Abstract. Heriza S, Buchori D, Harahap IS, Maryana N. 2021. Response of termite communities to natural forest conversion. Biodiversitas 22: 5092-5096. Natural forest conversion can affect termite communities resulting from the various types of land use conversion. This study aims to examine the impacts of natural forest conversion on termite communities based on species richness, feeding groups, and termite species composition. Four land use types were evaluated on a gradient from the least to the most disturbing: natural forest, plantation forest, oil palm plantations and settlements. The method used to observe termites in this study is a plot measured 50 m x 10 m and was divided into sub-plots of 5 m x 5 m. The termites were collected from leaf litter and soil, dead wood, trunks, and nests. The response of the termite community to the conversion of natural forest functions into other forms of land use types, where for termite species richness, there was no significant differences between land uses, but for abundance and based on feeding groups there were difference between them.

Pengabdian masyarakat penting untuk dilakukan guna mengembangkan tatanan maupun taraf hidup masyarakat di suatu daerah. Salah satunya di Nagari Sungai Kambut yang mana banyak penduduknya belum atau tidak bekerja dan sebagian lainnya hanya mengurus rumah tangga. Jumlah petani maupun pekebun juga tidak begitu banyak. Oleh sebab itu dilakukan pengabdian berupa pendampingan dalam mengoptimalkan pemanfaatan pekarangan rumah untuk ditanami buah-buahan. Harapannya dapat menambah pengetahuan dan meningkatkan keterampilan penduduk setempat. Buah-buahan yang dihasilkan juga bisa menjadi sumber penghasilan, selain hanya untuk konsumsi sendiri. Kegiatan pengabdian diawali dengan sosialisasi, penyuluhan dan diikuti pendampingan penanaman tanaman buah. Selama sosialisasi warga aktif melontarkan berbagai pertanyaan baik dari cara menanam, pemeliharaan bahkan pasca panen. Melihat respon masyarakat yang antusias menunjukkan program pengabdian ini mempu meningkatkan pengetahuan tentang pentingnya pemanfaatan pekarangan, terutama untuk penanaman buah. Antusiasme mereka menjadi bukti rasa ingin tahu yang cukup tinggi. Di samping itu, kegiatan ini menjadi sarana pembelajaran masyarakat serta mampu melatih mahasiswa untuk mendorong masyarakat, sehingga mau melakukan penanaman buah melalui pemanfaatan lahan pekarangan.

Kegiatan penelitian Dinamika Populasi Lalat Buah (Diptera: Tephritidae) Pada Tanaman Buah-Buahan DiKabupaten Dharmasraya ini telah dilakukan mulai pada tanggal 1Agustus 2016 sampai dengan tanggal 10November 2016 di Kabupaten Dharmasraya. Kegiatan penelitian ini adalah sebuah penelitian untuk memperkayapengetahuan mengenai lalat buah yang meliputi kesamaan, kelimpahan, dominansi lalat buah pada tanaman buahbuahandi Dharmasraya, dan dapat membantu dalam upaya pengendalian hama lalat buah pada tanaman buahbuahanyang dibudidayakan. Data penelitian diambil dari mengumpulkan buah busuk yang ada di pasar KabupatenDharmasraya dan trapping di sentra buah-buahan di Kabupaten Dharmasraya, Propinsi Sumatera Barat kemudiandibawa ke Laboratorium Entomologi Prodi Agroekoteknologi Fakultas Pertanian Kampus III Universitas AndalasDharmasraya untuk diidentifikasi. Dari hasil penelitian ini terlihat keragaman spesies lalat buah di pasar dan disentra buah-buahan di Kabupaten Dharmasraya sangat rendah dan di dominansi oleh spesies Bactroceracarambolae dan Bactrocera papayae, dan ditemukan 6 spesies lalat buah yang ada di lokasi pasar dan sentra buahbuahan di Kabupaten Dharmasraya yaitu Bactrocera papayae Drew & Hancock, Bactrocera carambolae Drew &Hancock, Bactrocera umbrosa Fabricius, Bactrocera cucurbitae Coquillete, Bactrocera caudata Fabricius danBactrocera albistrigata de Maijere (Diptera:Tephritidae).Kata Kunci: populasi, lalat buah, tanaman buahABSTRACTResearch activities Fruit Fly Dynamics Population (Diptera: Tephritidae) On Fruit Plants In DharmasrayaDistrict has been done starting on August 1st ,2016 until November 10th, 2016 at Dharmasraya District. Thisresearch activity are research to enrich the knowledge of fruit flies that include similarity, abundance, dominanceof fruit flies in fruit crops in Dharmasraya, and can help in the effort to control fruit fly pests on fruit tree. Datawere taken from collected rotten fruit on the market Dharmasraya and trapping in the center of fruits inDharmasraya Regency, West Sumatra Province and then taken to the Laboratory of Entomology Faculty ofAgriculture Campus III University of Andalas Dharmasraya will be identified. From the results of this study looksdiversity of species of fruit flies in the market and at the central fruit in Dharmasraya very low and in dominanceby species Bactrocera carambolae and Bactrocera papayae, and found six fruit fly species that exist in the marketplace and center for fruits in the District Dharmasraya namely Bactrocera papayae Drew & Hancock, Bactroceracarambolae Drew & Hancock, Bactrocera umbrosa Fabricius, Bactrocera cucurbitae Coquillete, Bactroceracaudata Fabricius and Bactrocera albistrigata de Maijere (Diptera: Tephritidae).Key words: Population, Fruit Flies, Fruit Crops

