A new series of 1,2,4‐triazine derivatives were designed, synthesized, and identified on the basis of IR, 1H‐NMR, 13C‐NMR, and EI‐MS spectral data. The potent acaricidal activity of 1,2,4‐triazine derivatives against eggs and adult female of Tetranychus urticae (Koch) was assessed compared with pyridaben under laboratory conditions. Structure acaricidal activity relationships of the promising 1,2,4‐triazine derivatives were analyzed for eggs and adult female; the nature and position of the substituents were important in demonstration of the activities.
This work aimed to study different biological aspects of the predatory mite, Cunaxa capreolus (Berlese) when fed on different diets mainly free living nematode, Rhabditis scanica Allgen and Entomobrya musatica Stach (Collembola) at 25 and 35+2 °C and relative humidity 75+5% R.H. in laboratory From the study, it was obvious that the different biological aspects (incubation period, life cycle, longevity and life span) of the predator were significantly affected by feeding on the different diets. When the two preys were compared as food, Collembola showed a higher fecundity source than using of free living nematodes as rearing food, where the number of deposited eggs of the predator was 39.11 eggs at 25 ºC, but the free living nematodes as diet was the lowest favorable one, where the predator female deposited 33.05 eggs at 35 ºC. Generally, Collembola proved to be the more suitable prey as resulted in more deposited eggs and longer life span.
The present work was carried out during 2021 and 2022 seasons at the Agricultural Research Station of Al-Marashda, Qena Governorate, Egypt to study the influence of composted sugarcane straw and endophytic fungi(EF) treatments on the growth parameters and chemical composition of Ficus sycomorus transplants in sandy soil. The field experiment was conducted in completely randomized design (CRD) in six treatments. The different 6 treatments were, sandy soil with 25% decomposed sugarcane straw(v/v), sandy soil with 50% decomposed sugarcane straw(v/v), sandy soil and EF, sandy soil with 25% decomposed sugarcane straw (v/v) and EF, sandy soil with 50% decomposed sugarcane straw (v/v) and EFas well as sandy soil alone. The obtained results evident that planting of F. sycomorus transplants in sandy soil mixed with 50% compost by volume with the addition of Chaetomium globosumas entophytic fungi resulted in the highest values of shoot length, stem diameter and the number of leaves compared to the other treatments in the 1 st and 2 nd seasons. Concerning the effects of the tested treatments on nitrogen, phosphorus, potassium, phenolic and flavonoids contents in leaves, growing transplants with the mixture of 50% compost with the sandy soil(v/v) and EF addition followed by the mixture of 25% compost with sandy soil plus EF addition resulted in the highest values of these components.
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