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PENGARUH KONSENTRASI DAN CARA APLIKASI IBA (INDOLE BUTIRIC ACID) TERHADAP PERTUMBUHAN BIBIT NANAS (ANANAS COMOSUS [L.] MERR.) ASAL TUNAS MAHKOTA Rugayah, Rugayah; Anggalia, Itha; Ginting, Yohannes Cahya
JURNAL AGROTROPIKA Vol 17, No 1 (2012): Agrotropika Vol.17 No.1 2012
Publisher : JURNAL AGROTROPIKA

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The research was conducted to determine the effects of IBA concentration on the growth of pineapple seedlings sprout from crown cutting on each applications method. The treatment was arranged in factorial (5x2) in ran-domized block design with three replications. The first factor is the concentration of IBA (0 ppm,100 ppm,200 ppm,400 ppm and 600 ppm). The second factor is the application method of IBA (spraying method and basting method). The results showed that the concentration of 400 ppm IBA effect on leaf width, plant wet weight, and number of primary roots. Treatment of IBA application by basting method of the primary root number more than spraying method. The interaction between concentration and applications method of IBA had no effect on all observed variabels. This study were obtained that the concentration of IBA 400 ppm gives the best growth, Treatment of IBA application by basting method to increase the number of primary roots, but the influence concentration of IBA on the growth of seedlings of pineapple seedling from crown cutting is not determined by applications method of IBA. Key words: Pineapple Seedling, Crown Cutting, IBA

Pengaruh frekuensi pemupukan setelah forcing terhadap produktivitas buah tanaman nanas (Ananas comosis [L.] Merr.) Azizah, Nur; Widyastuti, R. A. Diana; Karyanto, Agus; Ginting, Yohannes Cahya
JURNAL AGROTROPIKA Vol 22, No 2 (2023): Jurnal Agrotropika Vol 22 No 2, Oktober 2023
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v22i2.7697

Pineapple (Ananas comosus [L.] Merr) is one of the potential horticultural commodities and is a mainstay of exports in Indonesia. Pineapple fruit productivity can be increased through the fertilization process. One of the fertilization processes in pineapple plants is fertilization after forcing. The nutrients needed by pineapple plants after forcing are nitrogen and potassium which can support plant growth and increase pineapple fruit production. The purpose of this study was to determine the effect of the frequency of fertilization after forcing and to find out which treatment had the highest productivity. The research was conducted from October 2022 to April 2023 at the Central Lampung Pineapple Plantation, Lampung Province. This study used a single factor randomized block design (RBD), namely the frequency of fertilization on the day after forcing (HSF). The treatment consisted of four levels, namely twice fertilization given at 20 and 55 HSF (P1), two times fertilization given at 15 and 30 HSF (P2), three times fertilization given at 15, 30, 45 HSF (P3) and four times of fertilization given at 15, 30, 45, 60 HSF (P4). Each fertilization application uses Urea 50 kg/ha and K2SO4 75 kg/ha. Each treatment was repeated four times to obtain 16 experimental units. The results showed that the frequency of fertilization after forcing had an effect on the weight of 12 eyed fruit, the length of 11 and 12 eyed fruit, the diameter of 12 eyed fruit, and the weight of 12 eyed crowns in pineapple plants. The fertilization that was able to produce the best pineapple fruit productivity was fertilization with twice the frequency at 15 HSF and 30 HSF which produced the highest production potential compared to the control treatment with a difference of 2.51%.Keywords : pineapple, fertilization, HSF (Days After Forcing)

PENGARUH PENGURANGAN INTENSITAS RADIASI MATAHARI TERHADAP PERTUMBUHAN DAN KUALITAS SELADA ROMAINE(Lactuca sativa var. Longifolia) Hutagalung, Fransio; Timotiwu, Paul B; Ginting, Yohannes Cahya; Manik, Tumiar Katarina B
Jurnal Agrotek Tropika Vol 9, No 3 (2021): JURNAL AGROTEK TROPIKA VOL 9, SEPTEMBER 2021
Publisher : Departement of Agrotechnology, Agriculture Faculty, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jat.v9i3.5311