Effectof Residual Fertilizer P on MTI to Land P StatusandResults Paddy Fieldon MT II in District Dharmasraya West Sumatera. Upland converted to paddy field, and intensively fertilized for 30 years causes the soil phosphorus (P) to be very high and the plant does not respond to the fertilization of P. P fertilizer residues given in the previous planting season needs to be studied its utilization for the next planting. This study aimed to examine the effect of P fertilizer residue on MT I with high P status to P status and paddy rice yield on MT II in Dharmasraya Regency. The research was conducted from August-December 2013 on newly established paddy field in Dharmasraya District with Typic Hapludults soil type. The results showed that the application of P fertilizer at MT I with high rate on the high P status was proven to be utilized by plant on MT II. However, to obtain high productivity of the plant is still needed additional P fertilizer. The residue of P fertilizer on MT I can still be utilized to increase yield on MT II by 8.46% from 4,444 kg dried milled grain/ha to 4,820 kg dried milled grain/ha. The increase of P fertilizer rate no longer has a significant effect on the increase of dried grain yield. ABSTRAK Lahan kering yang dikonversi menjadi sawah, dan diberi pupuk secara intensif selama 30 tahun menyebabkan kadar hara fosfor (P) tanah menjadi sangat tinggi dan tanaman tidak respon terhadap pemupukan P. Residu pupuk P yang diberikan pada musim tanam sebelumnya perlu dikaji pemanfaatannya untuk tanaman berikutnya. Penelitian ini bertujuan untuk menguji pengaruh residu pupuk P pada MT I pada lahan sawah berstatus P tinggi terhadap status P tanah dan hasil padi sawah pada MT II di Kabupaten Dharmasraya. Penelitian dilaksanakan dari bulan Agustus-Desember 2013 pada sawah baru mapan di Kabupaten Dharmasraya dengan jenis tanah Typic Hapludults. Hasil pengkajian menunjukkan pemberian pupuk P pada MT I dengan dosis tinggi pada sawah dengan status P tinggi, terbukti masih bisa dimanfaatkan tanaman pada MT II. Namun demikian, untuk mendapatkan produktivitas tanaman yang tinggi masih diperlukan tambahan pupuk P. Residu pupuk P pada MT I masih dapat dimanfaatkan untuk meningkatkan hasil pada MT II sebesar 8,46% dari 4.444 kg GKG/ha menjadi 4.820 kg GKG/ha. Peningkatan takaran pupuk P selanjutnya tidak lagi berpengaruh nyata terhadap peningkatan hasil gabah kering giling. Kata kunci: padi sawah, pemupukan, fosfor, pengaruh residu.

Decomposition is an important process in nature, as it can break down organic matter into smaller particles and nutrients. Nutrients are returned to the environment and can be reused by other organisms. One important organism that plays a role in the decomposition process is termites because termites are able to decompose organic matter such as wood in all habitats. Different termite habitats can be seen in terms of different types of land use. Some types of land use, such as natural forests, secondary forests, palm oil plantations, and settlements, can be used as a test site for wood decomposition by termites. All types of land use can be found in Dharmasraya Regency, West Sumatra Province. The purpose of this study was to study the decomposition of wood by termites in several different types of land use. Four types of land use are selected from habitats with the least disturbed conditions to the extent of high habitat disturbances, namely natural forests, secondary forests, palm oil plantations, and settlements. The study was conducted in Dharmasraya Regency, West Sumatra Province. The research method uses pine wood bait (Pinus merkusii), measuring 1.9 cm x 1.9 cm x 25 cm. The wooden bait is winded for seven days, and the wood bait is weighed to gain its initial weight and measured moisture content. Furthermore, wood bait that has been installed is observed and re-weighed to gain final weight and measured water content. The results showed that deforestation in Dharmasraya, West Sumatra had an effect on reducing wood decomposition by termites. Five (5) termite species were found in wood bait, including Pericapritermes sp.1, Microtermes sp.1, Schedorhinotermes sp.1, Macrotermes gilvus, and Coptotermes curvignathus.