Arbuscular Mycorrhiza Fungi as an Indicator of Soil Fertility

Syib’li, Muhammad Akhid; Muhibuddin, Anton; Djauhari, Syamsuddin

doi:10.17503/agrivita-2013-35-1-p44-53

Cited by 3 publications

(1 citation statement)

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“…In the case of soybean and other leguminous plants that have short or scarce root hairs, the association with mycorrhizal fungi is of extreme importance, resulting in better plant nutrition, as for example, phosphorous supply to the roots (Syibli, Muhibuddin, & Djauhari, 2014). The benefits of arbuscular mycorrhiza for plant growth are directly correlated with the degree of root colonization, and in the case of soy, it has an important role in favoring nodulation and biological nitrogen fixation (Moreira & Siqueira, 2006).…”

Section: Introductionmentioning

confidence: 99%

<b>Mycorrhizal association in soybean and weeds in competition

et al. 2016

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ABSTRACT. The purpose of this study was to evaluate the effects of mycorrhizal association on the interference of Bidens pilosa, Urochloa decumbens and Eleusine indica on soybean culture in two conditions: a) plants competing without contact with roots of another species; b) with contact between roots. At 60 days after planting, growth, nutrient accumulation and mycorrhizal colonization of soybean and weeds were evaluated. The contact between roots of soybean plant and weed species increased the negative interference effects for both species, with less growth and nutrient accumulation. With the individualization of roots, higher competition occurred for soil resources up to 60 days of coexistence between species. In competition with soybean, Bidens pilosa and Urochloa decumbens stood out in accumulation of most nutrients without differing from when cultivated in monocultivation. The increase of the soybean mycorrhizal colonization was 53, 40 and 33% when in competition with Urochloa decumbens, Eleusine indica and Bidens pilosa species, respectively. A positive interaction occurred for soybean mycorrhizal colonization and competing plants irrespective of weed species or root contact. Keywords: Bidens pilosa, Urochloa decumbens (Syn. Urochloa decumbens), Eleusine indica, arbuscular mycorrhiza fungi.Associação micorrízica em soja e plantas daninhas em competição RESUMO. Objetivou-se neste trabalho avaliar os efeitos da associação micorrízica na interferência de Bidens pilosa, Urochloa decumbens e Eleusine indica sobre a cultura da soja em duas condições: a) plantas competindo sem contato entre raízes de outra espécie b) com contato entre raízes. Aos 60 dias após o plantio, foram feitas avaliações do crescimento, acúmulo de nutrientes e colonização micorrízica da soja e plantas daninhas. O contato entre as raízes de plantas de soja e das espécies daninhas aumentou os efeitos negativos da interferência para ambas às espécies, com menor crescimento e acúmulo de nutrientes. Com a individualização das raízes, maior competição estabeleceu-se pelos recursos do solo até os 60 dias de convivência entre cultura e espécie competidoras. Em competição com a soja, B. pilosa e U. decumbens destacaram-se no acúmulo da maioria dos nutrientes não diferindo de quando cultivadas em monocultivo. O aumento da colonização micorrízica da soja foi de 53, 40 e 33 % quando em competição com U. decumbens, E. indica e B. pilosa, respectivamente. Ocorreu interação positiva para a colonização micorrízica da soja e das plantas competidoras independente da espécie daninha e do contato entre as raízes. Palavras-chave:Bidens pilosa, Urochloa decumbens, Eleusine indica, fungo micorrízico arbuscular.

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Section: Introductionmentioning

confidence: 99%