Agronomic performance of sweet potato crop in succession to leguminous plants in monocropping and intercropped with corn

Jhonatan M Goulart,Ednaldo Da S Araújo,José Antonio A Espindola,Adriano A Rocha,José Guilherme M Guerra

doi:10.1590/s0102-0536-20210209

Jhonatan M Goulart, Ednaldo Da S Araújo + Show 3 more

Open Access

https://doi.org/10.1590/s0102-0536-20210209

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Abstract

ABSTRACT This study aimed to evaluate sweet potato performance in succession to annual herbaceous leguminous plants, in monocropping or intercropped with corn, under agroecological management, under Baixada Fluminense conditions. The experimental design was randomized blocks, with five treatments and four replicates. The treatments consisted of pre-cropping with the following species: crotalária (Crotalaria juncea) under monocropping system, crotalária intercropped with corn (Zea mays), jack bean (Canavalia ensiformis) under monocropping system, jack bean intercropped with corn and spontaneous vegetation. The results showed that monocropped crotalária reached the greatest dry biomass accumulation during two consecutive years of succession. In the second year, this treatment provided greater accumulated amounts of N, K and Mg in plant biomass. Growing sweet potatoes in succession to the pre-cropping of crotalária is advantageous, as it provided an increase in vegetable productivity in the second year of succession.

Highlights

O objetivo deste estudo foi determinar o desempenho de batatadoce em sucessão a leguminosas herbáceas anuais, em monocultivo ou consorciadas com milho, sob manejo agroecológico, em condições da Baixada Fluminense
Sweet potato (Ipomoea batatas) is a vegetable which belongs to botanical family Convolvulaceae
Santos et al (2010), evaluating the effect of organic fertilization on sweet potato total production, concluded that total production (18.03 t ha-1) of sweet potato roots responded linearly and positively to increasing doses of poultry litter and that fertilizer application increased the total production of sweet potato roots

Summary

Introduction

O objetivo deste estudo foi determinar o desempenho de batatadoce em sucessão a leguminosas herbáceas anuais, em monocultivo ou consorciadas com milho, sob manejo agroecológico, em condições da Baixada Fluminense. Esse tratamento proporcionou maiores quantidades acumuladas de N, K e Mg na biomassa vegetal. Sweet potato (Ipomoea batatas) is a vegetable which belongs to botanical family Convolvulaceae. It is from Central and South Americas, where approximately 50 genera and more than 1,000 species can be found (Lebot, 2009). This crop plant is grown in all Brazilian states, using intense tillage, involving plowing and harrowing (Rós, 2017). The investment on sweet potato crop is low. Results obtained from some studies, carried out throughout the years, show the productive potential of this crop when submitted to organic fertilization. Results obtained from some studies, carried out throughout the years, show the productive potential of this crop when submitted to organic fertilization. Santos et al (2010), evaluating the effect of organic fertilization on sweet potato total production, concluded that total production (18.03 t ha-1) of sweet potato roots responded linearly and positively to increasing doses of poultry litter and that fertilizer application increased the total production of sweet potato roots

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