Altura de planta e diâmetro de colmo em cana-de-açúcar de segundo corte fertilizada com organomineral de lodo de esgoto e bioestimulante Height of plant and thermal diameter in second cut sugar fertilized with organomineral of sewage sludge and bioestimulant
The dependence of mineral fertilizers, increasingly, has brought concern facing the increased demand and because it is a non-renewable mineral resource. The organic fertilization, exclusively, it is impractical in large scale, however, the combination of organic and mineral sources have already proved to be feasible, both from the point of view of nutrition of plants as well as in the aspect of recycling of urban and industrial waste by agriculture. This research had as objective to determine the efficiency of aorganomineral fertilizer formulated on the basis of sewage sludge in substitution of mineral fertilizer in the cultivation of sugar cane in environments with different levels of soil fertility. An experiment was conducted in greater soil fertility, in the Institute Federal Goiano– Campus, Morrinhos-GO, Brazil. The other, less soil fertility, was implanted in the ethanol industry Tijuco Valley, located in Rio do Peixe, district of Prata-MG, Brazil. The experimental design was randomized blocks in a factorial 5 x 2 +1 being five doses, with and without a biostimulant plus an additional with mineral fertilization, in four replications. The doses were in function of fertilization recommendation of planting and coverage for each environment, consisting of: 100 % of the mineral source and percentage 0; 60; 80; 100 and 120 % of organomineral fertilizer. We evaluated the productivity, tillering, diameter and height of stem in Prata-MG the different percentages of the fertilization of planting favored and increased productivity, height and stem diameter of sugar cane; the use of biostimulants not contributed to increase crop yield. In Morrinhos-GO, the different percentage of planting fertilization did not increase the productivity, tillering, height and diameter of the sugarcane stem; the use of biostimulants increases the productivity yield of sugarcane. Organomineral fertilizer based on biosolids is similar to fertilization with mineral fertilizer in environments.
A acidez do solo é fator limitante na agricultura, pelo fato da mesma indisponibilizar o fósforo na solução do solo e influenciar na dinâmica dos demais nutrientes no solo. A utilização de silicato de cálcio (Ca) e magnésio (Mg) fornece silício (Si) e corrige a acidez do solo aumentando a produtividade. O objetivo do estudo foi observar a produção do quiabeiro e as características químicas do solo em função da aplicação de diferentes doses de silicato de cálcio e magnésio. Utilizou-se o delineamento em blocos casualizados com cinco tratamentos e cinco repetições cultivado em 2014 e 2016. O silicato de cálcio e magnésio foi aplicado ao solo nas seguintes doses: 0; 0,5; 1,0; 2,0 e 4,0 t ha-1. Foram avaliados o peso de fruto por planta, peso médio de frutos, número de frutos por planta, produtividade, e os teores de Si, Ca, Mg e pH do solo. Não há acréscimos nos componentes do rendimento e produtividade do quiabeiro com o fornecimento de silicato de cálcio e magnésio em solo com boa fertilidade. O silicato de cálcio e magnésio reduz a acidez do solo e aumenta os teores de Ca, Mg e Si disponíveis no solo.
Brazil is the world's largest producer of sugarcane, the main raw material used for the production of alcohol and sugar. The crop to achieve good levels of productivity demands high amounts of nutrients, which are usually supplied by the use of mineral fertilizers. An alternative for efficient fertilization is through the use of organomineral fertilizers. Such fertilizers consist of the mixture of organic fertilizers of animal or vegetable origin, and mineral fertilizers that undergo industrial processing. The industrial advance associated with the population increase has generated a large amount of solid waste and wastewater. One way to reduce the effects of environmental pollution from the presence of these solid wastes is through their treatment, giving rise to a pasty material, known as sewage sludge. Sewage sludge presents the potential to be used in the mineral nutrition of plants, both as fertilizer and as a soil conditioner. Biostimulants are natural or synthetic substances that can be applied directly to plants to increase yield and quality of crops of economic interest. Thus, the present review aims to report the study on the use of organomineral fertilizers from sewage sludge and biostimulant in sugarcane cultivation.
Diatraea saccharalis, (Fabr.) (Lepidoptera: Crambidae) em cana-deaçúcar de segundo corte fertilizada com organomineral de lodo de esgoto e bioestimulante Diatraea saccharalis, (Fabr.) (Lepidoptera: Crambidae) in second-cut sugarcane fertilized with sewage sludge organomineral and biostimulant
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