Different Sources Of Potassium Research Articles

Shoot and Root Responses of Mung Bean (Vigna radiata L.) to Phosphorus Fertilizer Placement with Different Potassium Sources

ABSTRACT Mung bean (Vigna radiata L.) is a major pulse crop in many parts of the world, but its yields are generally lower than other pulse crops due to biotic and abiotic stresses, including nutrition. An experiment was conducted to examine the effects of localized application of phosphorus (P) (32P labeled P fertilizer) and different sources of potassium (K) (KNO3, KCl, K2SO4 and KH2PO4) on shoot and root growth of mung bean, nutrient uptake and applied P and K recovery on a sandy loam Yellow Chromosol soil with low P and K status. Among the K sources highest shoot and root yield was obtained with K2SO4. Similarly, total plant P and the percentage of total P content obtained from the fertilizer (Pdff) was highest in this treatment. P application resulted in an increase in root length/soil mass, root mass density both inside and outside the band and in the percentage of roots in the fertilizer band. Each of the above parameters was numerically highest in the P+K2SO4 surface applied treatment. Root growth in the banded P resulted in better mung bean growth and nutrient uptake which was associated with stimulated root growth in the band and/or through increased uptake of P per unit root length. Co-application of K with P did not stimulate P uptake. Since co-application of P and K did not result in a synergistic response to either nutrient separation of these nutrients can be practiced.

Effect of Foliar Spraying with Different Sources of Potassium on Growth, Leaf Mineral Composition, Yield and Fruit quality of Picual Olive Trees.

Effect of Foliar Spraying with Different Sources of Potassium on Growth, Leaf Mineral Composition, Yield and Fruit quality of Picual Olive Trees.

Efficacy of different Potassium Sources on Quantitative and Qualitative Character of Litchi cv. Bombai grown in Indo-Gangetic Plain of West Bengal

A field experiment was carried out at Regional Research Station, New Alluvial Zone, Bidhan Chandra Krishi Viswavidyalaya, Gayeshpur, Nadia, West Bengal, India during September 2014 to July 2017 to study the effect of different sources of potassium on fruit growth, yield and quality of Litchi cv. Bombai grown in Indo-gangetic plain of West Bengal. The experiment was laid out in Randomized Block Design consisting of seven treatments with three replications. All the plants were uniform in growth, 12 years of age and healthy spaced at 10×10 m2. The results revealed that the application of different sources of potassium significantly improved the physico-chemical qualities and leaf mineral content of litchi. Among the different sources of potassium in the study, application of KNO3 @ 2% along with fixed doses of N @ 1000 g and P2O5 @ 500 g-1 plant-1 year-1 showed maximum vegetative growth in terms of plant height (5.00 m), spread (N-S and E-W) while application of K2SO4 @ 2% along with fixed doses of N @ 1000 g and P2O5 @ 500 g plant-1 year-1 showed highest fruit retention m-2 (32.50 no), yield (72.60 kg plant-1), fruit weight (23.03 g), fruit length (4.08 cm), breadth (3.30 cm), aril weight (15.99 g), TSS (19.17 °Brix), total sugar (14.98 %), lowest reducing sugar (11.19%) with highest Vitamin C (32.83 mg 100 g-1), Anthocyanin content (38.02 mg 100 g-1)and highest mineral content (N, P, K, Ca, B and Zn) of the leaf.

