SUPERAÇÃO DE DORMÊNCIA EM Brachiaria humidicola COM ÁCIDO SULFÚRICO EM DIFERENTES ESTÁGIOS DE ARMAZENAMENTO

Alves, Alline Mendes

doi:10.5747/ca.2017.v13.nesp.000193

Cited by 1 publication

(1 citation statement)

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“…Urochloa humidicola (Rendle) Morrone & Zuloaga is an efficient forage which protects against soil against erosion by producing a large number of stolons (Alves et al, 2017). This species has greater tolerance than other U. species to acidic, low-fertility, and poorly drained soils, it shows resistance to intense grazing and has a greater capacity for establishment in new areas (Alves et al, 2017;Euclides et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Potassium nitrate to overcome dormancy of Urochloa humidicola Comum seeds

Pereira

Jeromini

Neves

et al. 2021

Semina: Ciênc. Agrár.

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The main difficulty with propagating Urochloa humidicola Comum is the high percentage of seed dormancy. Thus, the objective of this study was to develop a treatment to overcome seed dormancy and promote seed germination of this species that can be applied at a large scale. This study was conducted in two stages. First, the following treatments were evaluated using one seed lot: control (without treatment), immersion in H2SO4 (98%, 36N) for 10 min, moistening the germination substrate with KNO3 (0.2%) and immersion in KNO3 at concentrations of 0%, 2%, 4%, 6%, and 8% for periods of 12, 24, 36, and 48 h, followed by drying in the shade. In the second stage, three seed lots were evaluated in all of the aforementioned treatments, except for those of immersion in 0% KNO3 and of all concentrations for 36 and 48 h. The seeds were evaluated for water content, germination, percentage of abnormal seedlings, dead and dormant seeds, first count, and average germination time. Immersion in the KNO3 solution was efficient in overcoming dormancy and promoting germination. To be used by companies, the immersion of seeds in a 4% KNO3 solution for 24 h was the most suitable treatment to overcome dormancy and promote the germination of U. humidicola Comum seeds.

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Section: Introductionmentioning

confidence: 99%