Efeito da época do corte de vegetação nos componentes de rendimento de sementes de cornichão.

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Relationship between the morphogenesis of Italian ryegrass cv. 'BRS Ponteio' with forage and seed production.

This study aims to verify, accurate and precisely, the responses of Italian ryegrass 'BRS Ponteio' cultivar to different frequencies of defoliation for forage production and especially for seed production. For this purpose, a randomized block design experiment with four replications was conducted. Four frequencies of defoliation were applied (zero, one, two, and three) based on the thermal sum, evaluating the rate of leaf appearance (LAR), phyllochron (P), leaf expansion rate (LER), leaf senescence rate (LSR), stems expansion rate (SER), tillering rate (TR), leaf life span (LL), forage production, proportion of leaf blades, stems plus sheaths, senescent material, and inflorescences, as well as seed production. Second defoliation noticeably altered the morphogenic plant responses, reduced expansion rates and leaf appearance, increased rates of tillering and stems expansion. This phenotypic maintained a high seed production and provided a harvest of forage mass 100% higher than the collected mass in the first cutting. Third defoliation led to an increase of 100% of the harvested forage mass; however, it caused drastic and negative changes in the morphogenic characteristics and seed yielding

Afibrinogenemia secundária a acidente ofídico crotálico (Crotalus durissus terrificus)

This paper reports two cases of afibrinogenemia with normal platelet count following Crotalus durissus terrificus, snake bite Both patients presented high output acute renal failure and case two also had increased blood levels of CPK and LDH compatible with the diagnosis of rhabdomyolysis. Case one was given an unknown amount of antivenom and was treated with epsilonaminocaproic acid and a fresh whole blood transfusion and showed recovery of the coagulation disturbance 40 hours following these measures. Case two was given an adequate amount of crotalide antivenom and the coagulation tests performed 12 hours later showed a normal partial thromboplastin time and fibrinogen 86 mg/100ml. Case one presented no haemorrhagic disturbances. Case two presented persistent bleeding following venopuncture and after removal of impetigo crust in the legs. Acute renal failure was treated conservatively and both patients were discharged from the hospital with recovery of the renal function.Relatam se os casos de dois pacientes que desenvolveram afibrinogenemia sem consumo de plaquetas após terem sido picados por Crotalus durissus terrificus. Ambos também tiveram insuficiência renal aguda de alto débito e no caso nº 2 foi feito o diagnóstico de rabdomiólise através da elevação expressiva dos níveis séricos de CPK e DHL. O caso nº 1 recebeu dose não especificada de antiveneno e foi tratado com ácido épsilon-aminocaproico e transfusão de sangue fresco total tendo apresentado normalização dos testes de coagulação 40 horas após estas medidas. O caso nº 2 recebeu dose adequada de antiveneno crotálico e 12 horas depois já evidenciava recuperação do distúrbio da coagulação. O caso nº 1 evoluiu sem apresentar hemorragias. O caso nº 2 apresentou sangramento persistente nos locais de venóclise e após remoção de crostas de impetigo nas pernas. Ambos receberam tratamento conservador para a insuficiência renal aguda e tiveram alta com recuperação da função renal

Temperatura base e soma térmica do subperíodo semeadura emergência do capim sudão.

O capim sudão (Sorghum sudanense) é uma poácea que está em expansão da área cultivada no Rio Grande do Sul. A cultivar BRS Estribo foi lançada oficialmente em 2013 pela Embrapa Pecuária Sul e é uma nova alternativa de cultura de verão para pecuaristas do sul do Brasil, portanto, há uma grande demanda de informações sobre o desenvolvimento fenológico uma vez que o conhecimento das fases fenológicas das pastagens podem ajudar o produtor a planejar o pastejo e obter melhores rendimentos

Características fisiológicas de sementes de trevo-alexandrino e trevo-vesiculoso e necessidade de escarificação.

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Structural dynamic of the annual ryegrass from defoliation to seeds harvest.

The aerial part distribution and arrangement can significantly affect the forage resource?s use, both for the leaves and seeds harvesting. This work aimed to verify the structure derived from different times of pasture use and the subsequent seeds production in a long-cycle ryegrass cultivar. Weekly assessments of number and length of living leaves, elongation of the internodes, tillering, plants? height, structural components (leaf, stem, flower, and dead material), seeds yields components, and seeds yield, to determine the pasture structure along its production cycle. The ryegrass cv BRS Ponteio pasture had its structure significantly modified just after 150 days (thermal sum: 1303 degrees-days) from seeding without the defoliation. Defoliation during the vegetative period did not alter the plants? structure until the seeds? production. Defoliation just after the beginning of the internodes? elongation caused a significant tillering growth, which maintained the high seeds production potential, without plants lodging, besides promoting a more significant leaves harvesting. Subsequent pasture use determined predominant stems and flower harvesting, compared to the leaves, and the significant reduction of the production seeds and potential seeds production