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Plantropica: Journal of Agricultural Science
Published by Universitas Brawijaya
ISSN : -     EISSN : 25416677     DOI : http://dx.doi.org/10.21776/ub.jpt
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
PLANTROPICA: Journal of Agricultural Science aims to provide a forum for international researchers on applied agricultural science to publish the original articles. The scope of PLANTROPICA: Journal of Agricultural Science are crop science, agronomy, horticulture, plant breeding, agricultural environmental resources, agricultural climatology and plant physiology.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Agronomi dan Ilmu Tanaman
Articles 323 Documents
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Preliminary Evaluation of Leaf Extracts from Three Zimbabwean Aloe Species as Potential Bio-Stimulants on Tomato (Solanum lycopersicum L.) Health and Yield Mafuratidze, Rumbidzai; Chatyoka, Anesu I.; Simbanegavi, Michelle A.; Zhou, Fortune N.; Dzvuke, Tinodaishe M.; Sanjobo, Jennifer T.; Mashavakure, Nilton
Plantropica: Journal of Agricultural Science Vol. 11 No. 1 (2026): Februari
Publisher : Department of Agronomy, Faculty of Agriculture, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpt.2026.011.1.11

Abstract

The use of natural bio-stimulants has gained attention over the past few years, aiming to reduce the excessive use of agrochemicals in crop production thus promoting sustainable agriculture. This study aimed to investigate the bio-stimulant potential of foliar-applied aloe leaf extracts on tomato (Solanum lycopersicum L.) health and yield. The study was done over a period of six months at Chinhoyi University of Technology Farm, Zimbabwe. The control involved normal farmer practice using Compound C® fertiliser (6% N: 15% P2O5: 12% K2O), calcium nitrate (15.5% N) and ammonium nitrate (34.5% N) application at 400, 140 and 200 kg ha-1, respectively. Leaf extracts of Aloe barbadensis Miller, A. ferox M., and A. broomii at concentrations of 10 g/L (low), 20 g/L (moderate) and 30 g/L (high) were combined with three inorganic fertilizer application rates (25%, 50% and 75% of normal farmer practice). The results showed that foliar application of aloe leaf extracts at moderate concentrations and fertilization reduced pest-related leaf damage by 60% relative to normal farmer practice. Furthermore, reduction of inorganic fertilizer by 25%-75% in combination with aloe leaf extracts achieved the same yield as normal farmer practice. The findings of this study highlight the potential of aloe leaf extract–based biostimulants, rich in bioactive compounds and nutrient-associated constituents, to sustain tomato yield and enhance resilience to biotic stress. Further studies should focus on optimising aloe leaf extracts in sustainable nutrient pest management in tomato production.
Increasing Flavonoid Content of Red Beet (Beta vulgaris L.) through Providing Shade and Potassium Pasaribu, Enita; Udayana, Cicik
Plantropica: Journal of Agricultural Science Vol. 11 No. 1 (2026): Februari
Publisher : Department of Agronomy, Faculty of Agriculture, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpt.2026.011.1.9

Abstract

Application of potassium and intensity of sunlight might affect flavonoid content on the red beet. This research aims to determine optimal shade density and potassium dosage to enhance the flavonoid content on red beet. The research was conducted in Temas Village, Batu, East Java, at an altitude of 790 meters above sea level, with an average temperature of 22.25oC and humidity ranging from 77% to 95%. The research used a split plot design with two factors: shade percentage (25%, 50%, 75%) and potassium dosage (48 kg ha-1, 96 kg ha-1, 144 kg ha-1) by repeating three times. Result of the research showed an application of 75% shade and 96 kg ha- 1 potassium produced higher flavonoid content compared to other treatments. The highest biomass dry above the ground and fresh tuber weight were obtained with 25% of shade. Meanwhile, biomass dry above the ground and fresh tuber weight were higher with the application of 96 kg ha-1 potassium.
Effect of Goat Manure and on Plant Growth Promoting Rhizobacteria (PGPR) Growth and Yield of Sweet Corn (Zea mays saccharata Sturt .) Plants Siahaan, Krisdayanti
Plantropica: Journal of Agricultural Science Vol. 6 No. 2 (2021)
Publisher : Department of Agronomy, Faculty of Agriculture, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpt.2021.006.2.10

