Effects of Pre-Harvest Glyphosate Application on Spring Wheat Quality Characteristics

Maneka Malalgoda, Jae-Bom Ohm, Joel K. Ransom, Kirk Howatt and Senay Simsek
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Maneka Malalgoda: Department of Plant Sciences, North Dakota State University, Fargo, ND 58108, USA
Jae-Bom Ohm: USDA-ARS, Edward T. Schafer Agricultural Research Center, Cereal Crops Research Unit, Hard Spring and Durum Wheat Quality Laboratory, Fargo, ND 58102, USA
Joel K. Ransom: Department of Plant Sciences, North Dakota State University, Fargo, ND 58108, USA
Kirk Howatt: Department of Plant Sciences, North Dakota State University, Fargo, ND 58108, USA
Senay Simsek: Department of Plant Sciences, North Dakota State University, Fargo, ND 58108, USA

Agriculture, 2020, vol. 10, issue 4, 1-16

Abstract: This study was conducted to determine the effect of pre-harvest glyphosate application on spring wheat quality characteristics, ranging from kernel quality to baking quality. Two wheat cultivars were grown in three locations, and glyphosate was applied at the recommended rate at the soft dough stage (early application) and the ripe stage (recommended application time). When glyphosate was applied at the soft dough stage, kernel weight, wheat protein and wet gluten decreased significantly ( p ≤ 0.05), however, gluten index significantly increased ( p ≤ 0.05). Dough quality, farinograph stability, and quality number were significantly ( p ≤ 0.05) higher when glyphosate was applied at the soft dough stage, and absorption and the mixing tolerance index were lower. As for baking quality, loaf volume and mix time were significantly ( p ≤ 0.05) higher in the treated samples in comparison to the untreated control, and other baking quality characteristics did not show any significant difference. Overall, the results indicate that spring wheat quality characteristics are impacted to the greatest degree when glyphosate is applied earlier than recommended at the soft dough stage, as opposed to the recommended application at the ripe stage of physiological development.

Keywords: pre-harvest; glyphosate; spring wheat; quality (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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