PENDAHULUANKandungan bahan organik tanah pada sebagian besar lahan pertanian di Indonesia telah mencapai aras rendah sampai sangat rendah, sedangkan produktivitas tanah dan keberlanjutan produksi tanaman ditentukan oleh kecukupan kandungan bahan organik tanah. Oleh karena itu, pemberian bahan organik pada tanah pertanian sudah menjadi keharusan. Salah satu bentuk bahan organik adalah kompos, yang merupakan pupuk organik yang berasal dari sisa tanaman dan kotoran hewan yang telah mengalami proses dekomposisi atau pelapukan. Kompos merupakan salah satu komponen untuk meningkatkan kesuburan tanah dengan memperbaiki kerusakan fisik tanah akibat pemakaian pupuk anorganik (kimia) pada tanah secara berlebihan yang berakibat rusaknya struktur tanah dalam jangka waktu lama.Salah satu bahan baku kompos yang sangat melimpah di Provinsi Lampung adalah gulma kiambang (Salvinia natans) yang keberadaannya telah menutupi hampir 80% permukaan wakduk

Lada (Piper nigrum L.) merupakan tanaman rempah yang memiliki peran penting dalam meningkatkan perekonomian Indonesia. Upaya peningkatan produktivitas lada di Indonesia khususnya di Lampung karena mengalami penurunan. Penelitian ini bertujuan untuk mendapatkan pengaruh pemberian pupuk kompos black soldier fly dalam meningkatkan produktivitas tanaman lada. Penelitian ini dilaksanakan di kebun praktikum Politeknik Negeri Lampung, pada bulan Agustus 2020 sampai dengan Desember 2020, menggunakan Rancangan Acak Kelompok (RAK) faktor tunggal dengan 4 perlakuan dan 5 ulangan, sehingga terdapat 20 satuan percobaan. Perlakuan terdiri atas 4 taraf, yaitu tanah/kontrol (B0), tanah – sekam bakar 3:1 (B1), tanah – kompos BSF 3:1 (B2) dan tanah – sekam bakar – kompos BSF (B3). Analisis data penelitian menggunakan uji F, jika ada perbedaan maka dilanjutkan dengan uji BNT taraf 5%, Hasil penelitian menunjukan bahwa perlakuan tanah – sekam bakar 3:1 (B1), perlakuan tanah – kompos BSF 3:1 (B2) dan tanah – sekam bakar – kompos BSF (B3) memberikan pengaruh dalam meningkatkan diameter batang, jumlah cabang dan persentase bunga menjadi buah tanaman lada pada umur 16 minggu setelah tanam.   Kata Kunci : kompos black soldier fly, pertumbuhan, tanaman lada perdu

Several factors that affect production of cocoa (Theobroma cacao L.), one of which is the quality of seedlings. The quality of seedlings is affected by the type of clones and the composition of the planting media. This study aims to obtain the influence of clone types and types of manure, as well as the interaction between clone types and types of manure on the growth of cocoa seedlings. The study was conducted in the field of practices and Laboratory of the State Polytechnic of Lampung, in January to June 2017. The method used was a Randomized Block Design (RBD) factorial pattern consisting of two factors. The first factor is the type of clone consisting of three levels, namely K1 = TSH clone 858, K2 = ICS 60, and K3 = TSH 908. The second factor consists of four levels namely P0 = Control, P1 = Chicken Manure, P2 = Cow Manure , and P3 = Goat Manure. The results showed that the use of TSH 858, ICS 60, and TSH 908 clones had the same effect on all observed variables. However, the use of manure has a significant effect on each variable, but the amount of leaf chlorophyll is relatively the same between clone types and types of manure, there are interactions between clone types and types of manure.

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Gibberellin (GA 3) is a natural growth hormone and synthesis used to break dormancy and accelerate germination and growth processes. The purpose of this study is to determine the effect of gibberellin concentration (GA 3), soaking duration, and the interaction between gibberellin concentration (GA3) and soaking duration on the growth of australian pine tree seed. The research was conducted in State Polytechnic of Lampung from October 2015 to February 2016. This research used Factorial Randomized Block Design (RBD). The first factor is the concentration of gibberellin (GA 3) namely A 0 (without GA 3), A 1 (1000 mg.l-1 GA 3), A 2 (1250 mg.l-1 GA 3), and A 3 (1500 mg.l-1 GA 3). The second factor is the soaking duration of GA 3 namely B 1 (soaking for 3 hours), B 2 (soaking for 6 hours), and B 3 (soaking for 9 hours). The result showed that GA 3 at concentration 1500 mg.l-1 increased germination, the percentage of germinated seeds, hypocotyl diameter, hypocotyl length, growth homogenity, and vigor of australian pine tree seed. Soaking duration for 9 hours can increase germination, the percentage of germinated seeds, hypocotyl diameter, hypocotyl length, growth homogeneity, and australian pine tree seed vigor. The interaction between GA 3 concentration at 1500 mg.l-1 and the soaking duration for 9 hours increased the germination, the percentage of germinated seeds, hypocotyl diameter, hypocotyl length, growth homogeneity, and australian pine tree seed vigor.