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Planta Tropika
Published by Universitas Muhammadiyah Yogyakarta
ISSN : 0216499X     EISSN : 25287079     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
PLANTA TROPIKA : Jurnal Agrosains (Journal of Agro Science) provides a forum for researchers on applied agricultural science to publish the original articles. PLANTA TROPIKA published two times a year (February and August) by Universitas Muhammadiyah Yogyakarta in collaboration with Indonesian Association of Agrotechnology / Agroecotechnology (PAGI). Planta Tropika focuses related to various themes, topics and aspects including (but not limited) to the following topics Agro-Biotechnology, Plant Breeding, Agriculture Waste Management, Plant Protection, Soil Science, Post Harvest Science and Technology, Horticulture.
Arjuna Subject : -
Articles 10 Documents
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Search results for , issue "Vol 12, No 2 (2024)" : 10 Documents clear
Front Matter Planta Tropika Vol.12 No.2 tropika, Planta
PLANTA TROPIKA Vol 12, No 2 (2024)
Publisher : Department of Agrotechnology, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v12i2.24148

Abstract

Estimating SPAD, Nitrogen Concentration, and Chlorophyll Content in Rice Leaves using Calibrated Smartphone Digital Image Kautsar, Valensi; Faizah, Kuni; Uktoro, Arief Ika; Khasanah, Lutfiatun; Filiphus, Filiphus
PLANTA TROPIKA Vol 12, No 2 (2024)
Publisher : Department of Agrotechnology, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v12i2.20553

Abstract

Laboratory analysis is commonly used to determine nitrogen and chlorophyll content. However, smartphones can serve as rapid, mobile, and non-destructive tools for this purpose. An equation can be created to calculate nitrogen and chlorophyll content by analyzing color parameters from digital images of rice leaves. An examination was performed on 86 rice leaf samples from the maximum tillering and mature stages. Rice leaf photos were taken with a smartphone in natural outdoor lighting. Color calibration with Spydercheckr was needed to adjust for lighting conditions. Uncalibrated and calibrated image data were analyzed to determine RGB values converted into CIELAB color space. The L*, a*, and b* values had a significant correlation with SPAD parameters, nitrogen concentration, chlorophyll a, b, and total chlorophyll content. This connection was higher after image calibration. The study found that smartphone images could predict SPAD values with 87.9% to 92.3% precision, depending on color space. Using a smartphone digital picture of L* and a* values, N content could be estimated with 84.7% and 81.9% accuracy. Average accuracy for chlorophyll a, b, and total chlorophyll content was 65% to 76%. This study shows smartphone images can estimate rice leaf SPAD and nitrogen content. 
Back Matter Planta Tropika Vol. 12 No. 2 tropika, Planta
PLANTA TROPIKA Vol 12, No 2 (2024)
Publisher : Department of Agrotechnology, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v12i2.24151

Abstract

Physiological Response of Two Amaranth Varieties (Amaranthus tricolor L.) to Urea Applications Sari, Fevi Catur Wulan; Purwanto, Edi; Rahayu, Muji; Sakya, Amalia Tetrani
PLANTA TROPIKA Vol 12, No 2 (2024)
Publisher : Department of Agrotechnology, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v12i2.20933

Abstract

Amaranth, a highly nutritious leaf vegetable, requires adequate nutrients, especially nitrogen fertilizers, to grow well and produce an optimal yield. Urea is commonly used to promote the growth of amaranth plants. This study examined the physiological responses of two varieties of amaranth to the application of urea fertilizer. This study examined the physiological responses of two varieties of amaranth to the application of urea fertilizer. This investigation was conducted in July - August 2023 in Sukosari Village, Jumantono, Karanganyar. The study utilized a completely randomized design (CRD) with two treatment variables. The first variable consisted of a variety of amaranth, including green (B1) and red (B2) varieties. The second variable in the study was the dosages of urea, including 0, 50, 100, 150, 200, 250, and 300 kg.ha-1. The study observed no correlation between various varieties of amaranth and the dose of urea applied in terms of plant growth and physiological activities. There was no discernible impact on the growth or physiological activity of both varieties of amaranth when urea fertilizer was applied. Both varieties of amaranth showed similar physiological responses to urea fertilization. However, the effect of adding urea fertilizer was to enhance the vegetative growth of amaranth plants.
Abundance, Attack Intensity, and Distribution of Spodoptera frugiperda J.E. Smith in Kulon Progo, Yogyakarta Putra, Ichsan Luqmana Indra; Saputra, Wahyu Hana; Hanafi, Yahya
PLANTA TROPIKA Vol 12, No 2 (2024)
Publisher : Department of Agrotechnology, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v12i2.21296

