Residual effect of organic fertilization on radish production

Natália Bl Lanna,Antonio Ismael Inácio Cardoso,Priscilla Nátaly L Silva,Carla Veronica Corrêa,Lidiane F Colombari

doi:10.1590/s0102-053620180108

Natália Bl Lanna, Antonio Ismael Inácio Cardoso + Show 3 more

Open Access

https://doi.org/10.1590/s0102-053620180108

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Abstract

ABSTRACT this research aimed to evaluate the residual effect of doses of organic compost on the radish production, as well as its effect on soil chemical properties. experiments were conducted in two areas (“low” and “high” soil fertility). prior to this, these areas were first used to evaluate the influence of organic compost doses on endive production. after harvesting endive, radish seeds were sown into the same plots used for endive to evaluate the residual effect. the six treatments consisted of organic compost doses (0, 35, 70, 105, 140 and 175 t ha-1), evaluated in a complete block experimental design, with four replications. vegetative characteristics of radish plants (shoot, root and total fresh and dry matter weight, plant height and root diameter) and soil characteristics (macronutrient content, ph, h+al, organic matter, sum of bases, cation exchange capacity and base saturation) in two dates (11 days after the endive transplant and at the end of the radish cycle) were evaluated. no significant difference was observed for all doses of organic compost in the “low” soil fertility area, obtaining only non-commercial roots (average fresh weight of 5.01 g per root). in the “high” soil fertility area, the higher the organic compost doses, the higher the values of most vegetatitve characteristics of radish plants and the chemical properties of the soil in both dates. for root fresh weight, the values ranged from 4.63 to 9.15 g in the control without organic compost and in the highest dose, respectively. in “high” soil fertility area, only k content in soil has not remained high for all organic compost doses, and the values ranged from 2.8 and 4.5 mmolc dm-3, in control without organic compost and in the highest dose, respectively. the residual effect of organic compost was confirmed by the increasing on the radish production in initial “high”soil fertility area.

Highlights

Efeito residual da adubação com composto orgânico na produção de rabanete Objetivou-se com esta pesquisa avaliar o efeito residual da adubação com doses de composto orgânico na produção do rabanete, assim como o efeito nas características químicas do solo
Organic fertilizer provides some benefits to the soil, such as increasing water penetration and retention; improving the structure, aeration and porosity; increasing microbial life; enhancing the availability and uptake of nutrients in order to meet the crop demand
In addition to many benefits that organic compost can provide to the soil, it shows a slow nutrient release effect (Rodrigues et al, 2008; Yagioka et al, 2014), providing gradual nutrients release to the plant, which allows producers to save money on fertilizers

Summary

Introduction

Efeito residual da adubação com composto orgânico na produção de rabanete Objetivou-se com esta pesquisa avaliar o efeito residual da adubação com doses de composto orgânico na produção do rabanete, assim como o efeito nas características químicas do solo. Na área de “alta” fertilidade, quanto maior a dose de composto orgânico, maiores os valores da maioria das características vegetativas das plantas e das propriedades químicas do solo nas duas avaliações. Para a massa fresca de raiz, os valores variaram de 4,63 a 9,15 g na testemunha sem adubação e na maior dose de composto orgânico, respectivamente. Nesta área de “alta” fertilidade, apenas o teor de K no solo não se manteve elevado para todas as doses de composto orgânico, e os valores variaram de 2,8 e 4,5 mmolc dm-3, na testemunha sem adubação e na maior dose de composto orgânico, respectivamente. Radish (Raphanus sativus) is a small-sized Brassicaceae, which is grown for its tuberous root and is a vegetable characterized by its short growing period (Yuan et al, 2014) It presents different forms (round, oval or elongated), sizes, colours (red, yellow, pink or white) and flavors (Filgueira, 2008). In addition to many benefits that organic compost can provide to the soil, it shows a slow nutrient release effect (Rodrigues et al, 2008; Yagioka et al, 2014), providing gradual nutrients release to the plant, which allows producers to save money on fertilizers

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