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Peningkatan Kualitas Fisika Tanah Guna Efisiensi Air Melalui Pengkayaan Media Tanam Dengan Kompos Plus Pada Budidaya Tanaman Jagung Manis Sugiono, Darso; Subardja, Vera O; Sudjana, Briljan
AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian Vol 2 No 2 (2018): AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian
Publisher : Universitas Bangka Belitung

Sifat fisik tanah memegang peranan penting dalam ketersediaan unsur hara dan air bagi tanaman. Tanah kering adalah salah satu tanah marginal yang memiliki potensi untuk digunakan sebagai lahan budidaya Jagung. Penelitian ini dilaksanakan di Rumah Kasa PT. Pupuk Kujang Cikampek. Penelitian diawali dengan pembuatan kompos plus dengan menggunakan limbah media tanam jamur merang yang diperkaya dengan Azotobacter sp dan Pseudomonas sp. Penelitian dirancang dengan menggunakan Rancangan Acak Kelompok Faktorial. Faktor pertama adalah dosis pupuk organik dengan taraf O1 = tanpa kompos plus (0 ton kompos plus ha-1), O2 = 50 % dosis anjuran (10 ton kompos plus ha-1) dan O3 = 100 % dosis anjuran (20 ton kompos plus ha-1). Faktor kedua adalah volume air dengan 4 taraf perlakuan yaituV1 = 25% volume air kapasitas lapang, V2 = 75% volume air kapasitas lapang, V3 = 100% volume airkapasitas lapang dan V4 = 150% volume air kapasitas lapang. Perhitungan kebutuhan air kapasitas lapang akan dilakukan dengan metode gravimetri. Sifat fisika tanah dianalisa dengan mengacu pada metode analisa Balai Besar Litbang Sumberdaya Lahan Pertanian tahun 2006. Hasil penelitian menunjukan penggunaan kompos plus dapat meningatkan kualitas sifat fisik tanah pada kegiatan budidaya tanaman jagung dilahan kering, seperti kadar air, bulk density, porositas tanah. Penggunaan kompos plus mampu mensubtitusi kebutuhan air tanaman Jagung terlihat dengan pertumbuhan dan hasil tanaman Jagung pada kondisi cekaman air namun diberikan kompos plus tetap memberikan performa dan hasil yang baik.

Perbedaan Waktu Inkubasi Pupuk Organik Diperkaya untuk Efisiensi Pemupukan Anorganik N dan P pada Tanaman Kedelai Subardja, Vera Oktavia; Muharam, Muharam; Wagyono, Wagyono
AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian Vol 4 No 1 (2020): AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian
Publisher : Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/agrosainstek.v4i1.44

Fertilization efficiency is an effort to break the chain of inorganic fertilizer use which is increasingly uncontrolled. This study aims to obtain the most appropriate composting time of enriched organic fertilizer to obtain the most optimal crop yield in the context of the efficiency of inorganic fertilizers N and P. The research was carried out in the Soil Fertility Laboratory of the Faculty of Agriculture UNSIKA and the Greenhouse laboratory of PT. Pupuk Kujang Cikampek, held during the dry season of 2017. The research was designed using factorial randomized block design. The first factor was the incubation time of enriched organic fertilizer consisting of 3 levels, namely W1 = 21 days incubation time, W2 = 35 days incubation time and W3 = 49 days incubation time. The second factor is a combination of fertilizing doses consisting of 4 levels, namely P1 = 20 tons of organic fertilizer enriched ha-1 + 100% dose recommended inorganic fertilizer NP, P2 = 20 tons of organic fertilizer enriched ha-1 + 75% dose recommended inorganic NP fertilizer , P3 = 20 tons of organic fertilizer enriched ha-1 + 50% dose recommended inorganic fertilizer NP and P4 = 20 tons of organic fertilizer enriched ha-1 + 25% dose recommended inorganic NP fertilizer. The results showed that the combination of treatment of 21 days after incubation + 25% recommended N and P inorganic fertilizers gave the best results in the total functional microbial population, observed growth and component yields.

