Foliar Application Of Silicon Research Articles

Foliar-Applied Silicon in Sorghum (Sorghum bicolor L.) Alleviate Zinc Deficiency

Foliar-applied silicon may reduce the damage caused by zinc (Zn) deficiency in plants. While adding silicon (Si) and Zn to the solution may increase foliar fertilization efficiency, Si effects on sorghum plants are not known yet. Therefore, this study investigates how four different Zn chelate concentrations, with and without Si, applied via leaf, affect sorghum nutrition and development. The experimental design consisted of a 4 × 2 factorial scheme with four Zn-EDTA (0, 0.60, 1.20, and 1.80 g L−1) and two Si (control and 0.50 g L−1) concentrations applied via leaf, and five replicates. The evaluated parameters were Zn and Si accumulation, Zn use efficiency, cell electrolyte leakage, as well as chlorophyll, carotenoids, protein, and dry matter content. In Zn deficient plants, foliar-applied Si increased Zn accumulation, photosynthetic pigments, shoot and root dry matter while decreasing cell leakage. Zn chelates with added foliar-applied Si increased Zn accumulation, photosynthetic pigments, protein, and root dry matter. In conclusion, foliar spraying of Si alleviates Zn deficiency in sorghum plants and, therefore, adding Si to the Zn solution is agronomically feasible.

Combined Effects of Induced Water Deficit and Foliar Application of Silicon on the Gas Exchange of Tomatoes for Processing

The beneficial effects of silicon (Si) on plants have been widely reported for its fruit qualitative improvements, growth gains, and protection against abiotic and biotic stresses. This study aimed to evaluate the combined effect of soil water potential (Ψs) (−30 and −60 kPa) and the foliar application of Si (0.0 (control), 1.0, 2.0, 3.0, and 4.0 g L−1) in the development of tomatoes grown in a greenhouse. We evaluated the biometric parameters and gas exchange in three periods (20, 34, and 48 days after planting). The rates of transpiration (E), stomatal conductance (gs), and net photosynthesis assimilation (An) were lower when the plants were subjected to water deficit. The foliar application of Si attenuated the effect of the water deficit in both levels applied to the crop. A high response was observed at −60 kPa, regardless of the evaluated period. However, a significant effect was not observed on the relative chlorophyll index and biomass accumulation when Si was applied. A foliar application up to 2.8 g L−1 promotes increases in An,gs, and E. It is highlighted that Si can promote improvements in gas exchange when plants are affected by a water deficit.

Effect of Soil and Foliar Silicon Application on the Reduction of Zinc Toxicity in Wheat

The aim of the study was to compare soil and foliar application of Si to relieve stress in wheat caused by excess Zn in the soil. Two pot experiments were carried out in which the soil was contaminated with zinc sulphate at the dose of 600 mg kg−1 Zn before sowing. Si was applied in the soil in the following doses 200 mg kg−1 and 400 mg kg−1 Si and as foliar spraying in concentrations 2 mM L−1 and 6 mM L−1 Si in the form of sodium silicate. The applied dose of Zn was toxic to wheat and caused a significant decrease in the biomass of shoots and roots. Soil application of Si reduced the negative effect of Zn on plants and significantly increased the biomass of the tested organs. The foliar application of Si did not reduce the decrease of plant biomass. Soil contamination with Zn caused a drastic increase in Zn concentration in shoots and roots, while Si applied in the soil significantly decreased this concentration. The increase in soil pH, which was caused by sodium silicate, also affected the decrease in Zn concentration in plants. The plants absorbed Si applied to the soil, which is indicated by an increase in the Si content in shoots compared to the control. In the case of foliar spraying, only a higher dose of Si increased its concentration in the plants. The application of Si in the soil, in contrast to foliar application, reduced the transfer of Zn from roots to shoots. The higher effectiveness of soil application of Si than foliar application in alleviating the toxicity of Zn was associated with both an increase in pH and a higher uptake of Si by plants.

Yield and yield attributes of banana (Musa paradisiaca L.) cv. Grand Nain influence by foliar application of silicon

The present experiment was conducted at Regional Horticultural Research Station, ASPEE College of Horticulture and Forestry, Navsari Agricultural University, Navsari during 2017-18 and 2018-19. An experiment was laid out in a randomized block design, comprising of three levels of potassium silicate and silicic acid (1, 2 and 3 ml/l/plant) along with control. The treatments were replicated thrice. The effects of foliar applications at 2nd, 3rd and 4th months after planting of different levels of potassium silicate and silicic acid on yield and yield attributes of banana cv. Grand Nain were recorded. The results indicated that foliar application of potassium silicate @ 3ml/l/plant at 2nd, 3rd and 4th MAP recorded significantly the maximum length and girth of bunch, weight of bunch,number of hands per bunch, fingers per bunch, weight of 3rd hand, length of finger and finger weight from 3rd hand and fruit yield.