Budidaya selada romaine di dataran rendah akan menghadapi kendala yaitu intensitas radiasi matahari dan suhu udara yang tinggi yang dapat menurunkan pertumbuhan dan kualitas tanaman.Salah satu usaha yang dapat dilakukan untuk mengatasi hal ini adalah dengan mengurangi intensitas radiasi matahari menggunakan naungan. Penelitian ini bertujuan untuk mengetahui pengaruh penggunaan naungan plastic penyaring UV dalam mengurangi intensitas radiasi matahari dan pengaruhnya terhadap suhu dan kelembaban udara juga untuk mengetahui pertumbuhan dan kualitas selada romaine di dalam naunganplastik UV 14% sebagai suatu alternative pengembangan selada di dataran rendah. Penelitian dilaksanakan di Desa Gulak Galik, Kecamatan Teluk Betung, Bandar Lampung dengan perlakuan tanpa naungan dan perlakuan penggunaan naungan plastik penyaring UV 14%, masing-masing perlakuan memiliki 30 sampel. Data intensitas radiasi matahari, suhu udara, dan kelembaban udara ditampilkan dalam bentuk grafik sedangkan data pertumbuhan dan hasil tanaman diuji menggunakan analisis Uji-t taraf α 5%. Hasil penelitian menunjukkan bahwa plastik UV yang digunakan efektif menurunkan intensitas radiasi matahari, namun tidak secara signifikan merubah suhu udara dan kelembaban udara. Rata-rata naungan plastik penyaring UV yang digunakan menurunkan intensitas radiasi matahari dari 602 Watts.mˉ² menjadi 421 Watts.mˉ² (43%), rata-rata suhu udara siang hari di dalam dan di luar naungan yaitu sekitar 36˚C, dan kelembaban udara siang haridi dalam dan di luar naungan yaitu 58% dan 54%. Penggunaan naungan plastik menghasilkan menghasilkan panjang batang yang lebih tinggi, namun untuk bobot segar tanaman, jumlah daun, lebar daun dan bobot kering akar yang lebih rendah dari pada tanaman dengan perlakuan tanpa naungan, sedangkan untuk panjang daun anatara kedua perlakuan tidak menghasilkan pengaruh yang berbeda nyata. Berdasarkan pengamatan kualitas selada romaine yang berada di dalam naungan menghasilkan warna, rasa, serta kerenyahan daun yang lebih baik daripada tanaman yang berada di luar naungan, namun untuk tampilan kanopi kepadatan tanaman lebih baik pada tanaman yang berada di luar naungan.

Pengaruh Bahan Pelleting terhadap Perkecambahan Benih Bawang Merah (Allium cepa L.) Rajagukguk, Sion G.; Agustiansyah, Agustiansyah; Manik, Tumiar K.; Ginting, Yohannes Cahya
JURNAL AGROTROPIKA Vol. 22 No. 1 (2023): Jurnal Agrotropika Vol 22 No 1, Mei 2023
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v22i1.7105

Shallot is an important commodity, but their productivity in Indonesia is still low. TSS can be used because of its higher production, longer shelf life, more resistance to disease pathogens, cheaper procurement and distribution costs, guaranteed seed quality, and high productivity potential, but has a small shape so it is difficult to plant so seed coating technology is needed. Seed pellets are coatings of seeds to change the shape, size and weight of seeds. This study aims to determine the effect of pelleting techniques on shallot seeds. This research was conducted with one treatment factor, namely without pelleting, soil + CMC, soil + CMC + Mycorrhizae, soil + CMC + Trichoderma, soil + CMC + Dolomite, soil + CMC + humic acid, soil + AG, soil + AG+ Mycorrhizae, soil +AG+Trichoderma, soil+AG+Dolomite, soil+AG+Humic acid. Each treatment was carried out with 3 replications so that 33 experimental units were obtained, with one experimental unit in the form of a planting media tray with 25 seeds each. The results of the study explained that the pelleting technique had no effect on germination, root length, coleoptile length, wet safe weight, dry safe weight, seed weight and had a significant effect on the emergence of plumules with the best treatment obtained in the soil. CMC + humic acid and seed pellet weight. stated that seed pellets can change the weight, size and shape of seeds so as to facilitate planting. The conclusion of this study is that shallot seed pelleting can be applied to shallot cultivation because it does not inhibit the growth and development of shallots and can facilitate the planting of shallot seeds. Key words: Shallot, seed, pelleting, TSS

Optimasi Konsentrasi Paklobutrazol untuk Respons Pembungaan Tanaman Jambu Biji 'Kristal' Yutamimah, Siti Sarah; Widyatuti, R. A. Diana; Utomo, Setyo Dwi; Ginting, Yohannes Cahya
JURNAL AGROTROPIKA Vol. 22 No. 1 (2023): Jurnal Agrotropika Vol 22 No 1, Mei 2023
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v22i1.7449

