Effect of moisture content and spraying with zinc in the yield of seeds and oil of the borage plant (anchusa azurea)‎

Abstract EN

The experiment was conducted in the greenhouses of the winter season 2016 - 2017 in Diyala Province using a factorial experiment according to Randomized Complete Blocks Design (RCBD), to study the effect of three levels of moisture content (50, 70 and 90%) of the field capacity and two treatments of spraying with zinc (0, 200 mg.L-1) in the leaves number, dry plant weight, 100 seed weight, plant seed yield and oil percentage in seeds.

The results showed that the water content at (90%) of the field capacity led to a significant increase in the leaves number, dry plant weight and plant seed yield, which reached (15.5 leaves, 38.06 g.plants-1, 2.01 g.plants-1), respectively.

While led the irrigation at moisture content (70%) of field capacity to significantly increased the weight of 100 seeds and oil percentage of seeds was 2.00 g and 29.80% respectively, In addition, the spraying of zinc produced a significant increase in all the studied indices (14.67 leaves.plants-1, 37.75 g.plants- 1, 1.96 g, 2.05 g seeds.plants-1, 29.43% oil).There was also a significant bi-interaction between the factors above, The treatment of the mixture (90% of the field capacity with spraying with zinc) gave a significant increase in seed yield and oil percentage in seeds (2.21g seeds.plants-1, 30.01%) respectively.