AGROISTA : Jurnal Agroteknologi

FRONT MATTER VOLUME 8 NOMOR 2 MEI 2024

Alan Handru — 2024-06-21

FRONT MATTER VOLUME 8 NOMOR 2 MEI 2024

Evaluasi Sebaran Rayap Di Perkebunan Kelapa Sawit Pada Jenis Tanah Yang Berbeda

Dandi Sudarmanto — 2024-05-27

Termites are one of the pests in oil palm plantations that can cause physical damage to oil palm plants. This study aims to determine the type and colony of termites in mineral, peat and sandy soils and the effectiveness of their control. This research was conducted at PT. Binasawit Abadipratama located in Danau Seluluk District, Seruyan Regency, Central Kalimantan Province, Tangar Estate from March to April 2023. The research was conducted using a comparative method by comparing termite colonies in mineral soil, peat and with parameters in the form of termite species and the level of attack expressed by scoring, as well as secondary data in the form of termite nest census data in the garden archive to determine the effectiveness of control. The results showed that the largest termite colony was found in mineral soil. Termite species found in all soil types was Macrotermes gilvus, and no indication of termite infestation in oil palm trees. Based on the census data for the past three years, it can be concluded that the control that has been carried out is effective in reducing the termite colony from year to year.

Hubungan antara Respirasi Tanah dengan Sifat Tanah Dibawah Kondisi Tegakan Vegetasi yang Berbeda di Ungaran, Jawa Tengah

Galang Indra Jaya — 2024-05-27

Soil respiration is an indicator of the level of soil health in both closed systems (forests) and open systems (agriculture). Conversion of land from natural forest to agricultural cultivation needs attention in the field of sustainability, this is done so that the land can continue to be productive. This research aims to obtain information regarding the relationship between respiration and soil properties in land cover of oil palm (Elaeis guineensis), teak (Tectona grandis), and burflower-tree (Neolamarckia cadamba) in INSTIPER's experimental plantation, specifically in SEAT (Stiper Edu Agro Tourism) Ungaran Regency, Central Java. The method used in this research is a modified Verstraete, namely by observing soil respiration directly on the land. Research data shows respiration rates of 100.1, 95.4, and 25.9 mg CO₂ m^-2h^-1 for oil palm, burflower-tree, and teak respectively. Soil respiration is influenced by land cover in vegetation. Differences in land cover cause differences in soil properties which then influence the rate of soil respiration. The relationship between soil respiration rate and moisture content, pH, and EC is linear positive, while with volume weight it is linear negative.

Analisis Kesesuaian Lahan untuk Tanaman Padi Sawah di Kabupaten Subang Bagian Tengah

Rahadian Adi P. — 2024-05-28

Kenaikan jumlah penduduk berbanding lurus dengan peningkatan kebutuhan akan pangan, khususnya beras. Produksi beras terbesar berasal dari budidaya padi sawah. Usaha yang dapat dilakukan untuk memenuhi kebutuhan beras adalah peningkatan produksi beras. Penelitian ini untuk memastikan ketersediaan lahan sawah yang memadai dan sesuai untuk meningkatkan produksi beras. Penelitian ini bertujuan untuk menganalisis sejauh mana lahan di bagian tengah Kabupaten Subang cocok untuk pertanian padi sawah. Metode yang digunakan adalah metode pencocokan (matching) antara kualitas lahan dengan kriteria kesesuaian lahan untuk tanaman padi sawah. Satuan peta lahan yang digunakan merupakan hasil tumpang tindih antara peta jenis tanah, dan peta kelerengan. Hasil tumpang tindih peta tersebut menghasilkan 17 satuan peta lahan yang menjadi lokasi pengambilan sampel tanah. Kelas kesesuaian lahan aktual untuk budidaya padi sawah berada dalam kategori cukup sesuai (S2rfn), serta sesuai marginal (S3fn, S3rfn, S3rn), dengan berbagai faktor pembatas seperti kondisi media perakaran, retensi hara, dan ketersediaan hara.

