Organic and inorganic fertilisers influence sweet potato (Ipomoea batatas L.) performances under BRIS, peat, silty clay and clay soil

NurulNahar E., . and Engku Hasmah E. A., . and Erwan Shah S., . and Mohd Rani A., . and Khairol I., . and Rosnani A. G., . (2024) Organic and inorganic fertilisers influence sweet potato (Ipomoea batatas L.) performances under BRIS, peat, silty clay and clay soil. Journal of Tropical Agriculture and Food Science (Malaysia), 52 (1). pp. 93-104. ISSN 1394-9829

The sweet potato is one of the most economically important food crop and is recognised as a highly nutritious food. Sweet potatoes with purple flesh are richer in anthocyanins. This study evaluates the purple sweet potato, namely Kedudut 2, Kedudut 5 and Kedudut 6 varieties under silty clay, clay, BRIS and peat soil with three levels of organic fertiliser (0, 5 and 10 t/ha) and four levels of NPK 12:12:17 (0, 200, 400 and 600 kg/ha) on yields and total anthocyanin content (TAC). The results indicated that Kedudut 2 (560 mg/kg) produced the highest TAC compared to Kedudut 5 (276 mg/kg) and Kedudut 6 (252 mg/kg). Even though Kedudut 5 and Kedudut 6 had greater tuber yields, both had very low TAC, which may not be favourable to farmers and industries. Generally, Kedudut 2, Kedudut 5, and Kedudut 6 produced anthocyanin yields of 2.29 kg/ha, 1.24 kg/ha and 1.73 kg/ha, respectively. The tuber yields and anthocyanin yields in Bagan Datuk (silty clay) and Serdang (clay) were low. Soil with a high clay content is naturally compacted, which results in low fertiliser effectiveness and consequently reduces the tuber yield potential. It can be concluded that planting Kedudut 2 with a rate of 5 t/ha organic fertiliser and 200 kg/ha inorganic fertiliser (NPK 12:12:17) is recommended for sweet potato cultivation in Bachok, while 5 t/ha organic fertiliser and 600 kg/ha inorganic fertiliser are recommended in Pontian for maximum marketable yield and consequently maximise the anthocyanin yields.

Full text available from: Official URL: http://jtafs.mardi.gov.my/index.php/publication/jt...

Abstract

The sweet potato is one of the most economically important food crop and is recognised as a highly nutritious food. Sweet potatoes with purple flesh are richer in anthocyanins. This study evaluates the purple sweet potato, namely Kedudut 2, Kedudut 5 and Kedudut 6 varieties under silty clay, clay, BRIS and peat soil with three levels of organic fertiliser (0, 5 and 10 t/ha) and four levels of NPK 12:12:17 (0, 200, 400 and 600 kg/ha) on yields and total anthocyanin content (TAC). The results indicated that Kedudut 2 (560 mg/kg) produced the highest TAC compared to Kedudut 5 (276 mg/kg) and Kedudut 6 (252 mg/kg). Even though Kedudut 5 and Kedudut 6 had greater tuber yields, both had very low TAC, which may not be favourable to farmers and industries. Generally, Kedudut 2, Kedudut 5, and Kedudut 6 produced anthocyanin yields of 2.29 kg/ha, 1.24 kg/ha and 1.73 kg/ha, respectively. The tuber yields and anthocyanin yields in Bagan Datuk (silty clay) and Serdang (clay) were low. Soil with a high clay content is naturally compacted, which results in low fertiliser effectiveness and consequently reduces the tuber yield potential. It can be concluded that planting Kedudut 2 with a rate of 5 t/ha organic fertiliser and 200 kg/ha inorganic fertiliser (NPK 12:12:17) is recommended for sweet potato cultivation in Bachok, while 5 t/ha organic fertiliser and 600 kg/ha inorganic fertiliser are recommended in Pontian for maximum marketable yield and consequently maximise the anthocyanin yields.

[error in script]

Item Type:	Article
AGROVOC Term:	Ipomoea batatas
AGROVOC Term:	tubers
AGROVOC Term:	organic fertilizers
AGROVOC Term:	inorganic fertilizers
AGROVOC Term:	anthocyanins
AGROVOC Term:	yields
AGROVOC Term:	nutrient management
AGROVOC Term:	cultivation
Geographical Term:	Malaysia
Uncontrolled Keywords:	sweet potato, total anthocyanin content
Depositing User:	Ms. Azariah Hashim
Date Deposited:	20 Nov 2025 09:06
Last Modified:	20 Nov 2025 09:06
URI:	http://webagris.upm.edu.my/id/eprint/2677

Actions (login required)

View Item