Effect of weed management practices and foliar application of α-Tocopherol on the productivity and oil characteristics of an Egyptian peanut cultivar

Document Type : Original Article

Authors

1 Fats and Oils Department, National Research Centre, El-Buhouth St., Dokki, Cairo, Egypt, Postal code 12622

2 Plant Protection Department, National Research Centre, El-Buhouth St., Dokki, Cairo, Egypt, Postal code 12622

3 Botany Department, National Research Centre, El-Buhouth St., Dokki, Cairo, Egypt, Postal code 12622

Abstract

This work aimed to study the effect of some weed management practices associated with Giza 6 peanut variety cultivated during the summer season of 2021, on peanut oil characteristics. Also, their effect on the yield and growth parameters of peanut plant and the accompanied weeds was studied. The applied weed management techniques included hand hoeing and Clethodim herbicide treatment, using full and half rates, were done as a post-emergence compared to the untreated control. Foliar application of α-Tocopherol was done as a strategy of fighting stress accompanied to all other treatments and to control. Results showed that applying full rate of Clethodim herbicide + α-Tocopherol caused the most noteworthy diminishing in fresh and dry weights of peanut weeds. While, hoeing + α-Tocopherol gave the highest increasing percentage in most of peanut plant growth parameters as well as seed yield per feddan. The highest oil yield/feddan was also recorded for hoeing+ α-tocopherol treatment. Most of the chemical characteristics (peroxide, iodine and acid values) of peanut oils of the different treatments fulfilled the Codex standard characteristics for peanut oil and were better than that of the untreated control. Fatty acids composition of all peanut oil samples showed its characteristic profile with oleic: linoleic acid ratios ranged from 1.2 – 1.4 which gives peanut oil its healthy and stability advantage. Chloroplast pigments (total carotenoids and chlorophylls) and total Tocopherols contents were positively affected with the different treatments compared to the untreated control. These results assessed the protective action of the foliar application of α-Tocopherol compared to the untreated control. The peanut oil extracted from 50% herbicide + 30 % urea + α-Tocopherol treated seeds was found to have the most improved characteristics including fatty acids composition, chloroplast pigments and total Tocopherol contents. It can be concluded that weed management practices along with foliar application of α-Tocopherol are important measures needed to overcome the bad effects of weeds and proved to enhance the produced oil characteristics and the productivity of peanuts compared to the untreated control.

Keywords

Egyptian Journal of Chemistry
Volume 66, Issue 13 - Serial Number 13
Special Issue: Applied Chemistry for Greener Life and Sustainability
December 2023
Pages 711-723

Files

History

  • Receive Date: 06 December 2022
  • Revise Date: 28 December 2022
  • Accept Date: 28 December 2022

Share

How to cite

Statistics