scholarly journals Modified hydroponics and phenolic foam as technological innovations in the production of coffee seedlings from cuttings

2022 ◽  
Vol 43 (1) ◽  
pp. 351-366
Author(s):  
Samuel Henrique Cunha ◽  
◽  
Amador Eduardo Lima ◽  
Alex Mendonça Carvalho ◽  
Rubens José Guimarães ◽  
...  

Brazilian coffee production represents an important activity in the country’s agricultural sector and, for this reason, it requires innovative technologies for the production of seedlings, which is one of the most important inputs in crop implantation. Thus, plant cloning by cutting, mineral nutrition via modified hydroponics and the use of alternative substrates appear as technological innovations for seedling production. This study evaluated the production of clonal coffee seedlings in a modified hydroponic system in comparison to the conventional climate-controlled greenhouse system, using vermiculite and phenolic foam as alternative substrates. At the end of the experiment, the seedlings were analyzed for growth (height, stem diameter, number of total leaves, leaf area, root area, shoot and root dry matter) and physiological (chlorophyll content and stomatal conductance) characteristics. For the statistical analysis, a completely randomized design was used in a factorial scheme 2 (types of substrate) x 2 (cultivation systems) with six replications and ten plants per plot. The innovative modified hydroponic system leads to a greater growth of coffee seedlings produced by cuttings in tubes with vermiculite compared to those produced in conventional systems. The substrate phenolic foam can be used alternatively in the air-conditioned greenhouse system. However, in the modified hydroponic system, it is not indicated, as it causes total seedling mortality.

2020 ◽  
Vol 44 ◽  
Author(s):  
Carlos Donato da Silva Souza ◽  
Geronimo Ferreira da Silva ◽  
Sirleide Maria de Menezes ◽  
José Edson Florentino de Morais ◽  
José Amilton Santos Júnior ◽  
...  

ABSTRACT Cultivation using brackish waters can result in nutritional and metabolic imbalances in several plant species, consequently reducing the production of dry matter (DM) and accumulation of toxic ions (Na+ and/or Cl-) in plants. We evaluated the DM production, and nutrient and inorganic solute (Na+ and Cl-) content in green onion plants (cv. Todo Ano Evergreen - Nebuka) under different levels of nutrient solution salinity in combination with circulation frequencies of this solution. Two experiments were conducted in a hydroponic system, using a completely randomized design, in a 6 × 2 factorial scheme, with five replicates: six levels of nutrient solution salinity (1.5, 3.0, 4.5, 6.0, 7.5, and 9.0 dS m-1) and two solution circulation frequencies (twice and thrice a day). In Experiment I, the evapotranspired depth was replaced using brackish water that was used to prepare each of the salinity levels (used exclusively), whereas in Experiment II, brackish water was used only to prepare each of the salinity levels and public water was used (electrical conductivity [ECw] = 0.12 dS m-1) for replacement in all treatments. The increase in the nutrient solution salinity reduced the production of DM and accumulation of nutrients; the reductions were more pronounced when brackish waters were used exclusively (Experiment I). However, the circulation of solutions thrice a day resulted in the harmful effects of the salinity effect. Replacing the evapotranspirated blade with water supply (Experiment II) mitigated the deleterious effects of salinity. Moreover, three circulations of the nutrient solution daily resulted in lower accumulation of inorganic Na+ and Cl- solutes and increased accumulation of nutrients N, P, K+, Ca2+, Mg2+, and S in the culture.


2020 ◽  
Vol 7 (1) ◽  
pp. 43-48
Author(s):  
Eduardo Santana Aires ◽  
Carlos Alberto Aragão ◽  
Itala Laiane Silva Gomes ◽  
Gilmário Noberto de Souza ◽  
Isa Gabriela Vieira de Andrade

This study aimed to evaluate different substrates to produce yellow passion fruit seedlings. For this purpose, an experiment was carried out in a greenhouse, from April to June 2016. A completely randomized design with five replications, in a 6 x 5 factorial scheme was used. The first factor was the alternative substrates (poultry, cattle and equine manure, sugarcane and coconut bagasse, and Organomais compost). The second factor was the replacement levels to the commercial substrate of Plantmax® (100:0, 75:25, 50:50, 25:75, 0:100). The seedling evaluation was carried out 42 days after sowing. The following variables were analyzed: length, width, and the number of leaves; plant height and shoot dry matter. A significant effect (P0.05) for the interaction between the factors was verified. The addition of 60% cattle manure and Organomais to the commercial substrate Plantmax® promoted greater length, width, and the number of leaves, plant height, and shoot dry matter accumulation in the yellow passion fruit seedlings.


