Potassium Sulfate Research Articles

Recovery of Ca2+ and SO4 2- from Bittern Wastewater using Electrodialysis Method

The recovery of bittern is expected to obtain the added value products and minimize untreated wastewater disposal generated from the salt industry. Bittern is a waste stream resulted from the crystallization of the salt production process, consisting of a concentrated mineral in liquid form, known as the mother liquor of salt. The dominant minerals that can be recovered in bittern are calcium (Ca2+) and sulfate (SO4 2-), and salts such as calcium chloride, potassium sulfate, sodium chloride, and calcium sulfate, which are commonly found in bittern wastewater. In this study, mineral recovery of bittern was conducted by applying cylindrical membrane electrodialysis technology, due to the high demineralization rate and the applicability on fluctuating composition of the feed. This study determined differences in applied electrical current, temperature conditioning, recirculation flow rate, and specific energy requirements based on the optimum process. This research was conducted in the applied current of 5A, 7.5A, and 10A. Then, the temperature conditioning in the feed tank with a range of 25°C – 35°C, 36°C – 45°C, and without conditioning. The applied flow rate recirculation was 30 L/h and 36 L/h for 5 hours electrodialysis time. The highest removal efficiency was 31.57% and 35.03%. This result was achieved at 30 L/hour of flow rate recirculation, 10 A, and 40°C for Ca2+ and SO4 2-. Furthermore, the recovery efficiency of the ionic products was 30.17% and 27.62% for Ca2+ and SO4 2-, respectively.

Effect of Potassium Sulphate Fertilizer Doses on Sugarcane Growth Yield and Quality Grown in Sudan

Sugarcane is one of the most important crops in Sudan which played a leading role in the local and foreign trade. Research has been conducted in two sites in Sugarcane Research Center Farm in Guneid-Sudan from 5/7/2019 to 5/9/2020. The study aimed to evaluate the effect of potassium sulphate fertilizer doses on the growth, yield, and quality of sugarcane. The variety tested was Co 6806. The treatments consist of five doses of potassium sulphate (SOP) fertilizer which contains (50% K2O and 18% S); K1: 0.0, K2: 40, K3: 80, K4: 120, and K5: 160 kg SOP kg ha-1 arranged in a randomized complete block design (RCBD) replicated three times. The results obtained showed that there was a significant effect on plant growth due to the application of different levels of potassium sulphate fertilizer in the two sites. Statistically, the treatment K3: (80 SOP kg ha-1) significantly recorded the highest cane and sugar yield values compared to the other potassium sulphate levels and the control in the two different experimental sites.

Transparent conductive far-infrared radiative film based on polyvinyl alcohol with carbon fiber apply in agriculture greenhouse

Abstract In this study, a transparent conductive film is developed using polyvinyl alcohol as the substrate material and carbon fiber is deposited for electrical conductivity. The two materials are mixed into a solution and then cast to form a transparent conductive film suitable for usage in agricultural greenhouses. The designed film with a dimension of 200 mm × 200 mm has an average edge-to-edge resistance of 560.87 + 118.17 Ω, block resistance (BR) of 1.4 + 0.29 Ω/cm2, light transmittance of 70.07% over a wavelength of 400 to 780 nm, and a heating capability of 72 W/m2 via far-infrared light over a wavelength of 25–1,000 µm. Being highly transparent, the film can be integrated into the structure of agricultural greenhouses as it allows adequate sunlight penetration for the necessary photosynthesis of crops while providing heating capability during cold climates in seasonal regions such as northern China, thus replacing the need for conventional electrical heaters. A proof-of-concept is conducted at an agricultural greenhouse in Shandong, China, in rural settings where electricity may not be available. The films were powered with 200 custom-made aluminum-air (Al-air) batteries rated for 12 V, 20 mA. The electrolyte used for the batteries is potassium sulfate (K2SO4), which is a kind of agricultural chemical fertilizer that is easily available in agricultural greenhouse settings. For 7 weeks, the films were successfully powered by the batteries and operated to provide constant heating to maintain the nighttime temperature inside the greenhouse at above 10.06°C with outside temperatures dropping as low as 3.8°C.