Pemetaan Sistem Monitoring Keragaan Produksi Berbasis Blok

Fahmi Ihsan — 2024-05-31

achieving palm oil productivity. Monitoring of production achievement is visualized in a map. The purpose of this study is analyze spatially and temporally of achieving palm oil productivity. Productivity achievement are calculated from the percentage of actual productivity against the company's plan production from 2016 - 2020. Oil palm plantation blocks with high production achievements (>90%) are visualized in green, medium production (70-89%) are visualized in yellow, and low production (<70%) are visualized in red. This research was conducted at Sepantaian Estate of PT. Bumitama Gunajaya Abadi, Kotawaringin Lama District, West Kotawaringin Regency, Central Kalimantan Province, in August - October 2022. The Sepantaian Estate oil palm plantation production achievement map can visualize data spatially on the condition of the 4 Divisions and temporally visualize the condition of production achievement in 2016-2020. The temporal map of palm oil production achievements shows that the lowest production achievements occurred in 2016 and the highest production achievements in 2020. Spatially, it is known that Division III is the division with the lowest production achievements in 2016 and 2017. Maps of oil palm plantation production achievements can be used for monitoring, evaluation and input to plantation management in making decisions in managing oil palm plantations.

Pertumbuhan Tanaman Anggrek Dendrobium (Dendrobium sp.) pada Penambahan Berbagai Macam Pupuk Organik Cair

Nabila Fairuz Sholiha — 2024-05-31

Dendrobium orchids are popular plants with high economical value and high demands among the society. The poor quality of orchids is something that can be detected from the cultivation method, including its fertilization. This research aims to discover the impact of the AB mix combination and various types of POC, determine the best type of AB mix combination and POC, and examine the comparison of the AB mix fertilizer combination and types of POC with control fertilizer (AB mix). This research used a Completely Randomized Design (CRD) with a single factor consisting of 5 treatments + 1 control, which are 3 mL/L AB mix plus 150 mL/L POC rice washing excess water, coconut water, kepok banana peel, rabbit urine, cow urine. and control (AB mix). Observation parameters include plant height, stem diameter, number of leaves, number of tillers, length of tillers, and number of roots. Observations were analyzed using Variety Printing at the level of 5% and tested further with the Orthogonal Contrast Test and DMRT at the 5% level. From this research was obtained that the AB mix and POC combination had a significant effect on leaf number parameters. The combination of AB mix and POC rabbit urine was best for the growth of Dendrobium orchids in terms of plant height, number of leaves, leaf length, number of tillers, length of tillers and number of roots. The combination of AB mix and POC was better in terms of leaf number parameters than the control (AB mix)

Pengaruh Pupuk Kandang Ayam dan Pupuk P terhadap Pertumbuhan dan Hasil Kubis Bunga (Brassica oleracea L. var. botrytis)

Shonry Roy KH Malem Tarigan — 2024-06-10

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.

Perbandingan Persentase Brondol di Berbagai Macam Areal di Perkebunan Kelapa Sawit

M.Fauzan Ramadhan — 2024-06-20

Palm oil productivity is influenced by many factors. One factor is crop rotation. Harvest rotation greatly influences productivity in oil palm plantations. Obstructed harvest rotation causes the number of fruit bunches to increase in an area compared to the weight of fresh fruit bunches (FFB) harvested. The percentage of brondol in oil palm plantations is very important because it will affect the average bushel weight (BJR) and payments to employees for oil palm plantation companies. The decrease in BJR due to the high percentage of brondol will also have an impact on the morale of workers, especially harvesters on oil palm plantations because the harvest base will be higher to get a harvest premium. This research aims to determine the comparison of the percentage of brondol in various areas, namely hilly, lowland and plain areas and to find out the causes of the high percentage of brondol in the treatment blocks. This research uses an agronomic trait survey method by observing secondary data on productivity and percentage of brondol in the last six years, then analyzed using the t test at a level of 5%. This research was carried out at PT. Cahaya Nusa Gemilang (CNG) Kenanga Estate garden, Marau District, Ketapang Regency, West Kalimantan. The results of the analysis show that plain areas have the best productivity and percentage of brondol compared to lowland and hilly areas.