Biochemical and sensory traits of potato for processing purpose as influenced by vermicompost and potassium sources

Production of low-quality potato is the main constraint for increasing the processing and export scenario in Bangladesh. Hence, application of different sources of potassium and vermicompost may improve the biochemical and sensory quality of potato. The experiment was conducted to assess the effect of potassium sources and vermicompost level on the yield and processing quality of potato. The potato variety BARI Alu-25 (Asterix) was used as test crop for this experiment. The experiment consisted of two factors: Factor A: 3 sources of Potassium as-K1: KCl, K2: KNO3, K3: K2SO4; Factor B: 4 levels of vermicompost as-Vm0: 0 ton, Vm1: 4 ton, Vm2: 8 ton, and Vm3: 12 ton. The experiment was laid out in a split-plot design with three replications. Results revealed that the highest dry matter content (19.83%), specific gravity (1.090 g/cc), and starch (14.81%) were recorded from K2SO4, whereas, the lowest from KNO3. The firmness, dry matter content, specific gravity, and starch content increased with increasing the vermicompost level. A negative relation was observed in the case of TSS and sugar content. Among the 12 treatment combinations, the highest dry matter content (21.12%), specific gravity (1.103 g/cc), and starch (16.34%) were found from K3Vm3, whereas, the lowest from K2Vm0 treatment. However, K1Vm2, K1Vm3, K3Vm2, K3Vm3 showed statistically similar results regarding quality attributes. But the availability of potassium sources and economic point of view, KCl combined with 8-ton vermicompost ha-1 could be used for the production of good quality potato.

The effects of different sources of potassium and calcium on yield and ionic balance of tomatoes under salinity stress in hydroponic cultivation

The effects of different sources of potassium and calcium on yield and ionic balance of tomatoes under salinity stress in hydroponic cultivation

English

Potassium nutrition has been used in controlling fungal and bacterial diseases of plants. However, this has not yet been tested on control of Fusarium (Fusarium oxysporum f.sp. cubense -Foc), a major fungal disease constraining apple banana production. This study was set up with a general objective to investigate the effects of potassium on tolerance to Fusarium wilt in apple bananas using chlorophyll content, stomatal conductance and severity of Fusarium wilt symptoms as indicators. A screen house pot experiment was set up using tissue culture plantlets of apple bananas cv Ndiizi. Treatments comprised of different sources of potassium (Manure, inorganic K and potassium solubilizing bacteria -KSB) in a full factorial combination. Manure and Muriate of potash (MOP) were applied at rates equivalent to 150 kg K/ha and KSB (Frateuria auranta) at a rate of 1 l/ha. Fusarium wilt was inoculated in half the pots at 8 weeks after planting. Measurements on chlorophyll content and stomatal conductance as well as growth parameters were taken on weekly basis from the time of inoculation. Fusarium wilt significantly reduced stomatal conductance and chlorophyll content of the plants. Application of integrated potassium management (KSB x MOP x Manure) significantly reduced Fusarium wilt symptom expression.   Key words: Chlorophyll content, stomatal conductance, Fusarium oxysporum sp. Cubense, manure, potassium.

Influence of potassium fertilization on yield, petiole and soil nutrient status of table grape cv. Sharad seedless

Potassium (K) is one of the important essential elements for vine growth and yield. Grape growers are applying fertilizers through soil and also through fertigation. But, the information on to what extent they can apportion the fertilizer application through these methods to improve nutrient use efficiency is not available. Present investigation aimed to study the influence of combined application of different sources of potassium and their method of application on yield, soil and petiole-nutrient status for two consequitive years. Pooled analysis revealed that yield and major nutrients were affected significantly (P < 0.05) by the different treatments. Grapevines fertilized with 40% KNO3 (potassium nitrate) through fertigation + 60% SOP (Sulfate of Potash) through soil showed significantly highest yield vine-1 (7.00 kg). Leaf petiole analysis revealed that potassium applied at different combination caused wide variation in leaf petiole contents of N, K, Ca and Mg. The vines which received 40% SOP through fertigation + 60% SOP through soil had recorded highest potassium and lowest nitrogen, calcium and magnesium contents in petioles. The vines which supplied with 100% SOP through fertigation showed least petiole potassium content. Application of SOP through both fertigation and soil at different doses significantly increased available soil potassium compared to potassium supplied through fertigation and/or soil alone. There was significant negative correlation between potassium and calcium (r= −0.914) and potassium and magnesium (r= − 0.733) in soil.

