Relevant bibliographies by topics / K fertilizer

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'K fertilizer'

Author: Grafiati
Published: 3 June 2025
Last updated: 31 July 2025

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Journal articles on the topic "K fertilizer"

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Wang, Manman, Youliang Ye, Xv Chu, et al. "Responses of Garlic Quality and Yields to Various Types and Rates of Potassium Fertilizer Applications." HortScience 57, no. 1 (2022): 72–80. http://dx.doi.org/10.21273/hortsci15984-21.

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Potassium (K) is a critical plant nutrient that determines quality in a myriad of crops and increases production yields. However, excessive application of various types of K fertilizers can decrease both the food quality and yields, which translates as economic losses and food safety issues. The objectives of this study were to 1) elucidate the impacts of different application rates of various K fertilizers on garlic, with the aim to identify the optimal and most economical K fertilizer dosage and 2) compare the effects of applying two common K fertilizers (KCl and K2SO4) on garlic, to determi
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Broschat, T. K., D. R. Sandrock, M. L. Elliott, and E. F. Gilman. "Effects of Fertilizer Type on Quality and Nutrient Content of Established Landscape Plants in Florida." HortTechnology 18, no. 2 (2008): 278–85. http://dx.doi.org/10.21273/horttech.18.2.278.

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In a series of three experiments, st. augustinegrass (Stenotaphrum secundatum ‘Floratam’), areca palm (Dypsis lutescens), canna (Canna × generalis ‘Richard Wallace’), pentas (Pentas lanceolata), allamanda (Allamanda cathartica ‘Hendersoni’), and nandina (Nandina domestica) were grown on highly leached sand soils in two locations in Florida. They were fertilized with typical turfgrass fertilizers having high nitrogen (N)-to-potassium (K) ratios and no magnesium (Mg), or several types of landscape palm fertilizers having low N:K ratios and 100% of their N, K, and Mg in controlled release form. S
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N’Dayegamiye, Adrien. "Response of silage corn and wheat to dairy manure and fertilizers in long-term fertilized and manured trials." Canadian Journal of Soil Science 76, no. 3 (1996): 357–63. http://dx.doi.org/10.4141/cjss96-043.

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Silage corn (Zea mays L.) and wheat (Triticum aestivum L.) were grown (1987–1991) in trials that had been manured and fertilized since 1978 to evaluate the effects of annual N, P, K and Mg fertilizers and dairy cattle manure on yields and nutrient uptake. Manure as the main factor was applied at 0 and 20 Mg ha−1 on a wet-weight basis. The subplots consisted of six fertilizer treatments: NK, PK, NP, NPK, NPKMg and the unfertilized control. For silage corn, fertilizer rates were 150, 100, 150 and 40 kg ha−1 N, P2O5, K2O and Mg, respectively. Fertilizer rates for wheat were 80, 100, 120 and 40 kg
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Broschat, Timothy K. "1032 EFFICIENCY OF FERTILIZATION METHODS ON ORNAMENTALS." HortScience 29, no. 5 (1994): 576c—576. http://dx.doi.org/10.21273/hortsci.29.5.576c.

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Spathiphyllum Schott. 'Mauna Loa Supreme' grown for 6 months in a fine sand soil or a 5 pine bark: 4 sedge peat: 1 sand medium (by volume) were fertilized with 7.6g N, 1.4g P, and 4.5g K/3.5-liter container by 4 different methods. The same raw fertilizer prills (21N-3P-12K) were applied weekly as a liquid, monthly as soluble granules, bimonthly as a lightly resin-coated fertilizer (Osmocote), or every 6 months as a heavily resin-coated fertilizer. All leachates were collected and were measured and analyzed weekly for N O3, PO4, and K. Spathiphyllum grew best in the sand soil with either of the
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Chu, Haiyan, Takeshi Fujii, Sho Morimoto, et al. "Community Structure of Ammonia-Oxidizing Bacteria under Long-Term Application of Mineral Fertilizer and Organic Manure in a Sandy Loam Soil." Applied and Environmental Microbiology 73, no. 2 (2006): 485–91. http://dx.doi.org/10.1128/aem.01536-06.

