Effect of the environment and use of alternative products in the post-harvest of papaya

Abstract

<jats:p>Abstract This study aimed to establish an alternative treatment for post-harvest storage of Papaya (Carica papaya L.), var “Tainung 1” and to control major diseases at this stage. Two storage place were evaluated (room temperature and cold room); Six treatments (Control, Samurai 40ml/20l water, Serenade® 40ml/20l water, Sanatizer EUPROOFF® 10ml/20l water, EUPROOFF® + Serenade® + Samurai, Serenade® + Samurai), five storage periods (0, 3, 6, 9 and 12 days) and three seasons (December, January and February). Fruit weight loss (FWL), color index, number and size of lesions were evaluated and used to calculate the disease incidence and average of disease incidence. The FWL and index color of fruits were more affected by monthly variation than the treatments, especially the Samurai one. The growth of disease incidence were slower under cold room. Among the treatments, the Samurai was the most efficient,but if mixed to others products their efficiency was not observed. These results suggest that the using of Samurai only in cold room conditions can be more effective in control of post-harvest diseases of papaya.</jats:p>

Effect of Organic Fertilizer on Tomato Growth and Production under Soil-less System

“…Too much and/or low P might not induce the effects of this organic fertilizer. It contains N, P, and K together with some hydrophilic bacteria, which are in charge of nutrient cycling and disease control [13]. The effects of Kurojiru were not as high as expected; thus, its effects as a P supplier are strict limited, and the action of these bacteria is necessary to solubilize P. The use of organic fertility is a big challenge in soil-less systems, and a comparison between organic and conventional inorganic fertilizers treatments in `Rex` lettuce indicated that Bombardier, Espartan and Caos fertilizers were more effective [6].…”

“…the hydrophilic bacteria and some nutrients. This experiment is important because it is the most used organic fertilizer in Japan but there is no previous research, except for the application of such product as an alternative treatment for post-harvest storage of Papaya, where they could reduce the disease incidence [13]. Perhaps active bacteria contained in Kurojiru could function as biocontrol agent for this disease.…”

Postharvest conservation of Formosa ‘Tainung 1’ papaya under refrigeration, modified atmosphere, and chitosan

“…These characteristics predispose such fruits to many diseases that manifest themselves only in the postharvest, despite infections occurring in the preharvest. They also lead to disadvantages regarding handling after harvest, resulting in losses from the lack of timely commercialization or consumption of the product (GALO et al, 2014;MURAKAMI et al, 2020).…”

“…European fruit importers have also expressed concern about chemical residues in fruits. Importers signal that they will soon no longer accept fruit containing traces of fungicides or other agrochemicals (MURAKAMI et al, 2020).…”

Efecto de Phyco Terra® bio orgánico en el cultivo de Brassica oleracea y en el suelo degradado en macas, Santa Rosa de Quives, Canta

“…Se debe promover políticas para la obtención de mejores alimentos libres de agroquímicos, porque de otra forma se perjudicaría otros indicadores esenciales para la continuación a largo plazo de una actividad agrícola de calidad; un manejo no sostenible generaría graves problemas ambientales (Murakami et al, 2020). Por otro lado, existe una comercialización extendida de productos que dicen mejorar los cultivos impactando positivamente en la calidad del suelo, es decir que promueven el desarrollo sostenible de la agricultura, sin embargo, son pocos los que realmente tienen estos efectos en los suelos (Pérez et al, 2020).…”