Formas de mecanização e manejo do solo para a cultura da batata II - desenvolvimento vegetativo

Saito, Larissa Romão; Jadoski, Sidnei Osmar; Maggi, Marcio Furlan; Sales, L.; Suchoronczeck, Adriano

doi:10.1590/s0100-69162013000500011

Cited by 2 publications

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References 13 publications

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“…As palhadas foram coletadas em lavouras comercias no sistema plantio direto e posteriormente secadas em estufa de circulação forçada à 62 °C por 96 horas. O volume de palhada de trigo e milho foram determinadas conforme estudo realizado por Saito et al (2013), utilizandose 3 ton ha -1 para o trigo, 6 ton ha -1 para o milho, considerando a área dos vasos e dispostas superficialmente.…”

Section: Methodsunclassified

Sistema De Plantio Direto Utilizando a Bidens Pilosa Com Diferentes Profundidades De Semeadura E Influência Sob a Qualidade Fisiológica

Santos

Hendges

Bernardi

et al. 2020

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Bidens pilosa L. is a weed that directly interferes with the potential of crops, competing for water, light and nutrients, reducing quality and productivity. The adoption of management practices aims to position the crop in a competitive and advantageous situation in relation to weeds, which is an alternative to eliminate the use of herbicides. For this reason, several studies use straw on the surface of the soil, as well as efficiency in depth in the deposition of seeds, as these factors directly influence the physiology of weeds, and contribute to the maximum yield of the crops. Therefore, the present study aimed to evaluate the no-tillage system using B. pilosa at different sowing depths and the influence on the physiological quality. The experiment was conducted in a greenhouse belonging to the Pontifical Catholic University of Paraná, Campus Toledo-PR. Sowing was performed manually with 50 seeds per vase with a capacity of 5 liters, containing soil, sand and organic matter in a 2:1:1 ratio. The straws were collected in commercial crops and dried in a forced circulation oven at 62 °C for 96 hours, using 3 t ha-1 for wheat, 6 t ha-1 for corn, considering the area of the pots and arranged superficially. For seven days, the germination test (G) was performed. On the 24 th day after implantation of the experiment, emergence (E), the total length of the seedlings (TLS) and the dry mass (DM) of the seedlings were performed. The design was in randomized blocks, with a 3x4 factorial, with three types of cover (without straw, corn straw and wheat straw) and four sowing depths (0, 2, 4 and 6 cm) and four replications. The results were submitted to analysis of variance and when significant. For the non-significant interaction, the qualitative data were submitted to the Tukey test (p≤0.05) and the quantitative data, the regression test (p≤0.01) was performed in the SISVAR ® Statistical Program. However, studies on no-tillage and the correlation with sowing depths show important evaluations in the physiology of weeds, for example: germination and seedling emergence, which are growth variables that reflect on the inference of the effect of the depth of sowing and compromise the expression of seed vigor and seedling length, since they are important assessments for estimating growth and development, as well as their direct effects on crops, and from these results, attempts are made to seek solutions within alternative management, in order to reduce growth and consequently try to control weeds, in order to ensure efficiency in the yield of economically important crops. The no-tillage system using corn straw at greater sowing depths influenced the lower performance in the physiology of Bidens pilosa.

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Section: Methodsunclassified

Sistema De Plantio Direto Utilizando a Bidens Pilosa Com Diferentes Profundidades De Semeadura E Influência Sob a Qualidade Fisiológica

Santos

Hendges

Bernardi

et al. 2020

BJD

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Soil properties and agronomic attributes of potato grown under deep tillage in succession of grass species

et al. 2017

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Yield and disease incidence were evaluated in potato (Solanum tuberosum, cv. Atlantic) after six years of cultivation in succession with corn (Zea mays, cv. 'AG 6080') under conventional tillage (CT, depth of tillage: 20 cm) or in succession with three grass species [Guinea grass (Panicum maximum, cv. Tanzânia), Palisade grass (Brachiaria brizantha, cv. Marandu) and corn] under deep tillage (DT, depth of tillage: 70 cm). Total tuber yield was higher in DT in average 36% the value obtained in CT (17.76 t/ha), with no effect of the grass species. Common scab (Streptomyces scabies) incidence was influenced by treatments, the highest (16.9%) and the lowest (9.5%) values being obtained in succession with corn and Guinea grass, respectively, both under DT. The lowest incidence of tuber greening at field (2.58%) was also recorded in Guinea DT, significantly lower than obtained in Corn CT (6.33%), possibly due to a more efficient ridging operation. Grass species showed different values of aboveground dry biomass production. Guinea grass (26.56 t/ha) was the most and Corn under CT and DT (5.72 and 5.56 t/ha, respectively, without ears) were the least productive ones. Soil density, macroporosity and resistance to penetration indices were significantly better with DT, the grass species affecting them in a minor degree. The deep tillage system is, therefore, recommended for potato cultivation regardless the grass species used for crop succession.Keywords: Solanum tuberosum, compaction, soil recuperation, crop succession. RESUMOAtributos do solo e da cultura da batata em preparo profundo de solo e sucessão com poáceas A produtividade e a incidência de doenças foram avaliadas na cultura da batata (Solanum tuberosum, cv. Atlantic) após seis anos de cultivo em sucessão com milho (Zea mays, cv. 'AG 6080') sob manejo de solo convencional (CT, profundidade da operação de preparo: 20 cm) ou em sucessão de culturas com três espécies de poácea [capim Tanzânia (Panicum maximum, cv. Tanzânia), capim Marandu (Brachiaria brizantha, cv. Marandu) e milho], sob manejo profundo de solo (DT, profundidade da operação de preparo: 70 cm). A produtividade total em tubérculos para os tratamentos em DT foi, em média, 36% maior em relação ao CT (17,76 t/ha), não havendo efeito da poácea cultivada em sucessão. A incidência de sarna comum (Streptomyces scabies) foi influenciada pelos tratamentos, sendo a mais alta (16,9%) e a mais baixa (9.5%) registradas quando milho e capim Tanzânia, respectivamente, foram utilizados como cultura em sucessão, ambos sob DT. A incidência mais baixa de esverdeamento de tubérculos em campo (2,58%) foi também obtida para sucessão com capim Tanzânia sob DT, significativamente inferior ao valor obtido em milho CT (6,33%), possivelmente devido à maior eficácia da operação de amontoa. As diferentes poáceas apresentaram valores diferentes de produção de biomassa seca de parte aérea. O capim Tanzânia (26,56 t/ha) foi a poácea mais produtiva e o milho sob CT e DT (5,72 e 5,56 t/ha, respectivamente, sem considerar as esp...

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Formas de mecanização e manejo do solo para a cultura da batata II - desenvolvimento vegetativo

Cited by 2 publications

References 13 publications

Sistema De Plantio Direto Utilizando a Bidens Pilosa Com Diferentes Profundidades De Semeadura E Influência Sob a Qualidade Fisiológica

Sistema De Plantio Direto Utilizando a Bidens Pilosa Com Diferentes Profundidades De Semeadura E Influência Sob a Qualidade Fisiológica

Soil properties and agronomic attributes of potato grown under deep tillage in succession of grass species

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