scholarly journals Farklı Azot Kaynakları ile Yapılan Yaprak Gübrelemesinin Marul (Lactuca sativa L.)’da Verim, Nitrat Birikimi ve Maliyet Üzerine Etkisi

2020 ◽  
Vol 8 (4) ◽  
pp. 971-976
Author(s):  
Haluk Çağlar Kaymak ◽  
Adem Aksoy
Keyword(s):  
Lactuca Sativa ◽  
Calcium Nitrate ◽  
Potassium Nitrate ◽  
High Yield ◽  
Nitrate Accumulation ◽  
Nitrate Sources ◽  
Foliar Fertilization ◽  
Profitability Analysis ◽  
Lactuca Sativa L ◽  
Different Doses

The aim of this study was to determine effect of additional foliar fertilization with different doses of nitrate sources on yield, nitrate accumulation and cost of lettuce (Lactuca sativa L.) in field conditions. A summer heat resistant crisphead lettuce (cv. ‘Bohemia F1’) was used as plant material. Also urea (CO(NH2)2), potassium nitrate (KNO3) and calcium nitrate (Ca(NO3)2) were used as additional foliar fertilization with doses of 0.4%, 0.6% and 0.8%. Total nitrogen values of lettuce leaves ranged from 2.20% (KNO3 0.4%) to 3.00% (Urea 0.8%). The highest nitrate accumulation was determined with 0.8% application of Ca(NO3)2 with 2610 mg kg-1, while the lowest nitrate accumulation was determined with 2070 mg kg-1 only in base fertilization (NH4NO3). As a result of additional foliar fertilization with different nitrogen sources, it was determined that the highest yield values were 4926 kg da-1 (Urea 0.6%), 4787 kg da-1 (Urea 0.8%) and 4719 kg da-1 (Ca(NO3)2) in lettuce, respectively. However, considering the fertilizer costs in the research where the other agricultural inputs are the same, in the profitability analysis, the highest profit was determined in additional foliar fertilization with different doses of urea (0.6%) due to its low cost compared to other fertilizers. According to the results of the research, when the profitability is taken into consideration, it can be clearly said that the treatments with urea are more suitable and recommendable additional foliar fertilization for both high yield and more profit.

scholarly journals EC Sensitivity of Hydroponically-Grown Lettuce (Lactuca sativa L.) Types in Terms of Nitrate Accumulation

Agriculture ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 315
Author(s):  
Noémi Kappel ◽  
Ildikó Fruzsina Boros ◽  
Francia Seconde Ravelombola ◽  
László Sipos
Keyword(s):  
Lactuca Sativa ◽  
Nitrate Content ◽  
Saline Condition ◽  
Fresh Weight ◽  
Nitrate Level ◽  
Nitrate Accumulation ◽  
Strong Negative Correlation ◽  
Lactuca Sativa L ◽  
Hydroponically Grown ◽  
European Markets

The goal of this research was to investigate the effect of electrical conductivity (EC) levels of the nutrient solution on the fresh weight, chlorophyll, and nitrate content of hydroponic-system-grown lettuce. The selected cultivars are the most representative commercial varieties grown for European markets. Seven cultivars (‘Sintia,’ ‘Limeira,’ ‘Corentine,’ ‘Cencibel,’ ‘Kiber,’ ‘Attiraï,’ and ‘Rouxaï’) of three Lactuca sativa L. types’ (butterhead, loose leaf, and oak leaf) were grown in a phytotron in rockwool, meanwhile the EC level of the nutrient solutions were different: normal (<1.3 dS/m) and high (10 dS/m). The plants in the saline condition had a lower yield but elevated chlorophyll content and nitrate level, although the ‘Limeira’ and ‘Cencibel’ cultivars had reduced nitrate levels. The results and the special characteristic of the lollo-type cultivars showed that the nitrate level could be very different due to salinity (‘Limeira’ had the lowest (684 µg/g fresh weight (FW)) and ‘Cencibel’ had the highest (4396 µg/g FW)). There was a moderately strong negative correlation (−0.542) in the reverse ratio among the chlorophyll and nitrate contents in plants treated with a normal EC value, while this relationship was not shown in the saline condition. Under the saline condition, cultivars acted differently, and all examined cultivars stayed under the permitted total nitrate level (5000 µg/g FW).

scholarly journals ANÁLISE DE CUSTOS E DESEMPENHO AGRONÔMICO NA PRODUÇÃO DE ALFACE SUBMETIDA A NÍVEIS DE IRRIGAÇÃO E USO DE HIDRORRETENTOR