Interactive effect of phosphorus and potassium on some properties of barley plant growth

To study the interactive effect of phosphorus concentration (0،75،100 and 125) ppm P of soil as diammonium phosphate (48% P2O5) and potassium concentration (0،50،100 and 125)ppm K of soil as potassium sulfate (50% K2O) on growth some properties of barley plants growth . Plastic pots experiment was conducted at Omar Al-mukhtar Univ , soil and water dept. Plant height ,shoots dry weight , roots dry weight and biological yield were determination. Results were showed that, P concentrations were significantly effect in increasement of all above properties. P125 superior at values of (39.10cm،20.0g،9.45g and 29.39g) per pot. K concentrations were significantly effect increasement of all above properties, K125 superior at values of (38.9cm، 20.39g ،11.63g and 32.01g) per pot. The interaction between concentrations of P and K increased all above properties significantly . The treatment P125 K125 was superior on all treatments at values of (42.9cm، 22.73g، 13.59g and 36.32g) per pot.

High‐Energy and Long‐Lifespan Potassium–Sulfur Batteries Enabled by Concentrated Electrolyte

AbstractPotassium–sulfur (K–S) batteries are emerging as low‐cost and high‐capacity energy‐storage technology. However, conventional K–S batteries suffer from two critical issues that have not yet been successfully resolved: the dissolution of potassium polysulfides (KPS) into the liquid electrolyte and the formation of K dendrites on the K metal anode, which lead to inadequate cycling efficiencies with a low reversible capacity. Herein, a high‐capacity and long cycle‐life K–S battery consisting of a highly concentrated electrolyte (HCE) (4.34 mol kg−1 potassium bis(fluorosulfonyl)imide in a 1,2‐Dimethoxyethane) and a sulfurized polyacrylonitrile (SPAN) cathode is presented The application of a HCE efficiently suppresses the dendritic growth of K, as evidenced by operando optical imaging and phase field modeling, owing to the reduced K‐ion depletion on the electrode surface and a uniform Faradaic current density over the K metal anode surface. Additionally, because S is covalently bonded to the C backbone of PAN in the SPAN structure, the SPAN cathode inhibits the dissolution of KPS. These features generate synergy that the proposed K–S battery can provide a practical areal capacity of 2.5 mAh cm−2 and unprecedented lifetimes with high Coulombic efficiencies over 700 cycles.

Synthesis, Growth, and Characterization of Methyl Orange Dye-Doped Potassium Sulphate Single Crystal and Its Multifaceted Activities

Methyl orange dye-doped K2SO4 single crystal has been synthesized by a slow evaporation method, and its properties have been investigated. The powder X-ray diffraction (PXRD) studies on the single crystal confirmed the crystalline property, noncentrosymmetric system, and the space group P63/mmc (D64th) of crystal. The reaction involved in the functional group of the grown crystal has been confirmed from the FTIR analysis. The optical properties of absorbance and band gap were calculated from the UV-Vis analysis. The obtained materials were identified from the EDX analysis. The electron transformation and optical distortion were identified at 270 nm in the photoluminescence study. The transmission electron microscopy method analyzed the morphology of the grown crystal. The dielectrics of the grown crystal were studied. The effect of temperature on the grown crystal was studied using the TG/DTA analysis. The bacterial susceptibility of the grown crystal was evaluated from Gram-positive and Gram-negative bacteria. All the results demonstrated that the grown crystal is suitable for optical, electronic, and bacterial applications.

Development of a recurrent neural networks-based NMPC for controlling the concentration of a crystallization process

Crystallization is a separation and purification process relevant to industrial sectors, such as pharmaceuticals. The maximum possible recovery of solute amount is one of its goals, and the temperature profile is crucial to achieve this. In this work, neural networks-based models were developed to predict the solute concentration of a batch crystallization process and used as internal model in a nonlinear model predictive controller. Three different neural network architectures were considered: the multilayer perceptron (MLP) network, the echo state network (ESN), and the long short-term memory (LSTM). The dataset used for training and testing applied a co-teaching learning algorithm, which uses simulated and experimental data from the batch crystallization of the potassium sulfate (K2SO4). The three network structures were trained to predict the solute concentration one step ahead, using the current temperature and concentration values as feed, and the predictive performances were evaluated for larger prediction horizons. A nonlinear model predictive controller (NMPC) based on the ESN, the most efficient neural network design, was successfully applied to the batch crystallization process to maintain the solute concentration on its desired trajectories by manipulating the operating temperature. The controller's behavior was studied for three different set-points of concentration and supersaturation, varying the initial concentration. The performance of the proposed NMPC was compared to a controller based on a more traditional approach, using the MLP network as internal model.

