Effect of Planting Dates and ZnO Nanoparticles Spraying on the Some Growth Indicators, Aromatic Oil and Its Content of Active Compounds of Pimpinella anisum L. Plant

A field experiment was conducted during a winter season of 2023 in the botanical garden of the College of Basic Education - Al-Mustansiriya University to knowing the effect of planting dates and ZnO nanoparticles spraying on the some growth indicators, aromatic oil and its content of active compounds of anise plant. A split-plots arrangement according to randomized complete block design (RCBD) was used with three replications. The main plots contained two planting dates (1/11 and 15/11), whereas the sub plots contained spraying of two concentrations of ZnO nanoparticles (5 and 10 mg L-1) in addition to spraying of distilled water only (0 mg nano-Zn L-1). The results revealed that second planting date (15/11) was significantly superiority in the plant content of nitrogen (15.65 mg N g-1), plant content of phosphorous (9.72 mg P g-1), plant height (73.33 cm), main branches number (20.56 branch plant-1) and fruits number (20.33 fruit inflorescence-1). Otherwise the first date (1/11) was significantly superiority in the 1000-fruits weight (3.89 g) and aromatic oil percentage (5.26%). As well, the spraying of ZnO nanoparticles at a concentration of 10 mg L-1 was significantly superiority in plant height (73.17 cm) and 1000-fruits weight (4.21 g) and aromatic oil percentage (5.66%), while the  spraying of ZnO nanoparticles at a concentration of 5 mg L-1 was significantly superiority and gave a highest average of the plant content of nitrogen (14.98 mg N g-1), plant content of phosphorous (9.66 mg P g-1), main branches number (19.67 branch plant-1), fruits number (19.33 fruit inflorescence-1). Further, the results of HPLC analysis showed that the percentages of active compounds of anise aromatic oil were varied by the effect of planting date and spraying of ZnO nanoparticles

Closed Ideal with Respect a Binary Operation * On BCK-Algebra

In this paper, we define a new ideal of BCK-algebra, we call it a closed ideal with respect a binary operation ∗, and denoted by (∗ -closed ideal). We stated and proved some properties on closed ideal and give some examples on it. Indexing Terms/Keywords: BCK-algebra, Closed Ideal, A Binary Operation ∗ on BCK-Algebra