scholarly journals Lettuce production in greenhouse under fertirrgation with nitrogen and potassium silicate

2017 ◽  
Vol 39 (2) ◽  
pp. 211 ◽  
Author(s):  
Renan Soares de Souza ◽  
Roberto Rezende ◽  
Tiago Luan Hachmann ◽  
Cláudia Salim Lozano ◽  
André Felipe Barion Alves Andrian ◽  
...  
Keyword(s):  
Experimental Design ◽  
Factorial Design ◽  
Irrigation System ◽  
Potassium Silicate ◽  
The Other ◽  
Control Treatment ◽  
Fresh Matter ◽  
Number Of Leaves ◽  
Micro Irrigation ◽  
Best Responses

The objective of this study was to evaluate the effect of nitrogen and potassium silicate on the production and commercial aspects of curly lettuce, Vera cultivar. The experimental design was completely randomized (CRD), with ten treatments and three replications. The treatments, arranged in a factorial design according to the Plan Puebla III matrix (Turrent & Laird, 1975), consisted of the combination of five doses of nitrogen (9; 54; 90; 126, and 171 kg ha-1) and five doses of potassium silicate (1.15; 6.90; 11.50; 16.10, and 21.85 kg ha-1). A control treatment without application of nitrogen and potassium silicate was also inserted. The crop was grown in a greenhouse, and the doses were applied as sidedressing using a drip micro-irrigation system. Total fresh matter, commercial fresh matter, non-commercial fresh matter, number of leaves and commercial trade index were evaluated. The commercial fresh matter and the number of commercial leaves per plant were affected only by nitrogen fertigation and increased linearly with an increase in the dose of nitrogen, with the best responses observed at the highest dose of this element (171 kg ha-1). Potassium silicate only had an effect on non-commercial fresh matter, with no influence on the other characteristics. 

EVALUACIÓN DEL EFECTO DE DOS VARIANTES DE RIEGO LOCALIZADO A BAJA PRESIÓN EN EL CULTIVO DE LA LECHOSA EN EL VALLE DE QUIBOR, VENEZUELA.

Irriga ◽  
2007 ◽  
Vol 12 (1) ◽  
pp. 1-13
Author(s):  
Yelitza Garcia ◽  
Juan Jose Brito ◽  
Lisette Gruber
Keyword(s):  
Experimental Design ◽  
Carica Papaya ◽  
Irrigation System ◽  
Irrigation Treatment ◽  
The Other ◽  
Irrigation Level ◽  
El Sistema ◽  
Number Of Leaves ◽  
Use Efficiency ◽  
The Eu

EVALUACIÓN DEL EFECTO DE DOS VARIANTES DE RIEGO LOCALIZADO A BAJA PRESIÓN EN EL CULTIVO DELA LECHOSAENEL  VALLE DE QUIBOR, VENEZUELA.  Yelitza García1;Juan José Brito2; Lisette Gruber1[1] Universidad Centroccidental Lisandro Alvarado, Decanato de Agronomía, Departamento de Ing. Agrícola, Tarabana. Cabudare, Estado Lara, [email protected] Instituto Nacional de Investigaciones Agrícolas, Centro de Investigaciones Agropecuarias del estado Lara, Intercomunal Barquisimeto – Duaca  1 RESUMEN El trabajo se realizó en el Municipio Jiménez, Estado Lara, Venezuela, en una parcela con dos sectores de riego localizado, cada uno con cuatro hileras de50 mde longitud, en uno se instaló el tratamiento con goteros comerciales y en el segundo goteros fabricados manualmente o denominados goteros artesanales. El diseño experimental fue de parcelas divididas, con bloqueo por efecto de pendiente. La siembra fue realizada el día 16 de Noviembre de 2002 con una densidad poblacional de 100 plantas Las variables medidas fueron altura de planta (AP), diámetro de tallo (DT), número de hojas (NH), días de floración (DF) y producción (P). Se determinó la uniformidad de emisión (UE), lámina de riego (LR) y la eficiencia de uso del agua (EUA). Las variables AP, DT, NH y P presentan valores superiores en el tratamiento del gotero artesanal, así mismo los DF son menores en el tratamiento regado por goteros artesanales.La UEde los goteros artesanales y comerciales fue de un 55,53% y 74, 27% respectivamente.La LRaplicada durante el ensayo con los goteros artesanales y comerciales fue de 610 y507 mmrespectivamente.La EUAfue muy superior en el sistema donde se utilizan los goteros artesanales. UNITERMOS: lechosa (Carica papaya L.), emisores, crecimiento.  GARCÍA, Y.;BRITO, J. J.; GRUBER, L. EVALUATION OF THE EFFECT OF TWO LOW PRESSURE  IRRIGATION TREATMENTS  IN A FIELD IN  VALLE DE QUIBOR, VENEZUELA  2 ABSTRACT This experiment was carried out in theJiménezMunicipality, Lara State, Venezuela, in a field with two located irrigation areas with four 50-m long rows each. In one area, a commercial irrigation system was installed whereas the other one had an irrigation system with handmade emitters. The experimental design had divided parcels, with blockade by slope effect.  The planting of 100 plants was on November 16, 2002. The measured variables were plant height (PH), stem diameter (SD), number of leaves (NL), days of flowering (DF) and production (P). Emission uniformity (EU), irrigation level (IL) and water use efficiency (WUE) were determined. Variables for PH, SD, NL and P presented higher values in the treatment with handmade emitters, also the DF are smaller in the treatment watered by handmade emitters.  The EU of the handmade emitters and commercial emitters was 55.53% and 74.27%, respectively.  The applied IL during the treatments with handmade and commercial emitters was 610 and507 mm, respectively.  The WUE was very superior in the irrigation treatment where the handmade emitters were used. KEYWORDS: Carica papaya L., handmade emitters, growth.

