Evaluation of planting date and irrigation cut on quality and quantity of Buckwheat produced seeds.

Nouri gheshlagi, Hafez (2020) Evaluation of planting date and irrigation cut on quality and quantity of Buckwheat produced seeds. Masters thesis, University of Mohaghegh Ardabili.

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Abstract

Buckwheat (Fagopyrum esculentum L.) belongs to Polygonaceae family is one of the most important crops in temperate climate. Due to the resources and ecological conditions of Ardabil plain, it is possible to cultivate buckwheat in it. This experiment was performed to determine the best planting date and the effect of irrigation cut-off times at the end of the growing season on the uniformity of buckwheat seeds. Research Methodology: This experiment was performed to investigate the effect of planting date and cessation of irrigation as a factorial split plot based on a randomized complete block design in Ardabil plain. Experimental treatments include planting date in three levels: first (10 may 2019), second (17 may 2019) and third (24 may 2019) in the main plots and stop irrigation at three levels (full irrigation, Irrigation interruption in 50% of grain maturity, irrigation interruption in 75% of grain maturity) in subplots and in three replications. Measured traits including plant weight, yield, harvest index, total biomass, chlorophyll index, 1000-seed weight, plant height, seed vigor and vigor index (longitudinal index) in seed production were calculated and compared by Duncan's test. . Results: The results of analysis of variance showed that yield was affected by planting date and time of irrigation cut so that the highest yield was obtained on the first planting date and in plots that were irrigated until full maturity. The highest 1000-seed weight was obtained on the third planting date (24 may 2019) and in irrigation interruption in 50 and 75% of seed maturity. Planting date did not have a significant effect on seed vigor, but the highest amount of this trait was obtained in full irrigation and cessation of irrigation in 50% of seed maturity. Delay in planting buckwheat reduced the vigor index of seeds produced so that the highest length index of seedlings was obtained in the history of the first and second crops. Conclusion: According to the results of this field experiment, successful cultivation of new buckwheat in Ardabil plain is possible and the first planting date (10 may 2019) is better than later dates and showed higher yield and quality of seeds produced. Also, full irrigation helps to make the seeds ripen more uniformly and is more suitable for seed production.

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