Invasive Species Compendium

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Abstract

Silicon sources on common beans genotypes for rainy and dry season harvests.

Abstract

A study was conducted to evaluate the effect of sources of silicon (Si; Rocksil, 30 g/l, Saborsil AC77 at 20 g/l and potassium silicate at 30 g/l) on the incidence and severity of diseases, leaf Si, grain yield and its components of 2 genotypes (Pérola and Aporé) of common bean (Phaseolus vulgaris) in Ipameri, Goiás, Brazil, during the summer and summer-autumn seasons. Two control treatments (cultivars that did not received any type of Si fertilizer) were included. In summer-autumn season, one more cultivar (BRSMG Talismã) was added to the treatments, with all combinations of treatments maintained. Foliar application of Si decreased the severity of anthracnose [Colletotrichum lindemuthianum] and angular spot leaf [Phaeoisariopsis griseola] during summer, and bacterial blight [Xanthomonas phaseoli] in summer-autumn season. Pérola was more productive in summer, while in summer-autumn season, the behaviour was similar to Aporé and BRS Talismã. The 3 Si sources did not differ in their ability to provide Si to the plants. The grain yield and its components (number of pods per plant, number of seeds per pod and weight of a hundred grains) were not affected by the application of Si.