scholarly journals Performance of mulberry cultivars (Morusspp.)in response to different stem cuttings and fertilizers

2021 ◽  
Vol 17 (4) ◽  
pp. 47-58
Author(s):  
Anelisa de Aquino Vidal Lacerda Soares ◽  
Fernanda de Paiva Badiz Furlaneto ◽  
Cláudio Hajime Funai ◽  
Eduardo Gazola
Keyword(s):  
Aqueous Solution ◽  
Factorial Design ◽  
Production Cost ◽  
Dry Matter ◽  
Shoot Length ◽  
Control Treatment ◽  
Stem Cuttings ◽  
Tukey Test ◽  
K Fertilizer ◽  
Number Of Leaves

The objective is to analyze techniques to form mulberry seedlings with different cutting sizes and forms of fertilization with N-P-K aiming a low production cost and an easy application in field. The experiment was carried out in a screened nursery, with a shading of 34%. The treatments were distributed in randomized blocks (RB) and compared in a 2x4x3 factorial design with five replications and 12 plants per plot. The factorial design consisted of two cutting lengths (10 and 20 cm) distributed in plastic tubes of 70 and 120 mL, four mulberry cultivars (IZ40, IZ10/1, Korin, and IZ3/2), and two types of fertilization: addition of 84 g of Osmocote® for each kilo of substrate, fertigation with aqueous solution containing 84 g of 14-14-14 N-P-K for each kilo of substrate, plus a control treatment (without fertilization). The commercial substrate Basaplant citrus® was used. 90 and 140 days after planting, assessments of percentage of rooting were carried out. At 140 days, shoot length (cm), number of shoots, number of leaves, root length (cm), and shoot and root green and dry matter were evaluated. The data obtained were evaluated using the Sanest software and Tukey test (P<0.05). Cuttings of 20 cm in length in tubes of 120 mL are recommended for the best formation of mulberry seedlings with the application of N-P-K fertilizer through fertigation. The cultivars showed different rooting potentials and shoot development. The best results are for Korin and IZ 10/1.

scholarly journals Adaptation of anthurium cultivars as cut flowers in a subtropical area

2011 ◽  
Vol 46 (2) ◽  
pp. 161-166 ◽  
Author(s):  
Adriane Marinho de Assis ◽  
Lilian Keiko Unemoto ◽  
Ricardo Tadeu de Faria ◽  
Deonísio Destro ◽  
Lúcia Sadayo Assari Takahashi ◽  
...  
Keyword(s):  
Experimental Design ◽  
The Other ◽  
Stem Length ◽  
Cut Flower ◽  
Cut Flowers ◽  
Subtropical Area ◽  
Number Of Leaves ◽  
Anthurium Andraeanum