Irriga ◽  
2018 ◽  
Vol 1 (1) ◽  
pp. 55-70
Author(s):  
João de Jesus Guimarães ◽  
LEANDRO Caixeta Salomão ◽  
WELCIO RODRIGUES DA SILVA ◽  
HENRIQUE FONSECA ELIAS DE OLIVEIRA ◽  
DÉBORA REGINA MARQUES PEREIRA ◽  
...  
Keyword(s):  
Lactuca Sativa ◽  
Mato Grosso ◽  
Lactuca Sativa L ◽  
Federal Institute ◽  
Four Levels ◽  
And Performance ◽  
The Cost ◽  
Irrigation Levels ◽  
Different Levels ◽  
Different Doses

ANÁLISE DE CUSTOS E DESEMPENHO AGRONÔMICO NA PRODUÇÃO DE ALFACE SUBMETIDA A NÍVEIS DE IRRIGAÇÃO E USO DE HIDRORRETENTOR     1JOÃO DE JESUS GUIMARÃES; LEANDRO CAIXETA SALOMÃO2; WELCIO RODRIGUES DA SILVA3; HENRIQUE FONSECA ELIAS DE OLIVEIRA4; DÉBORA REGINA MARQUES PEREIRA5 E MANOEL HENRIQUE REIS DE OLIVEIRA6   1        Departamento de Engenharia Agrícola, Faculdade de Ciências Agronômicas – FCA – Unesp, Câmpus Botucatu, Avenida Universitária, 3780, CEP 18610-034, Altos do Paraíso, Botucatu-SP, Brasil, [email protected] 2     Departamento de Engenharia Agrícola, Instituto Federal de Educação Ciência e Tecnologia Goiano-Campus Urutaí, Rodovia Geraldo Silva Nascimento Km 2,5, Zona Rural, Urutaí-GO, Brasil, [email protected] 3        Universidade Estadual de Goiás, Campus Goianésia, Rua 35, nº 436, Setor Sul, Goianésia-GO, Brasil, [email protected] 4        Departamento de Irrigação e Drenagem, Instituto Federal de Educação Ciência e Tecnologia Goiano-- Campus Ceres, Rodovia GO 154, Km 03, s/n, Zona Rural, Ceres-GO, Brasil, [email protected] 5        Prefeitura Municipal de Goianésia, Av. Mato Grosso, nº 61 - Setor Universitário, Goianésia-GO, Brasil, [email protected] 6     Departamento de Irrigação no Cerrado, Instituto Federal de Educação Ciência e Tecnologia Goiano-Campus Ceres, Rodovia GO 154, Km 03, s/n, Zona Rural, Ceres-GO, Brasil, [email protected]     1 RESUMO   Objetivou-se com este trabalho realizar a análise de custo e desempenho agronômico da alface crespa produzida em ambiente protegido submetida a diferentes níveis de irrigação e diferentes doses de solução hidroretentora. O trabalho foi realizado na área experimental do Instituto Federal Goiano - Campus Urutaí-GO, cujas coordenadas geográficas são latitude 17º29’10” S, longitude 48º12’38” O e altitude de 697 m, no período de dezembro de 2017 a janeiro de 2018. O delineamento experimental utilizado foi o de blocos ao acaso, em esquema fatorial (4x5), com parcela subdividida e quatro blocos, em que se utilizaram quatro níveis de irrigação (50, 75, 100 e 125%) da evaporação obtida diariamente, junto ao tanque Classe A e cinco doses de solução de hidrogel (0, 50, 100, 150 e 200 g). Analisou-se o custo de produção considerando os gastos efetivos realizados durante o ciclo produtivo além das variáveis produtividade (PRO) e a eficiência do uso da água (EUA). Os níveis de irrigação e doses de solução hidrorretentora utilizados influenciaram significativamente as variáveis PRO e EUA. A lucratividade cresceu com o aumento das lâminas de irrigação e decresceu com a utilização do hidrogel.   Palavras-chave: análise econômica, hidrogel, Lactuca sativa L., viabilidade, lâminas de irrigação.     GUIMARÃES, J. J.1; SALOMÃO, L. C.2; SILVA, W. R.3; OLIVEIRA, H. F. E.4; PEREIRA, D. R. M.5; OLIVEIRA, M. H. R.6 ANALYSIS OF COSTS AND AGRONOMIC PERFORMANCE IN LETTUCE PRODUCTION SUBMITTED TO LEVELS OF IRRIGATION AND USE OF HYDRO RETAINER   2 ABSTRACT   The objective of this work was to perform an analysis of the cost and performance of crisp lettuce in a protected model, with different levels of irrigation and different doses of hidroretentora solution. The work was carried out in the experimental area of Goiás Federal Institute - Campus Urutaí-GO, geographic positions are latitude 17º29'10 "S, longitude 48º12'38" W and altitude 697 m, excluding the period from December 2017 to January 2018 (4x5), with subdivision of blocks using four levels of irrigation (50, 75, 100 and 125%) of the evaporation obtained daily, to tank Class A and five doses of hydrogel solution (0, 50, 100, 150 and 200 g). The product was analyzed with the advantage of having achieved, during the productive cycle, productive changes and efficiency in water use (USA). Irrigation levels and doses of hydrocortisone solution may significantly influence PRO and US variables. Profitability increased with the increase of irrigation slides and decreased with the use ofhydrogel.   Keywords: economic analysis, hydrogel, Lactuca sativa L., viability, irrigation blade.