Utilization of organic fertilizer to increase paddy growth and productivity using System of Rice Intensification (SRI) method in saline soil V O Subardja; I Anas; R Widyastuti
Journal of Degraded and Mining Lands Management Vol 3, No 2 (2016)
Publisher : Brawijaya University

Soil salinity has negative effect on soil biodiversity as well as microbial activities. Hence, rice growth also effected by salinity. Application of organic fertilizer and adoption of System of Rice Intensification (SRI) cultivation might improve the (biological) soil properties and increase rice yield. The aim of this study was to evaluate the effect of two different rice cultivation methods namely conventional rice cultivation method and System of Rice Intensification (SRI) rice cultivation method and two kinds organic fertilizer on improvement of soil biological properties and rice yield. In this study, a split plot experimental design was applied where rice cultivation method (conventional and SRI) was the main plot and two kinds of organic fertilizer (market waste and rice straw) was the sub plot. The treatments had four replicates. The results showed that SRI cultivation with market waste organic fertilizer could increase soil biological properties (population of microbe, fungi and soil respiration). The same treatment also increased rice growth and production. Combination of SRI and market waste organic fertilizer yielded the highest rice production (7.21 t/ha).

Perbedaan Waktu Inkubasi Pupuk Organik Diperkaya untuk Efisiensi Pemupukan Anorganik N dan P pada Tanaman Kedelai: Perbedaan Waktu Inkubasi Pupuk Organik Diperkaya untuk Efisiensi Pemupukan Anorganik N dan P pada Tanaman Kedelai Vera Oktavia Subardja; Muharam Muharam; Wagyono Wagyono
AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian Vol 4 No 1 (2020): AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian
Publisher : Universitas Bangka Belitung

Fertilization efficiency is an effort to break the chain of inorganic fertilizer use which is increasingly uncontrolled. This study aims to obtain the most appropriate composting time of enriched organic fertilizer to obtain the most optimal crop yield in the context of the efficiency of inorganic fertilizers N and P. The research was carried out in the Soil Fertility Laboratory of the Faculty of Agriculture UNSIKA and the Greenhouse laboratory of PT. Pupuk Kujang Cikampek, held during the dry season of 2017. The research was designed using factorial randomized block design. The first factor was the incubation time of enriched organic fertilizer consisting of 3 levels, namely W1 = 21 days incubation time, W2 = 35 days incubation time and W3 = 49 days incubation time. The second factor is a combination of fertilizing doses consisting of 4 levels, namely P1 = 20 tons of organic fertilizer enriched ha-1 + 100% dose recommended inorganic fertilizer NP, P2 = 20 tons of organic fertilizer enriched ha-1 + 75% dose recommended inorganic NP fertilizer , P3 = 20 tons of organic fertilizer enriched ha-1 + 50% dose recommended inorganic fertilizer NP and P4 = 20 tons of organic fertilizer enriched ha-1 + 25% dose recommended inorganic NP fertilizer. The results showed that the combination of treatment of 21 days after incubation + 25% recommended N and P inorganic fertilizers gave the best results in the total functional microbial population, observed growth and component yields.

Penggunaan Dosis Dekomposer dan Perbedaan Waktu Inkubasi Pada Bokashi Kotoran Walet Terhadap Pertumbuhan dan Hasil Tanaman Sawi Hijau (Brassica Juncea L.) di Tanah Marginal Musahidin Musahidin; Sulistyo Sidik Purnomo; Vera Oktavia Subardja; Fawzy Muhammad B
Jurnal Ilmiah Wahana Pendidikan Vol 8 No 1 (2022): Jurnal Ilmiah Wahana Pendidikan
Publisher : Peneliti.net