Abstract

Spodoptera frugiperda is an invasive corn pest from America and has entered Indonesia, including Kulon Progo. However, the abundance, attack intensity, and distribution of S. frugiperda have never been reported from Kulon Progo. This study aimed to analyze the abundance, attack intensity, and distribution of S. frugiperda larvae in Kulon Progo. This research was conducted from January to March 2023. Sampling locations were determined using the purposive sampling method. The egg packages and larvae of S. frugiperda found were counted to determine the abundance of S. frugiperda. The intensity of S. frugiperda infestation was calculated using the letter W scouting method. The results showed that 24 S. frugiperda egg packages were obtained in Kulon Progo, and the abundance of S. frugiperda was 0.01 individuals per plant. The attack intensity of S. frugiperda in Kulon Progo reached 4.97%, with the highest attack intensity in Nanggulan (8%) and the lowest in Wates (1.5%). The larvae of S. frugiperda are distributed in four sub-districts in Kulon Progo. This study concluded that the attack intensity of S. frugiperda in Kulon Progo was included in the mild category. 
Floral Morphological Variation in Black Pepper (Piper nigrum L.) Varieties and Hybrid Lines Wahyuni, Sri; Susilowati, Mariana; Sirait, Nursalam; Bermawie, Nurliani
PLANTA TROPIKA Vol 12, No 2 (2024)
Publisher : Department of Agrotechnology, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v12i2.15970

Abstract

The inter-variety crossing is a promising approach to increase black pepper production. However, successful hybridization hinges on floral characteristics. This study investigated the floral morphology of diverse pepper varieties and their hybrid offspring. Eighteen genotypes, including parent varieties and F1 hybrids, were cultivated in pots under greenhouse conditions at the Indonesian Spice and Medicinal Crops Research Institute, Bogor. Flower and fruit traits were observed.  Results indicated variability in spike morphology. While most ripe spikes were yellowish-green, exceptions included LH 20-1 and LH 22-1. Ciinten and LH 4-5 displayed superior spike length and fruit set, contrasting with the shorter, less productive spikes of 20-1, 22-1, and 455-N2-97.  Stigma receptivity and another dehiscence coincided in Ciinten, N2BK, LH 6-2, and LH 4-5, simplifying the hybridization process. Conversely, earlier stigma receptivity in Petaling 1, Petaling 2, Natar 1, Natar 2, LH 44-9, LH 20-1, and LH 22-1 facilitated castration procedures. These findings offer valuable insights for optimizing pepper breeding programs.
Quality Coefficient on Gene Differentiation and Phenotype: Clone Assessment of Saccharum officinarum Linn Budi, Setyo; Lailiyah, Wiharyanti Nur; Prihatiningrum, Andriani Eko; Samidjo, Gatot Supangkat
PLANTA TROPIKA Vol 12, No 2 (2024)
Publisher : Department of Agrotechnology, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v12i2.22232

Abstract

The production of superior sugarcane varieties can be achieved through crossbreeding between superior parent plants based on the desired advantages. Research examined the diversity of superior clones of SB04, SB11, SB19, and SB20 and identified the clones with the highest productivity potential. The first ratoon research was carried out from August 2020 to July 2021. Data analysis used descriptive-analytic methods, regression tests, and genetic diversity assessment. The observation was made on agronomic variables and potential productivity. Based on the result, the genetic diversity of the superior clone SB04 showed close similarity to the heterozygous combination PS862. The superior clone SB11 showed a tendency to inherit traits similar to Cenning. The superior clones SB19 and SB20 lean towards the VMC71-238 variety and the combination of PSBM01 and VMC71-238. The superior clones SB04, SB11, SB19, and SB20 produced higher weight, yield, and sugarcane crystal content compared to the characteristics of their two parents. Clones SB04, SB11, SB19, and SB20 produced high crystal content, ranging from 8.47 to 15.26 tons/ha, higher than their parent plants. SB19 had the highest yield, namely 15.26 tons/ha. Although some clones dominate crystal production, other clones inherit traits from both parents but are less dominant in overall productivity.
Goatweed Flower Extract (Ageratum conyzoides L.) as A Botanical Insecticide for Pest Control Crocidolomia binotalis Z. Nurhidayat, Setia P.; Rusdi, Nurul; Ulinuhayani, Muhammad; Singgih, Bambang; Triono, Budi
PLANTA TROPIKA Vol 12, No 2 (2024)
Publisher : Department of Agrotechnology, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v12i2.16425

