperonospora cubensis (Berk. & M.…”

Section: A B C D E Funclassified

“…Resultados similares fueron obtenidos por Garibaldi et al (2012), quienes reportaron que la aplicación de silicato de potasio, redujo la incidencia y la severidad del mildiu velloso causado por Bremia lactucae Regel, en plantas de lechuga (Lactuca sativa L.). El efecto del silicio es atribuido a la creación de barreras físicas (grosor de la cutícula) por la acumulación del mismo en las hojas, lo que impide la penetración de los patógenos y por la estimulación directa de las respuestas en el hospedero (Rodrígues et al, 2005;Ma y Yamaji, 2006;Ratnayake et al, 2016).…”

Section: A B C D E Funclassified

Identificación y alternativas de manejo del mildiu velloso en rosal

Romero

García-Velasco

Mora‐Herrera

et al. 2018

Remexca

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El mildiu velloso causado por Peronospora sparsa Berkeley es una de las enfermedades más importantes del rosal en México, causando pérdidas de 100%. Su manejo se basa con fungicidas en continuas aplicaciones que tienden a generar poblaciones resistentes. La búsqueda de alternativas es indispensable. En el presente trabajo se confirmó la identidad morfométrica y molecular del agente asociado con el mildiu del rosal, se evaluó la eficacia del fosfito de potasio (K3PO3), quitosano, silicio y mefenoxam para el manejo de la enfermedad y se determinó su efecto en la longitud y diámetro de tallo floral. El estudio se realizó en verano y otoño de 2013 en Tenancingo, Estado de México. La caracterización morfométrica se realizó bajo microscopio compuesto y electrónico de barrido. Para la caracterización molecular, se amplificó el ADN ribosomal de la región ITS con los primers PS3 y PS1. Los tratamientos fueron: fosfito de potasio (K3PO3), quitosano, silicio, mefenoxam y testigo y se aplicaron a intervalos semanales. El diseño experimental fue de bloques al azar y la comparación de medias fue por Tukey (α= 0.05). Datos morfométricos y moleculares correspondieron a Peronospora sparsa. El K3PO3 y silicio redujeron la incidencia y severidad con respecto al testigo. El tratamiento con K3PO3 mostró incrementos de 24.8 y 97.5% en la longitud de tallos con diámetros de 7.5 y 6.2 mm en verano y otoño respectivamente, comparando con el testigo. Así, el K3PO3 y silicio pueden ser alternativas en el manejo del mildiu velloso del rosal en condiciones de invernadero.

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Soil application of potassium silicate reduces the intensity of downy mildew in bitter gourd (Momordica charantia L.) leaves

Cited by 7 publications

References 32 publications

Silicon improves the photosynthetic performance of black pepper plants inoculated with Fusarium solani f. sp. piperis

Silicon improves the photosynthetic performance of black pepper plants inoculated with Fusarium solani f. sp. piperis

Response of Some Soyabean Genotypes to Spraying with Potassium Silicate and Its effect on Yield and its Components, as Well as on Pod Worm Infestation Rate

Identificación y alternativas de manejo del mildiu velloso en rosal

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