Subscribe to RSS
The influence of planting time on development and yield of various cultivars of medicinal flax
In order to determine the optimum planting date for different medicinal flax cultivars, a split plot experiment with completely randomized block design with 12 treatments was conducted in experimental farm of Yasooj Islamic Azad University. The treatments were replicated 3 times. The treatments were composed of four different combinations of planting dates ((Feb. 20, Mar. 6, Mar. 21, and Apr. 4) and 3 flax cultivars (Somaco, India, and Foster). The measured traits were plant height, 1000-kernel weight, harvest index, grain yield (with 12% MC), Dry Matter, Leaf Area Index (LAI), Crop Growth Rate (CGR), Relative Growth Rate (RGR), and Net Photosynthesis Rate (NFR). The result showed that the planting date has a significant effect on all the measured traits. The first and second planting dates resulted in the highest production (1230 and 1170kg/ha) and the lowest production (600kg/ha) was obtained by the fourth date, respectively. The maximum and minimum yields were obtained by Somaco and Foster cultivars, respectively. The maximum 1000-kernel weight (5.853g) was obtained in the first planting date, and the Somaco cultivar by itself produced the highest 1000-kernel weight (6.162g).
References: 1. Beighi, O.R. (2005). Production and processing medicinal plants. Vol. 1. Astane-Ghodse Rezavi Publication. P.347.
2. Zarghari, Gh. (2004). Medicinal plants. Tehran: Tehran University Press. P.342.