Open Access

Investigation of the Effect of Insecticide Applications at Different Development Stages on Yield and Quality Characteristics of Soybean (Glycine max. (L.) Merr.) Grown under Second Crop Conditions

1 Şırnak Üniversitesi, Ziraat Fakültesi, Tarla Bitkileri Bölümü, Şırnak
2 Şırnak Üniversitesi, Ziraat Fakültesi, Tarla Bitkileri Bölümü, Şırnak
3 Dicle Üniversitesi, Ziraat Fakültesi, Bitki Koruma Bölümü, Diyarbakır

Abstract

This study was conducted to evaluate the effects of insecticide applications performed at different growth stages on yield, yield components, and quality parameters of soybean (Glycine max (L.) Merr.) grown under second-crop conditions. The experiment was carried out in 2020 under the ecological conditions of Diyarbakir, Türkiye, using a randomized complete block design with three replications. Insecticide treatments were applied at the vegetative, generative, and maturity stages and compared with untreated control plots. The results indicated that insecticide applications had statistically significant effects on plant height, number of nodes, number of pods and seeds per plant, first pod height, pod length, seed yield, as well as protein and oil contents. However, no significant differences were observed in the fatty acid composition, except for behenic acid. Overall, the findings demonstrate that insecticide applications scheduled according to soybean growth stages may contribute to improved yield performance, while having limited influence on fatty acid composition. while protein and oil ratios showed partial variation among treatments.

 

Keywords

How to Cite

VURAL , İkram, ÖZTÜRK, F., & BAYHAN , E. (2026). Investigation of the Effect of Insecticide Applications at Different Development Stages on Yield and Quality Characteristics of Soybean (Glycine max. (L.) Merr.) Grown under Second Crop Conditions. MAS Journal of Applied Sciences, 11(1), 17–33. https://doi.org/10.5281/zenodo.18767932

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