Journal of Seed Science ()

Seeds treatment times in the establishment and yield performance of soybean crops

  • Cristian Rafael Brzezinski,
  • Ademir Assis Henning,
  • Julia Abati,
  • Fernando Augusto Henning,
  • José de Barros França-Neto,
  • Francisco Carlos Krzyzanowski,
  • Claudemir Zucareli

DOI
https://doi.org/10.1590/2317-1545v37n2148363
Journal volume & issue
Vol. 37, no. 2
pp. 147 – 153

Abstract

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Abstract: The objective was to assess the early treatment effect of soybean seeds and pre-sowing with different combinations of chemicals on the establishment of plants and crop yield performance. The design was in randomized blocks in a 2x7 factorial arrangement, with two times for seed treatment and seven treatments (six chemical treatments and an untreated control). The treatments were: 1) fipronil + pyraclostrobin + thiophanate methyl; 2) imidacloprid + thiodicarb + carbendazin + thiram; 3) abamectin + thiamethoxam + fludioxonil + mefenoxam + thiabendazole; 4) carbendazin + thiram; 5) fludioxonil + mefenoxam + thiabendazole; 6) carboxin + thiram; and 7) untreated control (water only). The assessments were: seedling emergence, final stand, plant height and insertion of first pod, number of pods per plant, seeds per pod and per plant, thousand-seed weight and grain yield. Early treatment of soybean seeds (240 days prior to sowing) hinders the establishment of the crop, the thousand-seed weight and grain yield in relation to the pre-sowing treatment. Chemical treatments tested containing fungicides and insecticides associated favor the establishment of the crop, but do not alter the soybean yield performance.

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