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| Author(s): |
Silvia Maria Ferreira Carpi
Total Authors: 1
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| Document type: | Master's Dissertation |
| Press: | Piracicaba. |
| Institution: | Universidade de São Paulo (USP). Escola Superior de Agricultura Luiz de Queiroz (ESALA/BC) |
| Defense date: | 1996-02-27 |
| Advisor: | Marisa Aparecida Bismara Regitano D'Arce |
| Abstract | |
Peanut seeds from plants submitted to four different levels of calcium, applied as gypsum, in two different periods (sowing and flowering) and two ways (in the rows and spread on the ground surface), in two areas, one limed and the other not limed, totalizing 32 treatments in triplicate, randomly distributed in the field were harvested during the rainy and the dry seasons, one after the other, without any treatment, this second time. The objective of the work was to evaluate the effect of such treatments on the oil quality from the acid, peroxide and iodine values and UV absorption at 232 and 270 nm analysis performed in the cold expressed oils after harvest and 6 months of storage. Grains from the dry season showed higher oil content and those from the wet season, higher crude protein contents. In these, three of the treatments were contaminated by aflatoxin. In general, oil from the dry season presented better quality than that from the wet season. Calcium spread on the field and at the flowering stage gave better quality oil. Gypsum application, in general, had better performance than the control treatments and increasing gypsum concentrations were better during sowing and spread for the oil quality even after storage (AU) | |