Effect of Irrigation Intervals under Different Sources of Potassium on Growth and Productivity of Garlic تأثير فترات الرى تحت مصادر بوتاسيوم مختلفة على نمو وإنتاجية الثوم

Two field experiments were carried out at the Vegetable Crops Farm in Baramoon Research Station, Dakahlia governorate, Egypt, during the two winter seasons, to investigate the effect of irrigation intervals under different sources of potassium combined with foliar application nano-K fertilizer on plant growth and productivity of garlic cv.Sids 40. The experiment includes 42 treatments which arranged in strip-split block design, as the interactions between three irrigation intervals (14, 21 and 28 days) as vertical plots, seven sources of potassium fertilization (100% K-mineral (150 kg Potassium Sulphate/fed.), 100% K-biofertilizer (2 L/fed., PSDB, Bacillus circulans), 100 % K-natural (700 kg Feldspar/fed.), 50 % K- mineral (75 kg/fed.) +50 % K-natural (350 kg/fed.), 50 % K- mineral (75 kg/fed.)+inoculated by PSDB, 50 % K-natural (350 kg/fed.)+inoculated by PSDB, and 33% K- mineral (50 kg/fed.)+33% K-natural (235 kg/fed.)+inoculated by PSDB as horizontal plots and two foliar applications (with nano-K and without) as split plots. Obtained results indicated that, the fertilization of plants with different sources of potassium as 33% K-mineral (50kg/fed.)+33% K-natural (235 kg/fed.) combined with inoculated by PSDB (2 L/fed), showed the best vegetative growth parameters and the highest yield productivity followed by the treatment of 50% K- mineral+50 % K-natural combined with foliar application by 3000 ppm nano-K particles under irrigation every 21 days Therefore, we recommend this treatment because it saves in the amount of mineral potassium and the amount of irrigation water and thus reduces the costs of garlic production and environmental pollution under the same conditions.

Response of Grand Nain Banana Plants to Different Potassium Fertilizer Sources استجابة نباتات الموز جراندنان لمصادر مختلفة من التسميد البوتاسي

Finding a rich and natural source of potassium nutrient is a major challenge facing banana cultivation. In this study, four different sources of Potassium: potassium sulphate, slow release (feldspar), bio-fertilizer (yeast & potassin) and potassium thiosulphate were used to evaluate their effects on growth & fruit production of Grand Nain banana cultivar grown at Luxor Governorate condition, Egypt. The results indicated that using yeast or feldspar alone or in combination as a source of potassium and potassin significantly increased all growth aspects, yield and fruit quality compared to fertilize by potassium sulphate (check treatment); Moreover, there were insignificant differences in these studied traits due to fertilize with yeast, feldspar alone or in combination as well as spraying potassium thiosulphate or potassin. Using yeast or feldspar plus yeast were very effective in enhancing all growth aspects, yield, bunch traits and fruit characteristics compared to untreated ones; So, it is evident from the foregoing result that using feldspar or yeast alone or in combination improved the growth, nutritional status and fruiting of Grand Nain banana plants;. In addition, they are beneficial in organic farming production since they improve the soil structure and fertility; also, reduce the cost of production and environmental pollution.

EFFECT OF FOLIAR SPRAY WITH DIFFERENT POTASSIUM SOURCES AND ZINC RATES ON GROWTH AND YIELD OF SWEET POTATO (Ipomoea batatas L.).