The addition of organic matter in marginal soils is important to do in an effort to increase soil fertility so that plants can grow and produce optimal production. The purpose of this study was to obtain a dose of decomposer and length of incubation time in bokashi swallow droppings capable of increasing the growth and yield of green mustard plants (Brassica juncea L.) in marginal soils. This research was conducted at a screenhouse located in Sentiong Village, Rawagempol Wetan Village, Cilamaya Wetan Subdistrict, Karawang Regency, West Java. The method used was an experimental method with a factorial Randomized Block Design (RBD) consisting of two factors. The first factor is the decoposer dose consisting of 2 levels, namely: D1 (0 ml) and D2 (10 ml). The second factor is the length of incubation time consisting of 5 factors: W1 (0 days), W2 (4 days), W3 (8 days), W4 (12 days), and W5 (16 days). The results showed that there was no noticeable influence on the use of decoposer doses and differences in incubation time in bokashi swallow droppings against plant height parameters, number of leaves, fresh weight of plants, and dry weight of plants. However, there is an interaction influence on the parameters of the greenish level of the leaves. Giving of decomposer 10 ml (D2) treatment with an incubation time of 12 days (W4) was the best combination of treatment because it is able to provide the highest values on the height parameters of the plant (D2: 3,83-26,44 cm) and (W4: 3,88-26,67 cm), the number of leaves (D2: 3,87-11,00 leaf strands) and (W4: 3,89-11,11 leaf strands), and fresh weight of the plant (D2: 93,60 grams) and (W4: 102,18 grams).

Konsentrasi P Daun Akibat Infeksi Akar Tanaman Kedelai (Glycine max L Merril) oleh Fungi Arbuskular Mikhoriza (FMA) di Tanah Ultisol Vera Oktavia Subardja
Jurnal Agrotek Indonesia (Indonesian Journal of Agrotech) Vol 1 No 1 (2016): Jurnal Agrotek Indonesia (Indonesian Journal of Agrotech)
Publisher : Faculty of Agriculture University of Singaperbangsa Karawang

Penelitian ini merupakan penelitian tentang pengaruh inokulasi Fungi Mikoriza Arbuskula (FMA) dan pupuk Fosfat terhadap konsentrasi P pada daun dan komponen produksi varietas kedelai Anjasmoro yang ditanam pada tanah Ultisol. Tujuan penelitian ini untuk mendapatkan dosis yang terbaik dari FMA di tanah Ultisol untuk peningkatan konsentrasi P pada daun dan produksi kedelai. Penelitian ini dilakukan di Laboratorium Kimia dan Kesuburan Tanah dan Laboratorium Kimia dan Kesuburan Tanaman Fakultas Pertanian Unpad. Penelitian ini menggunakan rancangan acak kelompok faktorial yang diaplikasikan pada dua faktor yakni FAM dengan tiga tingkat (C1 = 5 g-polybag 1, C2 = 10 g-polybag 1 dan C3 = 15 g-polybag 1) dan pupuk Fosfat (SP36) sebagai faktor kedua dengan tiga tingkat (P0 = tanpa aplikasi pupuk fosfat, P1 = 0,3Â g-polybagÂ 1 dan P2Â = 0,6 g-polybagÂ 1) danÂ direplikasi 3 kali. Hasil penelitian menunjukkan bahwa FAM yang diinokulasi ke Ultisol telah memberikan respon yang signifikan pada konsentrasi P pada daun kedelai. C2P2 (FMA = 10 g polybag-1Â + P = 0,6 g polybag-1) merupakan tingkat optimal dalam penyerapan fosfat ke daun, yakni 0,389%. Infeksi akar paling tinggi ditemukan di FMA 10 gpolybag-1Â tetapi tidak berbeda nyata dengan perlakuan lainnya. Produksi terbaik dari kedelai ditunjukkan oleh perlakuan FMA 10 g polybag-1Â + P 0,6 gpolybag-1.Â Kata kunci: FMA, Infeksi Akar, konsentrasi P, Ultisol, Kedelai

Karakteristik Pertumbuhan dan Hasil Jagung Manis Dilahan Marginal Dengan Dosis Pemupukan N yang Berbeda Vera Subardja
Jurnal Agrotek Indonesia (Indonesian Journal of Agrotech) Vol 2 No 1 (2017): Jurnal Agrotek Indonesia (Indonesian Journal of Agrotech)
Publisher : Faculty of Agriculture University of Singaperbangsa Karawang

