Custo de produção de goiabas para mesa produzidas com e sem ensacamento: estudo de caso

Tokairin, Tatiane de Oliveira; Cappello, Fernando Perez; Spósito, Marcel Bellato

doi:10.1590/0100-2945-347/13

Cited by 5 publications

(6 citation statements)

References 6 publications

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“…Guava fruit bagging increases the length, diameter, and mass of the fruit, caused by their metabolic alteration (Tokairin et al, 2014;Azevedo et al, 2016), a behavior that has also been observed in other fruits, such as in the 'Royal Gala','Fuji Suprema','Catarina', apples (Santos et al, 2015). For apples, the white nonwoven fabric bags provided fruits with higher mass and diameter.…”

Section: Resultsmentioning

confidence: 62%

“…Besides insect control, bagging also influences the post-harvest and quality of the fruit, and may even increase weight, modify fruit color (Tokairin et al, 2014), as well as increase size, humidity, and the contents of vitamin C (Hossain et al, 2018) and soluble solids (Edirimanna et al, 2015;Meena et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…In spite of the low cost with agrochemicals, fruit bagging in guava is still an expensive agricultural practice, increasing the total cost by 8.6%. For dealing individually with each fruit (Tokairin et al, 2014), it is necessary to evaluate materials of low cost, weatherresistant, harmless to the fruits, and of easy management.…”

Section: Introductionmentioning

confidence: 99%

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Quality of guava fruits bagged with different materials in an organic system

et al. 2020

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This study aimed to evaluate the interference of bagging materials on the incidence of insect larvae and the physical and chemical quality of the guava cv. Paluma in an organic system. The experimental design was in randomized blocks with seven treatments and four replications of 25 fruits each. The bagging materials (treatments) were: nonwoven fabric (TNT), transparent plastic bag, white plastic bag, parchment paper, kraft paper, and non-bagged fruits (control). The titratable acidity (TA), ascorbic acid, soluble solids (SS), SS/TA ratio, fresh mass, fruit diameter, fruit length, appearance, and fruit fly incidence were evaluated. Fruit bagging increased the fresh fruit mass, except the tulle bag, which did not change fruit diameter but increased fruit length. There was a high incidence of fruit flies in the non-bagged fruits (100%) and in those with tulle bags (56.53%), reduced to 2.15% when using parchment paper, and reaching the absence of bored fruits when using nonwoven fabric, transparent plastic, and white plastic bags, materials that provided the highest percentages of marketable fruits. All bagging materials did not change the total titratable acidity content and the SS/TA ratio; however, all of them reduced the content of total soluble solids, except the tulle bag. Fruit bagging with nonwoven fabric and parchment paper increased the content of ascorbic acid. Fruit bagging with parchment paper, plastic bag, and nonwoven fabric are efficient in the organic production of guavas for preventing the infection by insect larvae and maintaining the physical and chemical quality of the fruit.

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Section: Resultsmentioning

confidence: 62%

Section: Introductionmentioning

confidence: 99%

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Quality of guava fruits bagged with different materials in an organic system

et al. 2020

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“…The psyllid Triozoida limbata Enderlein 1918 (Hemiptera: Psylloidea: Triozidae) is a critical guava ( Psidium guajava L.) pest in the neotropical region, occurring in Argentina, Bolivia, Brazil, Colombia, Costa Rica, Ecuador, El Salvador, French Guiana, Mexico, Panama, Peru and Trinidad and Tobago (Brown & Hodkinson, 1988; Burckhardt, 1988). Guava orchards are of food importance (due to the nutrients present in their fruits), economic (due to the income generated for farmers) and social (due to the jobs generated) (Acham et al, 2018; Tokairin et al, 2014). These tiny insects, popularly known as jumping plant lice, are monophagous on guava and had minor economic importance until becoming a key pest in commercial orchards (Semeão et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Assessment of Triozoida limbata (Hemiptera: Triozidae) attacks: morphological and biochemical changes on Psidium guajava plants

et al. 2022

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The relationship between herbivorous insects and plants is an example of an ‘evolutionary arms race’. Understanding the relationship between insects and their host plants makes it possible to determine critical points in the bioecology of these herbivores. In this relationship, insects and plants use strategies to overcome, avoid and mitigate the actions of the other. Insect‐induced galls are one of the great examples of this ‘arms race’. Psyllids (Hemiptera: Psylloidea) are among the most important gall‐inducing insects. The psyllid Triozoida limbata (Triozidae) is an important pest of guava (Psidium guajava) in the Neotropics. Thus, this work aimed to determine the morphological, anatomical, and biochemical changes in guava leaves caused by T. limbata to study the ‘arms race’ between these two organisms. Therefore, the process of gall formation on guava leaves during the psyllid life cycle was described. A comparative study of the anatomy and levels of phytohormones in leaves attacked and not attacked by the psyllid was carried out. It was found that the psyllid attack triggered the plant's defence by increasing the jasmonic acid content in the leaves. The psyllid attack caused anatomical changes in the leaves (such as cell non‐differentiation), allowing the insect to survive feeding on the plant. In addition, the psyllid‐induced galls provided shelter for the psyllid.

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“…FIGURA 1: Esquema do processo de venda do produto direto para o varejo (Produtor-Loja) Já os outros 82% da produção foram comercializadas no CEASA -Irajá/RJ com um preço médio de venda de R$1,33/kg, valor inferior, ao obtido no comércio de goiabas no CEAGESP, de R$1,85/kg (TOKAIRIN, 2014). O conjunto de caixas de goiabas comercializado no CEASA, é composto por goiabas do mesmo padrão daquelas comercializadas no sistema de varejo (Produtor-Loja) goiabas de menor tamanho, goiabas maduras e por aquelas que possuem algum tipo de defeito em sua superfície, mas que não compromete o seu consumo, cada classificação separada em caixas distintas.…”

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Análise Da Viabilidade Econômica Da Produção De Goiaba Em Cachoeiras De Macacu – Rj

Uesu¹,

Cecchin²,

Uesu³

et al. 2018

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RESUMO Dentre os problemas enfrentados no cultivo da goiaba, pode-se destacar, por sua importância, o investimento inicial necessário da atividade, o qual deve ser comparado com outras oportunidades, uma vez que, dependendo da oferta, os preços podem variar e a recuperação do investimento poderá ser demorada, gerando insegurança para o empreendedor. O presente trabalho teve como objetivo analisar a viabilidade econômica da produção de goiaba comercial em Cachoeiras de Macacu, RJ. O estudo de caso foi embasado em dados obtidos de uma propriedade produtora de goiaba de mesa, localizada no município de Cachoeiras de Macacu. O investimento inicial foi de R$45.713,00, sendo considerada a Taxa Mínima de Atratividade (TMA) de 7,01%, obtendo-se assim, um Valor Presente Líquido (VPL) de R$49.167,51 para um horizonte de 15 anos. Obteve-se uma Taxa Interna de Retorno (TIR) de 12%, maior que a TMA, demonstrando a viabilidade do investimento. PALAVRAS-CHAVE: administração rural, fruticultura, investimento.

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Custo de produção de goiabas para mesa produzidas com e sem ensacamento: estudo de caso

Cited by 5 publications

References 6 publications

Quality of guava fruits bagged with different materials in an organic system

Quality of guava fruits bagged with different materials in an organic system

Assessment of Triozoida limbata (Hemiptera: Triozidae) attacks: morphological and biochemical changes on Psidium guajava plants

Análise Da Viabilidade Econômica Da Produção De Goiaba Em Cachoeiras De Macacu – Rj

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