The objective of this work was to evaluate the adaptation of anthurium (Anthurium andraeanum) cultivars as cut flowers in a subtropical area, located in north of Paraná State, Brazil. The Apalai, Ianomami, Kinã, nK 102, Parakanã, Rubi, and Terena cultivars were cultivated in a nursery under 80% shade. The number of leaves and inflorescences, floral stem length, length and width of inflorescences, and spadix length were evaluated. The experimental design was in completely randomized blocks, with six replicates and five plants per plot. During the 18 months evaluated, 'Parakanã' produced 11 inflorescences per plant, whereas the other cultivars produced seven to nine inflorescences per plant. The number of leaves produced per plant was: 'Ianomami', 25; 'Parakanã', 20; 'Apalai' and 'Terena', 15; 'Kinã' and 'Rubi', 11; and 'nK 102', 9. The Apalai, nK 102, Parakanã, and Rubi cultivars are the most recommended as cut flowers; the Ianomami cultivar is not recommended as a cut flower in this region.

scholarly journals Effects of humus and shading levels in the production of Lactuca canadensis L. seedlings

2020 ◽  
Vol 69 (1) ◽  
pp. 32-37
Author(s):  
Dryelle Sifuentes Pallaoro ◽  
Cárita Rodrigues de Aquino Arantes ◽  
Amanda Ribeiro Correa ◽  
Elisangela Clarete Camili ◽  
Maria de Fátima Barbosa Coelho
Keyword(s):  
Experimental Design ◽  
Chlorophyll Content ◽  
The Other ◽  
Cost Ratio ◽  
Benefit Cost Ratio ◽  
Number Of Leaves ◽  
Four Levels ◽  
Benefit Cost ◽  
Different Levels

The objective of this study was to verify levels of shade and doses of earthworm humus in the production of Lactuca canadensis L. seedlings.  The experimental design was completely randomized in a 4 x 5 factorial scheme (four levels of shade and five doses of humus).  The different levels were obtained using black polyethylene screen with 35, 50 and 70% shade and in full sun. The substrates were obtained by mixing commercial substrate for vegetables (Vivatto Slim ® plus), with earthworm humus in the proportions of 0, 15, 30, 45 and 60%.  There was no seedlings emergence in the full sun and, the treatment with 50% of shade allows the best development. The substrate without humus and with 60% presented superior results but the higher dose stood out for number of leaves (3.14) and chlorophyll content (32.9%), in 50% of shade. For the other variables, there was no difference between the commercial substrate and 60% of humus, so the commercial substrate can be used in the production of Lactuca canadensis L. seedlings, considering the ratio benefit/cost ratio. 

scholarly journals Topworking of 'Bengal' lychee trees in the state of São Paulo, Brazil

2014 ◽  
Vol 36 (3) ◽  
pp. 680-685
Author(s):  
Márcio de Carvalho Pires ◽  
Osvaldo Kiyoshi Yamanishi ◽  
José Ricardo Peixoto
Keyword(s):  
Experimental Design ◽  
Success Rate ◽  
Chlorophyll Content ◽  
Normal Growth ◽  
Sao Paulo ◽  
Shoot Length ◽  
The Other ◽  
São Paulo ◽  
Success Rates ◽  
Number Of Leaves

This study aimed to evaluate the performance of 'Feizixiao', 'Nuomici', 'Heiye', 'Kway May Pink' and 'Bengal' lychee cultivars topworked onto bearing 'Bengal' trees. The experiments were carried out in commercial orchard at Rio das Pedras Farm in Jundiaí, state of São Paulo. The experimental design consisted of randomized blocks in a subdivided parcel arrangement, in which the parcel consisted of five cultivars and the sub-parcel consisted of six evaluation periods. Five replicates of three plants per parcel and six grafts per plant, (with two grafts per main branch) were used. The trees were approximately 10 years old propagated by air layering and planted with 6 x 4 m (416 plants/ha) spacing. The following characteristics were evaluated: success rate of the grafts, number of shoots, shoot length, number of nodes, number of leaves and chlorophyll content (SPAD). The control ('Bengal'/'Bengal') had the highest grafting success rate with 89.9%. On the other hand, 'Heiye', 'Feizixião', 'Nuomici' and 'Kway May Pink' had, respectively, 60.6, 55.0, 52.6 and 47.0% grafting success rates. All of the shoot grafts had normal growth with no signs of incompatibility. Therefore, the cultivars studied are compatible with 'Bengal' and may be used on commercial orchards.

