AGROISTA : Jurnal Agroteknologi

Pengaruh Waktu Pemangkasan Pucuk dan Konsentrasi Pupuk Organik Cair (POC) Limbah Air Lele terhadap Pertumbuhan dan Hasil Tanaman Mentimun Baby (Cucumis sativus L.)

2025-09-25T14:59:32+07:00

Cucumber is vegetable containing protein, fat, and vitamins. One way to increase growth and yield cucumbers by pruning shoots and catfish water LOF. Study aims to determine best time for pruning shoots and concentration catfish water LOF the growth and yield cucumbers. Study design Completely Randomized Design (CRD) Factorial consisting two factors and one control. First factor time pruning shoots 3 levels, namely: pruning shoots aged 14, 21, and 28 HST. Second factor concentration catfish water POC 3 levels, namely: concentrations 200 ml/L, 300 ml/L, and 400 ml/L. Control is without pruning and catfish water. Results analyzed ANOVA, to find out real difference between treatments, followed by Duncan Multiple Range Test (DMRT) 5% level. Testing treatment with control using Ortogonal Contrast. The results showed there was an interaction between treatment pruning shoots and concentration catfish water LOF, parameters of plant length 14 DAP, stem diameter 21 DAP, number female flowers 35 DAP, weight a fruit and a plant. Pruning treatment 28 DAP showed the best results for number leaves 14 DAP. Treatment catfish water concentration 300 ml/L showed best results for parameters number of leaves 14 DAP, leaf area, and leaf area index.

Keragaan Karakter Agronomi Beberapa Galur Tanaman Padi (Oryza sativa L.)

2025-10-02T14:02:03+07:00

Efforts to increase rice production are being made thru plant breeding activities, including testing or evaluating the agronomic characteristics of promising lines. The purpose of this study is to evaluate the agronomic characteristics of several promising rice lines, namely lines GKYGK 1, GKYGK 2, GKYGK 3, and GKYGK 4, compared to the Gilirang and Segreng Handayani varieties. The research was conducted from November 2022 to March 2023 in Mojosari Village, Playen District, Gunungkidul Regency, Yogyakarta. The tested rice lines and their control varieties were planted in plots measuring 500 m2 each, using the legowo planting system with a spacing of 2:1 or (25 X 12.5 X 50) cm. From each line, 4 tillers were sampled to observe several agronomic characteristics including: plant height, number of productive tillers, panicle length, flag leaf length, flag leaf width, grain length, grain width, number of filled grains, number of empty grains, grain weight per tiller, and weight of 1,000 grains. In addition, yield from the harvested area was also observed. The data obtained were then analyzed using Analysis of Variance (ANOVA). If there were significant differences, the testing was continued with Duncan's New Multiple Range Test (DMRT) at the 5% level. The research results showed that the GKYGK 3 line had high yield potential in several characteristics, such as having the shortest plant height (117.31 cm), the highest 1,000-grain weight of filled grains (29.43 g), and the highest yield per square meter (9.688 kg). The GKYGK 1 line had high yield potential, such as having the highest number of productive tillers (18.56 stems), the longest panicle length (28.47 cm), and the highest grain weight per clump (60.68 g). The GKYGK 2 line had the highest percentage of filled grains (79.33%) and the longest grain length (10.53 mm).

Stok Karbon pada Berbagai Umur Kelapa Sawit Perkebunan Kelapa Sawit

2025-09-25T14:54:26+07:00

Oil palm plantations are one of the important carbon stocks for climate change mitigation because of their ability to store carbon and absorb free carbon from the air. This study aims to calculate carbon stocks at various stages of oil palm growth. The samples in this study were oil palm producing plants with various age classes; young plants (3-8 years), juvenile plants (9-14 years), and old plants (> 21 years) taken with a sample of 3 plots with 1 plot of 10 trees each in each age class variation using a quadrant (sample plot) plot size of 20 x 60 m with 3 replications. The sampling of understory vegetation was carried out in a measurement plot with a size of 1 m x 1 m as much as 1 sample placed in each plot of oil palm stand biomass measurement. The study was conducted using a carbon stock measurement method with a non-destructive approach using an allometric equation. In young, juvenile, and old oil palm plants. on sample plots according to the predetermined age groups. The research samples were selected by purposive sampling. In each sample, carbon stocks were measured in the oil palm plants and floor vegetation carbon stocks. The results of the study showed that carbon stock analysis showed a close relationship with plant age. Oil palm plant carbon stocks continued to increase with increasing plant age. Therefore, it can be concluded that oil palm biomass increases with increasing age in young plants (3.77 tons/ha), adolescents (12.61tons/ha), and old (>21 years, 167.82 tons/ha).

Uji Kinerja Alat Kastrasi Modifikasi Bambu pada Areal Tanaman Belum Menghasilkan PT. Sawit Sejahtera

2025-09-19T11:02:40+07:00

This research was conducted at PT. Sawit Sejahtera, South Sumatra Province, from February to April 2024. This study aimed to assess and test the effectiveness of castration tools by comparing 8 cm dodos with modified bamboo tools for castration on immature oil palm plants. This study used a survey method to describe the research location and collect primary data. The research was conducted in Block E-01, which has a hilly area. Each tool was tested on 150 sample trees located on 10 different terraces. The data observed included worker output, work quality, and safety risks. Data were analyzed using an independent t-test. The results showed that the use of the modified bamboo tool for castration was generally more effective as it produced 15.71% higher worker output compared to the dodos tool. Work quality was also better with the bamboo tool, as no fronds were damaged in the sample trees, while 126 trees or 84% of the sample trees were damaged due to the dodos tool. However, in terms of safety, no accidents were reported from using either tool. Nonetheless, the tool's effectiveness comes with the note that castration must be performed monthly.