2021 ◽  
Vol 913 (1) ◽  
pp. 012020
Author(s):  
I M Sudantha ◽  
Suwardji ◽  
N L P N Sriwarthini

Abstract The kangkung (Ipomoea aquatica Forsk) is water spinach typical of Lombok Island, Indonesia with a crunchy texture and distinctive taste. It is very easy to be cultivated in the home garden organically in soil media, also to be planted hydroponically and aquaponically. Hydroponic system cultivation is the cultivation of plants by utilizing water without using soil with an emphasis on meeting the nutritional needs of plants. One of the nutrients that has good prospects is the Trichoderma bionutrient which is made from a mixture of bioactivator and biourin. The purpose of this study was to determine the agronomic response of water spinach plants typical of Lombok Island with a hydroponic system treated with Trichoderma bionutrients. The study used an experimental method carried out in a plastic house with a hydroponic system. The study used a completely randomized design with hydroponic nutrition treatment consisting of 6 levels, namely: without bionutrients, with bioactivator bionutrients, with biourin bionutrients, with a mixture of bioactivator and biourin, with AB mix nutrition, with a mixture of Trichoderma bionutrients and Ab mix nutrients. Each treatment was repeated 4 times so that there were 24 experimental units. The results showed that the treatment with a mixture of bionutrients with a mixture of bioactivators and Trichoderma biourin was as good as AB mix nutrition in promoting growth and wet weight of kangkung typical of Lombok Island.


2018 ◽  
Vol 14 (2) ◽  
pp. 92
Author(s):  
Rizka Novi Sesanti ◽  
Hilman Hidayat ◽  
Sismanto Sismanto

This research is about application IBA and NAA with some cutting materials of “Madu Deli Hijau” water apple using NFT hydroponic system was aim to study the growth of water apple’s cuttings was treated by IBA and NAA 500 ppm and study the best kind of cutting materials of water apple that can growth the most.  This research was conducted using completely randomized design in two factors.  The first was consisted of 7 treatments; control (without Auxin), IBA 500 ppm, and NAA 500 ppm. The second was consisted of 4 treatments; woody branch (hardwood), semi woody (semi hardwood), and soft branch, softwood, and shoots. The results showed that the added auxin in the form of IBA and NAA 500 ppm can increase the success of madu deli hijau water apple cuttings and the cuttings from the shoots are the best for the success of madu deli hijau water apple in NFT hydroponic system.


2019 ◽  
Vol 32 (2) ◽  
pp. 364-369
Author(s):  
WIARA DE ASSIS GOMES ◽  
NILTON NAGIB JORGE CHALFUN ◽  
PEDRO MARANHA PECHE ◽  
JOSÉ DARLAN RAMOS ◽  
VALDEMAR FAQUIN

ABSTRACT The purpose of this experiment was to evaluate the production of budstocks and the viability of the buds of the ‘Valencia’ and ‘Pera’ orange tree varieties in a hydroponic system. The experiment was arranged in a completely randomized design in a 2 × 3 factorial scheme. The two orange varieties were grafted onto the Rangpur lime tree with three leading systems (single stem, two stems, and three stems) and three replications of 10 plants per plot. The time that elapsed between pruning the stems at 40 cm and the first collection, as well as the time between each harvest were determined. The number of buds in the median part of the stems and percentage of viable buds in each leading system were also measured. This was determined after performing inverted T budding on the Rangpur lime tree rootstocks and verifying that the procedure was successful. The production of citrus plant budstocks is feasible in a hydroponic system.


2013 ◽  
Vol 33 (4) ◽  
pp. 718-729 ◽  
Author(s):  
José Amilton Santos Júnior ◽  
Hans R. Gheyi ◽  
Doroteu H. G. Filho ◽  
Frederico A. L. Soares ◽  
Nildo da S. Dias

In order to identify alternatives for the use of saline water in agricultural production, the effects of the use of brackish water in the preparation of the nutrient solution for the cultivation of sunflower (cv. EMBRAPA 122-V2000) were studied in hydroponic system on consumption and efficiency of water use for the production of achenes and biomass. A completely randomized design was used, analyzed in a 5x2 factorial scheme with three replications. The factors studied were five levels of salinity of nutrient solution (1.7 - control; 4.3; 6.0; 9.0; and 11.5dS m-1) and two plant densities - one or two plants per vessel. It was concluded that the water consumption of sunflower is a variable sensitive to the salinity of the nutrient solution, especially after the fourth week of crop, and that the efficiency of water use in the production of achenes and biomass of sunflower is greater when the plant density increases from one to two plants per vessel, even under saline stress.


2021 ◽  
Vol 14 (12) ◽  
Author(s):  
Cleverson Agueiro de Carvalho ◽  
Reginaldo Almeida Andrade ◽  
Felippe Coelho de Souza ◽  
Rychaellen Silva de Brito ◽  
Davair Lopes Teixeira Junior ◽  
...  

The production of native species seedlings is essential for the establishment of planted forests or for the recovery of degraded areas. In the nursery stage, the quality of the substrate is crucial for plant growth and development. The objective of this work was to evaluate the influence of alternative substrates, produced from agroforestry residues and decomposed forage grasses, on the biomass input and quality of cedar (Cedrela odorata) seedlings. The experiment was carried out in a greenhouse, located in Rio Branco, Acre, in a completely randomized design, with three treatments, consisting of substrates: brachiaria organic compost (1:1); organic compost combined with crushed brazil nut husk (2:1) and commercial substrate, with ten repetitions. At 90 days after sowing, total, shoot and root dry matter and Dickson's quality index were evaluated. The organic compost from Brachiaria grass favors the accumulation of biomass, improves the quality of cedar seedlings and can replace the commercial substrate in a viable way.


