Effect of potassium sources and rates on arabica coffee yield, nutrition, and macronutrient export

Mancuso, Mauricio Antonio Cuzato; Soratto, Rogério Peres; Crusciol, Carlos Alexandre Costa; Castro, Gustavo Spadotti Amaral

doi:10.1590/s0100-06832014000500010

Cited by 43 publications

(50 citation statements)

References 8 publications

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“…Increased availability of Si favors increased productivity, since Si can act indirectly in photosynthetic and biochemical processes, especially when the plant is subjected to some type of stress [32]. The translocation of silicon from the roots to the aerial part of plants may be related to the increase in photosynthetic capacity, greater resistance to possible damage and reduction in the evapotranspiration process, which, consequently, improves the use of available water in the soil [33]. Calcareous: y = 0,0081x-0,2204 (R 2 =0,96) Calcium silicate: y = 0,0084x-0,3453 (R 2 =0,96) The increase in CO 2 concentration inside leaves promotes the closure of stomata, which may occur in response to a biotic stress [34].…”

Section: Resultsmentioning

confidence: 99%

Fertilization with Silicon in Sweet Pepper Improved Plants Grown under Salt Stress

Dias

Marques

Bianchini

2019

JEAI

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Aims:The objective of this research was to investigate the effect of calcium silicate on gaseous exchanges and production factors in the sweet pepper, cultivated under conditions of soil salinity induced by potassium fertilization, in protected cultivation. Study Design: The experiment was arranged in a randomized complete block design in a 2 × 5 factorial scheme with five replications. Place and Duration of Study: The experiment was conducted in the sector of Olericultura and Experimentation of the course of Agronomy from October 12, 2018 to February 2019. Methodology: The experiment was arranged in a randomized complete block design in a 2 × 5 factorial scheme (two sources of correction: calcareous and silicon and five increasing rates of KCl equivalent to 150, 300, 450, 600 and 700 kg ha -1 of K 2 O). Ten treatments with five replicates where each experimental unit consisted of a polyethylene pot, with a volume of 19 dm 3 . The electrical conductivity, the determination and quantification of silicon in soil and plant, liquid photosynthesis, stomatal conductance, intercellular CO 2 concentration, transpiration, water use efficiency and instantaneous carboxylation efficiency were analyzed. Dias et al.; JEAI, 40(2): 1-12, 2019; Article no.JEAI.50539 2 Results: With the increase of K 2 O in the soil there was a tendency of reduction in liquid photosynthesis, transpiration, stomatal conductance, intercellular CO 2 concentration, water use efficiency and instantaneous carboxylation efficiency in the presence and absence of calcium silicate. Higher rates of K 2 O (300, 450 and 600 kg ha -1 ) reduced the length and yield of sweet pepper fruits in the presence and absence of calcium silicate. The rate of 150 Kg K 2 O favored the growth of sweet pepper plants in the presence of calcium silicate. Conclusion: It is concluded from the research that the dose of 300 kg ha -1 of K 2 O, in the presence of calcium silicate, provided the best results for the electrical conductivity of 2.76 dS m -1 , silicon content in the soil of 5.70 mg kg -1 , 14% silicon leaf content, improving photosynthetic rates, transpiration, water use efficiency and fruit production. The increase in salinity reduced fruit yield, in the presence and absence of Si. Original Research Article

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Section: Resultsmentioning

confidence: 99%

Fertilization with Silicon in Sweet Pepper Improved Plants Grown under Salt Stress

Dias

Marques

Bianchini

2019

JEAI

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“…Selain itu, unsur K juga berperan dalam reproduksi tanaman kopi, terutama pada hasil dan ukuran biji (Clemente et al, 2013), menentukan kualitas citarasa dengan mengaktifkan enzim polifenol oksidase serta menentukan kandungan kafein dan fenol dalam biji kopi (Gonthier, Witter, Spongberg, & Philpott, 2011;Clemente et al, 2013;Mancuso, Soratto, Crusciol, & Castro, 2014;Clemente, Martinez, Alves, Finger, & Cecon, 2015).…”

Section: Korelasi Ketinggian Tempat Dengan Sifat Kimia Tanahunclassified

Korelasi Antara Ketinggian Tempat, Sifat Kimia Tanah, dan Mutu Fisik Biji Kopi Arabika di Dataran Tinggi Garut

