Potential of : A Review on Avermectin Production and Its Biocidal Effect.

Secondary metabolites produced by the fermentation of bacterium are powerful antiparasitic agents used in animal health, agriculture and human infection treatments. Avermectin is a macrocyclic lactone with four structural components (A1, A2, B1, B2), each of them containing a major and a minor subcomponent, out of which avermectin B1a is the most effective parasitic control compound. Avermectin B1a produces two homologue avermectins (B1 and B2) that have been used in agriculture as pesticides and antiparasitic agents, since 1985.

Phytotoxicity of Extracts of and on Tomato Seedling Physiology.

Phytotoxicity caused by secondary metabolites of botanical extracts is a drawback in agriculture. The objective of this study was to evaluate the phytotoxic effects of methanolic extracts of and on the germination and physiological variables of tomato seedlings. The results indicated that high doses of both extracts ( and ) inhibited tomato seed germination, while their mixture ( + ) promoted germination by 100%.

A review of techniques for detecting Huanglongbing (greening) in citrus.

Huanglongbing (HLB) is the most destructive disease of citrus worldwide. Monitoring of health and detection of diseases in trees is critical for sustainable agriculture. HLB symptoms are virtually the same wherever the disease occurs.

[Fusarium species associated with basal rot of garlic in North Central Mexico and its pathogenicity].

Garlic in Mexico is one of the most profitable vegetable crops, grown in almost 5,451ha; out of which more than 83% are located in Zacatecas, Guanajuato, Sonora, Puebla, Baja California and Aguascalientes. Blossom-end rot caused by Fusarium spp is widely distributed worldwide and has been a limiting factor in onion and garlic production regions, not only in Mexico but also in other countries. The presence of Fusarium oxysporum has been reported in Guanajuato and Aguascalientes.