Pengaruh Aplikasi Pupuk Kasgot dan NPK 16:16:16 terhadap Pertumbuhan Bibit LCC (Mucuna bracteata)

2025-09-17T12:05:30+07:00

One of the most crucial phases for successful oil palm plantations is replanting management. One way to suppress weed growth in immature plantations (TBM) is by using tissue culture methods, namely planting legume cover crops (LCC). One type of LCC that grows very quickly is Mucuna bracteata. This study aimed to determine the effect of organic compost and NPK 16:16:16 fertilizer on the growth of Mucuna bracteata LCC seedlings. The study was conducted from October to December 2024 at KP2 INSTIPER Yogyakarta in Wedomartani Village, Depok District, Sleman Regency. The average temperature was 27°C to 30°C, and the elevation was 118 meters above sea level. This study used a completely randomized design (CRD) method with two factors. The first factor was the dose of Kasgot organic fertilizer consisting of four levels, namely control (0 g/plant), 4 g/plant, 8 g/plant, and g/plant. The second factor was the dose of NPK 16:16:16 fertilizer with four levels, namely control (0 g/plant), 2 g/plant, 4 g/plant, and 6 g/plant. The research data were analyzed using the analysis of variance (ANOVA) test at a 5% significance level and the DMRT further test. The results showed that there was no significant interaction between the dose Kasgot fertilizer and NPK fertilizer in influencing the growth of Mucuna bracteata. In addition, none of the treatments had a significant effect on plant growth.

Respon Pertumbuhan Beberapa Varietas Bibit Kelapa Sawit di Pre-Nursery pada Kondisi Cekaman Kekeringan

2025-09-19T11:11:45+07:00

The objective of the study was to identify the responses of oil palm seedlings to drought stress conditions during pre-nursery cultivation. The research was conducted at two locations: the Maguwoharjo Educational and Research Field (Kebun Pendidikan dan Penelitian/KP2) and the Central Laboratory of the STIPER Yogyakarta Institute of Agriculture. The research was carried out from April to July 2021. A factorial experimental design with two factors arranged in a completely randomized design (CRD) was used in this study. The first factor consisted of three hybrid oil palm varieties: D×P SAIN-2 (V1), D×P SAIN-3 (V2), D×P SAIN-4 (V3). The second factor was the irrigation frequency or drought stress level, with three levels: watering once a day (F1), watering every 2 days (F2), and watering every 3 days (F3). The research data were analyzed using analysis of variance (ANOVA) at significant level of 5%. In the event of significant differences being identified among the treatments, further testing was conducted using Duncan's Multiple Range Test (DMRT) at a 5% significance level. The result showed that there was no significant interaction between different varieties and irrigation frequencies on oil palm seedling growth in the pre-nursery stage. However, the variety D×P SAIN-4 exhibited significant effect on stem diameter, leaf number, leaf area, and fresh stem weight. Under drought stress conditions, the best growth performance was observed in oil palm seedlings of the D×P SAIN-4, followed by the D×P SAIN-2. Additionally, irrigation frequency influenced stem diameter and leaf number. Overall, oil palm seedlings in the pre-nursery stage showed the best growth when watered once a day. In the pre-nursery cultivation stage, all oil palm seed varieties can tolerate watering every 2 (two) days

Identifikasi Jamur pada Akar Tanaman Karet yang Berasal dari KP 2 (SEAT) Ungaran

2025-09-19T10:49:20+07:00

Fungi can grow and live in plant tissue. Endophytic fungi can provide benefits to plants in the form of increased resistance to disease attacks and can stimulate growth. This research aims to isolate and identify fungi in the roots of rubber plants in KP2 (SEAT) Ungaran. Sampling was taken at the KP2 (SEAT) Ungaran rubber plantation, followed by isolation and identification at the Laboratory of the Institute of Agriculture STIPER Yogyakarta. The research started from April to June 2024. Sampling used a diagonal method and the fungal identification method used a descriptive method. The results of isolation and identification obtained 13 isolates identified as the genus Colletotrichum sp. (B1P5U1 and B3P2U4), Fusarium sp. (B1P5U2, B1P5U3, B2P2U3 and B3P3U3), Geotrichum sp. (B2P5U1), Paecilomyces sp. (B3P1U5), Penicillium sp. (B1P1U3, B1P4U5, and B3P2U2), Rhizoctonia sp. (B2P4U3), Rhizopus sp. (B1P1U4), and 2 unknown isolates (B2P4U2 and B2P5U2).

Pengaruh Pemberian Macam Pupuk Organik dan Volume Penyiraman terhadap Pertumbuhan Bibit Kelapa Sawit di Main Nursery

2025-10-28T10:01:02+07:00

A study was conducted from March to May 2025 at KP2 STIPER Yogyakarta Agricultural Institute located in Maguwoharjo Village, Depok District, Sleman Regency, Yogyakarta, to determine effects of organic fertilizer types and watering volumes on growth of oil palm seedlings in the main nursery. The experiment employed a factorial design arranged in a completely randomized design (CRD) with two factors: (1) type of organic fertilizer (vermicompost, chicken manure, and Mucuna bracteata green manure) (2) watering volume (500, 1000, and 1500 mL/day). The data were analyzed using analysis of variance (ANOVA) at a of 5% significant level. The results showed no interaction between fertilizer type and the watering volume on the growth of oil palm seedlings in the main nursery. Providing 500 mL of water was sufficient for the growth of oil palm seedlings in the main nursery. The application of different types of organic fertilizers vermicompost, chicken coops, and green manure had similar positive effects on seedling growth.