Assessment of the productive traits of several Flax cultivars by effect of sowing dates

Abstract

A field experiment was carried out in Zakhikha village in Heet district, Anbar governorate – Iraq during the winter season 2020-2021 in order to study the effect of sowing dates on the growth and yield of five cultivars of flax. The experiment was applied by arranging the split plots according to the randomized complete block design (RCBD) and with three replications, main plots included four sowing dates (15th October, 1st November, 15th November and 1st December), while the secondary plots were filled with (Sub-plots). Five types of flax (Sakha1, Sakha4, Sakha5, Sakha6, and local). The most important results are summarized as follows: Sakha6 was superior in most of the studied traits, with both the highest values for plant height, number of fruiting branches, number of capsules per plant, weight of 1000 seeds, and seed yield reached 109.40 cm, 21.02 branch plant -1, 62.32 capsule plant-1, 7.83 g and 2.377 ton ha-1, except for characteristic of the number of seeds per capsule in which the variety Sakha5 outperformed, recording 8.63 seeds capsule-1. The plants sown on the date 15 th November outperformed in the number of fruiting branches, the number of capsules per plant, the weight of 1000 seeds, and the grain yield reached 20.26 branches plant-1, 64.18 capsules plant -1, 7.07 g and 2.402 ton ha-1, while the plants of the first date of 15 th October outperformed with the highest in all these The average plant height trait was 131.17 cm, while the 1st December plants outperformed with the highest average number of seeds per capsule amount to 8.24 seeds per capsule-1.