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ABSTRACT The effects of mineral fertilizer (NPK) and organic manure on the community structure of soil ammonia-oxidizing bacteria (AOB) was investigated in a long-term (16-year) fertilizer experiment. The experiment included seven treatments: organic manure, half organic manure N plus half fertilizer N, fertilizer NPK, fertilizer NP, fertilizer NK, fertilizer PK, and the control (without fertilization). N fertilization greatly increased soil nitrification potential, and mineral N fertilizer had a greater impact than organic manure, while N deficiency treatment (PK) had no significant effect. A
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Najm, Sahar Hamza, and Hayyawi Wewa Attia Al-Juthery. "Effect of Phosphorous, Potassium Nano-Fertilizers and Spraying of (Sepehr 4) Nano-Fertilizer and Carbon Nanotubes on the Growth and Yield of Rice (Oryza sativa L.)." IOP Conference Series: Earth and Environmental Science 1259, no. 1 (2023): 012016. http://dx.doi.org/10.1088/1755-1315/1259/1/012016.

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Abstract The purpose of this experiment is to compare the growth and yield of the Amber 33 cultivar of rice after being fertilised with nano-phosphorous and nano-potassium, as well as after being sprayed with carbon nanotubes and nano-synthetic fertiliser (Sepehr 4) (K+Fe+Zn+Mn). Between June 15 and November 23, 2022, researchers in Babylon province, Iraq, combed through the area known as District 41-Al-Hussainiya, which is located to the south of the city of Hilla. Using a Randomised Complete Blocks Design (RCBD), two levels of phosphorus and potassium nano-fertilizers (0 and 10 kg.ha-1) were
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Petrus, Auldry Chaddy, Osumanu Haruna Ahmed, Ab Majid Nik Muhamad, Hassan Mohammad Nasir, and Make Jiwan. "Effect of K-N-Humates on Dry Matter Production and Nutrient Use Efficiency of Maize in Sarawak, Malaysia." Scientific World JOURNAL 10 (2010): 1282–92. http://dx.doi.org/10.1100/tsw.2010.121.

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Agricultural waste, such as sago waste (SW), is one of the sources of pollution to streams and rivers in Sarawak, particularly those situated near sago processing plants. In addition, unbalanced and excessive use of chemical fertilizers can cause soil and water pollution. Humic substances can be used as organic fertilizers, which reduce pollution. The objectives of this study were to produce K- and ammonium-based organic fertilizer from composted SW and to determine the efficiency of the organic-based fertilizer produced. Humic substances were isolated using standard procedures. Liquid fertili
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Khoirya, Dinna, Nanik Setyowati, Zainal Muktamar, Kartika Utami, Marwanto, and Sumardi. "Utilizing Melastoma Compost (Melastoma malabatrichum L.) as a Sustainable Alternative to Synthetic Nitrogen Fertilizers in Shallot Cultivation." International Journal of Plant & Soil Science 37, no. 2 (2025): 170–79. https://doi.org/10.9734/ijpss/2025/v37i25316.

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Aims: This study explores the potential of Melastoma compost (Melastoma malabatrichum L.) as a sustainable alternative to synthetic nitrogen fertilizers in shallot (Allium ascalonicum L.) cultivation. Study Design: This study was conducted from July to October 2024 at the Green House of the Department of Crop Production, Faculty of Agriculture, Bengkulu University, Indonesia, at an altitude of 10 meters above sea level. Methodology: The experimental design was a Completely Randomized Design (CRD) with six treatments, each treatment was repeated 4 times. The treatments were: P0: No fertilizer;
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Maynard, Elizabeth T., Wenjing Guan, Petrus Langenhoven, and Lori Hoagland. "Tomato Seedling Performance in Five Commercial Organic Growing Media with and without Supplemental Fertilizer." HortTechnology 35, no. 4 (2025): 455–69. https://doi.org/10.21273/horttech05594-24.

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Commercially available growing media permitted for use in certified organic production differ substantially in quantity and availability of essential macronutrients. Nutrient availability from fertilizers applied during production will depend on chemical, biological, and physical characteristics of both media and fertilizers; therefore, best practices for fertilizing seedlings are likely to differ. This study evaluated tomato (Solanum lycopersicum L.) emergence, seedling growth, and posttransplant performance when grown in five organic growing media with and without supplemental fertilizer dur
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Rahutomo, Suroso, and Eko Noviandi Ginting. "LEACHING LEVEL OF N, P, K, AND SEVERAL TYPES OF FERTILIZER." Jurnal Penelitian Kelapa Sawit 26, no. 1 (2018): 37–47. http://dx.doi.org/10.22302/iopri.jur.jpks.v26i1.35.

