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Jurnal Penelitian Pertanian Terapan
Published by Politeknik Negeri Lampung
ISSN : 14105020     EISSN : 24071781     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Jurnal Penelitian Pertanian Terapan is a peer-reviewed journal that publishes scientific articles from agricultural disciplines covering Plantation crops, Food crops and horticulture, food Technology, Agriculture biology and agribusiness. Articles published in the Journal of Applied Agriculture may be research results (original) and scientific review articles (review). Applied Journal of Agriculture is published by Research Unit and Community Service of Lampung State Polytechnic Society 3 edition one year, that is January, May, and September. JPPT was first published in January 2000. JPPT published a print version in 2007, then started the online version or Open Journal System (OJS) in 2014. Early online versions of JPPT or OJS editing have not yet been fully implemented online management and are beginning to make improvements Web Journal view and journal cover and OJS governance management on Volume 2 No. 2 of 2017. JPPT has been indexed on Google Scholar and Garuda IPI by 2015, and by 2017 it has indexed SINTA and registered DOAJ and Crossref in the same year. We accept submissions from all over Indonesia. All submitted articles will not be published elsewhere, original and not considered for other publications.
Arjuna Subject : -
Articles 8 Documents
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Search results for , issue "Vol 24 No 4 (2024)" : 8 Documents clear
Distribusi Penyakit Bulai Jagung (Peronosclerospora maydis) pada Lahan Pertanaman Jagung dengan Pendekatan Geostatistik Nirwanto, Hery; Sutikno, Sutikno
Jurnal Penelitian Pertanian Terapan Vol 24 No 4 (2024)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jppt.v24i4.3431

Abstract

Downy mildew Peronosclerospora spp. is an important disease in corn (Zea mays L.). The damage of downy mildew caused by Peronosclerospora spp. is this pathogen can reach 90-100%, especially in corn varieties that are susceptible to downy mildew. So far, most research has only been limited to knowing the incidence of the disease, without being able to describe the spatial distribution pattern of downy mildew in the planting area. This research aims to determine the occurrence of disease and the spatial distribution patterns of downy mildew on a geospatial basis. Samples were taken from three corn fields affected by downy mildew on three fields planted with corn plants that were attacked by downy mildew. Data on the level of infestation, along with its coordinates, were used to create a theoretical semivariogram model, Gaussian, spherical, exponential. The distribution pattern is approached by interpolating attack level data using the kriging method. The research results show that the appropriate theoretical semivariogram model to describe the distribution of P. maydis in the observation area is the Gaussian model. The distribution of pathogens throughout the observation area began with a clustered pattern and evened out at the end of the observation. Foci had a clustered pattern in the first to fourth weeks of observation. Then each foci experienced development, so that the distribution pattern changed to become even after the fifth week of observation.
PENGARUH KONSENTRASI BIOBOOST DAN MONO KALIUM PHOSPAT TERHADAP PRODUKSI KACANG MERAH VARIETAS INERIE DI DATARAN RENDAH Lewar, Yosefina; Hasan, Ali; Vertygo, Stormy
Jurnal Penelitian Pertanian Terapan Vol 24 No 4 (2024)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jppt.v24i4.3474

Abstract

The research objective  to examine the best concentration of BioBoost and MKP, as well as their interaction, in enhancing the production of kidney beans of the Inerie variety in lowlands. The study was designed using a Factorial Randomized Complete Block Design with treatments including BioBoost concentrations (10 ml/l, 15 ml/l, 20 ml/l, 25 ml/l) and MKP concentrations (5 g/l, 10 g/l, 15 g/l). The data were analyzed for variance and tested with Honestly Significant Difference at 5%. The research results indicate that 1) BioBoost at 25 ml/l resulted in the lowest number of empty pods (1.67 pods), the highest number of seeds per plant (44.61 grains), the heaviest seed weight per plant (15.80 g), and the heaviest weight of 100 seeds (36.29 g), 2) MKP at 15 g/l resulted in the highest number of seeds per plant (40.14 grains), the heaviest seed weight per plant (14.30 g), and the heaviest weight of 100 seeds (34.61 g), and 3) the interaction between BioBoost concentration at 25 ml/l and MKP at 5 g/l  was the best for the highest number of filled pods (15.89 pods) and the lowest number of wrinkled seeds (0.75 grains).  
The Impact of Macro Economic Variables on the Exchange Rate of Large Ruminant Livestock Farmers in East Nusa Tenggara: An Analysis of the Time Series 2008-2022 koylal, johny agustinus; M. Kuang, Stefanus; C. Abineno, Jamseng
Jurnal Penelitian Pertanian Terapan Vol 24 No 4 (2024)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jppt.v24i4.3636

