Physiological, phenological and productive responses of tomato (Solanum licopersicum L.) plants treated with QuitoMax

Abstract

Physiological, phenological and productive responses of tomato (Solanum licopersicum L.) plants treated with QuitoMax. 2018. Cien. Inv. Agr. 45(2): 120-127. The objective of this study was to evaluate the foliar application of the biostimulant QuitoMax at concentrations 100, 200, 300 and 400 mg•ha-1 in comparison to a control without the application of QuitoMax on the height and stem thickness of tomato plants. The durations of the plant phenological phases, productive indicators (the number of fruit, bunches per plant, the number of fruits per bunches, the polar and equatorial diameters of the fruit, the mass of the fruit and crop yield), the quality of the fruit expressed as the total soluble solids and acidity, and the commercial quality of the harvested fruits were also evaluated. The highest concentrations of QuitoMax (300 and 400 mg•ha-1) were found to produce the most vigorous plants, lengthened the duration of the plant phenophases, and resulted in significantly higher values in the production indicators, including the fresh mass of the fruits and performance. Additionally, they produced fruits with a higher content of total soluble solids.

Efecto del quitosano sobre variables del crecimiento, rendimiento y contenido nutricional del tomate

“…Este hecho pudiera conducir a una disminución de los contenidos de sólidos solubles totales y vitamina C; a partir, de una determinada concentración de quitosano que según los resultados encontrados en esta investigación sería a 300 mg L -1 . Sin embargo, Reyes-Pérez et al (2018) obtuvieron resultados diferentes en el cultivo del tomate, al demostrar que la aplicación foliar de quitosano a concentraciones de 300 y 400 mg L -1 producían las mayores cantidades de sólidos solubles totales.…”

Effect of chitosan on growth and productive parameters in broccoli plants (Brassica oleracea L. var. Calabrese)

“…Their positive effects are mainly due to bioactive compounds that stimulate plant growth, such as phytohormones, amino acids, and nutrients (Kisvarga et al, 2022). One of the biostimulants used to increase growth, development, and yields in crops is chitosan, due to its biocompatibility, biodegradability, and bioactivity (Reyes-Pérez et al, 2020b;Torres-Rodriguez et al, 2021). Chitosan is a biopolymer obtained from chitin, which is the second most common natural polysaccharide after cellulose (Muthu et al, 2021).…”

Germination performance and vigor of tobacco seeds coated with a chitosan-based bioproduct

“…Among the techniques to reduce the use of agrochemicals in major crops there is the use of biodegradable and biocompatible nature polymers, especially if they are low cost, show promising results and reduce the damage caused to ecosystems (Malerba & Cerana, 2018, Reyes-Pérez et al, 2018. Their use as seed coating or covering has drawn attention of researchers and farmers due to the observed effects, acting as biostimulants in germination and plant growth, defense against fungi and pathogens, field results in mass and plant height, increased productivity, and crop yield, among others (Benatto-Junior et al, 2012, Terry Alfonso et al, 2017, Reyes-Pérez et al, 2018.…”