Gambir (Uncaria gambir) is a herbaceous plant that has alkaloid level sin the form of chemicall compounds suchas catechins, tannin catecu (tannin/tannat), querchitin, flouresin, and several other compounds. The aim of this study is to deterine the effectiveness of the concentration of gambir leaf extract (U. gambir Roxb), against the mortality of fire caterpillarpest (S.asigna). Research was arrenged in anonfactorial Randomized Block Design (RBD) with 5 treatments, namely U0: No Application (Control), U1: Application with 8% gambier leaf extract, U2: Application with 16% gambier leaf extract, U3: Application with 24% gambier leaf extract and U4: Application with 32% gambier leaf extract. The results showed that effective application of gambier leaf extract was at concentration of 32% where at 5 days after the application the mortality rate offire caterpillar had reached 100% and suppressed the intensity of leaf attacks by14.28%. Keywords: Botanical Pesticide, Uncaria gambir extract, Setothosea asigna.
Meningkatnya kesadaran manusia terhadap masalah lingkungan, penggunaan pupuk anorganik dalam bentuk padatan maupun cair secara perlahan akan dikurangi dan ditingkatkan ke penggunaan pupuk yang ramah lingkungan. Daun kipahit sebagai salah satu tumbuhan yang bisa dijadikan POC, karena memiliki kandungan suplemen atau kadar unsur hara dan biomasa yang cukup tinggi. Pengabdian masayarakat ini bertujuan untuk menyampaikan pengetahuan tentang pembuatan pupuk organik cair (POC) dari daun kipahit, dan aplikasi penggunaan daun POC daun kipahit untuk meningkatkan hasil produksi bayam merah. Kegiatan pengabdian masyarakat ini dimulai dengan tahapan uji coba lalu dilakukan sosialisasi selama satu hari yang melibatkan mitra, yaitu ibu PKK dari Desa Tanjung Sari Kecamatan Batang Kuis. Berdasarkan hasill yang diperoleh dari tahap uji coba, pemberian pupuk POC berbahan dasar daun kipahit terhadap penyiraman pada tanaman bayam merah yang telah dilakukan memiliki pengaruh pertumbuhan yang sangat signifikan. Hasil visual tanaman secara langsung, tanaman bayam merah yang diaplikasikan dengan POC terlihat diameter batang lebih panjang dan besar. Selanjutnya dari kegiatan sosialisasi terlihat nntusias mitra sangat terlihat dengan respon positif dan banyaknya pertanyaan serta rasa ingin tahu yang besar tentang proses pembuatan dan manfaat POC daun kipahit.
The aim of this study was to determine the effects of oil palm empty bunches (OPEFB) and sawdust as growing media for the growth of white oyster mushroom (Pleurotus ostreatus). This study was conducted at an oyster mushroom cultivation farm located at Jl. STM Ujung Medan, from October 2020 to January 2021. The experimental design was a randomized completely block design (RCBD) with one factor, namely the composition of the growing medium (oil palm empty bunches and sawdust) with 3 levels of treatment; S1 : 100% wood sawdust, S2 : 100% OPEFB, and S3 : 50% OPEFB + 50% wood sawdust. The observation included the mycelium initial growth time (days), fruits body growing time (days), hood width (cm), body diameter (cm), length of stalk (cm), and wet weight of the white oyster mushrooms after harvesting (g). The results showed that the treatment of OPEFB and sawdust had no significant effect on the mycelium initial growth time, body growth time, white oyster mushroom body diameter, white oyster mushroom stalk length, and the wet weight of white oyster mushrooms after harvesting. This result indicates that OPEFB can be used as an alternative growing media for cultivating white oyster mushroom, it can be single or combined with wood sawdust.
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