AUTHOR=Anshori Muhammad Fuad , Musa Yunus , Farid Muh , Jayadi Muh , Bahrun Abd Haris , Yassi Amir , Sulaiman Andi Amran , Huang Yi Cheng , Casimero Madonna , Llorca Lizzida , Suwarno Willy Bayuardi , Putra Muh Mukhtadir , Sembiring Hasil , Purwoko Bambang Sapta , Wasonga Daniel O. , Seleiman Mahmoud F. 

TITLE=A new concept in assessing adaptability index for superior potential cropping intensity in early-maturing rice

JOURNAL=Frontiers in Sustainable Food Systems

VOLUME=Volume 8 - 2024

YEAR=2024

URL=https://www.frontiersin.org/journals/sustainable-food-systems/articles/10.3389/fsufs.2024.1407880

DOI=10.3389/fsufs.2024.1407880

ISSN=2571-581X

ABSTRACT=Implementing a cropping intensity program with rice cultivation four times a year (CI 400) can be done by using early maturing varieties. However, this development needs to pay attention to the adaptability of the varieties planted. The adaptability approach is a combination of assessing stability and productivity potential. This concept has been developed in several studies, including on rice. However, this approach is considered less comprehensive because it is non-parametric and only focuses on one stability analysis. Therefore, a systematic integration of various stability analyses, including index methods, is needed to comprehensively assess adaptability. It is especially for earlymaturing rice in South Sulawesi a dynamic climate zone and the top four highest rice producers in Indonesia. Meanwhile, this study aims to develop a comprehensive adaptability index and select the best early-maturing rice varieties, especially in South Sulawesi. The investigation was conducted in  Bone, Soppeng, and Gowa over two seasons using a nested randomized complete block design, with organized replications in each environment (location-season). Additionally, there was a significant focus on the application of five early maturing and two check rice varieties, with each factor repeated three times at each location, totaling 126 experimental units. The results showed that the adaptability index, by the combination of stability rank accumulation with yield min max standardization, was effective at assessing the yield potential and stability of early-maturing rice varieties in supporting CI 400. Inpari 13 had the best index value at 0.55, followed by Cakrabuana at 0.31, hence both were recommended as adaptive early-maturing rice varieties, especially in South Sulawesi.