An emission-free controlled potassium pyrosulfate roasting-assisted leaching process for selective lithium recycling from spent Li-ion batteries

Recycling critical metals from spent Li-ion batteries (LIBs) is important for the overall sustainability of future batteries. This study reports an improved sulfation roasting technology to efficiently recycle Li and Co from spent LiCoO2 LIBs using potassium pyrosulfate as sulfurizing reagent. By sulfation roasting, LiCoO2 was converted into water-soluble lithium potassium sulfate and water-insoluble cobalt oxide. Under optimal conditions, 98.51% Li was leached in water, with a selectivity of 99.86%. More importantly, sulfur can be recirculated thoroughly, and the sulfur atomic efficiency can be significantly enhanced by controlling the amount of potassium pyrosulfate. Li ions from the water leaching process were recovered by chemical precipitation. Furthermore, application of this technology to other spent LIBs, such as LiMn2O4 and LiNi0.5Co0.2Mn0.3O2, verified its effectiveness for selective recovery Li. These findings can provide some inspiration for high efficiency and environmentally friendly recovery metal from spent LIBs.

Chemical Composition and Source Apportionment of Winter Fog in Amritsar: An Urban City of North-Western India

Winter fog is a complex issue affecting human health and is responsible for higher numbers of traffic accidents in North India, which is further aggravated due to atmospheric pollutants. An indigenous glass-plate fog collector was used to collect fog water from December 2020 to February 2021. Thirty samples of fog water were collected from the rooftop of an academic building at Guru Nanak Dev University, Amritsar, in order to study the chemistry of fog water. The studied parameters were pH, electrical conductivity (EC), sodium (Na+), calcium (Ca2+), magnesium (Mg2+), potassium (K+) sulphate (SO42−), nitrate (NO3−), chloride (Cl−), aluminum (Al), lead (Pb) and zinc (Zn). The average values were as follows: pH (4.6–7.5), EC (135 µS/cm), SO42− (77.5 ppm), Cl− (9.9 ppm), NO3− (9.3 ppm), Ca2+ (8.1 ppm), Mg2+ (2.0 ppm), K+ (2.0 ppm), Na+ (1.6 ppm), Zn (218 ppb), Al (60.8 ppb) and Pb (8.8 ppb). Cation–anion balance was used to assess the data’s reliability. The enrichment factor (EF) was utilized to distinguish between crustal and anthropogenic sources. SO42−, NO3−, Cl− and K+ originated from anthropogenic sources, whereas Mg2+ and Na+ came from crustal sources. The molar ratio of sulphate to nitrate was 10.6, which indicates a greater contribution from the combustion of fossil fuels and stack emissions. Ionic species were subjected to principal component analysis (PCA) as a dimensionality reduction approach and to group species with comparable behavior. Three principal components (PC) that together accounted for 77.5 percent of the total variance were identified by PCA. Backward trajectory analysis of air masses was performed to determine their origin, and two major clusters explained 89 percent of the contribution of air masses, primarily from the north-east and north directions. To gain a comprehensive understanding of fog water, a global perspective on pH, EC and ionic species is considered.

Effect of potassium and biological fertilization on vegetative growth characteristics of two potatoes cultivars (Solanum tuberosum L.)

This experiment was carried out during the spring growing season 2021 in the research field of the Faculty of Agriculture and Forestry / University of Mosul / Tourist Forestry Zone, to study the response of three factors in the vegetative growth traits of the potato varieties. The first factor included two varieties of potatoes (Taurus and Universa), the second factor included bio-fertilizer (Trichoderma fungi) with two levels and only once (5 g.m2, without addition), and the third factor included potassium fertilizer as sulfate potassium at four levels (0, 100, 200, 300 kg.ha-1). The results were as follows: The treatment of the cultivar Taurus gave the highest significant values in plant height, leafy area, number of aerial stems, relative content of chlorophyll in the leaves and percentage of dry matter in the leaves a value of 96.18 cm.Plant-1 , 5918.6 cm2.Plant-1 , 3.41 steem.Plant-1, 23.58 and 17.88% respectively. The treatment of bio-fertilization at a concentration of 5 g.m2 was given the highest significant values in the relative content of chlorophyll in the leaves at a value of 22.35.

