The Efects of Temperature and Potassium Fertilizer on the Growth, Yield, and Biochemical Parameters of Ipomoea batatas var. Antin-1
| Main Authors: | Sulistiani, Rini, Rosmayati, , Siregar, Luthfi A. M., Harahap, Fauziyah |
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| Format: | Article PeerReviewed Book |
| Bahasa: | ind |
| Terbitan: |
Publisher: Polish Botanical Society
, 2020
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| Subjects: | |
| Online Access: |
http://digilib.unimed.ac.id/51965/1/Turnitin.pdf http://digilib.unimed.ac.id/51965/2/Article.pdf http://digilib.unimed.ac.id/51965/ https://pbsociety.org.pl/journals/index.php/aa/article/view/aa.7337/7983 |
Daftar Isi:
- Te impact of temperature and potassium fertilizers on the growth, yield, and basic biochemical characteristics of sweet potato, Ipomoea batatas var. Antin1, was investigated in lowland and highland terrains. In this study we aimed to determine the diferent traits of the sweet potato, based on its morphology, physiology, and biochemical composition, following treatments with a potassium fertilizer at diferent temperatures. Te study was undertaken using a nested factorial design. Te frst factor was temperature at each of the two sites: T1 (lowland) and T2 (highland). Te second factor was potassium fertilizer (K2O) nested within the temperature factor and consisting of four levels of K: K0 (0 kg/ha), K1 (50 kg/ha), K2 (100 kg/ha), and K3 (150 kg/ha). Each potassium treatment was replicated three times at each location. Plant vegetative growth in the lowland region, with a daily average temperature of 26.8 ◦C, tended to be more bushy, with several diferent morphological properties: Te main stem was longer (160.7 cm) and spreading, the stem diameter was greater, and the petioles were signifcantly longer in the lowland plants compared with the highland plants; however, no diferences were observed in the leaf characteristics. Te diferential temperature (depending on altitude) resulted in signifcant diferences in relative growth rates (RGR) and net assimilation rates (NAR); the values for RGR-1 and NAR-1 in the lowlands were higher than those in the highlands. Te tuber weight, yield index, anthocyanin accumulation, and glucose content were signifcantly higher in the highland crops than in the lowland plants, which grew under relatively higher temperatures. Potassium applications caused signifcant diferences in the anthocyanin content (mg/100 g fresh weight), anthocyanin production (kg/ha), and glucose production (kg/ha) at diferent locations.