scholarly journals Organic Fertilizers Vis-à-vis Growth Performance of Euphorbia fulgens

2016 ◽  
Vol 12 (18) ◽  
pp. 24
Author(s):  
Florita O. Odivilas
Keyword(s):  
Experimental Design ◽  
Growth Performance ◽  
Plant Height ◽  
Growth Parameters ◽  
The Other ◽  
Organic Fertilizers ◽  
Chicken Manure ◽  
Insignificant Difference ◽  
Number Of Leaves ◽  
Made In

This study was conducted to find out the effect of fertilizers on the performance of two hybrids of Euphorbia as indicated by growth and flowering performance. The experimental design with controlled variables was used in the study. The use of organic fertilizers like the use of animal dungs or wastes was proven effective based on the different trials made. In terms of the effect of the fertilizers in the growth performance, there were significant differences on plant height, stem girth, number of leaves, and number of shoots during the 20th, 50th and 80th days of observations. The number of flowers was found to have significant differences in all stages. When measured during the 80th day of observation, significant differences were shown in the size of flowers. However, insignificant difference was shown in the diameter of flower bracts. As to the growth parameters, carabao manure yielded more leaves, and shoots and taller Euphorbia Orchid. It also produced bigger stem girths, wider and longer leaf sizes of Siam Ruby hybrid. As to flowering parameters, carabao manure influenced the growth of more number of flower clusters and bigger sizes of flowers of Euphorbia Orchid. On the other hand, chicken manure also influenced the growth of more number of flowers per cluster of Siam Ruby during the 50th day observation and carabao manure during the 20th day observation.

scholarly journals ASPECTOS MORFOFISIOLÓGICOS DO GIRASSOL IRRIGADO POR GOTEJAMENTO NO SUBMÉDIO SÃO FRANCISCO

Irriga ◽  
2018 ◽  
Vol 1 (1) ◽  
pp. 66 ◽  
Author(s):  
Welson Lima Simões ◽  
Daniela Siqueira Coelho ◽  
Moisés Alves Souza ◽  
Marcos Antônio Drumond ◽  
Joston Simão Assis ◽  
...  
Keyword(s):  
Experimental Design ◽  
Gas Exchange ◽  
Helianthus Annuus ◽  
Plant Height ◽  
Oil Content ◽  
Irrigation System ◽  
Helianthus Annuus L ◽  
Weight Yield ◽  
Number Of Leaves ◽  
Irrigation Levels