Jagung merupakan salah satu jenis tanaman yang sangat respon terhadap pemupukan N. Kekurangankandungan N dapat menyebabkan terhambatnya pertumbuhan dan menurunkan hasil tanaman jagung. Penelitian inibertujuan untuk mengetahui karakteristik pertumbuhan tanaman jagung manis dengan dosis pemupukan N yangberbeda di lahan tadah hujan. Penelitian dilaksanakan di kecamatan Tegal Waru, Karawang pada musim kemaraubulan Mei sampai September 2015. Penelitian disusun menggunakan rancangan acak kelompok yang terdiri darisepuluh perlakuan yaitu A1 = 100% dosis rekomendasi N, A2 = 75% dosis rekomendasi N + 1 ton ha-1 kompos, A3 =75% dosis rekomendasi N + 1.5 ton ha-1 kompos, A4 = 75% dosisi rekomendasi N + 2 ton ha-1 kompos, A5 = 100%dosis rekomendasi N + 1 ton ha-1 kompos, A6 = 100% dosis rekoendasi N + 1.5 ton ha-1kompos, A7 = 100% dosisrekoendasi N + 2 ton ha-1kompos, A8 = 125% dosis rekomendasi N + 1 ton ha-1 kompos, A9 = 125% dosis rekoendasiN + 1.5 ton ha-1 kompos dan A10 = 125% dosis rekomendasi N + 2 ton ha-1 kompos. Hasil penelitian menunjukanbahwa perbedaan kombinasi dosis pemupukan N nyata berpengaruh terhadap karakteristik pertumbuhan pada umur42 hst dan 56 hst dan komponen produksitanaman jagung manis. Penggunaan 125% dosis rekomendasi N + 1.5 tonha-1 kompos memberikan hasil bobot tongkol dengan kelobot paling tinggi yaitu 8.27 kg petak-1.Keywords : pupuk N, kompos, tanah marginal, jagung manis.

Volume dan Interval Pemberian Air pada Tanaman Kubis Bunga (Brassica oleracea. L var botrytis subvar cauliflora DC) di Daerah Dataran Rendah Asmanur Jannah; Andi Masnang; Vera Oktavia Subardja
Jurnal Agrotek Indonesia (Indonesian Journal of Agrotech) Vol 5 No 1 (2020): Jurnal Agrotek Indonesia (Indonesian Journal of Agrotech)
Publisher : Faculty of Agriculture University of Singaperbangsa Karawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33661/jai.v5i1.3543

Penyiraman merupakan faktor terpenting yang berpengaruh besar terhadap pertumbuhan tanaman, sistem air yang digunakan akan berpengaruh terhadap pertumbuhan dan hasil tanaman Tujuan penelitian ini adalah untuk mendapatkan yang terbaik untuk Brassica oleracea, volume air dan waktu aplikasi interval. Penelitian ini dilakukan pada bulan Mei hingga Agustus 2018 di Green House Fakultas Pertanian, Universitas Singaperperbangsa Karawang, Penelitian ini menggunakan rancangan acak faktorial.Faktor pertama adalah volume air dengan 3 level (t1 = 100% volume kapasitas lapangan, t2 = 80 % volume kapasitas lapangan dan t3 = 60% volume kapasitas lapangan) dan faktor kedua adalah waktu aplikasi interval air dengan 2 level (i1 = interval 24 jam dan i2 = interval 12 jam) .Hasil menunjukkan bahwa dalam interval 24 jam dan Volume 100% kapasitas lapang, indeks daun lebar tertinggi, laju pertumbuhan, dan bobot bunga Brassica oleracea dibandingkan dengan kapasitas lapang 80% dan 60%. Dalam interval 12 jam, tanaman memberikan respons yang berbeda untuk semua level tanaman. kapasitas lapangan.Berat tertinggi dalam interval 24 jam adalah 135,05 g dalam kapasitas lapangan 100%, sedangkan, dalam interval 12 jam tertinggi bunga berbobot adalah 125,85 g dalam kapasitas lapangan 80%.Kata kunci: Sistem pengairan, pertumbuhan dan hasil tanaman Brassica oleracea.

