Periods of interference of Alexander grass on morphophysiological and productive characteristics of transgenic soybean

Galon, Leandro; Konzen, Alessandro; Piazzetta, Hugo von Linsingen; Concenço, Germani; Bagnara, Maico André Michelon; Silva, Antônio Marcos Loureiro da; Perin, Gismael Francisco

doi:10.26814/cps2022008

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“…The loss of productivity of the agricultural crops is affected by the presence of weeds in this environment due to competition for the resources of water, nutrients, light, and CO2 (Forte et al 2017;Galon et al 2018;Galon et al 2022). The species S. americanum has been identified in agricultural environments and different regions of the world, mainly in cereal, vegetable and pasture crops (Schuster et al 2016;Saha and Datta 2017).…”

Section: Introductionmentioning

confidence: 99%

Biology of germination of Solanum americanum: a weed ascending in Brazilian crops

Franceschetti¹,

Galon²,

Nunes³

et al. 2023

Commun. Plant. Sci.

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Solanum americanum is a weed found in many important crops and is characterized by high production of fruits and seeds. Knowledge of the biology of the species is essential for efficient weed control so that the best control strategies and combinations thereof can be developed. Therefore, the aim of this study was to determine the environmental factors that affect germination and emergence of S. americanum. Six experiments were conducted in the laboratory, simulating field situations in which germination was tested under different pH conditions, osmotic and saline stress, the effect of aluminum content, and different covers and straw levels. Germination and seedling emergence were evaluated, depending on the objectives of the experiment. We found that the germination changed according to the increase in salinity and the decrease in osmotic potential of the soil. The same was observed to the soil cover and its levels, as the emergence rate decreased with the increase in the amount of straw. Germination was reduced at alkaline pH (9-10). Aluminum had no effect on germination, only on normal seed development. Highlighted Conclusion1. Increasing the amount of straw in the soil reduced the germination of S. americanum. 2. At alkaline pH, germination of S. americanum was reduced. 3. Aluminum had a negative influence on the development of S. americanum.

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