Two field experiments were carried out during 2017 and 2018 seasons atExperimental Farm, Faculty of Technology and Development (Ghazala Region –Zagazig City), Sharkia Governorate (Egypt) to investigate the effect of different potassium sources and zinc fertilizer levels on growth and yield of sweet potato plant cv. Menoufia 6. The experimentwas set up arandomized complete blocks design which included 7 treatments of different sources of potassium and zinc (EDDTA)rates(i.e., potassium silicate 2 mll-1 and 4 mll-1, potassium humate, 2 mll-1 and 4 mll-1 and zinc (EDDTA), 2 mll-1 and 4 mll-1, besides the control treatment without any addition . The obtained results could be summarized as follows: application of foliar spray with zinc (EDDTA) with4 mll-1, being the most effective treatment on vegetative growth and chemical composition, while 4mll-1 potassium silicate as foliar application caused a significantly increased in tuber yield and quality of sweet potato, followed by the treatment of 4 mll-1 zinc in most cases, in both growing seasons. Conclusively, it could be concluded that, using the treatment of 4 mll-1 zinc (EDDTA) caused an increases in plant growth parameters and chemical composition of sweet potato plant cv. Menoufia 6, while 4 mll-1 potassium silicate significantly increased tuber yield and quality.

Effect of different sources of potassium on yield and quality of apple (cv. Red Delicious) in temperate conditions

The present investigation was carried out to observe the effect of potassium on different parameters of apple in temperate conditions. Randomized block design experiment was adapted for an orchard of 15 years old with collection of soil samples and their analysis for physico-chemical properties under different treatments with fixed quantity of urea (1500g/tree), DAP (750g/tree) and potassium through MOP, K2SO4 and K-Schoenite (2500g/tree) in three, one and two split applications, respectively. The first application of recommended quantity of fertilizers was applied three weeks before expected bloom, Second three weeks after fruit set and third application at the end of July. Sample collection was done in the month of September followed by analysis for different parameters and results revealed that application of potassium through MOP @ 2500g/tree with two foliar applications of MOP @ 1.5 % including vermicompost @ 5kg/tree (T4) improved soil physical conditions, nutrient availability, fruit yield and quality of apple. The combined effect of chemical fertilizer, two sprays and organic fertilizer (vermicompost) showed significantly (P?0.05) higher results of nitrogen, phosphorous, potassium magnesium and sulphur but low calcium than other vermicompost added treatments. The work concluded that different potassium sources can have great impact on yield and quality of apple and respond to level of concentrations or dose as applied in current study with different split.

Effect of Different Sources of Potassium on the Nutrient Status of Saline Calcareous Soil and Carrot (Daucus carota L.) Yield and Quality

Effect of Different Sources of Potassium on the Nutrient Status of Saline Calcareous Soil and Carrot (Daucus carota L.) Yield and Quality

The Influence of Foliar Application of Biostimulant Atonik and Different Sources of Potassium on Full Sun and Partial Shade Salvia farinacea Plants

NUTRITION and some environmental variables play a major role in the growth and development of ornamental plants. Two pot experiments were carried out in a randomized complete block design to study the effect of foliar application of biostimulator agent (Atonik, 0.2%) and different sources of potassium viz. potassium sulphate (2g/L), potassium citrate (2g/L) and potassium humate (3g/L) on growth parameters and chemical constituents of Salvia farinacea plants grown under full sun and/or partial shade conditions (50 % shade) during 2014/15 and 2015/16 seasons. Foliar application of atonic and different sources of potassium enhanced growth, chlorophyll, total carbohydrates and mineral contents of plants grown in both environments. Under full sun, spraying plants with K humate gave the highest number of leaves and inflorescences as well as the highest biomass of fresh and dry leaves, while under partial shade, spraying plants with K citrate + atonik gave the highest values of these traits. Foliar application of K citrate + atonik gave the highest values of fresh and dry weight of inflorescences in both environments. Plants grown under partial shade conditions were superior in plant height and individual leaf area, while those grown under open field conditions were superior in stem diameter, number of leaves, branches, roots and inflorescences per plant, fresh and dry weight of leaves, stems, roots and inflorescences per plant as well as chlorophyll, total carbohydrates and mineral contents.