Pengaruh Kombinasi Dosis Pupuk Vermikompos dan Pupuk NPK Terhadap Pertumbuhan dan Hasil Tanaman Kubis Bunga (Brassica oleracea var. botrytis L) Amalia Dwi Putri; Wagiono; Vera Oktavia Subardja; Lukman Hakim
Jurnal Agrotek Indonesia (Indonesian Journal of Agrotech) Vol 6 No 1 (2021): Jurnal Agrotek Indonesia (Indonesian Journal of Agrotech)
Publisher : Faculty of Agriculture University of Singaperbangsa Karawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33661/jai.v6i1.4794

This research was conducted at the Balai Pengkajian Teknologi Pertanian (BPTP), South Jakarta. Potential yield of flower cabbage (Brassica oleracea var. Botrytis L.) in Indonesia has decreased, this can be achieved by using a combination of inorganic fertilizers and organic fertilizers to increase the growth and yield of flower cabbage as well as maintain soil health. The purpose of this study was to determine the effect of a combination of vermicompost and NPK fertilizers on the growth and yield of flower cabbage. This study used a single factor randomized block design (RBD) with 12 treatments of combination doses of vermicompost and NPK fertilizers, repeated 3 times. The treatments consisted of a combination of vermicompost fertilizer (160 g, 320 g, 480 g and 640 g) combined with NPK fertilizer (12.8 g, 10.2 g and 7.7 g). The results were analyzed using the F test at the 5% level to determine the best treatment, followed by the Duncan Multiple Range Test (DMRT) at the 5% level. The results showed that the application of vermicompost fertilizer combined with NPK increased plant height, leaf number, and pH, head weight, crop diameter and stover weight. Treatment J with a combination of vermicompost dosage of 640 g and NPK fertilizer 12.8 g obtained the highest yield on the parameters of plant height, number of leaves, weight of head, diameter of crop and weight of cabbage flower stalk. The results achieved from this study were the dosage treatment of vermicompost and NPK fertilizers had a significant effect on the growth and yield of flower cabbage. Keywords: Vermicompost, NPK, Flower Cabbage

Pengaruh Jenis dan Jumlah Sumbu Pada Hidroponik Sistem Wick Terhadap Pertumbuhan dan Hasil Tanaman Selada (Lactuca sativa L.) Varietas Maritima Diyah Ayu Puji Lestari; Muharam Muharam; Vera Oktavia Subardja
JURNAL AGROPLASMA Vol 10, No 1 (2023): JURNAL AGROPLASMA VOLUME 10 NO 1 TAHUN 2023
Publisher : UNIVERSITAS LABUHANBATU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/agroplasma.v10i1.3630

Lettuce is one of the vegetable crops which has good economic value and good market prospects to be cultivated by Indonesian people. We know we had a lot of switched agricultural land that it makes our agricultural land is being decreased. A solution of this problem is usingthe hydroponic technique with wick system inside. The purpose of this research is to determine the effect of te types combination and wick amount of the highest hydroponic wick system, and to obtain the highest growth and yield of Maritima variety green lettuce (Lactuca Sativa L.). A method which used in this research is Randomized Block Design (RAK) Single Factor consisting 9 treatments and 3 replications. Treatment A (Flannel Fabric + 2 Axis), B (Flannel Fabric + 3 Axis),C (Flannel Fabric + 4 Axis), D (Wool Fabric + 2 Axis), E (Wool Fabric + 3 Axis), F (Wool Fabric + 4 Axis),G (Coconut Coir + 2 Axis), H (Coconut Coir + 3 Axis) and I (Coconut Coir + 4 Axis). The impact of treatment being analyzed using the F test at a significant 5% level, to find out the best treatment it was continued with the Duncan Multiple Range Test (DMRT) at a 5% level. The results showed that the type and number of axes significantly affected the growth and development of lettuce (Lactuca Sativa L.). Treatment F (Wool Fabric + 4 Axis) gave the highest yield of plant height at 42 hst was 18.80 cm, number of leaves at 42 hst was 14.53 leaves, leaf area at 42 hst was 154.54 cm2and weight fresh fruit per plant at 42 hst was 137.28 g.Key words: Lettuce, Axis Type, and Number of Axis.

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