Abstract

This study aims to examine the effects of inflation, loan interest rates, labor, and exchange rates on the exchange rate of large ruminant cattle farmers in East Nusa Tenggara and the development of the exchange rate achievement rate of large ruminant cattle farmers for the period 2008-2022. The data used in this study is time series data for the period 2008-2022 obtained from the Central Statistics Agency. The analysis method used is a multiple regression model with software econometric views 12 and a quantitative descriptive method. The research variables include the exchange rate of large ruminant farmers, inflation, loan interest rates, labor, and exchange rates. The results of the analysis show that inflation, loan interest rates, and exchange rates have a significant effect on the exchange rate of large ruminant farmers. The purchasing power and welfare of East Nusa Tenggara farmers are relatively low nationally but have a higher average growth.
Pola Pertumbuhan Bibit Anggrek (Dendrodium sp.) Dalam Tahapan Aklimatisasi Pada Pengaruh Naungan dan Media Tanam Diana, Susanti; Sakalena, Firnawati; Danial, Ekawati; Yulhasmir, Yulhasmir; Yasa, Adiran Putra; Meiwinda, Eka Rizki; Zairani, Fitri Yetty; Sebayang, Nico
Jurnal Penelitian Pertanian Terapan Vol 24 No 4 (2024)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jppt.v24i4.3718

Abstract

The research was conducted at the Experimental Garden of the Faculty of Agriculture, Baturaja University. Ogan Komring Olu Regency. The materials used were: Dendrobium sp orchid seedlings, charcoal, ferns, coconut fiber. The tools used were plastic/paranet, 7 cm diameter plastic pots. ruler, pot rack, treatment labels, stationery, and cameras. The study used a Randomized Block Design (RAK). The factorial treatment consisted of a combination of Shade (N), and planting media composition (M), the combination of Shade (N) consisted of 3 levels and the composition of the planting media consisted of 3 levels, the treatment was repeated three times so there were 27 combinations. Each treatment consisted of 5 plants with five sample plants. The variables observed were the percentage of growth, plant height, number of leaves, number of roots, root length, and wet weight of the plant. From the results, it was obtained that the average vegetative appearance of dendrobium orchid seedlings from the shade and planting media treatments showed more vigorous growth than without shade. The average growth of shaded seedlings was higher than without shade. Growth was higher in 50% shade. The average growth of orchid seedlings was higher in coconut fiber, fern, and rice husk charcoal (1:1:1) planting media except for leaf chlorophyll content. Correlation regression testing of the percentage of survival determined plant height by 0.55. number of leaves 0.19, dry plant weight 0.57, root length 0.005, number of roots 0.63, and leaf chlorophyll content 0.41. Based on the coefficient of determination (R2), the percentage of plant growth correlated with the number of roots, dry plant weight and plant height. The conclusion of this study is based on the plant growth pattern, the use of 50% shade and the use of coconut fiber, fern, and rice husk charcoal (1:1:1) planting media is a better treatment for the growth of Dendrobium sp. Orchids. The percentage of survival determined plant height by 0.55. number of leaves 0.19, dry plant weight 0.57, root length 0.005, number of roots 0.63, and leaf chlorophyll content 0.41. From the results of the determination coefficient (R2), it can be seen that the percentage of plant growth is correlated with the number of roots, dry weight of the plant and plant height.
An Aeration Pressure, Plant Spacing, And Dissolved Oxygen For Growth Of Lettuce (Lactuca Sativa L.) Plants In Floating Hydroponics puspitahati, Puspitahati; Harmanda Prima, Fidel; Izzah, Nurul; Prettisha, Nikita
Jurnal Penelitian Pertanian Terapan Vol 24 No 4 (2024)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jppt.v24i4.3722

Abstract

The successful growth of lettuce plants in floating hydroponics is controlled by the availability of oxygen and the level of plant density.  Dissolved oxygen in water is controlled by the aeration pressure provided in hydroponics. This research aims to determine The impact of aeration pressure on the growth of lettuce (Lactuca sativa L) in a floating hydroponic system, considering different planting spacings. The research employed a Randomized Block Factorial Design (RAKF), incorporating two treatment factors: plant spacing (Factor A) with two different levels, and aeration pressure (Factor B) with three different levels. Each combination was replicated three times. And oxygen linear regression analysis for dissolved (Dissolved Oxygen) and aeration pressure.  The conclusion of the research showed that The conclusions of this research were The highest production of lettuce was achieved with treatment A2B3, using a planting distance of 30 cm and aeration pressure of 16 kPa, resulting in a total fresh weight of the plants of 82.89 g, Lettuce planted at a spacing of 30 cm outperformed lettuce planted at 20 cm in terms of canopy width, root length, and total fresh weight, 3.The aeration pressure increases, the concentration of dissolved oxygen in the water also increases, the canopy width, root length, and total fresh weight of lettuce. The average dissolved oxygen ranged from 7.17 to 7.22 mg/l, so the aeration pressure correlates with increased dissolved oxygen levels, suggesting that higher aeration pressure correlates with increased dissolved oxygen levels. The Suggestion was Further research should be conducted on the appropriate size of the nutrient solution reservoir concerning the aeration pressure applied.  
Comparison of Filtration Processes Using Microfiltration, Ultrafiltration, Nanofiltration and Reverse Osmosis Methods on The Characteristics of Lemon Juice Functional Beverages At Pilot Scale ikrawan, yusep; Rukmana, Jaka; Gozaly, Thomas; Triani, Rini; Qoharisma Salam, Wildan; Hariadi, Hari
Jurnal Penelitian Pertanian Terapan Vol 24 No 4 (2024)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jppt.v24i4.3759