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A study to compare amount of N, P, K, and Mg leached from fertilizers had been conducted. Leaching was measured using percolator tubes for six months. Subsoil of Inceptisol collected from an oil palm plantation in North Sumatra was used to fill the tube. Treatments were application of briquette compound fertilizer, granular compound fertilizer, and single fertilizer; all types of fertilizers contained equal amount of N, P, K, and Mg. The results showed that higher amount of leached N, P, and K were found under application of single fertilizers (urea, Triple Super Phosphate/TSP, and Muriate of
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Dissertations / Theses on the topic "K fertilizer"

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Ervin, Clara Ray. "Poultry Litter Ash as an Alternative Fertilizer Source for Corn." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/103199.

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Poultry litter ash (PLA) is a co-product from manure-to-energy systems that originated in response to increased poultry litter (PL) volumes generated in concentrated poultry production regions. Investigating PLA as a crop fertilizer is an alternative solution to balancing poultry and crop regional nutrient cycling in the Commonwealth of Virginia. As the expanding world population places pressure on the poultry industry to meet consumption demands, increased PL production presents an obstacle to identify alternative uses for increased volumes. Currently, Virginia produces 44 million broilers wi
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Rodrigues, Dayane Francine. "Revegetação de Taludes com Solo Decapeado no Planalto Catarinense." Universidade do Estado de Santa Catarina, 2016. http://tede.udesc.br/handle/handle/2492.

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Submitted by Claudia Rocha (claudia.rocha@udesc.br) on 2018-03-08T14:08:25Z No. of bitstreams: 1 PGCS17MA161.pdf: 277204 bytes, checksum: 295ae0923cdfa15e00efc516619613f4 (MD5)<br>Made available in DSpace on 2018-03-08T14:08:25Z (GMT). No. of bitstreams: 1 PGCS17MA161.pdf: 277204 bytes, checksum: 295ae0923cdfa15e00efc516619613f4 (MD5) Previous issue date: 2016-12-21<br>Capes<br>The revegetation of degraded areas is a fundamental recovery strategy to improve the physical and chemical attributes of the soils, besides providing through the vegetation cover, the necessary protection to reduce
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Martins, Priscila Oliveira. "Eficiência de fontes, dinâmica do magnésio no solo sob a cultura do café no Brasil e comparação da análise de K, Ca e Mg em solos do Arkansas-EUA seco em estufa e úmido de campo." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/11/11140/tde-09052016-180755/.

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A cultura do café no Brasil tem apresentado frequente deficiência de magnésio (Mg) limitando sua produtividade, portanto faz-se necessário o estudo de fontes que contenham Mg para essa cultura. Por outro lado, o estudo das metodologias de análise de K, Ca e Mg no solo é um outro ponto que precisa ser estudado para melhor manejo da fertilidade do solo e recomendação de adubações. Objetivou-se com o primeiro experimento avaliar a eficiência de fontes de magnésio para a cultura do café e a dinâmica deste nutriente no perfil do solo. E com o experimento desenvolvido em Arkansas-EUA, avaliar as cor
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Rajabipour, Ali. "Effects of Ca, K and water table depth on tomato mechanical properties." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=39984.

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Two series of tests were performed in summer 1993 and repeated in summer 1994 to investigate effects of potassium, calcium and water table depth on mechanical properties of tomato fruit. In the first group of tests five mechanical properties stress, strain, ER (ratio of stress to strain at break), energy and toughness were calculated from the force-deformation curve obtained by compression of pericarp disks taken from tomato fruits (cv New Yorker) at the breaker stage. In the second group of tests force, deformation and energy were obtained from puncture tests on whole tomato fruit. The textur
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Casarini, Edivaldo. "Doses de N e K aplicados via fertirrigação na cultura da roseira (Rosa sp.) em ambiente protegido." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/11/11143/tde-16122004-163854/.