Effect of foliar application of silicon on leaf nutrient content and flowering of banana (Musa paradisiaca L.) cv. Grand Nain

The present experiment was conducted at Regional Horticultural Research Station, ASPEE College of Horticulture and Forestry, Navsari Agricultural University, Navsari during 2017-18 and 2018-19. An experiment was laid out in a randomized block design, comprising of three levels of potassium silicate and silicic acid (1, 2 and 3 ml/l/plant) along with control. The treatments were replicated thrice. The effects of foliar applications at 2nd, 3rd and 4th months after planting of different levels of potassium silicate and silicic acid on leaf nutrient content and flowering of banana cv. Grand Nain were recorded. The results indicated that foliar application of potassium silicate @ 3ml/l/plant at 2nd, 3rd and 4th MAP recorded significantly the maximum leaf nutrient content viz., N, P, K and chlorophyll content. The same treatment significantly reduced the number of days to harvest after flower initiation and crop duration whereas number of days to flowering was found non-significant.

Effect of Foliar-Applied Silicon on Flower Yield and Essential Oil Composition of Damask Rose (Rosa damascena Miller) under Water Deficit Stress

A field experiment was conducted to investigate the effect of silicon on the flower yield and essential oil composition of damask rose under water deficit stress. Silicon was applied as foliar spray at 0.2 and 0.4% concentrations in spring, summer, or both in spring and summer. Half of the plants irrigated to receive 100% plant water requirement while the other half received only 25% plant water requirement. Water deficit stress resulted in reduction of flower yield of rose (by 20%), while foliar spray of Si, regardless of time and dose of application, resulted in higher flower yield. Both Si nutrition and water deficit stress modified the flower essential oil composition of damask rose by increasing concentration of the acyclic monoterpenoid alcohol compounds including citronellol, citronellol acetate, geraniol, and eugenol. An increase in the concentration of methyl eugenol and n-heptadecan in the essential oil by Si application was also observed. In contrast, concentration of alkane compounds in the oil was decreased by Si application. Water deficit stress resulted in 52.4, 46.4, and 43.2% increase in the concentrations of geraniol, citranolol, and eugenol. Foliar application of Si at 0.2% concentration on spring and summer particularly under water stress conditions is useful to increase the essential oil content and concentration of geraniol, citronellol, eugenol and methyl eugenol which are main compounds useful for medicinal, cosmetic, and health applications of rose oil.

Root- and foliar-applied silicon modifies C: N: P ratio and increases the nutritional efficiency of pre-sprouted sugarcane seedlings under water deficit.

Water deficit limits the establishment of sugarcane plants from pre-sprouted seedlings (PSS). Silicon (Si) can mitigate such stress, and your supply in plants with the active absorption mechanism is carried out through roots. However, foliar spraying has been practiced to supply Si in PSS production nurseries. Althought it is known that Si via roots can alter C: N: P ratios, nothing has been reported about its supply via foliar spraying, nor whether such changes interfere with structural nutrient use efficiency and with plant physiological responses. Thus, this study aimes to asses whether Si foliar spraying changes C: N: P ratios and increases the nutritional efficiency of PSS, as well as whether water deficiency interferes with such a relationships. For these purposes, three experiments were carried out. In experiment I, treatments consisted of two sugarcane cultivars (CTC 4 and RB 966928) and three Si supply forms (in nutrient solution via roots [SiR], via foliar spraying [SiL], and one control with the absence of Si [-Si]). The same Si supply forms were used in the other two experiments. In experiment II, a short-term water deficit was induced by polyethylene glycol addition to nutrient solution (-0.6 MPa) for three days. In experiment III, a long-term water deficit was imposed using levels of soil water retention capacity (70% [no water deficit], 50% [moderate water deficit], and 30% [severe water deficit] for 30 days. Our findings revealed that Si supply decreased C concentrations regardless of water conditions and that N and P concentrations varied with Si supply form and water deficit level. Moreover, root- and foliar-applied Si modified the C: N: P stoichiometry and increased C use efficiency in PSS, which thus increased N and P use efficiencies. Such an increased nutritional performance helped adjust physiological parameters and increase dry matter yield in PSS, both under water stress and non-stress conditions. Further, Si foliar spraying promoted structural effects on PSS regardless of water conditions, even if sugarcane has an active absorption via roots. In conclusion, foliar spraying can be used to supply Si in PSS production nurseries.

