Investigating the relationship between cultivation and yield of Brassica napus L. in Torbat Heydarieh’s Kadkan villages

Recently, the development of canola (Brassica napus L.) cultivation has attracted the attention of agricultural managers due to its favorable characteristics and the need for oil self-sufficiency. The present study was conducted to evaluate and analyze canola cultivation and yield in Torbat Heydariyeh Kadkan district. For this purpose, data on harvest levels, number of users and canola yields were examined during four years. Harvest levels in 2016, 2017, 2018 and 2019 were 20.3, 28.3, 26 and 22.15 hectares, respectively. Also, the weighted average yield of canola farms in Kadkan district during the mentioned years was 2.5, 3.4, 3.8 and 4 tons per hectare, respectively. The correlation of harvest data and yield of 28 rapeseed farms in the Torbat Heydariyeh Kadkan villages was adjusted with two linear and 3-parametric sigmoid models. The 3-parameter sigmoid model had a higher accuracy than the linear model due to the higher correlation coefficient (R= 0.65**) and the mean square error (RMSE = 0.85) Based on the sigmoid model, yield increased with increasing rapeseed cultivation levels and then stabilized. There was a significant relationship between the level and yield of canola in the four-year period (R = 0.6**), so that as the level of cultivation increased, the yield also increased. The production of 15 canola codecs in Kadkan during 33 years was 335 tons. To develop canola cultivation among farmers in Kadkan, programs such as increasing the guaranteed purchase price, timely supply of seeds, increasing incentive policies, developing efficient canola machines such as grain harvesters, equipping combine harvesters with canola harvesting heads, development of type irrigation and other new methods of irrigation, development of canola cultivation, development of joint ship projects, creation of shopping centers and collection of rapeseed from farmers, research to identify cold-tolerant cultivars to reduce cold sensitivity and development of the program Promotional training, especially when planting, watering and harvesting time of time is recommended. It is also advisable for agricultural managers and promoters of production areas to reduce costs and achieve greater economic efficiency and performance, encouraging major farmers to develop rapeseed cultivation.