Seminar Nasional Magister Agroteknologi 2022 Volume 2023 http://dx.doi.org/10.11594/nstp.2023.3201 How to cite: Ambar, A. A., Rudy, & Ilmi, N. (2023). Arthropods diversity at paddy generative phase in rainfed rain field. Seminar Na- sional Magsiter Agroteknologi 2022. NST Proceedings. pages 1-7. doi: 10.11594/ nstp.2023.3201 Conference Paper Arthropods Diversity at Paddy Generative Phase in Rainfed Rain Field Abdul Azis Ambar, Rudy, Harsani, Nur Ilmi* Agrotechnology, Faculty of Agriculture, Muhammadiyah University of Parepare, 91112, Indonesia *Corresponding author: ABSTRACT Arthropods are the largest phylum in the animal kingdom and are found in various ecosystems, including rainfed rice fields. This study aims to deter- mine the diversity of arthropods and their diversity index. As well as the sta- tus of each arthropod in rainfed rice fields. The research method used is pur- posive random sampling, by determining the location point for arthropod sampling, which refers to the method (Sari et al., 2020). Samples were ob- tained by using 2 traps, namely sweep net traps, to catch active flying arthro- pods, or netting with a net for 10 double swings. The second is a pit fall trap, to catch arthropods on the ground. Using a beaker with a volume of 150 ml and placed parallel to the ground. The results showed that there was a diver- sity of arthropods of 35 species, including 28 species as natural enemies and 6 species as pests, with a diversity index of 2.91 which means that it is in the moderate category. Keywords: Diversity, Arthropods, rainfed rice fields E-mail: nurilmi2014@gmail.com Introduction Arthropods are the largest phylum in the animal world including insects, spiders, ticks, cen- tipedes (Apriliani et al., 2018) Arthropods have a very important and diverse role, the role of ar- thropods in general is as a destructive pest (phytophagus), parasites and predators, Arthropods play an important role in the process of exchanging energy, water and nutrients in the ecosystem (Sunarsiah et al., 2016). Arthropods are also beneficial organisms, namely as pollinating agents in agricultural areas with specifics in rice fields. Rice fields are ecosystems with various interactions contained in them. Arthropod communities play a very important role in these ecosystems (Hen- drival et al., 2017). Rice is a food crop that is widely cultivated by farmers, as the main food ingredient of most Indonesians (Siregar et al., 2014). In addition to environmental factors, in the plant ecosystem requires a balance between living things that exist in the place. If there is no balance, various prob- lems will arise, one of which is the attack of pests and plant diseases (Fitriani, 2016). As a result, it triggers farmers to carry out control with pesticides. The use of synthetic pesticides leads to the death of other insects, in addition to target pests. Beneficial insects such as natural enemies also die, while insects that have a role as natural enemies, are very helpful for humans in pest control efforts (Sari et al., 2020), besides that insects also help in maintaining the stability of food webs in an agricultural ecosystem. Arthropod group based on the diversity of its functions in the agroecosystem of rice paddy, includes insect pests and natural enemies. Natural enemies are biotic components that regulate insect pest populations in agroecosystems. Arthropods that act as natural enemies in rice paddy agroecosystems include predators and parasitoids (Hendrival et al., 2017). Based on the description above, it is necessary to identify the diversity and population of ar- thropod species, as a basis for determining the status of arthropods that will be used as biological controllers.