STABILITY ANALYSIS FOR SOYBEAN IN AGROFORESTRY SYSTEM WITH KAYU PUTIH
Penulis/Author
Taufan Alam, S.P., M.Sc. (1); Ir. Budiastuti Kurniasih, M.Sc., Ph.D. (2); Prof. Priyono Suryanto, S.Hut., M.P., Ph.D. (3); Dr. Panjisakti Basunanda, S.P., M.P. (4); Ir. Supriyanta, M.P. (5); Dr. Erlina Ambarwati, S.P., M.P. (6); Muhammad Habib Widyawan, S.P., M.Si. (7); Ir. Suci Handayani, M.P. (8); Prof. Dr. Ir. Taryono, M.Sc. (9)
Tanggal/Date
2019
Kata Kunci/Keyword
Abstrak/Abstract
Yield stability testing is an important component of the breeding before a cultivar is recommended and released for farmers. The objective of this study was to provide the best estimates of genotype mean yields in every soil types for soybean cultivars recommendations in an agroforestry system with kayu putih across three locations, which have three different soil types, i.e., Lithic Haplusterts, Ustic Epiaquerts, and Vertic Haplustalfs. The experiment was conducted in agroforestry system with kayu putih at Menggoran Forest Resort, Gunungkidul Regency, Special Province of Yogyakarta, Indonesia. The stability analysis was conducted using Shukla model and the effects of soil types on soybean cultivars were predicted using empirical best linear unbiased prediction (EBLUP). Thus, cultivars were treated as random effects to select and obtain the EBLUPs of the best cultivars in each soil types. Three soybean cultivars, i.e., Anjasmoro, Argomulyo, and Burangrang were categorized as fairly stable cultivars, while two cultivars, viz., Dering-I and Gema were categorized as relatively unstable based on the stability analysis. The EBLUPs revealed that cultivar Dering-I showed the highest yield at two soil types, i.e., Lithic Haplusterts and Ustic Epiaquerts of 1.33 and 1.25 tons.ha-1, respectively. However, soybean cultivar Burangrang in the Vertic Haplustalfs yielded 1.06 tons.ha-1. Therefore, this study can be used to provide recommendations of soybean cultivars, which had high stability and best performance for specific soil type.