Abstract

This study aims to determine the comparison of filtration processes using filtration membranes which include Microfiltration, Ultrafiltration, Nanofiltration and Reverse Osmosis on the characteristics of lemon juice functional drinks on a pilot scale, so that the stability of product results from the four different methods can be known. The best product quality parameters in this study include vitamin C content, total acid content, total soluble solids content, antioxidant activity, pH value, viscosity value, *b value (yellowish color), total microbial reduction, and hedonic quality test (aroma, taste, and aftertaste). So that a comparison of product characteristics can be obtained. The research conducted will go through three stages including the manufacture of control juice products as a comparison, the characteristics of products processed using membrane filtration machines and data processing using t tests conducted to find a comparison of the results of these products.The results of this study are the manufacture of lemon juice functional beverages using the filtration membrane method affects the vitamin C content, total acid content, total dissolved solids and antioxidant activity because the pore size of the membrane will decrease and the particles contained in the sample will be increasingly filtered and after being compared between each method, the highest results are obtained in the microfiltration method and the lowest is reverse osmosis. The manufacture of lemon juice functional beverages using the filtration membrane method affects the pH value, viscosity and color because the pore size of the microfiltration membrane to reverse osmosis is getting smaller so that it will decrease the pH value, viscosity and color. The manufacture of lemon juice functional beverages using the filtration membrane method affects the quality of the product, where in organoleptic testing the color attributes of the MF method produce lemon yellow beverage products. At the aroma attribute, the UF method produces a typical lemon-scented beverage product. At the taste attribute, the RO method produces a very sour beverage product typical of lemon. At the aftertaste attribute, the MF method produces very bitter beverage products.
Analysis of the Combination of Planting Distance and Dosage of Environmentally Friendly Liquid Organic Fertilizer on Shallot Growth Sembiring, Desi; Hawayanti, Erni; Astuti, Dessy Tri; Lusia, Maria; Karneta, Railia; Purwanti, Yani; Sebayang, Nico Syahputra
Jurnal Penelitian Pertanian Terapan Vol 24 No 4 (2024)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jppt.v24i4.3790

Abstract

This study aims to analyze the effect of planting distance and liquid fertilizer dosage on the growth and production of shallots (Allium ascalonicum L). This study examines the effect of a combination of planting distance and dosage of liquid organic fertilizer based on animal waste on the growth and production of shallots (Allium spp.). The study was conducted using a factorial Randomized Block Design (RAK) with two main factors, namely planting distance (D1: 20 × 20 cm, D2: 15 × 20 cm, D3: 10 × 20 cm) and dosage of liquid organic fertilizer (J0: control, J1: 250 ml/liter of water, J2: 500 ml/liter of water, J3: 750 ml/liter of water). The variables observed included plant height, number of leaves, bulb weight per plant, and bulb weight per plot. The results showed that increasing fertilizer dosage and wider planting distance significantly increased plant growth and production. ANOVA showed that planting distance and fertilizer dose had a significant effect on plant height, number of leaves, tuber weight per plant, and tuber weight per plot, but the interaction between the two factors was not significant. Application of high dose fertilizer (750 ml/liter) and wider planting distance (20 × 20 cm) resulted in optimal growth in all variables.
PERFORMANCE OF SPRINKLER AND DRIP IRRIGATION IN CULTIVATION OF CRYSTAL GUAVA (Psidium guajava L.) AT P.T. GGPPG 4 EAST LAMPUNG Suprapto, Suprapto; Idrus, Muhammad; I Gde
Jurnal Penelitian Pertanian Terapan Vol 24 No 4 (2024)
Publisher : Politeknik Negeri Lampung.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25181/jppt.v24i4.3861

Abstract

This research was conducted at PT Great Giant Pineapple Plantation Group 4 (GGPPG4), located in Rajabasa Lama, East Lampung, to evaluate the effectiveness of two irrigation systems in the cultivation of crystal guava (Psidium guajava L. cv. Kristal). The mini sprinkler irrigation system was applied in Block 408 P (4.2 ha) and the drip irrigation system in Block 412 N (3.46 ha). Parameters evaluated included water uniformity coefficient, soil moisture condition, water usage efficiency, and water productivity. The results showed that the water uniformity coefficient of the mini sprinkler irrigation system reached 88.49% (classified as good), higher than the drip irrigation system, which was 77.20% (classified as fair). However, drip irrigation was more efficient in water usage with a total requirement of 2,516 m³/ha, compared to 3,260 m³/ha for the mini sprinkler system. The water productivity of drip irrigation reached 11,942 kg/m³, much higher than the mini sprinkler system, which only reached 4,965 kg/m³. Although the mini sprinkler system had better water distribution uniformity, the efficiency and water productivity of drip irrigation provided more optimal results. This study indicates that drip irrigation is superior in supporting efficient and sustainable crystal guava cultivation at the research site.

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