The Influence of Fertilizers on the Carotene Content of Sweet Potatoes¹

Pigments in Vegetables

“…A study of the effect of fertilizers on carotene content in sweetpotatoes and carrots showed that high levels of nitrogen resulted in an increase of the carotene content, but no such effect from potassium was noted (Samuels and Landrau, 1952;Habben, 1973). Earlier results on the effect of the two fertilizers reported therein were contradictory.…”

Efeitos do boro em cana-de-açúcar cultivada em alguns solos do município de Piracicaba: I - Cana-planta

“…Vários trabalhos encontrados na literatura mostram que, de modo geral, não foram encontradas respostas à adição de boro na cana-de-açúcar (3,13,17,18,31,35,37,38).…”

Total Carbohydrate and Carotenoid Content of Sweet Potatoes as Affected by Cultivar and Area of Production1

“…Numerous reports (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16) indicate that many of the plant products man uses for food vary widely in nutrient content. Carotene content and soluble solids (carbohydrates) of carrots are strongly influenced by cultivar, planting date, harvest date and growing season temp (2,3,10).…”

“…Plant materials of such diverse types as carrots, cabbage, beans, potatoes, sugar cane and sweet potatoes have been shown to differ widely in their content of various nutrients depending on where they were grown. In most instances, environmental influences have exceeded cultivar influences on the specific nutrient under study (1)(2)(3)(4)(5)(6)(8)(9)(10)(11)(12)(13)(14)(15)(16). Handling practices after harvest, especially storage conditions (4-6, 8, 12, 15), also influence the nutritive value of vegetable materials.…”