Are Nanosilica, Potassium Silicate and New Soluble Sources of Silicon Effective for Silicon Foliar Application to Soybean and Rice Plants?

Foliar application of silicon (Si) is an effective way of supplying this beneficial element to plants. The emergence of new potential liquid sources for foliar application requires studies to assess the effectiveness of supplying Si to plants, as well as its effects on agronomic performance indicators. In this respect, the present study evaluates the effect of four sources (stabilized silicic acid; nanosilica; potassium silicate; and stabilized potassium sodium silicate) and four concentrations (0, 0.5; 1.0; 1.5 g L−1) of Si by foliar application in soybean and rice plants. An experiment was conducted for both species. The plants were grown in a greenhouse in 7 dm3 pots filled with vermiculite and nutrient solution. Four foliar application were performed during growth of the species. In both experiments, the dark green color index, electrolyte leakage, Si content, Si accumulation, shoot dry weight and production components were evaluated. In both species, all sources were effective to foliar application up to 1.2 g L−1 Si. Stabilized potassium sodium silicate increased shoot Si accumulation and grain production, being effective for foliar application in soybean and rice at around 1.0 g L−1 Si. The application of 1.5 g L−1 Si with nanosilica resulted in an improvement in shoot dry weight and grain production for both species. Maybe, its use can be more effective if applied more times during the plant life cycle or in higher concentration but more studies should be performed to determine its potential. Stabilized silicic acid can become an interesting source of silicon but need to be improved.

Foliar Spraying of Silicon Associated with Salicylic Acid Increases Silicon Absorption and Peanut Growth

Silicon (Si) combined with foliar spraying of salicylic acid (SA) can affect the absorption of this beneficial element. A study with Si non-accumulators plants (soybean and bean) observed that SA foliar spraying improved leaf absorption. However, this effect is unknown in peanut (Arachis hypogaea), a Si non-accumulator species. The aim of the present study was to assess the effect of applying Si to the leaves or roots, associated with foliar applications of SA, on Si absorption and dry weight production of peanut plants. An experiment was conducted with IAC OL4 peanut cultivars in pots filled with 6 L of sand. A randomized block design was used, in a 3 × 3 factorial scheme, as follows: Si application via leaves and roots in the form of monosilicic acid and the control (no Si) and three foliar applications of salicylic acid (0; 0.05; 0.15 mM), with five repetitions. The Si was supplied via nutrient solution (root) and leaves throughout the experiment, with three spraying treatments: at the end of the vegetative stage, onset of flowering and at the start of pod formation. The SA foliar sprayings were performed together with Si. Foliar silicon application was superior to its root counterpart at all SA concentrations. The greatest Si accumulation for root application was observed at a concentration of 0.05 mM of SA. Shoot dry weight and root dry weight production increased with Si. SA application, at a concentration of 0.05 mM, especially when associated with foliar Si, favored Si absorption and dry weight production in peanut plants. Foliar spraying of Si with the addition of salicylic acid is a new strategy for silicon supplementation in Si non-accumulators.

EFFECTS OF SILICON AND CALCIUM APPLICATION ON GROWTH, YIELD AND FRUIT QUALITY PARAMETERS OF CUCUMBER ESTABLISHED IN A SODIC SOIL

Soil salinity is a growing problem that affects crop quality. Cucumber is a vegetable eaten fresh, with great worldwide demand, making its chemical and physical characteristics important. In the present work, the effects of foliar application of silicon (Si: 0 and 2 mM), calcium (Ca: 0 and 2 mM), and the combination of both (Si + Ca: 0 + 0 mM, 2 + 0 mM, 0 + 2 mM and 2 + 2 mM) on dry matter of leaves and stems, yield and fruit quality of cucumbers grown in a sodic soil were studied. Treatments did not affect dry biomass, yield and product size. The obtained results show that applying foliar Ca increases total soluble solids in comparison to the control. Foliar Si application significantly increased fruit firmness in the end towards the peduncle. Moreover, foliar Ca application increased the fruit hue angle (intense green), while foliar Si application increased chroma (dark green), both significantly regarding the control. The individual applications of Si and Ca were proven to differentially improve the fruit quality parameters of cucumber in sodic soil conditions.