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A fertirrigação em rosas é uma técnica bastante utilizada pelos produtores de flores. O nitrogênio e o potássio são os nutrientes mais exigidos nas distintas fases da cultura, onde a aplicação de quantidades corretas aumenta a produtividade e a qualidade das flores. Com o objetivo foi avaliar a produtividade e a qualidade das hastes florais na cultura da roseira, cultivar “Versilha”, em ambiente protegido conduziu-se um experimento na área experimental do Departamento de Engenharia Rural da ESALQ/USP, localizado no município de Piracicaba, SP, entre os meses de novembro/2002 a setembro/2003. O
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Al, Ibrahim Ali. "Contribution à l'amélioration de la fertilité des sols dynamique interfoliaire de NH⁺ et K⁺ dans une vermiculite /." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37606044f.

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Biasioli, Gustavo Marques. "Influência do pH e da força iônica na liberação de fósforo de compostos do tipo Fe - K - P presentes em superfosfatos." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/11/11140/tde-20102003-155618/.

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Compostos de fósforo insolúveis em água, como os do tipo Fe – K – P podem ser formados em fertilizantes fosfatados totalmente acidulados (FFTA). Em superfosfatos dois dos mais comuns são os compostos Fe3KH8(PO4)6.6H2O (H8) e Fe3KH14(PO4)8.4H2O (H14). Elevadas quantidades de rocha fosfática são descartadas a fim de garantir que FFTA apresentem na fração citrato neutro de amônio (CNA) + água, 90% de P2O5 solúvel em CNA, como prevê a legislação brasileira de fertilizantes. Experimentos anteriores mostraram que os FFTA não necessitam, obrigatoriamente, conter alta solubilidade em água. Estu
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Hunsaker, Heather Mae. "Predicting Maize Yield, Nutrient Concentration and Uptake in P and K Fertilized Soils: Pressurized Hot Water and Other Alternatives to Mehlich I Extraction in Guatemala Soils." BYU ScholarsArchive, 2006. https://scholarsarchive.byu.edu/etd/941.

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The inaccessibility and cost of soil testing reduce effectiveness of fertilizer use on small-scale subsistence farms, and inadequate funding promotes adoption of soil tests in developing countries with minimal validation. For example, Mehlich-I extraction of phosphorus (P) currently used extensively in Guatemala may not be suitable for its broad range of soils. At least four alternatives are available but are relatively untested [Bray 1, Mehlich III, Olsen and pressurized hot water (PHW)]. Pressurized hot water is relatively simple and inexpensive, but is not yet tested against other extractio
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Tarragó, Abella Elena. "Assessment of struvite and K-struvite recovery from digested manure." Doctoral thesis, Universitat de Girona, 2018. http://hdl.handle.net/10803/663399.

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Human population has had an impact on the natural phosphorus’ cycle, a limited resource, and the predictions show that this resource could be exhausted in 100-250 years. Therefore, the actions for the coming 10-25 years must be focus on the recovery of phosphorus, for example, from renewable sources such as manure. Thus, phosphorus recovery as struvite or K-struvite from manure is investigated, as the recovery of the essential nutrients is considered to be a significant breakthrough for assuring long-term and economical phosphorus supply, while recovering a valuable slow-release fertilizer.
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Bedin, Flavia Chiamulera Borsatti. "Espectroscopia no infravermelho próximo para avaliação dos teores de N, P, K E C em cama de aviário." Universidade Tecnológica Federal do Paraná, 2017. http://repositorio.utfpr.edu.br/jspui/handle/1/2370.

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A indústria avícola apresenta a maior participação e as maiores taxas de crescimento na agroindústria mundial, sendo o Brasil um dos principais produtores deste segmento pois, é o segundo maior produtor mundial de carne de frango e o maior exportador deste produto. Porém, à medida que a produção de frango aumenta, a quantidade de resíduos oriundos da atividade cresce simultaneamente e, a necessidade de alcançar um novo patamar de conhecimento, inserindo este nicho de produção também como matéria-prima a outras atividades e geração de renda. Assim, a utilização dos resíduos orgânicos de aviário
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Books on the topic "K fertilizer"

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Neeteson, J. J. Assessment of optimum application rates of fertilizer K on the basis of response curves. Instituut voor Bodemvruchtbarheid, 1989.

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Colloquium, International Potash Institute. Development of K-Fertilizer recommendations: 22nd Colloquium of the International Potash Institute, Soligorsk, USSR, June 18-23, 1990. International Potash Institute, 1990.