Supriadi

Randriani

Towaha

2016

J. Tanaman Industri dan Penyegar

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ABSTRAKKetinggian tempat mempengaruhi unsur-unsur iklim yang akan berdampak terhadap sifat kimia tanah. Pertumbuhan, produktivitas, mutu, dan citarasa kopi ditentukan oleh beberapa faktor, salah satunya sifat kimia tanah. Tujuan penelitian adalah menganalisis korelasi antara ketinggian tempat, sifat kimia tanah, dan mutu fisik biji kopi Arabika di dataran tinggi Kabupaten Garut. Penelitian dilakukan di dataran tinggi Kabupaten Garut, Provinsi Jawa Barat, mulai bulan April sampai Agustus 2014. Penelitian menggunakan metode survei dengan pemilihan lokasi dan ketinggian tempat secara purposive serta pengambilan sampel tanah dan biji kopi secara acak di masing-masing lokasi. Parameter yang diamati adalah sifat kimia tanah, persentase biji normal, dan berat biji kopi Arabika pada ketinggian tempat 1.000-1.600 m dpl. Data dianalisis menggunakan korelasi. Hasil penelitian menunjukkan korelasi yang nyata antara ketinggian tempat dengan beberapa sifat kimia tanah dan mutu fisik biji kopi Arabika di dataran tinggi Garut. Semakin tinggi tempat maka semakin meningkat pula sifat kimia tanah seperti pH, C-organik, N-total, Na, dan KTK, tetapi sebaliknya untuk P 2 O 5 total. Meningkatnya tinggi tempat dan beberapa sifat kimia tanah tersebut seiring dengan meningkatnya pula persentase biji normal dan berat 100 biji kopi Arabika.

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“…In the second crop the KCl treatment promoted the highest K absorption (142.5 mg/pot) differing from the other treatments that accumulated about 95.6 to 109.6 mg/pot. Mancuso et al (2014) studied coffee plant nutrition and fertilization efficiency under phonolite rock powder concluded that rock powder can be used as a nutrient source, proving efficient for K supply to coffee.…”

Section: Dry Matter (Dm)mentioning

confidence: 99%

Calcined nepheline syenite powder increases potassium availability to corn

et al. 2019

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This research evaluated powdered nepheline syenite (NS) as a potassium source for corn. The treatments were different particle sizes and heating the NS with calcium chloride at 900 o C, and the samples were incubated in soil under controlled conditions before cropping. The experiment was conducted in a greenhouse using corn (Zea mays L.) plants cultivated in pots in a completely randomized 2x3 + 2 factorial block design with five replications. Five plants were growth in each pot with 5 kg of an Oxisol-Typic Hapludox soil for three successive 33day cropping periods. At the end of each cropping period the K contents of shoot dry matter and soil and were determined. There was no effect on shoot dry matter production (p> 0.05). There was greater soil and dry matter K contents when heated NS was used, but for particle size. The treatments significantly affected (p <0.01) the K levels in the plants in the first crop. There was no residual effect on potassium content in the soil after the third crop (p> 0.05). NS in natura has low solubility and does not provide potassium to plants while calcined rock powder works as a thermopotassium source. Pó de rocha de nefelina sienito calcinado aumenta a disponibilidade de potássio para o milho RESUMO Este trabalho avaliou o uso do pó de nefelina sienito (NS) como fonte de potássio para o milho em função do tamanho das partículas e o tratamento térmico a 900 o C com cloreto de cálcio (calcinação). Os tratamentos foram incubados no solo em condições controladas antes do plantio. O experimento foi conduzido em casa de vegetação usando plantas de milho (Zea mays L.) cultivadas em vasos, em um delineamento fatorial 2X3 + 2 em blocos completamente casualizado, com cinco repetições. Foram realizados três cultivos consecutivos de 33 dias, sendo que em cada cultivo cada vaso com 5 kg de Latossolo Vermelho-Amarelo distrófico continha cinco plantas de milho. No final de cada período, foram determinados os teores de Rev. Ambient. Água vol. 7 (supplement) -Taubaté 2019 2 Julio Cesar Raposo de Almeida et al. massa seca da parte aérea, teores de K no solo e na matéria seca da parte aérea. Não houve efeito dos tratamentos na produção de matéria seca da parte aérea (P> 0,05). Maiores teores de K no solo e na matéria seca foram observados quando se utilizou o pó de rocha calcinado, independentemente do tamanho das partículas. Os tratamentos afetaram significativamente (P <0,01) os níveis de K nas plantas na primeira safra. Não houve efeito residual no teor de potássio no solo após o terceiro cultivo (P> 0,05). O pó de nefelina sienito in natura apresentou baixa solubilidade e não forneceu potássio às plantas, enquanto o pó de rocha calcinada funcionou como um termopotássio. Palavras-chave: agromineral, calcinação, remineralizador, rocha. Calcined nepheline syenite powder increases potassium availability … Rev. Ambient. Água vol. 7 (supplement) -Taubaté 2019 2017

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Effect of potassium sources and rates on arabica coffee yield, nutrition, and macronutrient export

Cited by 43 publications

References 8 publications

Fertilization with Silicon in Sweet Pepper Improved Plants Grown under Salt Stress

Fertilization with Silicon in Sweet Pepper Improved Plants Grown under Salt Stress

Korelasi Antara Ketinggian Tempat, Sifat Kimia Tanah, dan Mutu Fisik Biji Kopi Arabika di Dataran Tinggi Garut

Calcined nepheline syenite powder increases potassium availability to corn

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