Effect of Organic Fertilizer Doses on the Plant Growth,Essential Oil Production and Chemical Substances of "Carqueja" over Two Harvest Moments

查看全文 作　　者：Daniel [1]Garcia;Paulo Sérgio Siberti da [1]Silva;Marcos Roberto [2]Furlan;Monica Tiho Chisaki [3]Isobe;Marcia Ortiz May [4]Marques;Lin Chau [1]Ming 机构地区：[1]Horticulture Department, Faculty of Agronomic Sciences (FCA), Sao Paulo State University 'J~lio de Mesquita Filho',18.610-307, Botucatu, Sao Paulo, Brazil;[2]Agronomy Department, Cantareira Faculty (FIC), 03.020-000, Sao Paulo, Brazil;[3]Agronomy Department, University of Mato Grosso State, 78.200-000, Caceres, Mato Grosso, Brazil;[4]Natural Products Department, Agronomic Institute of Campinas (IA C), 13.001-970, Campinas, Sao Paulo, Brazil 出　　处：《Journal of Agricultural Science and Technology(B)》索引2017年第7卷第2期,共11页 摘　　要：This study aimed to investigate, for the first time, the plant growth, essential oil content and their chemical substances ofBaccharis trimera (Less.) DC., the first Brazilian variety of medicinal plant, in response to five doses of organic fertilizer (0, 10, 20,30, 40 and 50 ton/ha) over two harvest moments-120 d and 242 d after transplanting (DAT). The work was carried out fromFebruary to October 2011 at the experimental farm of the Sao Paulo State University "Julio de Mesquita Filho" (UNESP), Brazil.The seedlings of B. trimera var. CPQBA-1 were respectively transplanted into experiment plots under six treatments: 0, 10, 20, 30,40 and 50 ton/ha of organic fertilizer. Each treatment had four replications and each plot consisted of 12 plants. Then they wereharvested at 120 DAT and 242 DAT, and the essential oil were extracted by hydrodistillation and analyzed by gas chromatograph.The results were subjected to analysis of variance and the means were analysed using Tukey's test (5%) followed by a regressionanalysis. The fertilizer dose significantly influenced the height of the plants in the second harvest, while the higher dose of organicfertilizer positively impacted the essential oil content in the first harvest. Also, the level of organic fertilizer was directly correlatedwith the production of dry matter during the regrowth. Twenty-seven substances were identified in the essential oil samples, and themajor components were: bicyclogermacrene, trans-caryophyllene, germacrene-D, spathulenol and caryophyllene oxide. Thesefindings suggest that to obtain higher yields of dry matter ofB. trimera, it should be harvested around 242 DAT and organic fertilizershould be applied approximately to 50 ton/ha. Furthermore, higher doses of organic fertilizer and harvest at 120 DAT is able toincrease the essential oil content. 关 键 词：BACCHARIS trimera, BRAZILIAN MEDICINAL plant, dry matter, CHEMICAL substances, bicyclogermacrene.