2019 ◽  
Vol 8 (1) ◽  
pp. 32
Author(s):  
Nur Hafijah ◽  
Tutik Nugrahini ◽  
Zainudin Zainudin

Effect of hydroponic systems and planting media on growth and production of mustard plants (Brassica rapa L) The purpose of this study was to determine the effect of systems and different hiodroponic growing media on the growth and production of mustard plants. This research was conducted for 3 months, starting from June to September 2017. The research location was located in Embalut village, Tenggarong Sub-District, across the Kutai Kartanegara Regency, East Kalimantan Province. The research design used was Completely Randomized Design (CRD) consisting of 2 factors with 5 replications, the first factor was the hydroponic system consisting of 3 (three) levels, namely: system wick (s₁), system NFT (s₂), system DFT (s₃) . The second factor is m₁ = husk charcoal, m₂ = Cocopeat, m₃ = Rockwool. The results of this study indicate that the treatment system has a very significant effect on the average number of leaves, leaf width, plant height, leaf width of mustard plants aged 4, 5 and 6 mst, did not significantly affect the fresh weight of mustard plants. The media treatment did not affect the average number of leaves, plant height, leaf width of plants at 4, 5, 6 and fresh weight of plants did not have significant effect. The effect of the best system treatment on the growth of mustard plants produced by the NFT system (s₂), the best media treatment for the growth of mustard plants was produced by the Cocopeat treatment (m₂). The highest interaction with the fresh weight of mustard plants was produced by a combination of treatment s₂xm₂.;


2020 ◽  
Vol 18 (3) ◽  
pp. 157-165
Author(s):  
Wiara De Assis Gomes ◽  
Nilton Nagib Jorge Chalfun ◽  
Valdemar Faquim ◽  
Pedro Maranha Peche ◽  
Walter Dos Santos Soares Filho

It was intended to evaluate the influence of indolebutyric acid (IBA) and zinc upon the rooting and development of rootstock of ‘Cravo’ lemon tree transplants of bare root to the modified hydroponic system in the grafting stage. Plants of rootstocks were treated by immersion of their root system into the different solutions tested for 24 hours. The experiment was arranged in a completely randomized design with seven treatments composed of IBA doses of 50, 100 and 200 mg.L-1 and Enervig® which contains in its formulation 33.92 g.L-1 of Zn at 60, 90 and 120 ml.L-1, and distilled water as a control with three replications and nine plants per plot, amounting to 189 plants , 15 cm tall. The rootstocks were transplanted to the tubes and taken to the modified hydroponic system, being evaluated (1) the development of the plants and (2) the time needed for the rootstocks to reach the grafting stage, considered ideal between 5 and 6 mm in diameter. The treatment with a solution of 100 mg.L-1of IBA proved superior to the others in the development of height and biomass yield and tended to provide greater stem diameter development. The grafting point was obtained, on average at 70 days after transplanting and the production of Rangpur lime trees in a hydroponic system may be recommended. When the root system of the ‘Cravo’ lemon tree was treated with 100 mg.L-1 solution the IBA grafting point was obtained at 45 days after transplanting.


2011 ◽  
Vol 40 (2) ◽  
pp. 245-250 ◽  
Author(s):  
Gislayne de Araujo Bitencourt ◽  
Lucimara Chiari ◽  
Valdemir Antônio Laura ◽  
Cacilda Borges do Valle ◽  
Liana Jank ◽  
...  

The objective of this work was to evaluate aluminum tolerance of five genotypes of Urochloa decumbens (D24, CD24-2, CD24-27, CD24-45 e D62) and five genotypes of Urochloa ruziziensis (R30, R44, R46, R50 and R125) in hydroponic system. Uniform tillers were collected from these genotypes and transferred to two solutions: solution 1 (200 μM CaCl2, pH 4.2) and solution 2 (200 μM CaCl2 + 200 μM AlCl3, pH 4.2). Twenty-one days later, the roots of the plants were separated, stained and digitalized for analysis of the length and diameter of the main root. The experiment was conducted in a completely randomized design, in factorial (genotypes × doses) with three replications. A significant interaction occurred between genotype and dose for length and width of the main root, and the results presented in average, a significant difference for most genotypes. The means of main root length in the absence and presence of aluminum were not significant for D62 (U. decumbens cv. Basilisk), CD24-45 and R46. Means were not significant for the diameter of the main root for CD24-2, CD24-27 and D62. Genotype D62 was the only one classified as tolerant to aluminum and R50 the only one classified as sensitive. Most evaluated genotypes showed medium to low tolerance. This classification was based on confidence intervals (IC 99%) for the mean of the relative tolerance indices estimated for length and diameter of the main root. These results can be used in the choice of progenitors aiming at developing segregating populations for studies of inheritance and mapping of genes and/or loci related to aluminum tolerance in Urochloa.


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