Wiwik HardaningsihNgakumalem SembiringSiti Khatijah M. SaadLailatun Nazirah OzairBohari M Yamin2024-05-282024-05-28201918/2/20201755-131510.1088/1755-1315/347/1/012101https://iopscience.iop.org/article/10.1088/1755-1315/347/1/012101https://oarep.usim.edu.my/handle/123456789/5536Volume 347 6th International Conference on Sustainable Agriculture, Food and Energy 18–21 October 2018, Manila, The PhilippinesThe white skin sweet orange potato (Ipomoea batatas Linn ) was grown by organic method without using any synthetic fertilizer. It was harvested after 4 months of cultivation. Scanning electron photomicrograph of both transversal and longitudinal cross sections showed the formation of starch crystals having round or spherical and polygonal shape with sizes between 2 and 30 μm. Only carbon, oxygen as major elements and small concentration of potassium, calcium and magnesium were detected by energy-dispersive X-ray spectrometry. The absence of some important essential elements demands further investigation on soil-plant nutrient uptake relationship towards the production of highly nutritional potato.en-USArticle12101121013471