Effect of planting date and comparing yield between red bean cultivars in Ali-Ggoudarz, Lorestan, Iran

Hyssop with the scientific name Hyssopus officinalis belongs to the dark mint is a perennial plant that its usable parts are flowering branches، leaves and seeds. The infused vegetative body as a healing agent for the treatment of upper respiratory tract illnesses such as coughs، whooping cough، bronchitis and asthma is used. Anti-bacterial and anti-fungal properties of hyssop essential oils in food، cosmetics and health are frequently used. This study is a split plot randomized complete block design with four replications form. The treatments included four levels of nitrogen by 0، 75،150 and 225 kg per hectare and planting density in three levels were 6، 8، 10 plants per square meter. The results showed that the highest yield of dry matter and medicinal body were obtained from 10 plants per square meter. Consumption of 225 kg per hectare and lack of nitrogen in the flowering stage، respectively، generating the maximum and the lowest number of leaves per plant in the main stem. The highest yield of medicinal body with consumption of 225 kg N per hectare is recommended. The density of 10 plants per square meter and use of 75 kg N per hectare is the best treatment.