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All Journal Jurnal Pertanian Agros Agrisintech (Journal of Agribusiness and Agrotechnology) Agroista: Jurnal Agroteknologi
Rusmarini, Umi Kusumastuti
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Pengaruh Pupuk Kandang Ayam dan Pupuk P terhadap Pertumbuhan dan Hasil Kubis Bunga (Brassica oleracea L. var. botrytis) Tarigan, Shonry Roy KH Malem; Rusmarini, Umi Kusumastuti; Setyorini, Titin
AGROISTA : Jurnal Agroteknologi Vol. 8 No. 1 (2024): MEI
Publisher : Program Studi Agroteknologi INSTIPER

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55180/agi.v8i1.763

Abstract

The aims of this research was to determine the impact of chicken manure and P fertilizer on the development and production of cauliflower. This research was done from February to April 2023 in Pakis, Magelang This study used a completely randomized design (CRD) which includes 2 factors. Factor A uses chicken manure with a measurement of 3 types, such as 200 g, 400 g, 600 g. Factor B uses P fertilizer with a dose of 3 types, such as 20 g, 30 g, 40 g. Each treatment combination was repeated 3 times. The research data using a real level analysis of 5%. If there is a significant difference in the treatment, it will be held using the Duncan Multiple Range Test. The results of the study explained that there was an interaction in the dose of chicken manure with P fertilizer on the parameters of flower circle. The best treatment combination for flower circle parameters was 400g of chicken manure and 40g of P fertilizer. The application of chicken manure with doses of 200g, 400g, and 600g produced a similar effect on the development and production of cauliflower. The application of P fertilizer at a doses of 20g, 30g, 40g have produced the same a similar effect on the growth and yield of cauliflower.
Uji Efektivitas Beberapa Dosis Triklopir dan Polyoxyethylene Alky Ether terhadap Pengendalian Gulma Solanum torvum Prayitno, Sebastiyan; Mawandha, Hangger Gahara; Rusmarini, Umi Kusumastuti
AGROISTA : Jurnal Agroteknologi Vol. 8 No. 2 (2024): NOVEMBER
Publisher : Program Studi Agroteknologi INSTIPER

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55180/agi.v8i2.1436

Abstract

Weeds are unwanted plants because they are detrimental to the absorption of nutrients, water, carbon dioxide, light, and growing space. Chemical weed control is an effective method in large areas of oil palm plantations because it uses less labor and time. The purpose of this study was to determine the effectiveness of triclopyr herbicide and polyoxyethylene alky ether adjuvant in controlling Solanum torvum weeds. The research location was Sawita Estate plantation, South Kalimantan. This study used non-factorial experiments arranged in RAK, using several doses of triclopyr herbicide and polyoxyethylene alky ether adjuvant. This study consisted of one factor with 5 treatments, namely control (no treatment), Triclopyr 3.3 ml/l water + polyoxyethylene alkyl ether 0.7 ml/l water, Triclopyr 4.2 ml/l water + polyoxyethylene alkyl ether 0.9 ml/l water, Triclopyr 5 ml/l water + polyoxyethylene alkyl ether 1.1 ml/l water, and Triclopyr 5.8 ml/l water + polyoxyethylene alkyl ether 1.3 ml/l water. Each treatment was repeated four times. Observation of the toxicity level of weeds to herbicides was done visually with scoring based on the European Weed Research Society (EWRS). Scoring data were analyzed by ANOVA (Analysis of Variance) with a real level of 5%, and if there is a significant effect, it is continued with Duncan's Multiple Range Test (DMRT) at the 5% level. In the treatment of herbicide triklopir (5 ml/water + polyoxyethylene alkyl ether), 1.1 ml/water is effective in controlling Solanum torvum weeds; this is indicated by the results of scoring with increasingly smaller numbers, which means all weeds die. The cost used in the treatment of triclopyr (5 ml/water + polyoxyethylene alkyl ether) 1.1 ml/water is an efficient treatment compared to other treatments in controlling Solanum torvum weeds.
Efektivitas Serapan Unsur Hara Nitrogen pada Pembibitan Tanaman Tebu (Saccharum officinarum L.) Pogon, Trinita Yunita; Putra, Dian Pratama; Rusmarini, Umi Kusumastuti
Agrisintech (Journal of Agribusiness and Agrotechnology) Vol 4 No 2 (2023): Oktober
Publisher : Universitas Nusa Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31938/agrisintech.v4i2.545