Plant Nutrient Status during Boll Development and Seed Cotton Yield as Affected by Foliar Application of Different Sources of Potassium

Bt cotton hybrids require large supply of metabolites to support their greater boll load and commonly suffer from premature leaf senescence. A field experiment was conducted to study the nutritional status of Bt cotton leaves during boll development stage and to evaluate the most profitable source of foliar fertilizers. Treatments included basal application of 0 and 60 kg·K2O·ha-1 as muriate of potash (MOP) in main plots and foliar spray treatments viz: 4 & 6 sprays of 2% potassium nitrate (Multi-K, 13-00-45), 4 & 6 sprays of NPK Blend (Polyfed, 19-19-19), 4 sprays of MOP, 4 sprays of MOP + urea (to supply same amount of N & K as in potassium nitrate) and unsprayed control in sub plots. The results revealed that only N and K contents of premature senesced leaves were below the sufficiency range for cotton sufficient levels of P, Fe, Mn, Zn and Cu were observed. Though the concentrations of N and K in both the petiole and leaf blade initially improved with foliar spray, N content declined below the unsprayed control at later stages. Basal application of MOP increased seed cotton yield by 19%. Four foliar sprays of KNO3, NPK, MOP and MOP + urea recorded yield increase in seed cotton yield of 22.8%, 22.4%, 18.5% and 24.5%, respectively over unsprayed control. Six sprays of KNO3 and NPK had no yield advantage over four sprays and rather proved economically less viable.

Growth and photosynthesis of salt‐stressed sunflower (Helianthus annuus) plants as affected by foliar‐applied different potassium salts

AbstractIn order to assess the effectiveness of foliar‐applied potassium (K+, 1.25%) using different salts (KCl, KOH, K2CO3, KNO3, KH2PO4, and K2SO4) in ameliorating the inhibitory effect of salt stress on sunflower plants, a greenhouse experiment was conducted. Sodium chloride (150 mM) was applied through the rooting medium to 18 d–old plants and after 1 week of salt treatment; different K+‐containing salts were applied twice in 1‐week interval as a foliar spray. Salt stress adversely affected the growth, yield components, gas exchange, and water relations, and also caused nutrient imbalance in sunflower plants. However, foliar‐applied different sources of potassium improved shoot and root fresh and shoot dry weights, achene yield, 100‐achene weight, photosynthetic rate, transpiration rate, stomatal conductance, water‐use efficiency, relative water content, and leaf and root K+ concentrations of sunflower plants grown under saline conditions. Under nonsaline conditions, improvement in shoot fresh weight, achene yield, 100‐achene weight, photosynthetic and transpiration rates, and root Na+ concentration was observed due to foliar‐applied different K sources. Of the different salts, K2SO4, KH2PO4, KNO3, and K2CO3 were more effective than KCl and KOH in improving growth and some key physiological processes of sunflower plants.

Composição química de tubérculos de batata para processamento, cultivados sob diferentes doses e fontes de potássio

A batata é considerada um dos poucos alimentos capazes de nutrir a crescente população mundial por ser fonte de energia e conter elevado teor de proteínas, vitaminas e minerais. Porém os teores desses compostos sofrem influência de diversos fatores como: cultivar utilizada, condições edafoclimáticas, safra, colheita e armazenamento. Assim, o presente trabalho teve como objetivo determinar a composição química de batatas (cvs. Atlantic, Asterix, Innovator e Shepody), cultivadas em quatro doses (0, 120, 360 e 1080 kg K2O.ha-1) e duas fontes de potássio (KCl e K2SO4). As amostras foram provenientes do município de Fazenda Rio Grande/PR, cultivadas na safra das águas. Foram realizadas as seguintes determinações: vitamina C, umidade, proteínas, lipídios, cinzas, carboidratos, energia, amido e potássio. A cv. Atlantic apresentou os maiores teores médios de cinzas (0,93%) e potássio (528,80 mg.100 g-1); a cv. Asterix, a maior umidade (81,47%); a cv. Innovator, os maiores teores de proteínas (2,25%), lipídios (0,06%), carboidratos (17,72%), energia (80,40 kcal.100 g-1) e amido (16,45%); e a cv. Shepody obteve a maior quantidade de vitamina C (31,01 mg.100 g-1). Pode-se concluir que a composição química das batatas é dependente da cultivar e da adubação potássica (dose e fonte) empregada.