The advantages of 'Crystal' guava in Indonesia provide opportunities for farmers to cultivate and increase their production. Various methods of cultivation have been developed to increase the production of 'Crystal' guava, one of which is the use of Growth Regulators. Paclobutrazol is a plant PGR that regulates flowering outside the harvest season so that the production of 'Crystal' guava fruit can be maintained. The purpose of this study was to determine the best concentration of the effect of Paclobutrazol treatment in increasing the flowering of 'Crystal' guava plants. The research was conducted from August 2021 to March 2022 in Rajabasa Lama 1 Village, Labuhan Ratu District, East Lampung Regency. The treatment was carried out in a factorial manner using a single factor randomized block design with three replications so that 36 experimental units were obtained. The first factor was Paclobutrazol (A) which consisted of 6 treatment levels, there are A1 (0 ppm), A2 (4000 ppm), A3 (6000 ppm), A4 (8000 ppm), A5 (10,000 ppm), A6 (12,000 ppm). Paclobutrazol treatment with a concentration of 10,000 ppm gave the best results on the variables of flower number, number of ovules, number of harvested fruit and weight of harvested fruit. Keywords : Paclobutrazol, Concentration, ‘Crystal’ Guava Plants

Pengaruh frekuensi pemupukan setelah forcing terhadap produktivitas buah tanaman nanas (Ananas comosis [L.] Merr.) Azizah, Nur; Widyastuti, R. A. Diana; Karyanto, Agus; Ginting, Yohannes Cahya
JURNAL AGROTROPIKA Vol. 22 No. 2 (2023): Jurnal Agrotropika Vol 22 No 2, Oktober 2023
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v22i2.7697

Pineapple (Ananas comosus [L.] Merr) is one of the potential horticultural commodities and is a mainstay of exports in Indonesia. Pineapple fruit productivity can be increased through the fertilization process. One of the fertilization processes in pineapple plants is fertilization after forcing. The nutrients needed by pineapple plants after forcing are nitrogen and potassium which can support plant growth and increase pineapple fruit production. The purpose of this study was to determine the effect of the frequency of fertilization after forcing and to find out which treatment had the highest productivity. The research was conducted from October 2022 to April 2023 at the Central Lampung Pineapple Plantation, Lampung Province. This study used a single factor randomized block design (RBD), namely the frequency of fertilization on the day after forcing (HSF). The treatment consisted of four levels, namely twice fertilization given at 20 and 55 HSF (P1), two times fertilization given at 15 and 30 HSF (P2), three times fertilization given at 15, 30, 45 HSF (P3) and four times of fertilization given at 15, 30, 45, 60 HSF (P4). Each fertilization application uses Urea 50 kg/ha and K2SO4 75 kg/ha. Each treatment was repeated four times to obtain 16 experimental units. The results showed that the frequency of fertilization after forcing had an effect on the weight of 12 eyed fruit, the length of 11 and 12 eyed fruit, the diameter of 12 eyed fruit, and the weight of 12 eyed crowns in pineapple plants. The fertilization that was able to produce the best pineapple fruit productivity was fertilization with twice the frequency at 15 HSF and 30 HSF which produced the highest production potential compared to the control treatment with a difference of 2.51%.Keywords : pineapple, fertilization, HSF (Days After Forcing)

Produksi Benih dan Polong Segar Buncis (Phaseolus vulgaris L.) yang Dipanen dari Pertanaman Tumpangsari dengan Sorgum (Sorghum bicolor [L.] Moench) dan Monokultur Pramono, Eko; Kurnianti, Vidia Dwi; Utomo, Setyo Dwi; Ginting, Yohannes Cahya
JURNAL AGROTROPIKA Vol. 22 No. 2 (2023): Jurnal Agrotropika Vol 22 No 2, Oktober 2023
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ja.v22i2.7812

Bean (Phaseolus vulgaris L.) is generally cultivated in monoculture (sole cropping) by farmers in the highlands as main crops. Increasing land use efficiency (LUE) by inter-cropping sorghum on bean requires certain cultivation techniques so as not reducing the production of seeds or fresh fruit bean. This experiment aimed at determine 1) the yields of seeds and fresh pods harvested from the bean-sorghum intercropping compared to those from the sole cropping and 2) the LUE of the bean-sorghum intercropping. The research, which was conducted during April-September 2021 in Sekincau District, West Lampung Regency, Lampung Province, Indonesia used dwarf beans Balitsa-2 variety and climbing bean Horti-3 variety, each of which to be intercropped with sorghum of Numbu variety. Five levels of cropping system treatment were arranged in a Completely Randomized Block Design (CRBD) with six groups as six replications. The results showed that there was no difference the seeds yield and fresh pods of bean between those harvested from bean-sorghum intercropping and from monocultures. The seed yield harvested from the dwarf bean-sorghum intercropping was higher, whereas those harvested from the climbing bean-sorghum intercropping was lower, respectively, compared to those harvested from the monoculture. In producing fresh pods, intercroppings of dwarf bean-sorghum and climbing bean-sorghum increased the LUE, respectively. Whereas in producing seeds, the dwarf bean-sorghum intercropping increased the LUE, but the climbing bean-sorghum intercropping decreased the LUE. Key words : bean, fresh pods, intercropping, seeds, sorghum

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