Foliar application of silicon improves stem strength under low light stress by regulating lignin biosynthesis genes in soybean (Glycine max (L.) Merr.)

In order to improve soybean’s resistance to lodging, silicon (Si) solutions at concentrations of 0,100, 200,300 mg kg−1 were applied during the seedling stage. The Si accumulation in different parts of the plants, the photosynthetic parameters of leaves and chlorophyll content, the stem bending resistance, the expression of genes of lignin biosynthesis and associated enzyme activity and sap flow rates were measured at early and late growth stages. The potential mechanisms for how Si improve growth and shade tolerance, enhances lodging resistance and improves photosynthesis were analyzed to provide a theoretical basis for the use of Si amendments in agriculture. After application of Si at 200 mg kg−1, the net photosynthetic rate of soybeans increased by 46.4 % in the light and 33.3 % under shade. The application of Si increased chlorophyll content, and fresh weight of leaves, reduced leaf area and enhanced photosynthesis by increasing stomatal conductance. The activity of peroxidase (POD), 4-coumarate:CoA ligase (4CL), cinnamyl alcohol dehydrogenase (CAD) and phenylalanine ammonia-lyase (PAL) increased during pre-and post-growth periods, whereas Si also increased lignin accumulation and inhibited lodging. We concluded that Si affects the composition of plant cell walls components, mostly by altering linkages of non-cellulosic polymers and lignin. The modifications of the cell wall network through Si application could be a useful strategy to reduce shading stress in intercropping.

Silicon Foliar Application Mitigates Salt Stress in Sweet Pepper Plants by Enhancing Water Status, Photosynthesis, Antioxidant Enzyme Activity and Fruit Yield.

Silicon is one of the most significant elements in plants under abiotic stress, so we investigated the role of silicon in alleviation of the detrimental effects of salinity at two concentrations (1500 and 3000 ppm sodium chloride) in sweet pepper plants in two seasons (2018 and 2019). Our results indicated that relative water content, concentrations of chlorophyll a and b, nitrogen, phosphorus and potassium contents, number of fruits plant−1, fruit fresh weight plant−1 (g) and fruit yield (ton hectare−1) significantly decreased in salt-stressed sweet pepper plants as compared to control plants. In addition, electrolyte leakage, proline, lipid peroxidation, superoxide (O2−) and hydrogen peroxide (H2O2) levels, soluble sugars, sucrose, and starch content as well as sodium content significantly increased under salinity conditions. Conversely, foliar application of silicon led to improvements in concentrations of chlorophyll a and b and mineral nutrients, water status, and fruit yield of sweet pepper plants. Furthermore, lipid peroxidation, electrolyte leakage, levels of superoxide, and hydrogen peroxide were decreased with silicon treatments.

Effect of Saline Water Stress in the Presence of Silicon Foliar Application on Growth, Productivity and Chemical Constituents of Chia (Salvia hispanica L.) under Egyptian Conditions

The pot experiment was carried out during two successive seasons (2016/2017 & 2017/2018) to study the effect of five levels of salinity and three levels of silicon (Si), as a foliar-spray application as well as their combinations on growth, productivity and chemical constituents of chia (Salvia hispanica L.) plants. Results showed that there was a negative relationship between vegetative growth measurements i.e., plant height, fresh weight and dry weight, flowering growth and yield parameters i.e., main inflorescence height, main inflorescence weight, inflorescences weight, seeds weights, weight of 1000 seeds and calculated seeds yield /m2 and root growth measurements i.e. root length, root weight and root diameter values and salinity treatments in both seasons. Hence, as the concentrations of salinity increased, the values of these parameters decreased to reach the maximum decreasing at the high concentration (4.69 dS m-1). Therefore, the combination treatment between 0.68 dS m-1 salinity concentration and 2000 ppm silicon scored the highest values of these parameters, in the 1st and 2nd seasons. Meanwhile, the maximum values of N, P and K contents were recorded by the combination treatment between 0.68 dS m-1 salinity concentration and 2000 ppm silicon in both seasons. Whereas, the highest values of free proline, sodium and chloride content were gained by the high concentration of salinity 4.96 dS m-1 especially those received silicon at 0 ppm in both seasons. Conclusively, the highest growth, productivity and chemical constituents of chia (Salvia hispanica L.) plant, it is preferable to grow the plants under saline water irrigation concentration at (0.68 dS m-1) and spray with silicon at 2000 ppm.