Pengaruh Macam dan Perbandingan Volume Pupuk Kandang terhadap Pertumbuhan LCC Mucuna bracteata pada Tanah Latosol

Kurnia Eka Wati — 2024-06-20

Legume Cover Crop (LCC) used in Palm plantations has not yet produced for weed control because there are still large open lands. To prepare LCC seedling of the Mucuna bracteata species, a medium is required that provides good root growth, inter alia, with the addition of organic material derived from various animal debris. This research aims to find out the influence as well as the interaction of type and comparison of the volume of cage fertilizer on the growth of LCC Mucuna bracteata on the latosol soil that has been carried out at the KP2 INSTIPER, Maguwoharjo, Yogyakarta, Yogyakarta and at the Central Laboratory, Instiper on April 20, 2021 to June 30, 2021. This research uses a complete random design (RAL) or Completely Randomized Design (CRD) method that consists of two factors. The first factor is a type of cage fertilizer that consists of three levels, namely cage, chicken and goat fertilizers. The second factor is the comparison of the volume of the soil of the latosol with the cage of 3 levels of 1:1, 2:1, and 1:2 with 10 repetitions. The results of the study were analysed with the analysis of variance prints at the significance level of 5%. The effective treatment was further tested with the Duncan Multiple Range Test (DMRT) using the significance level of 5%. Results of the analysis showed that the treatment of cage fertilizer and the comparison of the soil volume of latosol with cage fertilizer did not have a real interaction and both treatments gave the same effect on the growth parameters of plants, including its length, leaf number, shoots number, top fresh weight, top dry weight, root length, fresh root weight and dry roots of Mucuna brate plant. Cage fertilizer and volume comparison gives the same bet on all the growth parameters of Mucuna bracteata.

Isolasi dan Uji Potensi Bakteri Pelarut Fosfat dari Rhizosfer Tanaman Kakao (Theobroma cacao)

Setya Puji Handayani Sutaryo — 2024-06-20

Phosphate solubilizing bacteria are important to caccao plants for phosphor ion release, so that it is not attached by Fe or Al ion, and it use by plants. These research purposes are to isolation of bacteria that is predicted to have potential as phosphate solubilizing bacteria and it’s identification. Research was conducted at Laboratorium Pusat INSTIPER Yogyakarta in March – May 2023. Research used descriptive method, survey at different caccao orchard, sterilization of research tools and materials, sampling of rhizosphere soil of caccao plants, isolation and bacteria identification. Macroscopy observation results were obtained 4 isolates that were showed transparent zones in Pikovskaya’s media and it’s potential as phosphate solubilizing bacteria. Microscopy observation results were obtained phosphate solubilizing bacteria from every location of sampling that are location 1 at Nglanggeran Kulon hamlet (isolate K1P3U5), location 2 at Gunung Buthak hamlet (isolate K2P2U1) and location 3 at Nglanggeran Wetan hamlet (isolate K3P4U5 and K3P2U2), Nglanggeran Village, Patuk Subdistrict, Gunung Kidul Regency. Phosphate solubilizing bacteria that were obtained are Genus Acetobacter from K1P3U5 and K3P4U5 isolates, and Escherichia from K2P2U1 isolate. From K3P2U2 isolate was not identification yet.

Upaya Mempercepat Kematangan Buah Kopi Arabika dengan Aplikasi Hormon

Edo Hasiholan Silalahi — 2024-06-21

Coffee is a plantation crop with significant economic value, commonly processed into flavorful beverages. Arabica coffee farmers generally face challenges during harvest and post-harvest, particularly with the necessity to pick ripe, red berries. However, during harvest, farmers often do not selectively pick the cherries, resulting in the collection of not only red but also yellowish or green berries. Plant growth regulators (PGRs) are synthetic chemicals that mimic the role of endogenous hormones. This study aims to investigate the interaction between different hormone types and varieties on the ripening of Arabica coffee berries, assess the impact of various hormones on berry maturity, and evaluate the effect of different varieties on the ripening process. The research utilized a completely randomized design (CRD) with two factors: plant growth regulators (PGRs) and coffee varieties. The observed parameters included the number of fruiting nodes per tree, the number of fruits per node, the number of red fruits in the first harvest, the number of red fruits in each subsequent harvest (across three stages), and the weight of green beans per 100 seeds. The analysis revealed no significant interaction between the application of different types of growth regulators (PGRs) and coffee varieties in accelerating the maturation of Arabica coffee berries. Notably, the Yellow Catura variety treated with the growth regulator Ethrel showed a better effect in accelerating berry maturity.