Indonesia is now the largest producer of carrageenophyte seaweeds, particularly Kappaphycus alvarezii (‘cottoni’ in the industry). Although it is widely acknowledged that there is substantial seasonal and regional variation in production and product quality of farmed K. alvarezii, this variability has not previously been systematically assessed in terms of production (growth and survival) and product quality (carrageenan content, gel strength and viscosity) in Indonesia. This study evaluated K. alvarezii cultured using standard techniques at 10 different geographic locations in Indonesia. Production over the 45-day trial period was highly variable, ranging from a high of (mean ± SE) 2819 ± 124 g.m⁻¹ per rope (Bontang site) to (mean ± SE) 848 ± 66.7 g.m⁻¹ to 495 ± 25.2 g.m-1 for the poorest-performing sites (Mamuju, Gorontalo, Manado and Banten). Carrageenan content of cultured K. alvarezii also varied between sites, from 26.4 % (Mamuju site) to 8.6–11.7 % (Lombok and Bantaeng sites). Gel strength ranged from 735.2 g.cm^-2 (Manado) to 291.5 g.cm^-2 (Bantaeng), and viscosity from 138.8 cP (Lombok) to 30.0 cP (Gorontalo). Overall, the sites with the ‘best’ product quality from culture K. alvarezii were Banten and Mamuju, and the ‘worst’ was Bantaeng. This variability in product quality data across growing regions is widely acknowledged by the industry but, to date, had not been evaluated using standardised approaches to farming. These results can be utilised to select and evaluate better-performing K. alvarezii cultivars, with a view to improving overall productivity of seaweed farming in Indonesia.

印度尼西亚现在是角叉菜藻类海藻的最大生产国，尤其是卡帕菲克斯藻（Kappaphycus alvarezii）（该行业中的“ cottoni”）。尽管人们普遍认识到养殖的K. alvarezii的产量和产品质量存在明显的季节性和区域性变化，但以前尚未就生产（生长和存活）和产品质量（角叉菜胶含量，凝胶强度）系统地评估过这种变化。和粘度）。这项研究评估了在印度尼西亚的10个不同地理位置使用标准技术培养的K. alvarezii。在45天的试用期内，产量变化很大，范围从（平均±SE）2819±124 gm ^-1高对于性能最差的站点（Mamuju，Gorontalo，Manado和Banten），每条绳索（Bontang站点）为（平均±SE）848±66.7 gm ^-1至495±25.2 gm-1。养殖的K. alvarezii的角叉菜胶含量在站点之间也有所不同，从26.​​4％（Mamuju站点）到8.6-11.7％（Lombok和Bantaeng站点）。凝胶强度为735.2 g.cm ^-2（万鸦老）至291.5 g.cm ^-2（万丹），粘度为138.8 cP（龙目岛）至30.0 cP（哥伦打洛）。总体而言，具有最高文化品质的产地来自K. alvarezii。是万丹和Mamuju，最差的是万丹。整个生长地区的产品质量数据的这种可变性已为业界所公认，但迄今为止，尚未使用标准化的耕作方法对其进行评估。这些结果可用于选择和评估性能更好的K. alvarezii品种，以提高印度尼西亚海藻养殖的整体生产力。