Efeito de fontes de potássio na infestação de Bemisia tabaci biótipo B e nas características de frutos de tomateiro sob ambiente protegido

Bemisia tabaci (Gennadius) biótipo B é considerada a espécie de mosca- branca mais nociva à agricultura, pois é responsável por grandes perdas de comercialização e por baixos preços no mercado, principalmente na cultura do tomateiro. Dentre os fatores ambientais, a nutrição mineral pode influenciar a manifestação de resistência da planta em relação ao inseto. Objetivou-se avaliar a influência de diferentes fontes de potássio no tomateiro sobre a infestação de mosca-branca e as principais características dos frutos. O experimento foi realizado no Núcleo Experimental de Campinas (IAC), de dezembro de 1999 a maio de 2000. O híbrido Rocio foi cultivado em "slabs" contendo substrato agrícola, em condições de ambiente protegido. Foram utilizadas quatro soluções nutritivas com variação nas fontes de potássio: KCl + K2SO4 + K2SiO3; KCl + K2SO4; K2SO4 e KCl. Realizaram-se três avaliações do número de ovos + ninfas aos 15, 30 e 45 dias após a infestação com adultos de mosca-branca. Avaliaram-se, ainda, a produtividade e a qualidade dos frutos. Observa-se que as soluções nutritivas com base nas diferentes fontes de potássio não influenciaram a infestação de B. tabaci biótipo B; não se verificou diferença entre os tratamentos em relação à qualidade dos frutos e à produtividade para o híbrido Rocio, em condições de ambiente protegido.

Potassium sources and illitization in Texas Gulf Coast shale diagenesis

ABSTRACT The aim of this paper is to identify the controls on the rates of illitization in Texas Gulf Coast shales under diagenetic conditions. Two different mineral transformations are considered: the transformation of smectite to (nearly) illite and the precipitation of discrete illite, i.e., the formation of pure illite. Analyses of potassium feldspar and kaolinite abundance, in addition to K2O, Al2O3, and TiO2 contents, in shales from three wells are used to supplement published data in order to identify the mineral reactions responsible for the smectite-to-illite transformation in shales involving illite/smectite (I/S) mineral series. These data indicate that the first stage of the smectite-to-illite reaction in shales (R = 0 structures, ca. 0- 50% illite content) is controlled by the presence of feldspar and hence also by the dissolution kinetics of feldspar. The empirically derived activation energy for the first I/S transformation in shales is similar to that for K-feldspar dissolution. Kaolinite is not involved in this transformation in the shales investigated. The second stage of the reaction sequence (R = 1 structures, ca. 50- 100% illite content) occurs after potassium feldspar has largely or completely disappeared from the shale system. This indicates that the feldspar no longer controls the second stage of the smectite-to-illite transformation, and suggests another, external, source of potassium for the reaction in the shales. This assumption is supported by the relative increase of potassium content of the shales, at least in two of the three studied wells. Kaolinite does not seem to be involved either in this second stage of the I/S reaction sequence. The formation of discrete illite crystallites in shales is independent of the I/S transformation reactions and takes place only after a very significant period of time has elapsed. The slow rate of this reaction reflects the low activity of potassium in solutions that are in equilibrium with shale, in comparison with sandstones, where a rapid precipitation of pure illite can in some cases be observed. It is suggested that the different reactions in the smectite-to-illite transformation necessitate different sources of potassium either from within or outside an argillaceous whole-rock system. These different sources of potassium give rise to different rates for the I/S conversion reaction and the formation of illite.