Purwaningrum Y, Asbur Y, Satriawan H, Sari M, Nurhayati. Combination of exploitation systems to optimize yield of GT1 clone in smallholder rubber (Hevea brasiliensis) plantation in Sumatera Utara, Indonesia. Plant Sci. Today [Internet]. 2023 Aug. 31 [cited 2024 Dec. 22];10(4). Available from: https://horizonepublishing.com/journals/index.php/PST/article/view/2491