Influence of phosphorous treatment and aspartic acid spray on a few aspects of oat Avena sativa L. growth and production.

Abstract

The experiment was carried out in the Abu Al-Fadl Forest Nursery, the Plant Production Department, Al-Diwaniyah Agriculture Directorate (3 km north-east of Al-Diwaniyah city) during the winter season 2021-2022 to determine the effect of four levels of phosphate fertilizer (0, 30, 60 and 90 kg P ha-1 ) and two concentrations of aspartic acid spray (0 and 200 mg aspartic L -1 ), on the growth and yield of oats Avena sativa L. Shifa cultivar. The experiment was applied according to a Randomized Complete Block Design (RCBD) by a split plot with three replicates. The levels of phosphate fertilizer were distributed in the main plots, while the concentrations of amino acids occupied the sub-plots. The results showed the following: the superiority of plants fertilized at the fertilizer level of 90 kg P ha-1 significantly on the number of tillers, the number of dahlias, the weight of a thousand grains g, the biological yield and grain yield were given 532 tillers m-2 , 468.58 dalia m-2 , 46.76 g, 56.39 mcg ha-1 , and 8.92 mcg ha-1 , respectively, the results also showed that the plants treated with aspartic acid (concentration 200 mg L -1 ) were significantly superior to the number of tillers and the number of dahlias, it gave 527.75 tillers m-2 and 483.58 Dalia m-2 . The interaction between the two experimental factors (fertilization at a level of 90 kg P ha-1 and spraying with aspartic acid at a concentration of 200 mg L-1 ) significantly affected the biological yield and grain yield. Keywords: phosphate fertilization, aspartic acid, growth, yield, oats Avena sativa L.