Efficiency of different potassium and sulfur fertilizers on peanut (Arachis hypogaea) production in tropical sandy soil

In the sandy soil of Vietnam's South-Central Coast, peanuts are a significant crop. The application of K and S needs to crops has recently attracted a lot of interest, especially for peanut. However, a comparison on the effects of different types of K and S fertilizers viz., ammonium sulphate (AS), superphosphate (SP), NPKS, potassium sulphate (SOP), and potassium chloride (MOP) is to be evaluated on the yield, quality, and K and S content in peanut seed. This study was conducted during winter spring and summer seasons 2019 - 2020 at Binh Dinh province (SCCVN). Equal rate of 75 kg K/ha and 30 kg S/ha was applied as SOP, NPKS and a mixture of AS, SP, MOP and these were compared against a control which applied nitrogen (N) and phosphorus (P) fertilizers. SOP application resulted in the highest yield (2.93 - 4.92 t/ha), protein (24 %), lipid (53 %) and seed K (0.19-0.53 %) and seed S (0.57-0.69 %). The study concluded that application of 75 kg K/ha and 30 kg S/ha in SOP fertilizer based on @ 8 tons of cattle manure + 40 kg N + 40 kg P + 500 kg lime/ha is suitable for peanut crop in SCCVN.

Efficiency of different potassium and sulfur fertilizers on peanut (Arachis hypogaea) production in tropical sandy soil

In the sandy soil of Vietnam's South-Central Coast, peanuts are a significant crop. The application of K and S needs to crops has recently attracted a lot of interest, especially for peanut. However, a comparison on the effects of different types of K and S fertilizers viz., ammonium sulphate (AS), superphosphate (SP), NPKS, potassium sulphate (SOP), and potassium chloride (MOP) is to be evaluated on the yield, quality, and K and S content in peanut seed. This study was conducted during winter spring and summer seasons 2019 - 2020 at Binh Dinh province (SCCVN). Equal rate of 75 kg K/ha and 30 kg S/ha was applied as SOP, NPKS and a mixture of AS, SP, MOP and these were compared against a control which applied nitrogen (N) and phosphorus (P) fertilizers. SOP application resulted in the highest yield (2.93 - 4.92 t/ha), protein (24 %), lipid (53 %) and seed K (0.19-0.53 %) and seed S (0.57-0.69 %). The study concluded that application of 75 kg K/ha and 30 kg S/ha in SOP fertilizer based on @ 8 tons of cattle manure + 40 kg N + 40 kg P + 500 kg lime/ha is suitable for peanut crop in SCCVN.

Curative activity of KCl treatments to control citrus sour rot

The potassium chloride (KCl), potassium nitrate (KNO3) and potassium sulfate (K2SO4) could inhibit G. citri-aurantii development in vitro, and control the efficient soaking of 0.1 and 0.5 M KCl reached 14.1% and 46.3% in vivo. In addition, 0.5 M KCl treatment made no difference on fruit quality of weight loss, soluble solid and titratable acid neither in the incidence of sour rot, which decreased to 2.35% during 90 days storage period. Furthermore, the citrus peel enzyme activity of CAT, PPO and Cellulase significant increased, G. citri-aurantii spores were gathered into long chain shape preventing spore germination and lipid droplets (LDs) accumulated in large quantities after KCl treatment by TEM. In addition, transcriptome sequencing analysis was confirmed and the six genes (Gci002087, Gci003354, Gci000394, Gci003505, Gci004433 and Gci000013) involved in target of rapamycin (TOR) pathway. The results of this study provide a new direction for sour rot prevention.

Nematicidal Activity of Inorganic Food Additives

The food industry is not the only sphere of human activity where inorganic food additives are globally used. In certain concentrations, they are safe for people and agricultural animals. Nonetheless, they impose a negative impact on other classes of living organisms. Therefore, our objective was to determinine the influence of some inorganic food additives (alkalis, acids, salts) on the vitality of nematode larvae that parasitize agricultural animals: Strongyloides papillosus, Haemonchus contortus and Muellerius capillaris. We studied the effects of sodium hydroxide, potassium hydroxide, boric acid, phosphoric acid, potassium chloride, calcium chloride, sodium nitrite, potassium nitrite, sodium nitrate, potassium nitrate, ammonium bicarbonate, sodium bisulfite, sodium bisulfate, sodium sulfate, potassium sulfate, calcium sulfate, sodium thiosulfate, sodium metabisulfite, potassium metabisulfite, copper sulfate pentahydrate, tetrasodium pyrophosphate, sodium triphosphate, sodium borate decahydrate and talc. In in vitro experiments, the strongest effects were produced by alkalis sodium hydroxide and potassium hydroxide. In 24 h, 1% solutions of those substances killed 69% of larvae of S. papillosus, H. contortus and M. capillaris of various development stages. Sodium sulfate was effective against all stages of larvae of S. papillosus, and also against first-age M. capillaris. Nematocidal properties only against all stages of S. papillosus were exerted by copper sulfate pentahydrate. Non-invasive stages of S. papillosus nematodes were affected only by phosphoric acid, ammonium bicarbonate, calcium chloride, sodium nitrite, calcium sulfate, potassium metabisulfite, tetrasodium pyrophosphate, sodium triphosphate and the same stages of M. capillaris—by phosphoric acid, sodium bisulfite and potassium nitrite.

