Mauro Brasil Dias Tofanelli

Método de aplicação de ácido indolbutírico no enraizamento de estacas herbáceas de pessegueiro

The objective of this experiment was to evaluate the effect of the application method of indole-butyric acid (IBA) on rooting of peach herbaceous cuttings. The peach cultivars used were Delicioso Precoce, Joia 1 and Okinawa. The cuttings were taken in September, 2001 and after the preparing, they were treated with 0, 1250, 2500 and 3750mg.L-1 of IBA for 5 seconds (concentrated solutions) and 0, 100, 200, 300mg.L-1 of IBA for 24 hours (diluted solutions). The best results of rooting were obtained with cultivar Joia 1 (37,3%), although it was statistically equal to Okinawa (20,8%), both treated with concentrated solutions. Generally, concentrated solutions showed the best results of the evaluated parameters in this work.

Enraizamento de estacas lenhosas e semilenhosas de cultivares de ameixeira com várias concentrações de ácido indolbutírico

To evaluate the rooting potential of hardwood and softwood stem cuttings of four plum cultivars (Carmesin, Gema de Ouro, Januaria, e Reubennel), was used exogenous applications of indolbutyric acid (IBA) in different concentrations (0, 1000, 2000 and 3000mg L-1). The experimental was carried out at Universidade Federal de Lavras (Lavras, MG, Brazil) in 1997. After the treatments, the cuttings were planted in washed-sand. The hardwoods cuttings were placed in shade-house and the softwoods cuttings in greenhouse. Were evaluated the rooting percentage, root number and root length. The best results were obtained with softwood cuttings of the cultivar Januaria (54,62%). The rooting formation, root number and root length of the softwood cuttings were influenced by IBA.

Enraizamento de estacas lenhosas de pessegueiro cv. Okinawa em diferentes diâmetros de ramos, substratos e recipientes

This work was carried out at the Department of Plant Production/Horticulture of the Faculdade de Ciencias Agronomicas (FCA) of the Universidade Estadual Paulista (UNESP) located in Botucatu (SP, Brazil). The purpose of this study was to evaluate the influence of substrate and pot type on rooting of stem hardwood cuttings of peach cultivar Okinawa with different diameters. The cuttings were treated with 2.5g L-1 of IBA. The cuttings were maintained in greenhouse for 50 days. The treatments consisted of the combination of six substrate compositions: sand, carbonized rice husk, vermiculite, sand + carbonized rice husk, sand + vermiculite, and carbonized rice husk + vermiculite, mixture at proportion 1:1v/v and three types of pots: plastic bags, polystyrene trays, plastic trays and two groups of cutting diameter: 2 to 6mm and 6 to 10mm. The highest rooting frequency was obtained with plastic bag, and vermiculite independent of cutting diameter.

2,6-di-hidroxiacetofenona no enraizamento de estacas semilenhosas de pessegueiro

The peach propagation in Brazil is basically by grafting of cultivar on peach rootstocks propagated by seeds. An alternative for peach propagation could be by cutting. The objective of this work was to evaluate the peach rooting potential by semi-hardwood cutting throughout 2,6-di-hydroxyacetophenone (2,6-DHAP). Semi-hardwood steams of peach Delicioso Precoce, Joia 1 and Okinawa cultivars were taken in December, 2001. The cuttings were prepared and treated with 0 and 300mg L-1 2,6-DHAP for four hours in aeration and after they were treated with indol-butyric acid (IBA) (200mg L-1 and 2500mg L-1). The cuttings were planted in polystyrene trays with vermiculite as substrate, and put into the greenhouse for 45 days. The application of 300mg L-1 2,6-DHAP applied before the application of 200mg L-1 IBA in peach semi-hardwood cuttings showed significantly increasing on the characteristics for cutting propagation studied in the present work and this technique can be interesting for peach propagation by cutting.

AVALIAÇÃO DAS PERDAS DE FRUTAS E HORTALIÇAS NO MERCADO VAREJISTA DE MINEIROS-GO: UM ESTUDO DE CASO

The objective of this work was to evaluate losses of fruits and vegetables on the market of the Mineiros city (Goias State, Brazil), as well as its causes. The research was done at different retail equipments (supermarkets, groceries stores and street market) by questionnaire application from December 2005 to January 2006. The results showed week total losses of 2.9% for fruits and vegetables. Supermarkets and groceries stores losses (2.1% and 4.0%, respectively) were lower than the street market ones (15.9%). Peach (50.0%), plum (14.7%), summer squash (9.0%), papaya fruit (7.2%), nectarine (7.1%), tomato (6.2%), pineapple (6.0%) and banana (5.2%) showed medium to high rates of losses over the total volume commercialized at the different markets. The results showed that inadequate storage are the main causes of fruit and vegetable losses in the Mineiros retail trade. Although there are low losses of fruit and vegetables on the Mineiros market improvement could be done to adequate handling system and postharvest facilities to reduce that losses.

Perdas de frutas frescas no comércio varejista de Mineiros-GO: um estudo de caso

The present work had as objective to carry through survey the losses of fresh fruits in the retail markets of the city of Mineiros-GO, as well as its causes and steps to be taken. For this research, visitation to the retail markets (supermarkets, groceries stores and street market) for an application of a questionnaire was realized. The results showed that 3.2% of the volume of fruits commercialized in Mineiros are lost weekly and that the supermarkets, being the main retail markets, are predominant in the volume of losses. The retail markets had cited the inadequate storage (refrigeration lack) and the bad conditions of transport (highways under bad conditions of conservation) as the main causes of the losses of fresh fruits. Supplying control, the education of the consumer, and fruit quality improvement are priority measures to be taken by the retail markets. It was concluded that the retail markets of Mineiros need to develop more energetic actions and to be taken attitudes in order to control the losses of the fruit products.

ENRAIZAMENTO DE ESTACAS LENHOSAS DE PESSEGUEIRO TRATADAS COM ÁCIDO INDOL-BUTÍRICO EM DIFERENTES CONCENTRAÇÕES E MÉTODOS DE APLICAÇÃO

Este trabalho teve como objetivo avaliar a capacidade de enraizamento de estacas lenhosas de pessegueiro das cultivares Delicioso Precoce, Joia 1 e Okinawa atraves do uso de metodos de aplicacao exogena de acido indol-butirico (AIB). As estacas foram submetidas aos tratamentos com 0, 1250, 2500 e 3750mg.L-1 de AIB por 5 segundos (imersao rapida) e com 0, 100, 200 e 300mg.L-1 de AIB por 24 horas (imersao lenta). Depois de tratadas, as mesmas foram plantadas e colocadas em casa de nebulizacao por 45 dias. Embora os resultados obtidos para o enraizamento das estacas lenhosas dos pessegueiros tenham sido insatisfatorios, observou-se que o maior porcentual de enraizamento foi obtido com o metodo de imersao rapida (6,1%).