Instituto de Ciências da Natureza, Universidade Federal de Alfenas, Alfenas, MG, 37130-000, Brazil.
Laboratório de Solos e Tecido Vegetal, Cooperativa Regional de Cafeicultores em Guaxupé, Guaxupé, MG, 37800-000, Brazil.
Sci Rep. 2024 Sep 4;14(1):20539. doi: 10.1038/s41598-024-66040-x.
The objective was to evaluate the biosolids as an alternative source of nutrients in the production of chrysanthemums by adding increasing doses to the cultivation substrate. The experimental design was in blocks with 6 treatments and 5 replications. The treatments consisted of the mixture (commercial substrate + biosolid) at the concentrations: 20%, 40%, 60% and 80% of biosolid + two controls (100% of biosolid and 100% of substrate). The experiment was conducted in a greenhouse for 90 days. Physiological parameters, number of flower buds, dry biomass and nutrient accumulation were evaluated. Physiological parameters were evaluated using the Infrared Gas Analyzer. The number of flower buds was evaluated by counting. Biomass was determined after drying the structures and then calculated the accumulation of nutrients. A total of 90 plants were evaluated. Concentrations of up to 40% of biosolid promoted a greater number of flower buds, dry biomass and nutrient accumulation. Concentrations above 60% lower number of buds, biomass increment and nutrient accumulation. It is concluded that the biosolid has potential as an alternative source of nutrients in the cultivation of chrysanthemums, indicating concentrations of up to 40% and the nutrient content of each batch generated must be verified.
目的是通过向栽培基质中添加递增剂量的生物固体来评估生物固体作为菊花生产中养分的替代来源。实验设计为分块，有 6 个处理和 5 个重复。处理包括混合物（商业基质+生物固体），浓度为：生物固体+两个对照（100%生物固体和 100%基质）的 20%、40%、60%和 80%。实验在温室中进行了 90 天。评估了生理参数、花蕾数、干生物量和养分积累。使用红外气体分析仪评估生理参数。通过计数评估花蕾数。生物量在干燥结构后确定，然后计算养分积累。共评估了 90 株植物。生物固体浓度高达 40%可促进更多花蕾、干生物量和养分积累。浓度高于 60%时，花蕾数、生物量增加和养分积累减少。结论是生物固体作为菊花栽培中养分的替代来源具有潜力，表明浓度高达 40%，并且必须验证每批生成的养分含量。
