<p>Produktivitas usahatani sayuran menghadapi kendala produksi akibat gangguan organisme pengganggu tanaman, hal tersebut dapat diselesaikan melalui praktek pertanian yang baik dan pengendalian hama terpadu. Penelitian ini bertujuan untuk menentukan indikator pengelolaan usahatani tanaman sayuran berkelanjutan dan menganalisis nilai indeks keberlanjutan pengelolaan usahatani berbasis pengendalian hama terpadu. Penelitian dilaksanakan dari bulan Maret sampai Oktober 2015 di Kabupaten Tanggamus, Provinsi Lampung. Metode penelitian menggunakan analisis multi dimensional scaling (MDS), leverage analysis, analisis Monte Carlo dengan teknik rapid appraisal for integrated pest management (Rap IPM) yang hasilnya dinyatakan dalam bentuk nilai indeks dan status keberlanjutan. Hasil analisis menunjukkan bahwa terdapat 60 atribut yang di antaranya terdapat 20 faktor pengungkit atau atribut yang sensitif terhadap nilai indeks dan status keberlanjutan. Indeks keberlanjutan usahatani tanaman sayuran berbasis PHT di Kabupaten Tanggamus termasuk kriteria kurang berkelanjutan, dengan indeks gabungan sebesar 48,13. Indeks keberlanjutan yang paling tinggi adalah dimensi sosial dan ekonomi masing-masing sebesar 60,90 dan 51,39 termasuk kriteria cukup berkelanjutan, sedangkan dimensi ekologi, teknologi, dan kelembagaan masing-masing sebesar 48,54; 38,36; dan 40,61 termasuk kriteria kurang berkelanjutan.</p><p>The yield of vegetable is at risk due to the incidence of pests and pathogens. It was related to good agricultural practices and integrated pest management. The purposes of this research were to identify indicators of sustainable vegetables farm and to analyze index sustainability of vegetable farm based on integrated pest management. The research was conducted from March to October 2015 in Tanggamus District, Lampung Province. This research applied multi dimensional scaling (MDS), leverage analysis, and Monte Carlo analysis by rapid appraisal for integrated pest management (Rap IPM). Research showed that among 60 indicators analyzed there were 20 sensitive indicators that affected sustainability index and status. Sustainability index in Tanggamus District were dimension of social and economy obtained value 60.90 and 51.39, it was categorized as sufficiently sustainable, while sustainability index of ecology, technology, and institution dimensions were 48.54, 38.36, and 40.61 respectively, which were considered as less sustainable.</p>

Vegetation diversity and intensity of plant pests and diseases in two polyculture systems in Tanggamus District. The vegetable crop management cannot be separated from infestation of plant pest and disease which influences the quality and quantity of crop yield. The pest organism development is influenced by agroecosystem. The objective of this research was to analyze vegetation diversity and intensity of pest and disease in Tanggamus District. Methods used in this research were analysis of vegetation diversity based on Shannon index, percentage of pests damage and diseases incidence. The results showed that the vegetation diversity in polyculture of agriculture typology were 11 plant species with diversity index of 0.64; while in polyculture of agroforestry typology there were 11 plant species with diversity index of 0.74 and both of these indices were less than 1 (H' < 1). The percentage of pests damage in the polyculture of agriculture larger than polyculture of agroforestry typology ranging from 7.20% to 81.67% and 3.04% to 26.67% respectively. While the incidence of disease in polyculture of agriculture ranging from 0.65% up to 100% and polyculture of agroforestry typology 0.65% up to 68.00%.Key words: polyculture of agriculture, polyculture of agroforestry, Shannon Index ABSTRAK Keanekaragaman vegetasi dan intensitas hama dan penyakit tanaman sayuran pada dua sistem polikultur di Kabupaten Tanggamus. Pengelolaan tanaman sayuran tidak terlepas dari adanya gangguan oleh organisme pengganggu tanaman yang berdampak terhadap kualitas dan kuantitas produksi sayuran yang dalam perkembangan organisme tersebut dipengaruhi oleh agroekosistem. Tujuan penelitian ini adalah menganalisis keanekaragaman vegetasi tumbuhan dan besarnya serangan hama dan penyakit tanaman pada tanaman sayuran di Kabupaten Tanggamus. Metode penelitian yang digunakan yaitu analisis keanekaragaman vegetasi berdasarkan indek Shannon, persentase serangan hama dan kejadian penyakit. Hasil penelitian menunjukkan keanekaragam vegetasi di tipologi polikultur pertanian tercatat 11 species tumbuhan dengan indek keanekaragaman vegetasi sebesar 0,64; sedangkan pada tipologi polikultur agroforestri tercatat 11 species tumbuhan dengan indek keanekaragaman sebesar sebesar 0,74 yang keduanya lebih kecil dari 1 (H' < 1). Intensitas serangan hama dan kejadian penyakit tanaman pada tipologi polikultur pertanian lebih besar dibandingkan polikultur agroforestri dengan kisaran hama sebesar 7,20% sampai 81,67% berbanding 3,04% sampai 26,67% dan penyakit antara 0,65% sampai 100% berbanding 0,65% sampai 68,00%.