Due to the population growth and increasing per capita consumption of edible vegetable oils, the promotion and development of growing oilseed crops is important. Rapeseed is one of the most important oilseed crops that is adapted to the climatic conditions of different regions in Iran. Planting second crop in paddy fields is an approach for increasing the crop productivity and farmers' income. Considering the large areas of paddy fields in the North of Iran, planting rapeseed as a second crop in paddy fields can be helpful and a solution for increasing oil production and self-reliance. The aim of this study was to review researches on rapeseed cultivation as a second crop in paddy fields of the Northern provinces and provide solutions for increasing productivity andpromoting sustainable productionusing the PRISMA search strategy. Results showed that surface drainage is the best method to facilitate water outflow from the soil, due to heavy soil texture and the attendant costs. Minimum tillage for rapeseed planting in paddy fields has a relative advantage over other tillage systems. The optimal planting dates for rapeseed in Guilan and Mazandaran provinces, Iran were found to be from October 10 to November 15 and October 15 to November 10, respectively. The application of top dressing nitrogen fertilizer at the beginning of stem elongation and prior to flowering stages enhance grain yield and improve nitrogen fertilizer use efficiency of rapeseed.Additionally, proper harvesting time, optimal plant density, optimum nutrient management, use ofhigh quality seeds, early maturing and adapted cultivars play important role in the sustainable production of rapeseed in paddy fields of the Northern provinces of Iran.
Rabiee M, Shaker Kouhi S. Second cropping of rapeseed (Brassica napus L.) in paddy fields: A rview of researches to meet challenges and production sustainability. Iranian Journal of Crop Sciences. 2024; 26 (3) :224-240 URL: http://agrobreedjournal.ir/article-1-1378-en.html