ASPECTOS MORFOFISIOLÓGICOS DO GIRASSOL IRRIGADO POR GOTEJAMENTO NO SUBMÉDIO SÃO FRANCISCO WELSON LIMA SIMÕES1; DANIELA SIQUEIRA COELHO2; MOISÉS ALVES SOUZA3; MARCOS ANTÔNIO DRUMOND4; JOSTON SIMÃO ASSIS5 E JAIR ANDRADE LIMA6 1Eng. Agrônomo, Doutor, Embrapa Semiárido, Petrolina-PE, CEP 56302-970, email: [email protected]. Agrícola e Ambiental, Doutoranda, Universidade Federal Rural de Pernambuco, Recife-PE, CEP 52171-900, email:[email protected]ólogo, Mestre, Embrapa Semiárido, Petrolina-PE, CEP 56302-970, email: [email protected]. Florestal, Doutor, Embrapa Semiárido, Petrolina-PE, CEP 56302-970, email: [email protected]. Agrônomo, Doutor, Embrapa Semiárido, Petrolina-PE, CEP 56302-970, email: [email protected]ólogo, Universidade de Pernambuco, Petrolina-PE, CEP 56328-903, email: [email protected]  1 RESUMO O objetivo desse trabalho foi avaliar a influência de diferentes lâminas de irrigação e arranjos de gotejadores nas características morfofisiológicas de variedades de girassol. O delineamento experimental foi em blocos casualizados dispostos em esquema fatorial 2x2x4, considerando duas variedades de girassol (Hélio 251 e Hélio 360), dois arranjos das linhas de gotejo (fileiras simples e fileiras duplas) e quatro lâminas de irrigação (75, 90, 105 e 120% da ETc), com três repetições. Foram avaliados altura, diâmetro do caule, número de folhas, peso do capítulo, peso de mil aquênios, produtividade e respostas fisiológicas das plantas. A partir dos resultados obtidos, foi observado que, no geral, a lâmina correspondente a 100% da ETc proporcionou as melhores respostas para o cultivo das variedades de girassol Hélio 251 e Hélio 360. Considerando a não diferença significativa entre os arranjos das linhas de gotejadores, o de fileiras duplas torna-se o mais viável para o cultivo de girassol, tendo em vista sua maior economia na instalação do sistema de irrigação. O teor de óleo dos aquênios não é influenciado pela disponibilidade de água para as plantas de girassol.  Palavras-chave: Helianthus annuus L., produtividade, trocas gasosas, teor de óleo  SIMÕES, W. L; COELHO, D. S.; SOUZA, M. A.; DRUMOND, M. A.; ASSIS, J. S; LIMA, J. A.MORPHOPHYSIOLOGICAL ASPECTS OF SUNFLOWER IRRIGATION DRIP IN SUBMIDDLE OF THE SÃO FRANCISCO  2 ABSTRACT  The aim of this study was to evaluate the influence of different irrigation drip in single and double rows on morphological and physiological characteristics of sunflower varieties. The experimental design was randomized blocks in a factorial 2x2x4 considering two varieties (Hélio 251 e Hélio 360), two provisions of drip lines (single and double rows), four irrigation levels (75, 90, 105 and 120% of ETc) and three replications. At the end of the experiment, plant height, stem diameter, number of leaves, weight of the chapter, a thousand achenes weight, yield, and gas exchange. From the results obtained, it was observed that, in general, the blade corresponding to 100% of ETc provided better answers in the cultivation of sunflower varieties Hélio 251 e Hélio360. A irrigated by drip lines available in double rows is more feasible for sunflower cultivation in view of its greater savings in installation of the irrigation system and its effect is similar to that of single rows. The variety has 360 Helium oil content higher than 251 helium. keywords: Helianthus annuus L., productivity, gas exchange, oil content.

scholarly journals Radish cultivation with hydrogel doses combined with different water slides in drip irrigation system

2021 ◽  
Vol 10 (4) ◽  
pp. e54810414394
Author(s):  
Patricia dos Santos Zomerfeld ◽  
Natane Bonfim Lima ◽  
Guilherme Augusto Biscaro ◽  
Anamari Viegas de Araujo Motomiya ◽  
Aline Baptista Borelli ◽  
...  
Keyword(s):  
Water Stress ◽  
Experimental Design ◽  
Reference Evapotranspiration ◽  
Irrigation System ◽  
Dry Mass ◽  
Root Diameter ◽  
Shoot Length ◽  
Drip Irrigation System ◽  
Yield And Quality ◽  
Number Of Leaves

Radish yield and quality are factors influenced by water stress that may occur during periods of drought or irrigation handled inappropriately, interfering negatively in plants development, producing radishes of inferior quality and in lesser quantity. In addition to irrigation, which makes water available in the system, it is important to maintain it with the use of water-retaining products such as hydrogel. The aim of this work was to evaluate radish yield, submitted to three different hydrogel doses combined with two water slides. The experimental design was in factorial scheme 3 x 2, with three water slides (50%, 75% and 100% Eto – reference evapotranspiration estimate) and two hydrogel doses (40 and 60 g m-2) with four replicates. Number of leaves, horizontal and vertical root diameter (mm), total and shoot length (cm), fresh mass of root and shoot (g), dry mass of shoot and root (g) and yield (t ha-1) were evaluated. The best results, regarding radish production and development, were obtained when using 50% of Eto with 60 g m-2 of hydrogel in combination. Thus, radish cultivation in oxisoil was influenced by the use of hydrogel, which provided a more efficient water level use.

scholarly journals The Effect on Substrate Silica Incorporation on Post-germination Damping Off of Vinca