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Colloquium, International Potash Institute. Development of K-fertilizer recommendations: 22nd Colloquium of the International Potash Institute, Soligorsk, USSR, June 18-23, 1990. The Institute, 1990.

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Colloquium, International Potash Institute. Development of K-fertilizer recommendations: 22nd Colloquium of the International Potash Institute, Soligorsk, USSR, June 18-23, 1990. Internaitonal Potash Institute, 1990.

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Colloquium, International Potash Institute. Development of K-fertilizer recommendations: 22nd Colloquium of the International Potash Institute, Soligorsk, USSR, June 18-23, 1990. Internaitonal Potash Institute, 1990.

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Goh, Kah Joo. K nutrition for mature oil palm in Malaysia. International Potash Institute, 1994.

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Haile, Wassie. Potential of Erythrina brucei, Erythrina abyssinica and Ensete venticosum as organic sources of N P K on small holder fields in southern Ethiopia. United Nations University, Institute for Natural Resources in Africa (UNU-INRA), 2013.

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Colloquium, International Potash Institute. Methods of K-research in plant. The Institute, 1989.

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Colloquium, International Potash Institute. Methods of K-research in plant. The Institute, 1989.

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Regional, Symposium on K.-Availability in Soils of West Asia and North Africa (1993 Tehran Iran). K availability of soils in West Africa and North Africa: Status and perspectives. International Potash Institute, 1997.

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Book chapters on the topic "K fertilizer"

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Bell, Michael J., Antonio P. Mallarino, Jeff Volenec, Sylvie Brouder, and David W. Franzen. "Considerations for Selecting Potassium Placement Methods in Soil." In Improving Potassium Recommendations for Agricultural Crops. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-59197-7_12.

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AbstractPlacement strategies can be a key determinant of efficient use of applied fertilizer potassium (K), given the relative immobility of K in all except the lightest textured soils or high rainfall environments. Limitations to K accessibility by plants caused by immobility in the soil are further compounded by the general lack of K-stimulated root proliferation in localized soil zones enriched with K alone, compared with root proliferation due to concentrated N and P. Further, effects of K fixation reactions in soils with certain clay mineralogies and the declining concentration and activi
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Rosolem, Ciro A., Antonio P. Mallarino, and Thiago A. R. Nogueira. "Considerations for Unharvested Plant Potassium." In Improving Potassium Recommendations for Agricultural Crops. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-59197-7_6.

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AbstractPotassium (K) is found in plants as a free ion or in weak complexes. It is easily released from living or decomposing tissues, and it should be considered in fertilization programs. Several factors affect K cycling in agroecosystems, including soil and fertilizer K contributions, plant K content and exports, mineralization rates from residues, soil chemical reactions, rainfall, and time. Soil K+ ions can be leached, remain as exchangeable K, or migrate to non-exchangeable forms. Crop rotations that include vigorous, deep-rooted cover crops capable of exploring non-exchangeable K in soi
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Mikkelsen, Robert L., and Terry L. Roberts. "Inputs: Potassium Sources for Agricultural Systems." In Improving Potassium Recommendations for Agricultural Crops. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-59197-7_2.

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AbstractIn the potassium (K) cycle, inputs encompass all K sources that move into a given volume of soil. These inputs may include atmospheric deposition, irrigation water, runoff, erosion, as well as seeds, cuttings, and transplants. Accounting for all inputs is seldom routinely done on the farm. Many K inputs have variable concentrations, making estimations difficult. Estimates for added K are provided in some planning documents and can be used where testing of on-farm inputs is not feasible, although testing is preferred. Standard commercial fertilizers have known concentrations of K and ar
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Bell, Michael J., Michel D. Ransom, Michael L. Thompson, et al. "Considering Soil Potassium Pools with Dissimilar Plant Availability." In Improving Potassium Recommendations for Agricultural Crops. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-59197-7_7.

