Penelitian ini bertujuan untuk mengetahui karakterisasi morfologis Trichoderma sp. isolat JB dan daya hambatnya terhadap jamur Fusarium sp. penyebab penyakit layu dan jamur akar putih (JAP) pada tanaman cengkeh dan tanaman asem. Penelitian dilakukan di Laboratorium Hama dan Penyakit Tumbuhan Fakultas Pertanian, Universitas Udayana. Variabel observasi berupa karakteristik makroskopik, meliputi warna koloni, elevasi, bentuk tepi koloni dan karakteristik mikroskopis termasuk bentuk konidiofor, fialid dan konidia. Hasil penelitian menunjukkan bahwa Trichoderma sp. isolat JB secara in-vitro pada umur 5 HSI mampu menghambat pertumbuhan koloni jamur Fusarium sp. penyebab penyakit layu pada tanaman stroberi = 63,33%, tanaman kacang panjang = 50,66%, tanaman cabai 66,67%, tanaman tomat = 89,47% dan mampu menekan pertumbuhan koloni JAP pada tanaman cengkeh sebesar 90,14 % serta JAP pada tanaman asem sebesar 81,48%.

The purpose of the research regarding The Activity of Nimba Leaves (Azadirachta Indica A. Juss.) Extract as Vegetative Pesticide on Rice Weevil (Sitophilus Oryzae L.) is to identify the characteristics of contact poison, pesticide, and antifeedan from Nimba leaves extract on rice weevil (S. oryzae L.). The research is conducted in the biology laboratory Faculty of MIPA University of Udayana. The period of the research is from April to August 2017, using the complete random framework with 6 concentration tests (10 ppm, 100 ppm, 1000 ppm, 10000 ppm, 100000 ppm concentration, and control using methanol pro analysis (PA) solvent). Each test is repeated 4 times. The data is analyzed using Analysis of Variance (ANOVA) and if there is a significant difference (P<0.05) it is followed by Duncan test to identify the difference between the different tests. The data is quantified using SPSS for windows release 12.5 the year 2003. The result indicates that the extract of Nimba leaves A. indica A. Juss. is behaving more as an antifeedan at an optimum concentration of 1000 pm during the observation 48 hours after the test. The crude extract of Nimba leaves at an optimum concentration of 1000 ppm and a maximum of 10000 ppm, during the observation 36 hours after the application, is leaning towards behaving as a contact poison to the S. oryzae L.

This research aimed to find out the effects of Trichoderma sp. fertilizers with different growing media on the vegetative growth of chili plants and to find out the best growing media to make it grow optimally.This research was conducted in the Biologi Laboratory at FPMIPA IKIP PGRI Bali from April to June, 2018. The research was done in several growing media; treatmen P0 (without the Trichoderma sp. fertilizer), P1 (Trichoderma sp. fertilizer from taro media), P2 (Trichoderma sp. fertilizer from cassava media), P3 (Trichoderma sp. fertilizer from sweet potato media), P4 (Trichoderma sp. fertilizer from corn media), P5 (Trichoderma sp. fertilizer from potato media). These treatments were repeated four times each. The population in this study were all chili pepper seeds of F1 Megatop variety with a total of 100 plants and a sample of 72 plant that were three weeks old. Each group contained of three chili plants. The data collected in this study were about the height and number of leaves on the chili plants. The data were analyzed using the analysis o variance (ANOVA) with F test and a 5% significance level followed by the LSD test.Based on the analysis, there are several effects of Trichoderma sp. fertilizer with different growing media on the vegetative growth of chili plants. The results showed that treatment P4 (Trichoderma sp. fertilizer from corn media) have the most effective and optimal effects on the chili plants.

Penelitian ini bertujuan untuk mengetahui pengaruh pupuk Trichoderma sp. dari media yang berbeda terhadap pertumbuhan vegetatif tanaman cabai dan untuk mengetahuni pada jenis media tumbuh yang dapat memberikan petumbuhan yang paling optimal. Penelitian ini dilaksanakan di laboratorium Biologi FPMIPA IKIP PGRI Bali dari bulan April sampai bulan Juni 2018. Penelitian dengan perlakuan P0 (tanpa pupuk Trichoderma sp.), P1 (pupuk Trichoderma sp. dari media talas), P2 (pupuk Trichoderma sp. dari media singkong), P3 (pupuk Trichoderma sp. dari ketela malem), P4 (pupuk Trichoderma sp. dari media jagung), P5 (pupuk Trichoderma sp. dari media kentang) yang diulang masing-masing sebanyak empat kali. Populasi dalam penelitian ini adalah seluruh bibit cabai merah besar varietas Megatop F1 dengan jumlah 100 tanaman dan sampel sebanyak 72 tanaman yang telah berumur 3 minggu dimana setiap kelompok berisi 3 tanaman cabai rawit. Data yang dikumpulkan dalam penelitian ini adalah data tentang tinggi dan jumlah daun tanaman cabai rawit. Data yang diperoleh dalam penelitian ini dianalisis dengan menggunakan analisis varian (ANAVA) dengan uji F dan taraf signifikansi 5% yang dilanjutkan dengan uji BNT. Berdasarkan hasil analisis ada pengaruh pupuk Trichoderma sp. dari media tumbuh yang berbeda terhadap pertumbuhan vegetatif tanaman cabai besar. Hasil analisis yang memberikan pengaruh paling efektif dan pertumbuhan yang paling optimal diperoleh pada perlakuan P4 (Trichoderma sp. dari media jagung).

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