Abstract

Pemberian unsur nitrogen sangat penting untuk meningkatkan pertumbuhan dan hasil rendemen tanaman tebu. Untuk mengetahui waktu yang tepat agar dapat melakukan pemupukan, maka diperlukan kurva serapan tanaman selama masa pertumbuhan tanaman tersebut. Penelitian ini bertujuan untuk mengetahui efektivitas, penyerapan, dan hubungan serapan unsur hara nitrogen terhadap pertumbuhan bibit tanaman tebu. Percobaan dilakukan di Lahan KP 2 INSTIPER Yogyakarta Desa Wedomartani, Depok, Sleman, Yogyakarta pada bulan Mei 2022 – Juli 2022. Penelitian ini menggunakan metode rancangan faktorial satu faktor yang disusun dalam Rancangan Acak Lengkap (RAL). Faktor yang diuji adalah umur bibit tebu yang terbagi menjadi umur 8 minggu hingga 12 minggu dengan 3 kali ulangan. Media tanam yang digunakan dalam percobaan adalah tanah Latosol yang diberikan pupuk urea 14 g pada umur 9 minggu. Data diperoleh dari hasil pengamatan langsung dan uji laboratorium. Data yang diperoleh dari hasil penelitian dianalisis dengan menggunakan sidik ragam, perlakuan yang berpengaruh nyata diuji lanjut menggunakan uji duncan (DMRT) pada jenjang nyata 5%. Hasil penelitian menunjukkan terdapat pengaruh nyata antara lama waktu serapan hara nitrogen terhadap parameter pH tanah. Serapan unsur hara nitrogen meningkat seiring dengan penurunan pH tanah jika dibandingkan sebelum penambahan pupuk urea. Nitrogen providing is very important to increase the growth and yield of sugar cane plants. To find out the right time to fertilize, a plant uptake curve is needed during the plant's growth period. This research aims to determine the effectiveness, absorption and relationship between nitrogen nutrient absorption and the growth of sugarcane seedlings. The experiment was carried out on the KP 2 INSTIPER Yogyakarta Farm, Wedomartani Village, Depok, Sleman, Yogyakarta in May 2022 – July 2022. This research used a one-factor factorial design method arranged in a Completely Randomized Design (RAL). The factor tested was the age of the sugarcane seedlings which was divided into ages 8 weeks to 12 weeks with 3 repetitions. The planting medium used in the experiment was Latosol soil which was given 14 g urea fertilizer at 9 weeks of age. Data was obtained from direct observations and laboratory tests. Data obtained from the research results were analyzed using variance, treatments that had a significant effect were further tested using the Duncan test (DMRT) at a real level of 5%. The results of the research show that there is a real influence between the length of time for nitrogen nutrient uptake on soil pH parameters. Nitrogen nutrient uptake increased along with decreasing soil pH when compared to before the addition of urea fertilizer.
PENGARUH DOSIS PGPR DAN LCPKS TERHADAP PERTUMBUHAN BIBIT KELAPA SAWIT DI PEMBIBITAN AWAL Kristalisasi, Elisabeth Nanik; Rusmarini, Umi Kusumastuti; Perwana, Rifaldi Gravian
Agros Journal of Agriculture Science Vol 24, No 2 (2022): edisi Juli
Publisher : Fakultas Pertanian, Universitas Janabadra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37159/jpa.v24i2.1949

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh dosis PGPR dan LCPKS terhadap pertumbuhan bibit kelapa sawit di pembibitan awal. Penelitian dilakukan di PT. Perkebunan Nusantara III yang terletak di desa Sei Meranti, Kecamatan Torgamba, Kabupaten Labuhan Batu Selatan, Sumatera Utara, pada bulan Juni sampai September 2021. Rancangan percobaan yang digunakan adalah Rancangan Acak Lengkap (RAL) yang terdiri dari dua faktor. Faktor pertama adalah dosis PGPR terdiri dari 3 aras (30, 40, dan 50 ml/bibit). Faktor kedua adalah dosis LCPKS terdiri dari 4 aras (0/kontrol, 30, 40, dan 50 ml/bibit).  Hasil penelitian menunjukkan ada interaksi nyata antara aplikasi dosis PGPR dan LCPKS terhadap tinggi bibit, diameter batang, bobot kering akar, bobot segar tajuk, bobot kering tajuk, volume akar, bobot kering tanaman, dan bobot segar tanaman kelapa sawit di pembibitan awal. Kombinasi perlakuan terbaik adalah PGPR 50 ml/bibit dengan LCPKS 50 ml/bibit. Dosis PGPR maupun LCPKS memberikan pengaruh  sama terhadap parameter panjang akar serta bobot segar akar.
Pengaruh Intensitas Penyinaran dan Frekuensi Penyiraman terhadap Pertumbuhan Bibit Kelapa Sawit di Pre Nursery Wandani, Beno; Rusmarini, Umi Kusumastuti; Yuniasih, Betti
AGROISTA : Jurnal Agroteknologi Vol. 9 No. 1 (2025): MEI
Publisher : Program Studi Agroteknologi INSTIPER

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55180/agi.v9i1.1679

Abstract

Oil palm nursery is generally conducted through a two-stage system, namely the pre-nursery stage and the main nursery stage. In the pre-nursery stage, seedlings require watering of 0.1–0.3 liters per day with a watering frequency of twice daily, in the morning and evening. Meanwhile, shading serves to protect against high sunlight intensity. This study aims to investigate the effect of light intensity and watering frequency on the growth of oil palm seedlings in the pre-nursery stage. The study was conducted from June 2024 to September 2024. It employed a factorial experiment method arranged in a split-plot design with two factors. The first factor (main plot) was light intensity, consisting of three levels: 3,500, 2,000, and 1,000 foot candles. The second factor (subplot) was watering frequency, consisting of three levels: twice a day, once a day, and once every two days with a water volume of 200 ml/day. Each treatment was replicated four times. Data were analyzed using analysis of variance (ANOVA), and if significant differences were found, the Duncan Multiple Range Test (DMRT) was applied. The ANOVA results showed a significant interaction between light intensity and watering frequency on the growth of oil palm seedlings in the pre-nursery stage, specifically in the parameter of seedling fresh weight. Light intensities of 1,000 and 2,000 foot candles resulted in taller seedlings compared to 3,500 foot candles, while a light intensity of 3,500 foot candles influenced root growth. Watering frequencies of twice a day and once a day showed better seedling growth compared to watering once every two days.
Co-Authors Elisabeth Nanik Kristalisasi Mawandha, Hangger Gahara Perwana, Rifaldi Gravian Pogon, Trinita Yunita Prayitno, Sebastiyan Putra, Dian Pratama Tarigan, Shonry Roy KH Malem Titin Setyorini, Titin Wandani, Beno Yuniasih, Betti