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AbstractSoil potassium (K) has traditionally been portrayed as residing in four functional pools: solution K, exchangeable K, interlayer (sometimes referred to as “fixed” or “nonexchangeable”) K, and structural K in primary minerals. However, this four-pool model and associated terminology have created confusion in understanding the dynamics of K supply to plants and the fate of K returned to the soil in fertilizers, residues, or waste products. This chapter presents an alternative framework to depict soil K pools. The framework distinguishes between micas and feldspars as K-bearing primary mi
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Kuang, Enjun, Baoguo Zhu, Jiuming Zhang, et al. "Optimized Fertilization’s Beneficial Impact on Soil Nutrient Levels and Its Influence on the Principal Agronomic Traits of Maize." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-4355-1_23.

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AbstractThe soil nutrients, main agronomic indexes, and key yield factors during the maize growth period were studied by using a nutrient expert system to recommend optimal fertilization. The results showed that the fertilizer application had a significant impact on the growth and yield formation of maize, especially the N fertilizer application. N deficiency in maize seriously affected the yield and its component factors, while P and K deficiency had no significant effect on decreasing maize yield. The optimized fertilization treatment (NE) significantly reduced the bald tip length and increa
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White, Philip J., Michael J. Bell, Ivica Djalovic, Philippe Hinsinger, and Zed Rengel. "Potassium Use Efficiency of Plants." In Improving Potassium Recommendations for Agricultural Crops. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-59197-7_5.

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AbstractThere are many terms used to define aspects of potassium (K) use efficiency of plants. The terms used most frequently in an agricultural context are (1) agronomic K use efficiency (KUE), which is defined as yield per unit K available to a crop and is numerically equal to the product of (2) the K uptake efficiency (KUpE) of the crop, which is defined as crop K content per unit K available and (3) its K utilization efficiency (KUtE), which is defined as yield per unit crop K content. There is considerable genetic variation between and within plant species in KUE, KUpE, and KUtE. Root sys
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Volenec, Jeffrey J., Sylvie M. Brouder, and T. Scott Murrell. "Broadening the Objectives of Future Potassium Recommendations." In Improving Potassium Recommendations for Agricultural Crops. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-59197-7_14.

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AbstractPotassium (K) fertilizer recommendations for annual crops in the USA are generally founded in soil test results. The goal of this chapter is to highlight additional plant-related traits that may impact crop responses to K fertilization. This includes the role of tissue testing, the influence of luxury consumption, genetic improvement of K use efficiency, genotype × environment × management interactions on K uptake and yield, response to foliar K fertilization, intraplant K cycling, fungal associations and K uptake, the influence of K on crop quality, and the role of K in abiotic stress
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Aziz, Amir, Noor-us-Saba, Mukkram Ali Tahir, et al. "Effect of Mulches on Mineral Fertilizer (N, P & K) Management and Fertilizer Use Efficiency." In Mulching in Agroecosystems. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-6410-7_1.

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DeJong, T. M. "Uptake and assimilation of nutrient resources." In Concepts for understanding fruit trees. CABI, 2022. http://dx.doi.org/10.1079/9781800620865.0003.

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Abstract Fruit trees require six macronutrients (N, P, K, calcium, Mg and sulfur) and eight micronutrients (Zn, Fe, B, Mn, Cu, chlorine, nickel and molybdenum) that are taken up through the roots. Many of these occur naturally in the soil as cations bound to negatively charged soil particles, while others are dissolved in the liquid surrounding the soil particles in the form of anions. This chapter discusses the uptake and assimilation of nutrient resources in fruit trees. Tabulated data are given on mean annual N, P and K storage (kg/ha) in perennial organs of mature almond trees that receive
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Singh, V. K., B. S. Dwivedi, S. S. Rathore, R. P. Mishra, T. Satyanarayana, and K. Majumdar. "Timing Potassium Applications to Synchronize with Plant Demand." In Improving Potassium Recommendations for Agricultural Crops. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-59197-7_13.

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AbstractPotassium (K) demand by crops is almost as high as that of nitrogen (N) and plays a crucial role in many plant metabolic processes. Insufficient K application results in soil K mining, deficiency symptoms in crops, and decreased crop yields and quality. Crop K demands vary with crop types, growth patterns, nutrient needs at different physiological stages, and productivity. Science-based K application in crops needs to follow 4R Nutrient Stewardship to ensure high yield, improved farm income, and optimum nutrient use efficiency. Studies around the world report widespread K deficiency, r
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Conference papers on the topic "K fertilizer"

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Soufan, Raghad, Antoine Karam, and Ahmed Aajjan. "PHYTOSTABLIZATION OF SULPHIDE MINE TAILINGS." In 24th SGEM International Multidisciplinary Scientific GeoConference 2024. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024/3.1/s13.33.

