Influence of droughts on the survival rate of forest crops

The results of studies of climatic conditions of Tolyatti forestry are presented, and the survival rate of forest crops is estimated. Due to difficult soil and climatic conditions, as well as violations of agricultural technology, forest crops created in the fall of 2014 have a similar safety as crops created in the spring of 2014.Low survival rate is due to annual severe droughts that lasted more than a month. Inventory data of forest crops created in the spring of 2014 characterizes the problems of droughts well. During the growing season, the average survival rate decreased to 50%. The minimum survival rate was 27%. The growing season of 2014 is characterized by very little precipitation (94 mm). Precipitation was uneven and mostly in autumn. The SCC for the period amounted to 0.4. Deviations from a multiyear average is 4-5 units. In the following years, the survival rate fell by an average of 20%, and eventually the forest crops were almost completely destroyed and were written off. The main factor that causes the death of forest crops in the early stages of development is climatic conditions. In conditions of sand, with strong evaporation of moisture from the soil, the creation of sustainable forest crops is fraught with great risk. With the current trends of climate change, reforestation and forest management practices, a significant part of the established plantings may be lost. Carrying out agrotechnical care in accordance with projects for creating forest crops has two sides. On the one hand, grassy vegetation protects the soil from drying out and contributes to the accumulation of moisture. But for forest crops, grassy vegetation comes into competition for nutrients. Due to the higher growth rate, grassy vegetation can have a shading effect, which also has a dual effect.