Update Artikelilmiah: 4683

IRA TRIANI

NIM

Judul Artikel

Abstrak (Bhs. Indonesia)

Kepadatan populasi tungau Brevipalpus phoenicis dan tungau predator familia Phytoseiidae dari beberapa klon teh di perkebunan Kaligua, Brebes Jawa Tengah telah dipelajari. Penelitian ini menggunakan metode survei dengan teknik pengambilan sampel secara sistematis. Sampel diambil dari empat sudut, samping dan tengah pada setiap lokasi pengambilan sampel dari setiap titik poin, 15 tangkai daun diambil 3 daun terbawah dari tanaman teh. Pengambilan sampel diulang sebanyak 4 kali, dengan interval satu minggu. Sampel diamati di bawah mikroskop, tungau hama dan tungau predator yang ditemukan dihitung per klon dari daun yang diambil. Data pendukung, suhu, kelembaban udara dan curah hujan dicatat. Data yang diperoleh dianalisis menggunakan analisis variansi (ANOVA) model II, dan diuji lanjut menggunakan uji Duncan dengan  tingkat kesalahan 20% dan 10%. Hasil menunjukan bahwa kepadatan populasi jenis tungau hama dan tungau predator sangat dipengaruhi oleh jenis klon (P<0.20). Tungau predator Amblyseius deleoni dan tungau hama B. phoenicis memiliki kepadatan yang lebih tinggi dibandingkan dengan kepadatan populasi tungau predator Phytoseius sp. Faktor lain yang mempengaruhi kepadatan populasi meliputi sudut duduk daun,  luas daun, kerapatan dan panjang trikhoma.

Abtrak (Bhs. Inggris)

The population densities of pest mites Brevipalpus phoenicis and their predatory mites of Phytoseiidae from different tea clones at Kaligua Tea Plantation, Brebes Central Java have been studied. This research used a survey method with a systematic sampling technique. Samples were taken from each of four corners, sides, and the midlle of the designated tea plantation of each location.  From each sampling point, 15 petioles of tea leaves were taken fron each of 3 representing tea plants.  Samplings were repeated 4 times, with an interval of one week. Samples were examined under a stereo microscope and the pest and the predatory mites found were counted per area unit of the tea leaves. Additional data, temperature, air moisture, and humadity were recorded.  The data were calculated using “Model II Analysis of Variance” and Duncan Test with confidence limits of 20% and 10%.  The results showed that the population densities of both pest and predatory mites were significantly influenced by the tea clones where they lived (P<0.20).  The predatory mite Amblyseius deleoni and pest mite Brevipalpus phoenicis have higher density compared to the predator mite population density Phytoseius sp.  Other factors which influenced the population densities were the angle and surface are aof the leaf, the density and length of the trichoma.

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