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Orphaned or abandoned sulphide tailing disposal sites pose significant environmental hazards, including eolian dispersion, water erosion, acid mine drainage, and heavy metal mobility. Phytostabilization, an eco-friendly strategy, entails the use of alkaline amendments alongside non-native plant species capable of thriving in environments with high concentrations of heavy metals. A greenhouse experiment was conducted to assess the effect of a commercial cement which contained 46.3% sand, applied alone or combined with three magnesium (Mg) reagents on the shoot dry yield (DMY) of ryegrass (Loliu
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Kolencik, Marek, David Ernst, Martin Sebesta, Viktor Straka, and Luba Durisova. "IMPACT OF COLLOIDAL PROPERTIES OF PHOSPHORUS-BASED NANOFERTILIZERS IN FOLIAR APPLICATION ON PRODUCTION PARAMETERS, PHYSIOLOGY, AND MINERAL NUTRIENT CONTENT OF SUNFLOWER." In SGEM International Multidisciplinary Scientific GeoConference 24. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024/6.1/s24.16.

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In contemporary agricultural practice, ensuring sufficient bioavailable macronutrients, particularly phosphorus, for plants in phosphorus-deficient soils remains a significant challenge. As a promising alternative, the application of phosphate-calcium-based nanofertilizers (NFs), with or without zinc, emerges as a suitable solution, offering targeted effects through foliar dispersion. However, current knowledge gaps persist regarding the development and colloidal properties of applied NFs and their impact on sunflower (Helianthus annuus L.), a globally significant oilseed crop known for its br
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Nivethithan, T., and KAPM Ariyawansha. "Identification of Potential Minerals/Rocks in Sri Lankan Geological Terrain as Source of Potassium (K) Fertilizer." In International Symposium on Earth Resources Management & Environment. Department of Earth Resources Engineering, University of Moratuwa, Sri Lanka, 2022. http://dx.doi.org/10.31705/iserme.2022.7.

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Due to the agricultural intensification in Sri Lanka, there is a high demand for potassium (K)-fertilizer inputs. However, in the Sri Lankan geological setting, the presence of major potash sources is minimum though the K- bearing minerals and rocks are abundant. Therefore, exploration of K-bearing mineral deposits is essential to cater the demand of K-fertilizer in the country. In this regard, this research is focused on investigating the K-bearing minerals and rocks in Sri Lankan geological terrain which can be used as K-fertilizers directly or as alternatives for currently available K-ferti
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Kozlovskaya, V. F. "Prospects for the rhizosphere microorganisms integration into agricultural practice as biofertilizers." In CURRENT STATE, PROBLEMS AND PROSPECTS OF THE DEVELOPMENT OF AGRARIAN SCIENCE. Federal State Budget Scientific Institution “Research Institute of Agriculture of Crimea”, 2020. http://dx.doi.org/10.33952/2542-0720-2020-5-9-10-141.

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Chemical fertilizers are a quick way to increase nutrients in the soil, but their use is economically costly and dangerous for the environment. Plant Growth Promoting Bacteria (PGPB) are able to increase the bioavailability of fertilizers through biological nitrogen (N) fixation, as well as potassium (K), phosphorus (P), and zinc (Zn) solubilization. The enhanced amount of soluble macro- and microelements in the close proximity of soil-root interface increases the fertilizer use efficiency ~ by 20-40 %.
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R, Surya, and Sukanya S. T. "Gradient Boosting and Naive Bayes Crop Yield Prediction and Fertilizer Recommendation." In The International Conference on scientific innovations in Science, Technology, and Management. International Journal of Advanced Trends in Engineering and Management, 2023. http://dx.doi.org/10.59544/puyi9607/ngcesi23p11.

