Growth and yield performance of five purple sweet potato (Ipomoea batatas) accessions on colluvium soil

Mohd Ridzwan Abd Halim, . and Siti Nurjiah Abdullah, . and Erwan Shah Shari, . and Nur Arina Ismail, . and Martini Mohammad Yusoff, . and Masnira Mohammad Yusoff, . Growth and yield performance of five purple sweet potato (Ipomoea batatas) accessions on colluvium soil. pp. 975-986. ISSN 1511-3701

A study was conducted to evaluate the growth and yield performance of five purple sweet potato accessions on colluvium soil at Field 2 Universiti Putra Malaysia Serdang Selangor. The treatments comprised five purple sweet potato accessions (Accessions 1 2 3 5 and 6) arranged in completely randomized design with four replications. Maximum tuber yield of purple sweet potato was highest (p 0.05) in Accession 6 (34 563 kg ha-1) compared to the lowest yield in Accession 3 (9 331 kg ha-1). This was followed by Accession 2 (22 031 kg ha-1) Accession 1 (21 094 kg ha-1) and Accession 5 (22 900 kg ha-1). A similar trend was observed for crop growth rate (CGR) with the highest (199 kg ha-1 day-1 ) in Accession 6 and the lowest (60 kg ha-1 day-1 ) in Accession 3 (p 0.05). Accession 6 reached the critical leaf area index (LAIcrit) of 2.79 at 90 of intercepted radiation compared to the Accessions 1 2 3 and 5 that did not reach the LAIcrit. Unexpectedly the highest total intercepted photosynthetically active radiation (PAR) was recorded by Accession 3 (340 MJ m-2) whereas Accession 6 showed the lowest (309 MJ m-2). In contrast the highest radiation use efficiency (RUE) was obtained by Accession 6 with 7.58 g MJ-1 and the lowest was Accession 3 (2.16 g MJ-1 ). However there was no significant difference in RUE among the rest of the accessions except for Accession 6. To maximize the tuber yield Accession 6 is the choice for cultivation in colluvium soil.

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Abstract

A study was conducted to evaluate the growth and yield performance of five purple sweet potato accessions on colluvium soil at Field 2 Universiti Putra Malaysia Serdang Selangor. The treatments comprised five purple sweet potato accessions (Accessions 1 2 3 5 and 6) arranged in completely randomized design with four replications. Maximum tuber yield of purple sweet potato was highest (p 0.05) in Accession 6 (34 563 kg ha-1) compared to the lowest yield in Accession 3 (9 331 kg ha-1). This was followed by Accession 2 (22 031 kg ha-1) Accession 1 (21 094 kg ha-1) and Accession 5 (22 900 kg ha-1). A similar trend was observed for crop growth rate (CGR) with the highest (199 kg ha-1 day-1 ) in Accession 6 and the lowest (60 kg ha-1 day-1 ) in Accession 3 (p 0.05). Accession 6 reached the critical leaf area index (LAIcrit) of 2.79 at 90 of intercepted radiation compared to the Accessions 1 2 3 and 5 that did not reach the LAIcrit. Unexpectedly the highest total intercepted photosynthetically active radiation (PAR) was recorded by Accession 3 (340 MJ m-2) whereas Accession 6 showed the lowest (309 MJ m-2). In contrast the highest radiation use efficiency (RUE) was obtained by Accession 6 with 7.58 g MJ-1 and the lowest was Accession 3 (2.16 g MJ-1 ). However there was no significant difference in RUE among the rest of the accessions except for Accession 6. To maximize the tuber yield Accession 6 is the choice for cultivation in colluvium soil.

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Item Type:	Article
AGROVOC Term:	Ipomoea batatas
AGROVOC Term:	Sweet potatoes
AGROVOC Term:	Convolvulaceae
AGROVOC Term:	Soil
AGROVOC Term:	Field experiments
AGROVOC Term:	High yielding varieties
AGROVOC Term:	Stems
AGROVOC Term:	Growth rate
AGROVOC Term:	Leaf area index
AGROVOC Term:	Plant cultivation
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 06:29
URI:	http://webagris.upm.edu.my/id/eprint/24795

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