Growth Pattern of Sunflower on Some Light Intensity in the Coastal Land

Abstract

Growth is quantitative development. Crop growth determined crop yield level, so that needs studied. Affecting factor of crop growth pattern is light intensity. Crop response on light intensity different for each crop species. This research aimed to study Sunflower growth pattern on some light intensity at the coastal land. Research conducted in the Bugel II coastal land, Bugel Village, Panjatan District, Kulonprogo Regency, Yogyakarta Province. The research was conducted by a single factor experimental method. Light Intensity variation with three levels is the intensity of 100%, 75%, and 45% tested in this research. The treatment tested was arranged by Randomized Complete Block Design (RCBD). That studied vaiable, are Leaf Area Index (LAI), Net Assimilation Rate (NAR), Crop Growth Rate (CGR), the correlation between CGR with LAI, the correlation between CGR with NAR, and Harvest Indeks. The research result showed that LAI, NAR, and CGR increased by increasing light intensity. LAI increasing followed by CGR increasing, and Harvest Index decreased on low intensity. Generally, Sunflower growth patterns in the coastal land increased along with increasing light intensity.