Evaluation of organic cotton residue and application of biostimulant in the production of radish (Raphanus sativus)

Natália Amanda Gouveia,Tabata Raissa De Oliveira,Cátia Aparecida Simon,Jorgiani De Ávila,Maria Gabriela De Oliveira Andrade,Sebastião Ferreira De Lima

doi:10.33448/rsd-v9i7.4092

Natália Amanda Gouveia, Tabata Raissa De Oliveira + Show 4 more

Open Access

https://doi.org/10.33448/rsd-v9i7.4092

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Abstract

The objective of this study was to evaluate the growth and yield of radishes in response to cotton residue doses and biostimulant application. The experimental design was in randomized blocks in a 5 x 2 factorial scheme using the doses of 0; 25; 50; 75; 100 t ha-1 of cotton residue with or without biostimulant, with three replicates. At 32 days after emergency, the following variables were determined: plant height, leaf area, diameter of commercial roots, diameter of non-commercial roots, fresh mass of commercial roots, fresh mass of non-commercial roots, root dry mass, and dry mass of the plant leaves. Increases ranging from 49.74 to 1.291% were observed depending on the analyzed variable in comparing the control with the highest residue dose of 100 t ha-1. The biostimulant application treatments were up to 25.75% superior in relation to the treatments without application. It is concluded that cotton residue application and biostimulant are good alternatives to improve the performance of radish plants and can be used in organic production systems.

Highlights

Radish (Raphanus sativus L.) roots are the part of commercial interest and their size depends on the amount of nutrients present in the soil, having its cultivation highlighted in metropolitan city green belts (Linhares et al, 2010)
Organic fertilization promotes a gradual release of nutrients, elevates the pH by increasing the nutrient retention capacity, increases the biological activity and provides a greater diversity of nutrients as they present varying compositions according to the residue used (Naik et al, 2009)
There was a significant interaction between treatments for the analyzed variables: leaf area, leaf dry mass, commercial and non-commercial root diameter, fresh commercial and non-commercial root mass, root dry mass (Table 1)

Summary

Introduction

Radish (Raphanus sativus L.) roots are the part of commercial interest and their size depends on the amount of nutrients present in the soil, having its cultivation highlighted in metropolitan city green belts (Linhares et al, 2010). Organic fertilization promotes a gradual release of nutrients, elevates the pH by increasing the nutrient retention capacity, increases the biological activity and provides a greater diversity of nutrients as they present varying compositions according to the residue used (Naik et al, 2009). Biostimulants can be natural or synthetic substances used in soil, plants and seeds which modify vital and structural processes, aiming to increase productivity (Ávila et al, 2008).

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