Consórcio de alface e milho verde sobre cobertura viva e morta em plantio direto

Nespoli, Andre; Júnior, Santino Seabra; Dallacort, Rivanildo; Purquerio, Luís Felipe Villani

doi:10.1590/s0102-053620170323

Cited by 5 publications

(3 citation statements)

References 11 publications

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“…In the no-tillage system, the largest plant diameters were observed at the spacings of 25 x 25 and 30 x 30 cm, with mean values of 27.94 and 28.36 cm, respectively, while the smallest diameter was observed at the spacing of 20 x 20 cm (24.09 cm). These results are lower than those found by Nespoli et al (2017) with the lettuce cultivar 'TE 112' , whose diameter was 35.6 cm under no-tillage system with millet and 33.1 cm under conventional planting, at the spacing 30 x 30 cm between plants. The larger plant diameter found by the authors may be related to the environmental conditions of the region of Cáceres, MT, Brazil.…”

Section: Resultscontrasting

confidence: 67%

No-tillage curly lettuce cultivated under different spacings

Cecconello

Trogello

Ferro

et al. 2020

Rev. bras. eng. agríc. ambient.

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The use of appropriate cultural practices is important for the sustainability of the production system. This study aims to evaluate the agronomic performance of lettuce cultivar 'Mônica' , during two crop cycles, at the Instituto Federal Catarinense, Campus of Concórdia, SC, Brazil. Two experiments were conducted in the field, arranged in randomized block design, in a 3 x 2 factorial scheme, evaluating the effects of three spacings (0.20 × 0.20, 0.25 × 0.25 and 0.30 × 0.30 m), associated with two planting systems (conventional and no-tillage with millet), with four repetitions in the first cycle and five in the second. At 39 and 44 days after transplanting, six plants were harvested in the first and in the second cycles, respectively. Soil temperature, fresh and dry mass of the spontaneous plants, dry mass of roots, plant diameter, number of marketable leaves, fresh and dry mass of the plants were evaluated. Lettuce cultivated under no-tillage at larger spacings resulted in higher yield per plant, but higher yield per area was observed at smaller spacing. No-tillage reduced spontaneous plants and soil temperature in the West of Santa Catarina.Plantio direto de alface crespa cultivada com diferentes espaçamentos RESUMO: O uso de práticas culturais adequadas é importante para a sustentabilidade do sistema de produção. Este estudo objetiva avaliar o desempenho agronômico da cultivar de alface 'Mônica' , durante dois ciclos de cultivo, no Instituto Federal Catarinense, Campus Concórdia, SC. Foram conduzidos dois experimentos no campo, dispostos em blocos casualizados, em esquema fatorial 3 x 2, sendo avaliados os efeitos de três espaçamentos (0,20 × 0,20; 0,25 × 0,25 e 0,30 × 0,30 m), associados a dois sistemas de plantio (convencional e plantio direto com milheto), com quatro repetições no primeiro ciclo e cinco no segundo. Decorridos 39 e 44 dias após o transplante foi feita a colheita de 6 plantas centrais no primeiro e no segundo ciclo, respectivamente. Foram avaliados a temperatura do solo, massa fresca e seca das plantas espontâneas, massa seca das raízes, diâmetro da planta, número de folhas comerciais por planta, massa fresca e seca das plantas. A alface cultivada em plantio direto em espaçamentos maiores obteve maior produtividade por planta, contudo, maior produtividade por área foi observada em menor espaçamento. O plantio direto reduziu as plantas espontâneas e a temperatura do solo no Oeste Catarinense. Palavras-chave:Lactuca sativa L., milheto, plantas espontâneas, produtividade

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Section: Resultscontrasting

confidence: 67%

No-tillage curly lettuce cultivated under different spacings

Cecconello

Trogello

Ferro

et al. 2020

Rev. bras. eng. agríc. ambient.

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“…caused by high leaf Zn content obtained in the highest doses evaluated (Figure 1A). Other studies (Queiroz et al 2014;Nespoli et al 2017) reported a higher number of leaves than the present study. Although the plant size influences the choice of the consumer market, the search for a healthier lifestyle is increasingly part of the routine of Brazilians.…”

Section: /9contrasting

confidence: 67%

Agronomic biofortification with zinc in curly lettuce cultivars

Graciano

Jacinto

Silveira

et al. 2020

Agraria

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In underdeveloped countries, zinc deficiency is a public health problem. The main foods consumed in these countries have low levels of the nutrient, making their consumption insufficient to meet the minimum daily requirements. Therefore, the aim of this study was to evaluate agronomic biofortification with zinc in curly lettuce cultivars. The experiment was carried out at the Universidade Federal de Uberlândia -Monte Carmelo Campus, using a complete randomized block design in a 4 × 5 factorial scheme with four replications. The factors consisted of four curly lettuce cultivars (Brida, Isabela, Thaís, and Vanda) and five doses of leaf zinc (0, 400, 800, 1200 and 1600 g ha -1 of Zn). The following traits were evaluated: zinc leaf content, plant height, SPAD index, total fresh mass, stem diameter, head diameter, number of leaves per plant, and estimated average yield. Data were subjected to analysis of variance by the F test (α = 0.05) and means were compared by Tukey test at 5% probability and regression analyzes. According to the results obtained, the cultivar Thaís can be considered the lettuce with highest leaf zinc content and the most biofortified. It is advisable to use 700 g ha -1 of leaf zinc to obtain biofortified lettuce with increased yield.

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“…Fonte: Os autores Verifica-se que o sistema de plantio direto diferiu do sistema de plantio convencional e cultivo mínimo. Resultados semelhantes foram encontrados por Nespoli et al, (2017), onde foi obtido maior número de folhas totais e comerciais nas plantas de alface cultivadas sob o plantio direto com cobertura morta. No entanto, o número de folhas está relacionado, com cerca de 90%, da massa seca acumulada pelas plantas durante o seu crescimento, o que é um resultado da atividade fotossintética exercida pelo vegetal (Ferreira, 2013).…”

Section: Resultsunclassified