ABSTRAKDiversitas Coccinellidae Predator Pada Ekosistem Pertanaman Cabai di Tiga Kecamatan Kabupaten Kuantan Singingi. Penelitian tenatang keanekaragaan dan kelimpahan Coccinellidae Predator di pertanaman cabai telah dilakukan di Kecamatan Benai, Kecaatan Kuantan Tengah dan Kecamatan Gunung Toar selama tiga bulan Desember-Februari. Penelitian bertujuan untuk mempelajari keanekaragaman, kemerataan dan kekayaan Coccinellidae Predator. Pengambilan sampel spesies Coccinellidae Predator dilakukan dengan menggunakan jaring ayun dan koleksi secara langsung pada tajuk tanaman. Keanekaragaman Coccinellidae Predator dihitung menggunakan Shannon-Wienner. Total jumlah Coccinellidae predator yang telah dikumpulkan dalam penelitian ini adalah 146 individu yang terdiri dari 11 spesies, spesies predator yang ditemukan di pertanaman cabai adalah Chilocorus melanophthalmus, Coccinella repanda, Coelophora 9 maculata, Coelophora inaequalis, Illeis cincta, Menochilus sexmaculatus, Ropaloneda decussata, Verania discolor, Verania lineata, Spesies 1 yang mempunyai potensi yang baik untuk mengendalikan kutu daun di pertanaman cabai. KATA KUNCI: Coccinellidae Predator, keanekaragaman, kemerataan, dan kekayaan.

The IAA potentials of endophytic bacteria indigenous isolated from roots palm oil in west Sumatra. Isolate were characterized on the basis of visual observation, gram staining, hypersensitive reaction and IAA producing bacteria.  Subsequently, effect on plant growth was tested by nursery palm oil used random design block. Out of 82 isolates, base on gram test 12 isolates were gram negative and 70 isolates grams positive and then results on the reaction hypersensitive test (HR test) there are 8 isolates that positive which means the isolate cannot be applied on the soil and plant. Eighty isolates selected were able to produce IAA that was between ppm 0,30ppm - 3,65ppm. Seven isolates showed clearly the growth promoting plant under field condition. Hence, these isolates are promising plant growth promoting isolates showing multiple attributes that can significantly influence the nursery palm oil. The result of present study, treatment E3.1.2 has higher plant most of the other treatment i.e. 21,93 cm and number of leaves i.e. 4,33 leaves.

<p>Penelitian ini bertujuan untuk mengetahui dosis kompos solid yang tepat dalam meningkatkan produksi sawi yang ditanam pada tanah Ultisol di polybag. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) non Faktorial  yang terdiri dari 5 taraf perlakuan dan diulang 3 kali sehingga terdapat 15 unit percobaan. Setiap unit percobaan terdiri atas empat tanaman, tiga diantaranya dijadikan tanaman sampel, sehingga terdapat 60 tanaman. Adapun perlakuan pada penelitian ini adalah : A  = (pupuk buatan saja), B  = kompos solid limbah pabrik kelapa sawit 120 g/polybag + pupuk buatan), C  = (Kompos Solid limbah pabrik kelapa sawit 240 g/polybag +  pupuk Buatan), D  = (Kompos Solid limbah pabrik kelapa sawit 360 g/polybag + pupuk Buatan) dan E  = (kontrol/tanah ultisol). Hasil penelitian ini menggunakan ANOVA yang diuji secara statistik dengan uji F, kemudian bila berbeda nyata dilanjutkan dengan uji BNJ (Beda Nyata Jujur) pada taraf 5%. Berdasarkan penelitian yang telah dilakukan dapat disimpulkan bahwa perlakuan D (Kompos Solid limbah PKS 360 g/polybag+ pupuk Buatan) merupakan perlakuan terbaik dalam meningkatkan pertumbuhan tanaman sawi pada tanah Ultisol dengan tinggi tanaman 34,39 cm, jumlah daun 10,89 helai dan berat basah tanaman 107,78 g/tanaman.</p><p> </p><p><em>This studied attempts to determine what the right dose solid compost in increasing the production of mustard on Ultisol. This study of the pot experiment at screen house. This study uses a randomized block design (RAK) nonfactorial consisted of five stages treatment and repeated 3 times so that there are 15 experimental units. Each experimental unit consisted of four plants, three of which were used as a sample plant, so there are 60 plants. The treatment in this study are: A = (artificial fertilizers only), B = (compost solid waste palm oil factory 120 g/polybag + fertilizer Artificial), C = (compost solid waste palm oil factory 240 g</em><em>/</em><em>polybag + fertilizer Artificial), D = (compost solid waste palm oil factory 360 g/polybag + Artificial fertilizers) and E = (control/soil ultisol). The result of this research using ANOVA being tested statistically by test f, if markedly dissimilar continued by test </em><em>BNJ</em><em> ( different real honest ) the first 5 percent. Based on research that has been done can be concluded treatment D (Solid compost 360 g/polybag + Artificial fertilizer) is the best treatment in promoting the growth of mustard plants in Ultisol with 34.39 cm plant height, leaf number and weight of the wet strands 10.89 plants 107.78 g / plant.</em><em></em></p>