An AHP-based evaluation system applied for phytoremediation method selection in heavy metal contaminated farmland

Phytoremediation assisted by chemicals is widely applied in heavy metal contaminated farmland remediation. In this study, an effective and comprehensive scoring system was established based on analytic hierarchy process (AHP) assisted by principal component analysis (PCA) and ecological hazard index (EHI). Taking the remediating effect-related characteristics of soil, plant, and microbe into account, the system was designed to encompass 3 criteria containing 9 features and 14 indexes to evaluate the remediating methods. Data of all indexes were then normalized to guarantee their comparability. Afterward, the system was applied in a farmland-remediating case study. Two widely-used methods of phytoremediation, i.e., phytoextraction and phytostabilization, together with 8 chemicals were conducted in the case study to verify the accuracy and feasibility of the evaluation system. Amaranthus hypochondriacus and Jatropha curcas L. were selected as the remediating plants for phytoextraction and phytostabilization, respectively. Urea, potassium sulfate (K2SO4), lime and dolomite were selected to assist phytoremediation. As for the results, applying potassium sulfate (K2SO4) once (EP1) and no amendments applied (SCK) are the best choice for phytoextraction and phytostabilization, respectively. SCK performed better, but with the plants growing, the scores of phytostabilization lessened while phytoextraction elevated. Thus, in the long term, EP1 should be the main remediation method with SCK being the auxiliary one in this farmland. A further endeavor was made to simplify the established system at 3 levels based on 3 principles, i.e., importance, difference, and complexity, to meet the need of different assessments. In conclusion, this comprehensive scoring evaluation system characterized as systematic, accurate, and reasonable could serve as a reference for decision-making of heavy metal contaminated soil remediation.

Simultaneous refining of biodiesel-derived crude glycerol and synthesis of value-added powdered catalysts for biodiesel production: A green chemistry approach for sustainable biodiesel industries

Glycerol is one of the industrially important chemicals having a wide range of applications in many fields. One of the important processes to obtain glycerol is during the biodiesel production, where it is formed as a by-product. However, it is crude and needs to be purified. Interestingly, the purification process of glycerol can be versatile, where it is possible to purify the crude glycerol and synthesize value-added chemical simultaneously. In this context, herein, we have developed an acidification-based process and demonstrated the concurrent purification of biodiesel-derived glycerol and the synthesis of sodium sulphate (Na2SO4) and potassium sulphate (K2SO4) as value-added chemicals. . The obtained results reveal that the established process is promising and yields commercial-grade glycerol (with ∼95% purity) along with the value-added chemicals Na2SO4 and K2SO4 with a purity of ∼95 and 98%, respectively. In addition, these synthesized powders have also been utilized as catalyst in biodiesel production with a yield of 96.1 and 94.8%, respectively with 3.5 wt% catalyst concentration. From the kinetic study, which is the pseudo-first order reaction, the activation-energy and frequency-factor for Na2SO4 and K2SO4 are estimated to be 38.27 kJ/mol and 2.2 × 104 min−1 and 44.69 kJ/mol and 2.4 × 105 min−1, respectively. The thermodynamic parameters of enthalpy (ΔH), entropy (ΔS) and Gibbs free energy (ΔG) of Na2SO4 and K2SO4 catalysed process suggested the endothermic, endergonic, and non-spontaneous nature of the reaction. Further, the recovered Na2SO4 and K2SO4 were reused for four times in biodiesel production, which showed a consistent yield of biodiesel in all the four cycles.

Treatment Result of the Mucopexy-Recto Anal Lifting Method for Hemorrhoids in Comparison with Ligation and Excision, and Aluminum Potassium Sulfate and Tannic Acid Sclerotherapy.

