Glomus clarun and native mycorrhizal fungi on yield of Trifolium spp. cultivated under natural and modified soil contitions with addition by phosphorus and liming

Ciência Rural

Figueiredo, Luiz Guilherme Buchmann²  Antoniolli, Zaida Inês³  Della-Justina, Maria Edith²  Pessoa, Antonio Carlos dos Santos¹ 

[1] Universidade Federal de Viçosa, Viçosa;UFSM;Universidade Federal de Santa Maria

关键词: vesicular-arbuscular mycorrhizal;    Glomus clarum;    Trifolium spp;   

DOI  :  10.1590/S0103-84781997000100012

学科分类：农业科学（综合）

来源: Universidade Federal de Santa Maria * Centro de Ciencias Rurais

【 摘 要 】

The experiment v/as conducted under greenhouse condition at the University of Santa Maria, RS, Brazil. The objectives were to evaluate the introduction of arbuscular mycorrhizalfúngi (AMF) Glomus clarum and natives fungi on the phosphorus uptake and dry matter (DM) production from Trifolium spp. and Io verify lhe compatibilily between introduced specie and lhe nativo AMF occurence in lhe studied soil. The treatments was constituled of 4x2x2 factorial withfour AMF leveis: G. clarum, AMf native, mixture of both populations of AMF andcontrai which was without inocutation of AMF: twopH leveis: 4.4 and 5.4 and two phosphorus leveis by Mehlich I extractor: 6 and l5mg/kg of soil. It was noticed that when G. clarum was introduced isolately or with native AMF with pH of 4.4 and low P availability increased DM production and P accumulation. At medium P availability (15mg/kg of soil) and pH 5.4 there were no diferences between inoculated treatments with AMF but from ones there was observed diferences on the contrai. These differences were due to the mycorrhizal dependence on Trifolium. Inoculated treatments with G. clarum showed higher DM production, Puptake, mycorrhizal colonization and number of spores. It can be concluded that the introduction of G. clariim can be viable when the nativo species are not efficient for the crop or become unefficient when the natural soilferlilily is modified by addition of phosphorus or liming.

【 授权许可】

CC BY-NC