HortScience ◽  
2006 ◽  
Vol 41 (4) ◽  
pp. 979D-980
Author(s):  
Michael R. Evans ◽  
Bernard W. Krumpelman ◽  
Ramsey Sealy ◽  
Craig S. Rothrock
Keyword(s):  
Experimental Design ◽  
Plant Growth ◽  
Calcium Sulfate ◽  
Potassium Silicate ◽  
Phytophthora Nicotianae ◽  
The Other ◽  
Stem Rot ◽  
Damping Off ◽  
Bedding Plant ◽  
Uninoculated Control

Vinca (Catharanthus roseus) is a common annual bedding plant species that is susceptible to root and stem rot caused by Phytophthora nicotianae. The experimental design was a 6×2×1 factorial with a total of 12 treatment combinations that had five replications and was repeated twice. Vinca seeds were planted in the middle nine plugs of a 5×5 five-milliliter round plug tray filled with sphagnum peat (control) or peat amended with 2.1 kg/m3 calcitic lime, 5.9 and 7.3 kg/m3 potassium silicate alone and combined with 3.0 kg/m3 calcium sulfate. A peat control drenched with metalaxyl after inoculation was also included. After germination, when the seedlings had one true leaf, half of the treatments were inoculated with 500 cfu of Phytophthora nicotianae per plug cell while the other half remained uninoculated. The percentage of germination for the potassium silicate combined with calcium sulfate (KSCS) (79% and 78%) was similar to the control (86%) and the metalaxyl treatment (83%), whereas the potassium silicate alone had poorer germination (69% and 71%) and plant growth. The percentage of mortality for the KSCS treatment (6% and 14%) was similar to the metalaxyl treatment (9%) but was significantly less than the control (100%). The average dry shoot and root weights for the KSCS treatments (4.4 and 4.9 mg; 2.7 and 2.2 mg) were similar to the metalaxyl treatment (5.0 and 3.6 mg) and the uninoculated control (5.0 and 3.2 mg), but were higher than the potassium silicate treatment alone (2.1 and 1.6 mg; 0.7 and 0.6 mg).

scholarly journals The Influence of Digestate and Mineral Fertilisers on Yields and Content of Nitrates and Ascorbic Acid in Kohlrabi Bulbs

2014 ◽  
Vol 62 (1) ◽  
pp. 161-166 ◽  
Author(s):  
Tomáš Lošák ◽  
Tereza Zlámalová ◽  
Monika Vítězová ◽  
Jaroslav Hlušek ◽  
Petr Škarpa ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Quality Parameters ◽  
The Other ◽  
Control Treatment ◽  
Nitrate Content ◽  
Fresh Matter ◽  
Urea Treatment ◽  
Yield And Quality ◽  
One Year ◽  
Small Content

In a one-year vegetation pot experiment we compared the effect of the digestate from a biogas plant and mineral fertilisers on yield and quality parameters of kohlrabi, variety Moravia. Four treatments were used in the trial: 1) untreated control, 2) urea, 3) digestate, 4) urea, triple super phosphate, KCl, MgSO4. The rate of N was the same in treatments 2–4, i.e. 1.5 g N/pot. In treatment 4 the rate of P, K and Mg corresponded with the rate of these nutrients in the digestate treatment (3). The inhibited growth of kohlrabi after the application of NPKMg (4) was obviously the consequence of early planting after the application of fertilisers (5 days) and of the salinity of the small content of soil in the pot and resulted in the lowest weight of single bulbs (69 g), followed by the unfertilised control treatment (75 g). After the application of the digestate (treatment 3) the weight of single bulbs significantly increased (126 g) compared to the urea treatment (101 g) and all the other treatments. The content of ascorbic acid in the fertilised treatments did not differ (441–458 mg/kg) but it increased significantly compared to the unfertilised treatment (398 mg/kg). There were significant differences among all the fertilised treatments (1–2–3–4) in the bulb nitrate content (346–1,147–815–1,091 mg NO3−/kg fresh matter, respectively). After digestate application their content decreased significantly to 815 mg NO3−/kg fresh matter. Digestate treatment resulted in comparable or better yields and qualitative parameters compared to all the other treatments.

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