The outcomes of Mucopexy-Recto Anal Lifting (MuRAL) in hemorrhoid surgery were compared with ligation and excision (LE), and aluminum potassium sulfate and tannic acid sclerotherapy (ALTA). In this study, we conducted a 3-year follow-up study of MuRAL (380 cases) and compared it with LE (1417 cases) and ALTA (541 cases) performed at the same period. Operative time, mean hospital stay, postoperative pain, postoperative complications, and recurrence were compared and examined retrospectively. The mean operative time was the longest for MuRAL, followed by LE, and then ALTA at 29.1, 21.5, and 12.4 minutes, and the mean length of hospital stay was 6.2, 10.6, and 1.3, days, respectively. Based on the frequency of injectable analgesic use, postoperative pain was clearly milder in MuRAL and ALTA than in LE. The recurrence rates were 3.2% with MuRAL, 1.1% with LE, and 12.4% with ALTA. Early postoperative low-grade fever and bowel movement urgency were observed in all surgeries, but these were minor and did not pose a safety problem. LE is painful and requires prolonged hospitalization but is the most curative; ALTA is simple and can be performed as a day surgery but has a high recurrence rate. MuRAL was less painful than LE and had a lower recurrence rate than ALTA. In recent years, there have been various innovations in the surgical treatment of hemorrhoids, and choosing a technique that is appropriate for the condition of the hemorrhoid and patient's needs is necessary. MuRAL can be one of the options for hemorrhoid treatment as a “cure without cutting” method.

Micellization of sodium dodecyl sulphate in the presence and absence of potassium sulphate and nickel sulphate

The effect of addition of salts on the micellization of anionic surfactant sodium dodecyl sulphate (SDS) in aqueous medium has been studied by conductance measurement at 298.15 K. The critical micelle concentration (CMC) as well as thermodynamic properties was evaluated. From the premicellar and postmicellar slopes, the degree of dissociation (α) of SDS was also calculated. On adding the salts, CMC decreased whereas degree of dissociation increased. Employing these CMC and α values, the standard free energy of micellization was also evaluated. The negative values of was decreased when K2SO4 was added but increased when NiSO4 was added. BIBECHANA 19(2022)195-200

Simple Preparation of Injectable Hydrogels with Phase-Separated Structures That Can Encapsulate Live Cells.

Injectable hydrogels are biomaterials that can be administered minimally invasively in liquid form and are considered promising artificial extracellular matrix (ECM) materials. However, ordinary injectable hydrogels are synthesized from water-soluble molecules to ensure injectability, resulting in non-phase-separated structures, making them structurally different from natural ECMs with phase-separated insoluble structural proteins, such as collagen and elastin. Here, we propose a simple material design approach to impart phase-separated structures to injectable hydrogels by adding inorganic salts. Injecting a gelling solution of mutually cross-linkable tetra-arm poly(ethylene glycol)s with potassium sulfate at optimal concentrations results in the formation of a hydrogel with phase-separated structures in situ. These phase-separated structures provide up to an 8-fold increase in fracture toughness while allowing the encapsulation of live mouse chondrogenic cells without compromising their proliferative activity. Our findings highlight that the concentration of inorganic salts is an important design parameter in injectable hydrogels for artificial ECMs.

Effect of post-shooting bunch spray of growth hormone and fertilizer on yield attributing characters of banana

An experiment was conducted at a commercial banana orchard in Chitwan to find out the best chemical to increase the yield and quality of banana during the fruit development stage. The research was laid out in a randomized complete block design (RCBD) with seven treatments and three replications. The treatment included plant growth hormones GA3 and Naphthalene acetic acid (NAA)@ 50 ppm and 100 ppm each. Similarly, Sulphate of Potash (SOP) was applied @ 1.5% and 2%. The first spray was applied soon after the bunch had completely opened, and the second spray was applied 15 days later. The effect of these chemicals on yield and quality parameters was observed. The result revealed that the application of GA3 @ 100 ppm increased the length, girth and weight of the bananas. Likewise, the highest weight of the third hand of the banana was also observed in GA3 @ 100 ppm, whereas minimum physiological loss in the weight of the finger and maximum pulp to peel ratio was observed in SOP @ 1.5%. Analyzing all these observed parameters, GA3 @ 100ppm was found to be the most suitable growth hormone to increase the overall yield while SOP @ 1.5% SAARC J. Agric., 20(1): 157-169 (2022)