Efeito da aplicação foliar de silício nos aspectos produtivos e de qualidade de frutos de morangueiro

O objetivo do presente estudo é de avaliar o efeito da aplicação foliar de diferentes doses de silício sobre características produtivas e qualitativas das frutas de morangueiro ‘Pircinque’ cultivado nas condições edafoclimáticas do Planalto Norte Catarinense. O experimento foi realizado na área experimental do Instituto Federal de Santa Catarina, IFSC – Campus Canoinhas, e os morangueiros da cultivar Pircinque foram cultivados em sistema convencional no solo, com ambiente protegido (estufa), adotando-se um espaçamento de plantio de 30 centímetros entre plantas e linhas de plantio, com três linhas de cultivo por canteiro. Os tratamentos consistiram na aplicação foliar de cinco doses de silício, sendo elas: 0, 100, 200, 300 e 400 g/100L água, utilizando-se o produto comercial Agrisil® (99% Si). As aplicações foram realizadas a cada 21 dias, e foi avaliado seu efeito em parâmetros produtivos (número de frutos, produção, produtividade e massa fresca de fruto) e qualitativos das frutas (% comerciais, deformados e pequenos, sólidos solúveis, acidez total, Ratio e firmeza de polpa). A aplicação de silício proporcionou aumento do percentual de frutas comerciais em todas as dosagens avaliadas, além de resultar em aumento da firmeza de polpa. Ressalta-se que a aplicação do silício nas doses de 300 g e 400 g/100L água, apresentam maiores efeitos na firmeza de polpa, o que pode resultar em melhor conservação pós-colheita das frutas. A aplicação foliar de silício não influencia as variáveis produtivas e qualitativas avaliadas dos frutos do morangueiro ‘Pircinque’ cultivado no Planalto Norte Catarinense.

Effects and mechanisms of foliar application of silicon and selenium composite sols on diminishing cadmium and lead translocation and affiliated physiological and biochemical responses in hybrid rice (Oryza sativa L.) exposed to cadmium and lead

Currently, exploring effective measures to reduce multiple toxic metals accumulation in rice grains is an urgent issue to be tackled. Pot experiments were thus conducted to explore the effects and mechanisms of foliar spraying with composite sols of silicon (Si) and selenium (Se) during tillering to booting stage on diminishing cadmium (Cd) and lead (Pb) translocation to rice grains and affiliated physiological and biochemical responses in rice seedlings grown in Cd + Pb-polluted soils (positive control). Results showed that Cd and Pb contents in leaves or grains were distinctly below the positive control by the sols. Compared to the positive control, transcriptions of Cd transporter-related genes including OsLCT1, OsCCX2, OsHMA2 and OsPCR1 genes in leaves, and OsLCT1, OsCCX2, TaCNR2 and OSPCR1 in peduncles were downregulated by the increasing sols. Meanwhile, Se-binding protein 1 was evidently upregulated, together to retard Cd and Pb translocation to rice grains. The sols not only upregulated transcriptions of Lhcb1, RbcL, and OsBTF3 genes and production of psbA, Lhcb1 and RbcL proteins, but also increased the chlorophylls contents and RuBP carboxylase activities in the leaves, improving photosynthesis. The sols restrained ROS production from NADPH oxidases, but activated glutathione peroxidase, alleviating oxidative stress and damage. Additionally, Se was significantly enriched and was existed as selenomethionine in the rice grains. However, Pb transporter-related genes remain to be specified. Thus, the composite sols have potential to reduce Cd and Pb accumulation, mitigate oxidative damage, and promote photosynthesis and organic Se enrichment in rice plants under Cd and Pb combined pollution.

