Grafting of the seaweed Kappaphycus alvarezii (Rhodophyta, Gigartinales) in SE‐Sulawesi, Indonesia

Abstract

The seaweed Kappaphycus alvarezii, commonly known as cottonii is the most important seaweed species cultured in Indonesia. This seaweed is widely cultivated as a main income source for communities in coastal areas of Southeast (SE) Sulawesi. In general, grafting has been rarely used in the seaweed K. alvarezii. An attempt was made to graft the K. alvarezii in the shallow waters at Bungin Permai, South Konawe, SE‐Sulawesi of Indonesia. Tissue‐cultured and local strains were selected for intra‐generic grafting. The methods of graft combinations were side‐ and straight‐slipped positions. Each combination contained 30 grafting plants. Between intra‐generic grafted plants, straight position was found to attach after 9 days. For side‐slipped position, it took 21 days to attach. In conclusion, due to easy and fast vegetative potential, high intra‐generic grafting success using straight‐slipped position method for grafting is achievable.

Soil biological quality in rhizosphere, growth, and yield of upland rice grown on acid soil after amended biochar enriched sap of Kappaphycus alvarezii

“…The seaweed Kappaphycus alvarezii liquid extract (K-sap) contains plant growth-promoting substances and essential nutrients for plant growth (Basavaraja et al 2018;Deolu-Ajayi et al 2022). The seaweed K. alvarezii is cultivated by small farmers and is widespread in the coastal waters of Southeast Sulawesi (Kasim 2016;Aslan et al 2020). The liquid extract of this seaweed (K-sap) can be used as a source of liquid organic fertilizer to enrich biochar to improve the soil biological quality in the rhizosphere and upland rice growth on acidic soils, especially in this region.…”

Effect of Acadian Marine Plant Extract Powder (AMPEP) on the growth of the Seaweed Kappaphycus alvarezii “Kulisusu“ seedlings cultivated in encircling tanks

“…The use of seedlings, named locally in North Buton, SE Sulawesi as 'Kulisusu', is one of the efforts to maintain the continuity of the quality of superior seedlings. The seedlings were originally produced by the grafting method [9,10,11,12] using prof [13,14,15] and local strain seedlings [11]. The prof seedlings were produced in 2 stages.…”