Judul: Effects of Gibberellic Acid (GA3) to Growth, Yield Component, and Yield on Shallot (Allium cepa var. aggregatum) Bima Brebes Variety
Abstrak: Penggunaan ZPT giberelin merupakan faktor pendukung yang memberikan kontribusi dalam peningkatan produktivitas bawang merah. Penelitian ini bertujuan untuk mempelajari pengaruh GA3 pada bawang merah varietas Bima Brebes, dan mendapatkan dosis optimum yang dapat meningkatkan produktivitas. Penelitian ini dilaksanakan pada bulan Maret sampai Mei 2020 di Kabupaten Brebes. Penelitian dilakukan dengan cara foliar spray GA3 dengan 0–2,5 dosis dalam volume semprot 400 L air pada tanaman bawang merah varietas Bima Brebes. Rancangan yang digunakan adalah Rancangan Kelompok Lengkap Teracak faktor tunggal 4 ulangan, terdiri dari 6 perlakuan dosis masing-masing yakni 0; 0,5; 1,0; 1,5; 2,0; dan 2,5 dosis GA3. Hasil penelitian menunjukkan bahwa 0,5–2,0 dosis GA3 secara nyata berhasil meningkatkan tinggi tanaman, bobot 10 umbi, bobot kering per tanaman dan bobot per petak yang memengaruhi dugaan hasil per hektar. Dosis optimum dari hasil analisis regresi menunjukkan pada peubah bobot 10 umbi yakni 1,54 dosis GA3., The use of gibberellin as a growth regulator is a supporting factor that contributes to the productivity of shallots. This research aimed to study the effects of GA3 on Bima Brebes shallots variety, and to get the optimal doses so that it is expected to increase productivity. This research was conducted from March to May 2020 in Brebes Regency. This research used foliar spray of GA3 with 0–2,5 doses in 400 L of water spray volume to Bima Brebes shallots variety. This research used Randomized Complete Block Design in single factor of 4 blocks, consists of 6 doses treatment which 0; 0,5; 1,0; 1,5; 2,0; and 2,5 doses GA3. The results showed that 0,5–2,5 GA3 doses significantly increased plant height, 10 tubers weight, dry plant weight and weight per plot which affected the estimated yield per hectare. The optimum doses from regression analysis results showed on variable of 10 tubers weight is 1,54 GA3 doses.
Keyword: Bima Brebes, foliar spray, GA3, sets, shallots

Judul: Varietal Impact on Growth, Yield, and Water Requirements of Shallot (Allium cepa L. var. aggregatum) in Dryland Cultivation
Abstrak: Bawang merah (Allium cepa L. var. aggregatum) merupakan komoditas hortikultura yang mempunyai prospek pasar yang sangat baik sehingga termasuk ke dalam komoditas unggulan nasional. Penggunaan varietas yang merupakan salah satu cara untuk meningkatkan produktivitas bawang merah. Penelitian ini bertujuan mengetahui pengaruh dari penggunaan empat varietas bawang merah terhadap pertumbuhan, hasil panen, dan kebutuhan air pada tanaman bawang merah yang ditanam di lahan kering. Penelitian dilakukan di Kebun Percobaan Sawah Baru IPB, Dramaga, Bogor, Jawa Barat pada bulan Februari hingga April 2023. Penelitian dilakukan berdasarkan rancangan lengkap kelompok teracak (RKLT) dengan faktor tunggal. Perlakuan dalam penelitian ini adalah diamati adalah 4 varietas bawang varietas yaitu Bima Brebes, Bauji, Tajuk,dan SS Sakato. Hasil penelitian menunjukkan perlakuan varietas berpengaruh sangat nyata terhadap peubah tinggi tanaman pada 2 MST dan 3 MST, jumlah tunas pada 2 MST, 3 MST, 5 MST, dan 6 MST, jumlah daun pada 2 MST dan 4 MST, dan jumlah umbi. Seluruh varietas memberikan hasil yang baik untuk ditanam di lahan kering Bogor. Varietas Bauji merupakan varietas dengan proyeksi produktivitas per hektar tertinggi namun membutuhkan air yang lebih sedikit dari tanam hingga panen dibandingkan varietas Tajuk dan SS Sakato. Jumlah daun berpengaruh terhadap nilai evapotranspirasi, Shallot (Allium cepa L. var. aggregatum) is a horticultural commodity with excellent market prospects, thus being classified as a national superior commodity. The use of varieties is one way to enhance shallot productivity. This research aims to determine the influence of using four varieties of shallots on growth, harvest yield, and water requirements of shallot plants cultivated in dryland. The research was conducted at the Sawah Baru IPB Experimental Garden, Dramaga, Bogor, West Java, from February to April 2023. The research was based on a completely randomized block design with a single factor. The treatments in this study consisted of four observed shallot varieties: Bima Brebes, Bauji, Tajuk, and SS Sakato. The results of the research indicate that the variety treatment significantly influenced the plant height variable at 2 and 3 weeks after planting (WAP), the number of shoots at 2 WAP, 3 WAP, 5 WAP, and 6 WAP, the number of leaves at 2 WAP and 4 WAP, and the number of bulbs. All varieties showed good results for cultivation in dryland in Bogor Regency. The Bauji variety emerged as the most promising in terms of projected productivity per hectare, requiring significantly less water from planting to harvest compared to the Tajuk and SS Sakato varieties. The number of leaves influenced the evapotranspiration value.
Keyword: evapotranspirasi, curah hujan, produktivitas

Judul: Posisi Filogenetik Kura-Kura Carettochelys Insculpta  (Reptillia: Testudinata)
Abstrak: Carettochelys insculpta is an endemic freshwater turtle of southern Papua and northern Australia. Phylogenetic position of this turtle is remain unresolved until now. Most of the research conducted show close relationships of C. insculpta and members of Trionychidae family. However, some of the research show distance between C. insculpta and members of Trionychidae family. This research is conducted to analyze phylogenetic relationship between C. insculpta and other members of Testudinata using 12S rRNA, 16S rRNA, and both gene as markers. DNA samples were obtained from three different organisms of C. insculpta. Two species used as outgroups were Alligator mississippiensis and Iguana iguana. Phylogenetic analysis was carried out using Neighbor-Joining method with Felsenstein 1981 (F81) modeltest. A polytomy tree of Testudinata was produced by using 12S rRNA gene. However, analysis using 16S rRNA and both genes as markers confirmed that C. insculpta was located between the Chelonidae and the Trionychidae family.
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