Bioproducts can act on plant development in a positive, negative or neutral manner, as well as whether there is interaction of these products when used with other biological bioproducts, often used in soybeans such as Bradyrhizobium japonicum. The objective of this work was to evaluate the action of two trichoderma-based and two Bradyrhizobium japonicum-based bioformulates, combined or not, on variables in the early development of soybean plants, free of phytopathogens. The soybean cultivar Nidera 5909 was used and the treatments consisted of four commercial bioformulates, based on Trichoderma harzianum, Trichoderma sp. and two based on Bradyrhizobium japonicum, being tested in association and /or isolated for soybean seed inoculation. For the seedling emergence variable, there was no difference between the treatments tested. By analyzing the leaf variables such as leaf area, shoot length, fresh and dry shoot, the use of liquid B. japonicum results in higher averages compared to the other bioformulates. When evaluating root length, root surface area, root volume and root dry matter the use of bioformulated with Trichoderma sp. as active ingredient presented the highest averages. It was concluded that the use of Trichoderma sp. and Bradyrhizobium japonicum liquid in their isolated form, provide better initial development for soybean crop.
No abstract
The ryegrass is a winter forage specie commonly used in the south of the country in reason of its adaptability to the region climate conditions and for having the natural regeneration capacity. Therefore, the goal in the present study was to evaluate the BRS Ponteio variety ryegrass production and its protein quality under different levels of cattle manure. The experiment was carried out at the UERGS Rural Campus, located in Santana do Livramento/RS. The experimental design was the randomized blocks with three repetitions by block. The experimental unities were 4 m² land portions. The treatments were five bovine manure levels of 0, 37, 74, 111 and 148 T ha-1. Were evaluated the following characteristics: the shoot natural and dry matter, crude protein content (at 1st, 2nd, and 3rd cuts) and the leaf/stem ratio. The results showed that the use of cattle manure promoted a linear response on the natural and dry matter production in all the cuts analyzed. Also, the treatments with higher bovine manure levels showed higher crude protein content and a higher leaf/stem ratio. The highest production of natural matter, dry matter, crude protein and highest leaf/stem ratio happened in the second cut.
Os fatores edafoclimáticos exercem efeitos revelantes na produtividade da alface. A utilização do ambiente protegido propícia reduzir os estresses pelos excessos de temperaturas ou precipitações. Além disso, para suprir as deficiências nutricionais, tem sido intensificado a utilização de adubos orgânicos os quais apresentam um baixo custo comercial em relação aos adubos químicos. Em função do exposto, o trabalho foi realizado com o objetivo de avaliar o desenvolvimento da alface, submetida a um experimento fatorial 3x5, onde foram testados os seguintes fatores e seus respectivos níveis: a) Ambiente protegido: com dois tipos de coberturas termorrefletoras e uma cobertura difusora; b) Doses de cama de aviário: 0, 6, 12, 18, 24 Mg ha-1. As caraterísticas das plantas avaliadas foram as seguintes: o diâmetro, o número de folhas e a massa fresca. No solo foi avaliada a temperatura. Os resultados demonstraram que a cobertura com PEBD apresentou maior temperatura do solo, diâmetro de cabeça, número de folhas e produtividade fresca quando comparadas as demais coberturas. Houve uma resposta quadrática das variáveis analisadas a doses de cama de aviário utilizadas. Conclui-se que o cultivo de alface responde a adubação de cama de aviário sendo mais produtivo com a utilização da cobertura de PEBD.
The productivity of the strawberry fruits are extremely influenced by the management practices, especially the potassic fertilization.The use of rock can be an alternative to the use of soluble chemical fertilizers.Among the rocks supplying potassium, the granodioritognáissico. In the exhibition, the work was carried out with the objective of evaluating five doses of grannioric gnáico: 0; 3; 6; 12; 18 g pot as source of K for strawberry crop.The characteristics of the evaluated plants were as follows: fruit yield; content of K, Ca and Mg in the plant tissue and the K content in the soil. The results showed that there was a quadratic response of the strawberry production to the doses of gnáissico granodiorite reaching a dose of maximum technical efficiency of 11,7 g vase of gnáissico granodiorite. The application of gnáissico granodiorite promoted an increase in the levels of K in soil, plant tissue and strawberry fruits. It is concluded that granodiorite gnaissico can be used as a potassium source for strawberry cultivation.
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