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Farmers use Big Data to get information on changing Weather, Rainfall, Fertilizer Usage, Rainfall, and other factors that impact the crop yield. The yield of a crop is mainly determined by the climatic conditions like Temperature, Rainfall, Soil Conditions, and Fertilizers. All of this information assists farmers in making accurate and dependable decisions that maximize their productivity from cultivating the land. Recently, the Machine Learning Algorithms are used by the researchers to predict the yield of a crop before its actual cultivation. Firstly, Pre-process the data in a Python environ
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Hellmann, Roland. "Converting K-feldspar to Potassium Fertilizer with a Green Chemistry Approach." In Goldschmidt2022. European Association of Geochemistry, 2022. http://dx.doi.org/10.46427/gold2022.11434.

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Hotta, Kenji, Rafael D. Guerrero, Luzviminda A. Guerrero, and Kyoichi Okamoto. "A Study on the Use of Ocean Fertilizer for Culture of Seaweed." In ASME 2004 23rd International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2004. http://dx.doi.org/10.1115/omae2004-51613.

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The use of ocean fertilizer containing 20% ferrous sulfate, for the culture of the red alga, K. appaphycus alvarezii, in 50 m2 floating raft was evaluated. Two levels of fertilizer application, 1 and 2 kg.wk−1, for a culture period of 60 days were tested. The efficiency of the fertilizer application using perforated plastic bags attached to the rafts was determined. The cost-effectiveness of the use of the fertilizer was also analyzed. Results showed that the application of ocean fertilizer at 2 kg.wk−1 gave the highest net yield of the seaweed that was 30% more than that of the control. The m
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Sharkov, I. "THE BASIC PRINCIPLES OF SOIL FERTILITY MANAGEMENT IN THE CULTIVATION OF GRAIN CROPS USING INTENSIVE TECHNOLOGIES IN SIBERIA." In «PROBLEMS OF SOIL FERTILITY IN MODERN AGRICULTURE». Krasnoyarsk Scientific Research Institute of Agriculture is a separate division of the Federal Research Center KSC SB RAS, 2024. http://dx.doi.org/10.52686/9785605087878_20.

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intensive technologies are oriented to obtaining maximum crop yields. In an optimal economic system in the agricultural sector, such yields should provide farms with maximum profit. Application of intensive technologies is rendered difficult by unpredictable weather conditions. To reduce the damage, we propose a balance method of determining fertilizer doses, based on the establishment of the minimum content of N, P and K forms available to plants in the soil, at which the application of fertilizers in the mode of compensation for the alienation of elements from the field will provide maximum
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Čolović, Vladimir, Bogdan Garalejić, Helena Majstorović, Maja Sudimac, and Miloš Pavlović. "TAČNOST FORMULACIJE I EKOLOŠKI ASPEKT NEKIH MINERALNIH ĐUBRIVA." In XXVII savetovanje o biotehnologiji. University of Kragujevac, Faculty of Agronomy, 2022. http://dx.doi.org/10.46793/sbt27.425c.

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When buying mineral fertilizer, the user expects that the content of nutrients is in the prescribed minimum values indicated on the packaging and in the declaration and that the quality of used raw materials does not have a negative impact on the environment. The analysis of a number of samples of mineral fertilizers of different quantities and ratios N, P, K showed deviations from the minimum values of nutri-ent content from the declaration as well as increased content of certain heavy metals. For that reason, it is necessary that analyzes of manufactured and imported formulations are more of
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Behrendt, A., J. Pickert, F. Eulenstein, and B. Kroschewski. "Impact of Type of K Fertilizer on DCAD of Fen Grassland in Northeast Germany." In XXV International Grassland Congress. International Grassland Congress 2023, 2023. http://dx.doi.org/10.52202/071171-0100.

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Reports on the topic "K fertilizer"

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Litaor, Iggy, James Ippolito, Iris Zohar, and Michael Massey. Phosphorus capture recycling and utilization for sustainable agriculture using Al/organic composite water treatment residuals. United States Department of Agriculture, 2015. http://dx.doi.org/10.32747/2015.7600037.bard.

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Objectives: 1) develop a thorough understanding of the sorption mechanisms of Pi and Po onto the Al/O- WTR; 2) determine the breakthrough range of the composite Al/O-WTR during P capturing from agro- wastewaters; and 3) critically evaluate the performance of the composite Al/O-WTR as a fertilizer using selected plants grown in lysimeters and test-field studies. Instead of lysimeters we used pots (Israel) and one- liter cone-tainers (USA). We conducted one field study but in spite of major pretreatments the soils still exhibited high enough P from previous experiments so no differences between
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