Research Article
Evaluation of Biofertilizer and Pesticide Performance of Black Soldier Fly Larvae (Hermetia illucens) Frass on Farming of Kales (Brassica oleracea)
Issue:
Volume 9, Issue 3, September 2025
Pages:
100-106
Received:
9 June 2025
Accepted:
7 July 2025
Published:
25 August 2025
Abstract: Farming of edible insects is on the increase globally because it can promote circular economy. However, the resultant frass is a potential environmental pollutant, despite its high content of valuable nutrients and bioactive compounds. This research investigated application of black soldier fly frass as both biofertilizer and biocontrol agent on kales (Brassica oleracea). The study specifically investigated effect of black soldier fly frass on growth performance, assessed its pesticide activity; and determined effect of fermentation on frass efficiency as a pesticide. The study used a randomized complete block design to arrange the experimental plots. Three frass types were applied on kales a rate of 50 grams per plant in potted pots in a field and performance assessed by counting number of leaves in a plant and measuring leaf surface area. Frass mixed with water at a ratio of 1:1 was filtered to make frass tea and applied on kales at a weekly rate of 100 ml per plant for 4 weeks. Performance was evaluated by counting the number of pest spot attacks on the vegetables and counting number of insect larvae collected per plant. Lastly, frass from the most potent substrate was selected, and fermented for 2 and 4 days respectively to produce “frass tea” and used as above. The results were analyzed in SPSS using ANOVA and presented in graphs and tables. Results showed that kales grown on frass from chicken+fruit+brewery waste treatment had superior growth with mean value of 1.01±0.8 for number of leaves and 2.15±0.02 for leaf surface area respectively, compared to 0.47±0.1 and 1.16±0.10 respectively for the control. Secondly, frass tea from chicken+brewery waste was more effective as it recorded mean values 0.16±0.10 and 0.06±0.06 respectively for pest bites and number of larvae collected respectively, compared to 0.87±0.09 and 0.42±0.17 respectively for the control. Thirdly, fermentation had no effect on frass performance as a biopesticide as results from 2- and 4-day fermentations showed no significant differences. In conclusion, frass can be used as both an effective biofertilizer and biocontrol agent to replace conventional chemicals.
Abstract: Farming of edible insects is on the increase globally because it can promote circular economy. However, the resultant frass is a potential environmental pollutant, despite its high content of valuable nutrients and bioactive compounds. This research investigated application of black soldier fly frass as both biofertilizer and biocontrol agent on ka...
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Research Article
Effectiveness of Some Insecticides Against Potato Aphids
Zafar Nazari
,
Astrakhanova Tamara*
Issue:
Volume 9, Issue 3, September 2025
Pages:
107-110
Received:
14 June 2025
Accepted:
30 June 2025
Published:
9 September 2025
DOI:
10.11648/j.aje.20250903.12
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Abstract: The research indicates the result of a study on the use of some new insecticides from various chemical classes to evaluate the effectiveness of some insecticides from various chemical classes on potato against potato aphids which was conducted in 20th, may 2025, in Research farm, green house and laboratory of Peoples Friendship University of Russia (RUDN) in the conditions of the weather zone of Moscow oblast on potato crops and in conditions of mass development of potato aphids in Moscow city. Potato aphids are a serious problem in the world and especially in Russian Federation. The main aim of research was to evaluate the Effectiveness of four new insecticides against potato aphids. The area of one plot was 100 m2 the insecticides were repeated two times on Potato aphids, the location of the plots were randomized. The result of the study showed that the most effective drug against potato aphids was Flupyradifurone at a consumption rate of -1000 g/ha and the least effective was Pymetrozine at a consumption rates of – 300 g/ha. Insecticides from different chemical classes showed against potato aphids, the highest value of the preserved crop over the study period was noted with the drug Flupyradifurone with a consumption rate of 1000 g/ha and amounted to 20,6 c/ha. Flupyradifurone indicated the highest efficiency against potato aphids on the 3rd day of application - 78%, and reached maximum efficiency on the 7th accounting period - 95.6%. In second place in terms of efficiency was the Dinotefuran at the level of 73% and 90% of phytophage death on the 3th and 7th day of accounting, respectively.
Abstract: The research indicates the result of a study on the use of some new insecticides from various chemical classes to evaluate the effectiveness of some insecticides from various chemical classes on potato against potato aphids which was conducted in 20th, may 2025, in Research farm, green house and laboratory of Peoples Friendship University of Russia...
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