Integrated effects of herbicides and foliar fertilizer on corn inbred line

Abstract

Plant response to herbicides is one of the most essential points in corn (Zea mays L.) production, especially in inbred lines. Weed abundance is higher in corn lines comparing to hybrids. Insufficient herbicide selectivity in lines crop can be a limiting factor for their application. Weed control today is based on Integrated Weed Management (IWM) approach, i.e. to use all possible methods and measures for weed control and better crop fitness. In this research, sensitivity of one corn inbred line (selection based on previous research) was tested to two sulfonylurea herbicides in treatments with and without foliar fertilizer. Treatments included recommended and double field doses and control (no herbicide), with and without foliar fertilizer. Herbicides and foliar fertilizer were applied as a mixture. In a 3 yr field experiment, herbicides expressed different selectivity to the tested line. The line was further tested in controlled conditions for dose-response analyses in order to determine variations in biomass and biochemical compounds levels. The double dose of foramsulfuron affected fresh matter significantly (p < 0.05) with 90% decrease, compared to control. An experiment in controlled conditions showed increased tolerance to herbicides in treatments with foliar fertilizer-according to higher effective doses (ED10, ED50, and ED90) estimated, indicating higher plant tolerance to herbicides when foliar fertilizer was applied. In corn leaves the highest herbicide dose and foliar fertilizer induced slight reduction of concentrations of free thiol groups, soluble proteins and phytic P (to 14.1%, 9.3% and 9.9%, respectively) and increased phenolics concentration (up to 26.7%) compared to treatment without herbicide application. Obtained results indicate positive effects of foliar fertilizer when it is applied in mixture with herbicides, and foliar fertilizing should be considered as important strategy in obtaining higher yields.

Effect of different pesticides and European corn borer attack on phytic phosphorus content in maize grain

“…Banothu and Uma (2021) showed that stress conditions are associated with changes in various phenolic compounds. In the work of Brankov et al (2020), the content of phenolic, proteins, total carotenoid content, total chlorophyll, and Pphy, was diverse in maize leaves treated with different herbicide doses. Foster and Brust (1995) noticed that the insecticide carbofuran may be acting as a growth stimu-lant, as well as an insecticide on watermelon.…”

“…Also, to explore and identify low phytic acid genotypes diverse sets of maize landraces, inbred lines, and hybrids were analyzed for phytic acid content (Drinić Mladenović et al, 2009;Dragičević et al, 2013;Yathish et al, 2021;Kahriman et al, 2021). Brankov et al (2020) tested herbicides and foliar fertilizer mixtures on grain composition in maize inbred lines and found a significant environmental impact on phytic acid content in maize.…”

Fertilization of wheat with liquid organic fertilizers under the conditions of a pot vegetation experiment

“…Thus, soil deficiency in micro-elements can be successfully managed by foliar fertilizing and must be the preferred way to apply microelements (Tejada et al, 2018). In some cases, fertilizers and herbicides can be combined in order to help crops to overcome possible herbicide stress (Brankov et al, 2020).…”

Rationalizing Herbicide Use in Maize within the Framework of Climatic Change and Extreme Hydrometeorological Phenomena

“…Maize (Zea mays L.) is the most important cereal crop worldwide [1], with an average harvested area of 198,869,908.20 ha and production of 1,154,945,359.65 t from 2017 to 2021 [2]. In the Republic of Serbia, maize is the most important arable crop [3] and provides staple food to a large portion of the human population [4]. As a cereal, maize dominates, comprising 53.0% of the harvested area.…”