Mitigating water stress on wheat through foliar application of silicon

Mitigating water stress on wheat through foliar application of silicon

Impact of Foliar Application of Silicon and Selenium on Growth Characters, Yield, Physicochemical Characters, Oil Ingredients of Peanut (Arachis hypogaea L.) Variety Giza 6 under Different Planting Dates

The experiment was conducted at the Agricultural Research Center in Upper Egypt 2016-2017. We were aiming to see the effect of spraying Si (100 ppm) and Se (50 ppm) 4 times under different planting on productivity and oil quality oil variety Giza 6 under different planting dates. In this research; Si and Se with early sowing (1May) applications produced significant increases Length and branching, Attributes of productivity, oil quality of variety Giza 6.Results show that oil content ranged from 55.48% to 60.10%, The percentage of oil decreases with the delay of planting dates. There is a variation in the refractive index (1.464-1.468) with different dates or Si and Se. The acidity rate increases with the delay of cultivation. The peroxide value decreases with the first reset. And lower iodine number with first replant It contains Oleic (55.49- 60.05%). The oleic is reduced with delay in planting, while linoleic increases with the delay of planting and spraying with silicon and selenium. The highest value of O/L ratio was with early implantation and spraying with silicon and selenium. Unsaturated fatty acids exceed saturated fatty acids with silicon and selenium spray.

Enhancing Drought Tolerance in Wheat through Improving Morpho- Physiological and Antioxidants Activities of Plants by the Supplementation of Foliar Silicon

The main objective of the research is to assess the role of foliar application of silicon (Si) for enhancing the survival ability of wheat under drought stress through improving its morphology, physicochemical and antioxidan... | Find, read and cite all the research you need on Tech Science Press

Promoting effect of foliar silicon on steviol glycoside contents of Stevia rebaudiana Bertoni under salt stress

This study investigated the effect of foliar silicon application on fresh weight and dry matter contents as well as steviol glycoside contents of stevia (Stevia rebaudiana Bertoni) grown under salt stress. In this respect, an experimental research with factorial arrangement on a Completely Randomized Design with four replications was conducted in plastic pots under greenhouse conditions. Four different salinity levels (0, 25, 50, and 75 mM NaCl) were used for three weeks old seedling and two different foliar silicone concentrations (12.5 and 25 mM) were applied in the form of sodium silicate which was launched after 4 weeks of planting. Both NaCl concentrations and foliar silicone application had statistically significant effect (p≤0.05) on fresh weight and dry matter characteristics and also on rebaudioside-A and stevioside contents of stevia leaves which were harvested before flowering period. Results showed that salt stress decreased both rebaudioside-A and stevioside contents, but foliar silicone application improve negative influences of NaCl treatments with even increasing the steviol glycoside contents. Rebaudioside-A content did not change, but stevioside content decreased with foliar silicone application in control conditions. However, highest rebaudioside-A and stevioside accumulation were recorded in 25 mM foliar silicone application under 50 mM NaCl stress. In these conditions, rebaudioside-A and stevioside contents were 112 and 26% higher than control, respectively. It could be concluded that the application of silicon significantly enhanced the plants ability to withstand salt stress conditions through increased silicon content, increased steviol glycoside production. Silicon application could therefore improve crop production under salt stress.

Silicon application as an auxiliary method to control diamondback moth in cabbage plants

ABSTRACT Integrated pest management (IPM) strategies are among the factors promoting plant resistance to pests, and silicon application may increase this resistance. Thus, the aim of this research was to evaluate the control of diamondback moth (DBM), Plutella xylostella (Lepidoptera, Plutellidae) through foliar application of silicon in cabbage crops. The experiment was conducted in the vegetable producing area of Água Limpa Farm, Universidade de Brasília, Distrito Federal, Brasil. The experimental design was of randomized blocks with nine treatments and four replicates, totaling 36 plots. The applied treatments consisted of Agrosilicon® (10.5% Si) (T1), Sifol® (12% Si) (T2), deltamethrin 25 g L-1 (Decis® 25 EC) (T3), Bacillus thuringiensis, 33.60 g L-1 (Dipel® SC) (T4), Agrosilicon® + deltamethrin 25 g L-1(Decis® 25 EC) (T5), Agrosilicon® + Bacillus thuringiensis, 33.60 g L-1 (Dipel® SC) (T6), Sifol® + deltamethrin 25 g L-1 (Decis® 25 EC) (T7), Sifol® + Bacillus thuringiensis, 33.60 g L-1 (Dipel® SC) (T8) and control (T9). Agrosilicon® and Sifol® were applied weekly and the products deltamethrin and Bacillus thuringiensis were applied according to the damage level established for DBM in cabbage crops. Foliar application of silicon, alone or in combination with chemical and biological insecticides - T2, T7 and T8, were the best strategy to control DBM in cabbage crops, resulting in the lowest number of caterpillars per plant, lowest leaf damages and best aesthetic value of plants. Silicon foliar application can be considered as an auxiliary method of DBM management in cabbage crops, followed by the doses recommended by the manufacturers.