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Made available in DSpace on 2022-04-30T23:21:33Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-01-01 Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Considered an agricultural input by the Ministry of Agriculture and Supply, homeopathy has been increasingly used in agriculture, especially in plants. It is an important technology to be adopted to reverse a framework of saline stress, because since the current procedures are little known, have hight costs and resources are not renewable. The present study aims to evaluate the effect of the homeopathic preparation Natrum muriaticum (Nat-m) on agronomic performance and physiological parameters of cherry tomatoes submitted to saline stress. The statistical design was a completely randomized design with eight treatments and five replications. The treatments consisted in the application of Nat-m 3cH, 5cH, 7cH, 9cH, 11cH, 13cH and two controls: etanol 70% and distilled water. They were conducted in a greenhouse and the treatments were applied weekly. Satisfactory results were observed with the applications of Nat-m 11cH and 13cH, with a significant increase in the characteristics such as height, diameter of the lap, number of leaves, number of flowers per cluster, number of fruits, fresh fruit mass, as well as on the productivity of tomato plants. Lower averages of the proline content were obtained with the application of these homeopathic preparations, this response may be associated with the osmotic adjustment promoted by the use of ultradiluitions. Natrum muriaticum positively affected the vegetative and reproductive development of cherry tomato plants submitted to saline stress. Universidade Estadual Paulista Universidade Estadual Paulista

Made available in DSpace on 2022-04-30T08:00:06Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-04-01 The current work aimed at evaluating the influence of withholding irrigation on biomass production, content, yield and chemical composition of mint essential oil. The experimental design was completely randomized with five treatments and eight repetitions; totally forty plots; being conducted in pots inside a greenhouse for 58 days. The treatments consisted of withholding irrigation (NS) at different levels: control (daily constant irrigation at day zero by withholding irrigation), light NS (withholding irrigation for three days before harvesting), intermediate NS (withholding irrigation for six days before harvesting), severe NS (withholding irrigation for nine days before harvesting) and very severe NS withholding irrigation for twelve days before harvesting). Then, the following characteristics were evaluated: shoot fresh mass (SFM), shoot dry mass (SDM), root fresh mass (RFM), root dry mass (RDM), root volume (RV), conten, yield and chemical composition of mint essential oil. Results indicated that some characteristics were affected by withholding irrigation, such as SFM RFM, RDM, RV and some essential oil components (i.e. 3-octanol; linalool; limonene; p-cymen-8-ol; 3-octanol, acetate; cis-β-ocimene and cis-Piperitone epoxide). However, there was no significant difference between content and yield. Therefore, the current study showed that suppressing irrigation for 12 days before harvesting (very severe NS) did not affect plant development, since mint is commercialized in dry form. Department of Horticulture School of Agriculture Sao Paulo State University Plant Genetic Resources Center Agronomic Institute of Campinas (IAC) Department of Horticulture School of Agriculture Sao Paulo State University