Abstract

Crocidolomia binotalis Z. is an important cabbage plant pest in Indonesia. Nevertheless, pest control strategies depend on synthetic pesticides, negatively impacting ecosystems.Therefore, developing an effective organic pesticide approach to controlling C. binotalis is necessary. This research aimed to test the effectiveness of goatweed flower extract (Ageratum conyzoides L.) in controlling pest C. binotalis. The research consisted of two sets of experiments with two methods: the stomach and contact poison. Each experimental set was arranged in a completely randomized design (CRD) with three replications. The treatments were six levels of extract concentration at 0%, 15%, 30%, 45%, 60%, and 75%. The results showed that the application of A. conyzoides flower extract using the stomach and contact poison methods significantly increased the percentage of larval mortality 24 hours after application (haa) and the percentage of total larval mortality. The flower extract treatment of A. conyzoides significantly reduced the percentage of leaf area eaten, increased larval mortality, inhibited pupation and imago emergency, and shortened the larval stage's duration. The percentage of larval mortality through contact poison was higher than stomach poison.
Physiological Traits of Vanilla Plant (Vanilla planifolia Andrew) in Various Types of Shade Trees Suryanti, Sri; Mawandha, Hangger Gahara; Oktavianty, Hera
PLANTA TROPIKA Vol 12, No 2 (2024)
Publisher : Department of Agrotechnology, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v12i2.21209

Abstract

Vanilla plants are CAM species and are very sensitive to direct sunlight. Shade plants are crucial for mitigating the intensity of sunlight to protect vanilla plants. The physiological properties of vanilla plants under different shade trees were studied to understand how shade trees affect vanilla plants. The research applied a randomized completely block design with four groups. Planting was carried out using four shade plants, including Gliricidia sepium, Syzygium aromaticums, Erythrina variegata, and Leucaena leucocephala. Microclimate conditions such as temperature, humidity, and sunlight intensity were observed three times a day (morning, afternoon, and evening). Physiological observation parameters include chlorophyll A, chlorophyll B, total chlorophyll, proline, and relative water content. The research results showed that temperature, humidity, and intensity of sunlight varied depending on the type of shade plant. Types of shade plants significantly influence chlorophyll A content, chlorophyll B levels, total chlorophyll, proline, and relative water content. The conclusion indicated that the type of shade plant affects the microclimatic conditions of the vanilla plant, thereby influencing the physiological traits of the vanilla plant.
Effects of Water Clover Density and Submerged NPK Fertilizer on Rice Production Budiastuti, Maria Theresia Sri; Supriyono, Supriyono; Rahayu, Muji; Setyaningrum, Desy; Septin, Latiffah Indriana
PLANTA TROPIKA Vol 12, No 2 (2024)
Publisher : Department of Agrotechnology, Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v12i2.19275

Abstract

Water clover is an important weed that causes a decrease in rice yields by 15-42%. This study examined the effects of water clover density andNPK fertilizer application on rice yields. This study was arranged in a complete randomized block design with two factors. The first factor was water clover density with three levels, consisting of no water clover, one water clover, and two water clover. The second factor was the application of NPK, which was applied to the surface, submerged in 3, 6, and 9 cm—performed with three replications. Water clover density affected the number of rice panicles, the number of rice grains per panicle, the weight of 100 seeds, rice biomass, and water clover biomass. The application of submerged NPK affected rice biomass. The application of NPK on the surface reduced the highest rice biomass. Two water clovers per rice plant reduced the number of rice panicles by 39% compared to without weeds. Rice biomass decreased by 40% and 50% at weed density of one and two water clover weeds per rice plant, respectively. The higher the density of clover weeds, the higher the decline in harvest yields and the higher the biomass of clover weeds.

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