The sustainability of cocoa production in Indonesia is faced with the problem of the cocoa pod borer (Theobroma cacao L.). In an effort to control the main pests on cocoa plants, various techniques can be used, namely control with the use of natural insecticides and control by technical culture in the form of pruning. Natural insecticide is an insecticide whose basic ingredients come from plants that are easilybiodegradablein nature, so they do not pollute the environment and are relatively safe for humans and livestock, because the residue is easily lost. Pruning is the act of removing part of the plant organs in the form of branches, twigs and leaves with the aim of obtaining good cocoa plant branches, regulating the distribution of production branches and leaves so that they are evenly distributed, removing unwanted plant parts, stimulating the plants to grow. form new organs, reduce the risk of pest and disease attacks, and increase the ability of plants to form fruit. The purpose of this study was to determine the response of the application of botanical insecticides and pruning to the control of the cocoa pod borer (Theobroma cacao L.). The experimental design used a non-factorial randomized block design consisting of 7 treatments. The treatment of vegetable insecticides consisted of 4 levels, namely I0 (Without insecticide = Control), I1 (vegetable insecticide made from srikaya seeds at a dose of 250 ml/liter of water), I2 (vegetable insecticide made from tuba root with a dose of 250 ml/liter water), I3 (vegetable insecticide made from tobacco leaves at a dose of 250 ml/liter of water). The pruning treatment consisted of 3 levels, namely I4 (Without Pruning (Control), I5 (Pruning Interval 7 days after the study) and I6 (Pruning Interval 14 days after the study). Observations consisted of attack intensity, level of damage caused by PBK attack, attack index and production Control of the cocoa pod borer by pruning and botanical insecticides on cocoa plants showed a significant effect on the parameters of attack intensity and level of damage at the age of 6 weeks, and the attack index at the age of 12 weeks. 2 msp, 4 msp, 8 msp, 10 msp, 12 msp, and the parameters of the level of damage at the age of 2 msp, 4 msp, 8 msp, 10 msp, 12 msp and the plant production parameters at the age of 12 msp showed no significant effect.

Tujuan dari penelitian ini adalah untuk mengetahui pertumbuhan dan produksi Padi sawah varietas mekongga yang disebabkan oleh pengaruh olah tanah dan pemberian Pupuk N berdasarkan bagan warna daun. Di desa singali, Kecamatan Padangsidimpuan hutaim baru, Kota Padangsidimpuan. Dengan menggunakan Rancangan Spil Plot Desain dan tiga ulangan, parameter yang diamati dalam penelitian ini Pengukuran Warna Daun Padi Dengan BWD, Tinggi Tanaman, Jumlah Anakan, Umur Keluar Malai, Jumlah Malai, Jumlah Gabah Hampa Per Malai, Jumlah Gabah Isi Per Malai, Berat Gabah Per Seribu Butir, Produksi Per Plot.  Pengukuran warna daun padi dengan BWD dimulai pada 21-28 hari setelah tanam (HST) kemudian secara berkala diulang setiap 7 -10 hari sekali sampai diketahui nilai kritis saat pupuk N harus diaplikasikan, sampai tanaman dalam kondisi bunting atau fase primodia. cara ini berlaku varietas unggul biasa. Khusus untuk padi hibrida dan pada tipe baru, pengukuran tingkat kehijauan daun tanaman dilakukan sampai tanaman sudah berbunga 10 %. Menurut hasil analisis sidik ragam pengamatan terhadap pengukuran warna daun Padi varietas mekongga dengan perlakuan olah tanah menunjukkan pengaruh tidak nyata pada umur 21 hst, dan umur 35 hst, Sedangkan pada perlakuan pemberian pupuk N menunjukkan pengaruh yang tidak nyata. Begitu juga pada interaksi kedua perlakuan tersebut menunjukkan pengaruh nyata.

Penelitian ini bertujuan untuk mengetahui pengaruh Abu Janjang Kelapa Sawit dan Pupuk Organik Jago Tani terhadap Pertumbuhan Vegetatif Karet Okulasi (havea brassiliensis). Penelitian ini dilaksanakan di lokasi Kelurahan Batang Ayuni Julu, Kecamatan Padangsidimpuan Utara, Kabupaten Tapanuli Selatan, Ketinggian tempat 500 meter dari permukaan laut. Waktu penelitian dilaksanakan bulan Februari 2017 dan Penelitian selesai pada bulan Juli 2017.Penelitian ini dilakukan dengan menggunakan rancangan Acak Kelompok (RAK) dalam bentuk faktorial, yaitu 2 faktor , faktor pemberian Abu Janjang Kelapa Sawit disimbolkan (A), dengan 4 level yaitu A0,  A1, A2, dan A3 dan Pupuk Organik Jago Tani disimbolkan (J), dengan 4 level yaitu J0,  J1, J2, dan J3.Dari hasil analisis secara statistik diperoleh bahwa perlakuan Abu Janjang Kelapa Sawit memberikan respon yang nyata pada pengamatan tinggi tanaman umur 4 mst, 8 mst,  dan 12 mst. Sedangkan respon yang tidak nyata dijumpai pada pengamatan diameter batang umur 4 mst, 8 mst, dan 12 mst, pengamatan jumlah tangkai umur  4 mst, 8 mst, dan 12 mst, pengamatan luas daun pada umur 6 mst, dan 12 mst. Dari hasil analisis statistik diperoleh bahwa pemberian Pupuk Organik Jago Tani memberikan respon yang tidak nyata pada pengamatan tinggi tanaman 4 mst, 8 mst, dan 12 mst, pengamatan diameter batang umur 4 mst, 8 mst, dan 12 mst, pengamatan jumlah tangkai umur  4 mst, 8 mst, dan 12 mst, pengamatan luas daun pada umur 6 mst, dan 12 mst. Penelitian ini menggunakan Abu Janjang Kelapa Sawit  pada pengamatan nilai tertinggi pada perlakuan A2 ( 50 gr). Pada pengamatan Jago Tani nilai tertinggi pada perlakuan J2 (4 cc/liter air). Kata Kunci : Abu janjang kelapa sawit, pupuk organik Jago Tani,

The purpose of this research is to find out to determine the test of several varieties and the application of vegetable pesticides for clove leaves for Eradicating Leaf worms on Corn Plants (Zea mays L). From the results of statistical data analysis, the treatment of several varieties showed no significant effect on the parameters of plant height 3, 5, and 9 weeks after planting,  diameter 3 and 5 weeks after planting, ear weight per sample, and ear weight per plot, but had no significant effect on the parameters. Plant height at 7 weeks after planting, stem dimensions 7 and 9 weeks after planting, and intensity of leaf caterpillar pests at 3, 5, 7, and 9 weeks after planting. From the results of statistical data analysis, clove leaf vegetable pesticide treatment showed a significant effect on the parameters of plant height at 5 weeks after planting, stem diameter 3, 5, 7, and 9 weeks after planting, but had no significant effect on plant height parameters aged 3, 7 and 9 weeks after planting, ear weight per sample, ear weight per plot and intensity of attack of leaf worm pests aged 3, 5, 7 and 9 weeks after planting. From the results of statistical data analysis, the interaction between the two treatments above shows an insignificant effect on all observed parameters.