Produção de cultivares de alface americana sob dois sistemas de cultivo

Brzezinski, Cristian Rafael; Abati, Julia; Geller, Alexsandro; Werner, Flávia; Zucareli, Claudemir

doi:10.1590/0034-737x201764010012

Cited by 33 publications

(34 citation statements)

References 13 publications

(19 reference statements)

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“…Concerning stem length, our results were superior to those reported by Brzezinski et al (2017). The authors found an average value of 2.54 cm for stem diameter when studying the production of lettuce from Angelina, Rubette, Great Lakes 659 and Tainá varieties in open field.…”

Section: Resultscontrasting

confidence: 89%

Nitrogen Fertigation in Lettuce Culture

Pedrilho¹,

Fernandes²,

Costa

et al. 2020

JAS

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Lettuce (Lactuca sativa L.) is the most consumed vegetable in the world and in Brazil, representing as an important dietary source of vitamins, fiber and minerals to population. The aim of this study was to evaluate the yield of lettuce against nitrogen doses applied via fertigation, as well as the quality of the administered fertilizer solution. The test was carried out in an agricultural area located in the Doutor Camargo municipality, Northwestern of Paraná State, Brazil. The experiment was designed in a completely randomized design with seven treatments: T1 control -0 kg ha -1 urea (0 kg N ha -1 ); T2 -25 kg ha -1 urea (11.25 kg N ha -1 ); T3 -50 kg ha -1 urea (22.5 kg N ha -1 ); T4 -75 kg ha -1 urea (33.75 kg N ha -1 ); T5 -application of 100 kg ha -1 urea (45 kg N ha -1 ); T6 -125 kg ha -1 urea (56.25 kg N ha -1 ); T7 -150 kg ha -1 urea (67.5 kg N ha -1 ). Each treatment had six repetitions. Seeds from Dora (American lettuce) and Vera (curly lettuce) varieties were used for seedling production. Nutrients were applied to the crop by fertigation at 15 and 30 days after transplanting the seedlings to the seedbeds. Fresh shoot mass (weight), stem diameter, root length and productivity were assessed. Results showed that nitrogen fertilization via fertigation significantly influenced the growth and yield variables of plants from both Dora and Vera varieties.

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Section: Resultscontrasting

confidence: 89%

Nitrogen Fertigation in Lettuce Culture

Pedrilho¹,

Fernandes²,

Costa

et al. 2020

JAS

View full text Add to dashboard Cite

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“…Lettuce (Lactuca sativa L.) is the most important leafy green vegetable in Brazil and in the world (Brzezinski et al, 2017;Yuri et al, 2017). According to Queiroz, Cruvinel and Figueiredo (2017), the current lettuce crop area in Brazil occupies approximately 35,000 hectares, and approximately 60% of the national market is occupied by cultivars that have curly lettuce leaves (Valeriano et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Estimates of genetic parameters of pigments and agronomic traits in green and purple lettuce

et al. 2019

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Understanding genetics and the gene interactions involved in the expression of certain characteristics becomes a determining factor for better exploration of its use. The development of breeding programs that combine one or more desirable trait into a single cultivar is directly impacted by this lack of knowledge of the genetic bases involved. The objective of the present study was to estimate the genetic parameters involved in pigment expression and agronomic characteristics in lettuce. Parental evaluations of lettuce, P1 (green) and P2 (purple) parental generations, the segregating generations F1 and F2, and the backcrosses Bc1 and Bc2 originating from the UFU-Crespa199#1#1 x UFU-Albina#2 crossing were evaluated. The chlorophyll and anthocyanin contents, number of leaves and plant diameter were evaluated. The study was conducted by testing all generations and the estimates obtained by averages and variances. Indications of polygenic or oligogenic inheritance were verified by the characteristic number of leaves, plant diameter, and anthocyanin content. The complete and additive-dominant models satisfactorily explained the performance of the variables, except the anthocyanin content.

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“…Brzezinski et al (2017) destacam que, além das características do sistema de produção, a altura das plantas da cultura da alface também pode variar de acordo com as características genéticas distintas de cada cultivar, em relação ao tamanho médio de plantas.…”

Section: Tratamentosunclassified

Produção de alface sob plantio direto em sistema de transição agroecológica

Girardello¹,

Silva²,

Guerra³

et al. 2017

Revista Verde

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Sistemas de produção em transição agroecológica, especialmente em propriedades agrícolas familiares, podem ser considerados como um importante passo para o alcance de um novo modelo de desenvolvimento baseado na Agroecologia. Nesta perspectiva, é de fundamental importância o uso de práticas de manejo ecologicamente adequadas que visem à conservação do solo e dos recursos naturais. Assim, objetivou-se avaliar a influência da prática da adubação verde e a produção de massa verde de leguminosas e gramíneas, bem como de seus consórcios em sistema de plantio direto na produção de massa fresca e na altura da cultura da alface (Lactuca sativa) em sistema de transição agroecológico, em uma propriedade rural familiar, no município de Alpestre no Rio Grande do Sul. Os tratamentos foram compostos pelo cultivo de leguminosas e gramíneas em solteiro e consórcio para uso como adubação verde, sendo testada aveia preta (Avena strigosa), ervilhaca comum (Vicia sativa), tremoço branco (Lupinus albus), consórcio aveia preta + ervilhaca comum, consórcio aveia preta + tremoço branco e testemunha (pousio). Como resultados, em relação à produção de massa verde todas as espécies de adubação verde estudadas foram superiores em relação à testemunha (pousio). A maior produção de massa fresca da cultura da alface em plantio direto ocorreu sobre o consórcio aveia preta + ervilhaca, em relação à testemunha. A maior altura das plantas de alface foi obtida nos tratamentos ervilhaca comum, aveia preta + ervilhaca e aveia preta + tremoço branco, em relação à testemunha. Portanto, o uso de plantas de adubação verde contribuem para a produção de massa fresca e altura da cultura da alface em sistema de transição agroecológica.Lettuce production under plantation direct in agroecological transition system<pre>Abstract: Agroecological transition production systems, especially on family farms, can be considered as an important step towards the achievement of a new development model based on Agroecology. In this perspective, it is of fundamental importance the use of ecologically appropriate management practices that aim at the conservation of soil and natural resources. The objective of this study was to evaluate the influence of the practice of green manuring and of green mass production of legumes and grasses, as well as their consortia in no-tillage system in fresh mass production and at the time of lettuce cultivation (Lactuca sativa) in an agroecological transition system in a family farm in the municipality of Alpestre in Rio Grande do Sul (Brazil). The treatments were composed by the cultivation of legumes and grasses in single and consortium for use as green manure, being tested black oats (Avena strigosa), common vetch (Vicia sativa), white lupine (Lupinus albus), black oat consortium + common vetch, consortium oats black + white lupine and control (fallow). As results, in relation to the production of green mass, all species of green manure studied were superior to the control (fallow). The highest fresh mass production of lettuce under no-tillage occurred on the black oat + vetch consortium in relation to the control. The highest height of the lettuce plants was obtained in the treatments common vetch, black oat + vetch and black oat + white lupine, in relation to the control. Therefore, the use of green manuring plants contribute to the production of fresh mass and height of the lettuce crop under no-tillage system.</pre>

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Produção de cultivares de alface americana sob dois sistemas de cultivo

Cited by 33 publications

References 13 publications

Nitrogen Fertigation in Lettuce Culture

Nitrogen Fertigation in Lettuce Culture

Estimates of genetic parameters of pigments and agronomic traits in green and purple lettuce

Produção de alface sob plantio direto em sistema de transição agroecológica

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