scholarly journals Pengaruh Penambahan Ca(NO3)2 Terhadap Hasil Tanaman Selada Kriting (Lactuca Sativa L.) pada Sistem Hidroponik Deep Flow Technique (DFT)

2020 ◽  
Vol 10 (2) ◽  
pp. 190
Author(s):  
NI NYOMAN SURYANTINI ◽  
GEDE WIJANA ◽  
RINDANG DWIYANI
Keyword(s):  
Lactuca Sativa ◽  
Maximum Yield ◽  
Calcium Nitrate ◽  
Vegetable Crops ◽  
Hydroponic System ◽  
Lactuca Sativa L ◽  
Deep Flow Technique ◽  
The Moment ◽  
Require Composition ◽  
Nutrient Solutions

The Effect of Addition of Ca(NO3)2 to the Results of Lettuce (Lactuca sativa L.) in the Hydroponic System of Deep Flow Technique (DFT). Plants, in general, require composition, concentration, and volume of nutrient solutions which different depends on the type and phase of plant growth. Leaf vegetable crops such as lettuce (Lactuca sativa L.) require higher Nitrogen (N) nutrients than other vegetable crops, but the problem we faced at the moment is the hydroponic nutrients that are traded only in the general form of nutrient, therefore the addition of N nutrients in the form of calcium nitrate (Ca(NO3)2) needs to be done to meet the needs of lettuce plants. This study was aimed to determine the effect of the addition of Ca(NO3)2 and to find the optimum dosage of the addition of Ca(NO3)2 to the general hydroponic nutrition of vegetables on lettuce use DFT hydroponic system. The treatments consisted of five levels which are nutrition AB Mix general vegetable as a control, and nutrition AB Mix with the addition of 30 g, 60 g, 90 g, and 120 g Ca(NO3)2.  The results of the observation showed that the treatment of the addition of Ca(NO3)2 fertilizer had a very significant effect on all observed variables, except for the diameter of the lettuce plant. The optimum addition of Ca(NO3)2 for lettuce was found at 90.04 g with a maximum yield of 207.92 g.

Pengaruh Konsentrasi Kalian Nitrat pada Media Vermikompos Terhadap Kandungan Hara Trubus Selada (Lactuca Sativa L.)

Agrotek ◽  
2018 ◽  
Vol 2 (6) ◽  
Author(s):  
H. J. Namserna
Keyword(s):  
Electrical Conductivity ◽  
Nutrient Solution ◽  
Lactuca Sativa ◽  
Potassium Nitrate ◽  
Pot Experiment ◽  
Lactuca Sativa L ◽  
Shoot Tissue

<em>The content of nitrogen and potassium in vermicompost generally low, i.e. less than two percent, so that still require the addition of another source to meet crop requirement.� Potassium nitrate to form the ions K<sup>+</sup> and NO<sub>3</sub><sup>?</sup>� after disolved in water so as to be readily available to plants.� The study aims to determine the effect of the addition of potassium nitrate in vermicompost me</em>dium to the concentration of nutrients in the shoot of lettuce.� Research conducted in the form of pot experiment.� The treatment consists of 12 levels of concentration or nutrient solution electrical conductivity with the addition of potassium nitrate.� The results of experiment indicated that the concentrations of P and K in plant shoot tissue were significantly increased linearly with the provision of KNO<sub>3</sub>.� The concentration N, Ca, Mg, S, Na, Fe, Mn, Cu, Zn, Al and B in shoot tissue of plants is not affected KNO<sub>3</sub>.

scholarly journals The positive function of selenium supplementation on reducing nitrate accumulation in hydroponic lettuce (Lactuca sativa L.)

2018 ◽  
Vol 17 (4) ◽  
pp. 837-846 ◽  
Author(s):  
Bo LEI ◽  
Zhong-hua BIAN ◽  
Qi-chang YANG ◽  
Jun WANG ◽  
Rui-feng CHENG ◽  
...  
Keyword(s):  
Lactuca Sativa ◽  
Positive Function ◽  
Selenium Supplementation ◽  
Nitrate Accumulation ◽  
Lactuca Sativa L
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