The green apple aphids' biological peculiarities (Aphis pomi Deg.) were looked upon. The modern bioinsecticide's impact on the green apple aphid quantity was researched in SouthWestern Forest-Steppe of Ukraine. The efficiency of microbiological preparations against phytophag was set (65,0-89,7%). It was established that the preparation of Achtarophyt had the highest efficiency against the green apple aphid, concentrate emulsion had the result 89,7% through 7 days after the third treating. The

It was found that the rate of detoxification of pesticides depends on their physicochemical properties and correlates with the polarity of the compounds. According to the magnitude of dipole moments, the studied pesticides are divided into three groups: nonpolar with µ from 0 to 2 Debye (D), low-polar with µ from 2 to 6 Debye and polar with µ more than 6 Debye. Non-polar pesticides are practically insoluble in water and their decay period in the ecosystem is longer than that of low-polar and polar pesticides. Peculiarities, speed and dynamics of pesticide detoxification in the apple orchard ecosystem have been studied. It was found that non-polar pesticides decompose at a rate of 0.07–0.12±0.05 parts per day, and low-polar pesticides — at a rate of 0.15–0.22±0.05 parts per day. On the tenth day after spraying, 0.05 to 1.24 mg/kg of the studied pesticides were detected in apple fruits and from 0.15 to 4.41 mg/kg in apple leaves. The classification of pesticides according to the degree of danger was carried out and it was found that the studied drugs have a degree of danger from 3 to 6. Pesticides with 3 degrees of danger are more dangerous to humans and biota and require more detailed regulation, regulation and control. The seasonal load of pesticides (H) for the intensive chemical system was 29.5 kg/ha, for the advanced system — 10.5 kg/ha and for the system of biological and chemical protection — 0.45 kg/ha. The weighted average hazard (Q) in the intensive chemical protection system was 5.0, for the advanced system — 4.9, and for the biological and chemical protection system — 6.8. It was found that the agroecotoxicological index for all protection systems was less than 1, all protection systems are not very dangerous and do not lead to ecosystem pollution. For the intensive system of chemical protection, this figure ranged from 0.24 to 0.49, for the advanced — from 0.014 to 0.025, and for the system of biological and chemical protection — from 6·10–5 to 8·10–5.

The main indicators of soil fertility based on the results of an agrochemical survey of agricultural lands in Chernivtsi region in the XI round (2016–2020) are given. It was established that the acidity of the soil solution in the region is dominated by lands close to neutral (31.8%) and neutral (36.5%). The weighted average indicator of saline pH is 5.8, which corresponds to a close to neutral reaction of the soil solution. According to the level of humus provision, soils with an average humus content prevail (66.7%), and the weighted average humus content in the region is 2.7%. According to the content of easily hydrolysable nitrogen, most of the lands have very low (48.3%) and low nitrogen content (48.7%). The weighted average indicator of easily hydrolysable nitrogen content for the reporting period is 106.4 mg/kg of soil, which corresponds to the low availability of this element. The region is dominated by lands with an average content of mobile phosphorus compounds (31.5%) and the average weighted indicator of the content of mobile phosphorus compounds is 56 mg/kg, which corresponds to average availability. In terms of the content of mobile compounds of potassium, lands with a very high content of potassium prevail (51.5%), although the weighted average indicator of the content of mobile compounds of potassium is 78 mg/kg, which corresponds to the average supply of the macroelement. It was established that in the Chernivtsi region the largest area is occupied by soils of average quality (68.5%), and the weighted average assessment of agricultural land in the Chernivtsi region is 51. A comparison of the quality assessment of the soils of the Chernivtsi region for the 10th (2011–2015) and 11th rounds (2016–2020) of agrochemical surveys was made. The results showed that the quality of the soils in the Kelmentsi and Kitsman districts has hardly changed. The soil quality assessment of Novoselytskyi, Hertsaivskyi, Vyzhnytskyi and Hlybotskyi districts improved by 3–6 points. The qualitative assessment of the condition of the lands of Khotynskyi (+8 points), Storozhynetskyi (+13 points) and Sokyryanskyi (+19 points) districts improved significantly. A decrease in land quality indicators was recorded in Zastavnivskyi (–3 points) and Putilskyi (–4 points) districts.

Досліджено стан забруднення ґрунтів сільськогосподарських угідь Чернівецької області рухомими формами міді, цинку, свинцю, кадмію, кобальту та марганцю . Встановлено, що вміст рухомих сполук цинку, міді та марганцю у ґрунтах Чернівецької області знаходиться переважно на рівні фонових значень. Загальна площа земель із різним ступенем забруднення сполуками свинцю по Чернівецькій області складає 62,9 % обстеженої площі, 66 % обстеженої площі ґрунтів забруднено рухомими сполуками кадмію, а  0,3% обстеженої площі області забруднено рухомими сполуками кобальту.

The modern bioinsecticides impact was researched on the main apple agrocenosis in Western Forest-steppe of Ukraine. It has been determined that the microbiological preparations efficiency against the apple aphid (Schizotetranychus pruni Oudms), against garden spider mite and against the godling moth (Laspeyresia pomonella L.). It has been established that the mixture of biological preparations Koloradocide, powder in norm 3 kg/ha, and Gaubsin, solution in norm 10 l/ha have shown the synergestic effect and high impact on phytophages.