EFFECT OF FERTILIZER AND MULCHING MATERIALS ON GROWTH AND YIELD OF SESAME VARIETY VD11 IN NGHE AN PROVINCE

Sesame is one of three important crops in the crop rotation system in Nghe An, including spring groundnut, summer sesame and winter crops. However, in recent years, climate change in the central provinces has been seriously affecting this cropping system. Among affecting factors, high temperature and prolonged drought are the main causes of decline on productivity and economic effect in sesame production in Nghe An province. So applying of appropriate mulching materials and variety is an important technique to reduce evapotranspiration and high temperature in soil to maintain growth and stability of sesame plants in climate change conditions. The results showed that application of appropriate fertilizer and mulching materials simultaneously produces a film that reduces temperature, increases the soil moisture in hot dry conditions. Thereby, it increased the plant height, number of nodes per stem and reduced the bacterial wilt, and increased dump resistance and limited yield losses. Therefore, in the condition of climate change in Nghe An, application of fertilizer 40 kg N + 120 kg P2 O5 + 80 kg K2 O + 200 kg lime combined with black nylon muching of 110 kg/ha is the optimal solution to increase sesame productivity by more than 20% compared to the control.