Abstract

Sweet corn (Zea mays saccharata Sturt) is a food crop that is great demand by Indonesians because has  sweeter taste than ordinary corn and has shorter harvest time. 2012, sweet corn production was 19,377,030 tons, while in 2013 was 18,506,287 tons and in 2014 reached 18,548,872.00 tons with harvest area 3,786,376.00 ha. This shows the national maize production still not sufficient for market needs. Techniques for improving sweet corn cultivation can be done providing PGPR and goat manure. The role of PGPR in plant growth also assisted by the presenoe of goat manure, where goat manure is organic material that functions as a provider of nutrients and nutrients for PGPR so that the microorganisms in PGPR are able to survive in the environment. Goat manure is type of manure that contains lots of organic compounds. Soil organic matter can help improve soil physical, biological and chemical properties. Goat manure is friendly to the environment, abundant availability can reduce production costs and increase production through improved soil structure. This study used a randomized block design (RBD) consisting of 9 treatment combinations with 3 replications. Growth parameters include plant height, number of leaves, leaf area and plant dry weight. Yield parameters include fresh weight of cob, fresh weight cob without husk, cob length, cob diameter, sugar content and corn yield per hectare. The combination of goat manure 10 ton ha-1+PGPR 5 ml/L can increase 32.70% yield per hectare, namely 13.88 tonnes ha-1 compared to the control treatment which is 9.33 tonnes ha-1.
Respon Mutu Benih Induk Jagung BISI 228 terhadap Perlakuan Perendaman Unsur Besi (Fe) dan Seng (Zn) Santoso, Hendy Rahmat; Sebayang, Husni Thamrin; Hariyono, Didik
Plantropica: Journal of Agricultural Science Vol. 11 No. 2 (2026): Agustus
Publisher : Department of Agronomy, Faculty of Agriculture, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpt.2026.011.2.4

Abstract

Mutu benih induk akan berpengaruh terhadap mutu benih hibrida yang dihasilkan.Salah satu upaya peningkatan mutu benih induk adalah dengan perendaman Fe dan Zn. Tujuan percobaan ini untuk meningkatkan indeks vigor, kecepatan tumbuh, daya berkecambah, biomassa, dan daya tumbuh benih. Percobaan ini menggunakan rancangan acak kelompok dengan 3 ulangan. Benih induk jantan dan betina direndam dengan larutan FeEDTA (1.000 ppm, 1.500 ppm, dan 2.000 ppm), ZnEDTA (1.000 ppm, 1.500 ppm, dan 2.000 ppm), dan kombinasi keduanya serta kontrol (direndam akuades) selama 24 jam. Analisis korelasi digunakan untuk melihat hubungan antar peubah-peubah tersebut. Hasilnya, perendaman FeEDTA, ZnEDTA ataupun kombinasi keduanya pada benih induk tidak meningkatkan mutu benih dibandingkan kontrol. Mutu benih sebagian besar perlakuan tidak berbeda nyata dibandingkan kontrol dan bahkan sebagian lebih rendah. Pada galur betina, hanya satu perlakuan dimana daya tumbuh lebih rendah dari kontrol yaitu perendaman dengan larutan kombinasi FeEDTA 1.000 ppm + ZnEDTA 2.000 ppm sebesar 51,85% sedangkan kontrol 76,05%. Daya tumbuh induk jantan serupa dengan induk betina, sebagian besar perlakuan perendaman tidak meningkatkan daya tumbuh dimana tertinggi didapatkan dengan perlakuan perendaman ZnEDTA 1.000 ppm (P4) yaitu 63,03%, namun tidak berbeda nyata dengan kontrol (60,98%). Hubungan antar peubah juga tidak berkorelasi nyata antara daya tumbuh dan vigor benih di pengujian laboratorium. Vigor benih (indeks vigor dan kecepatan tumbuh) berkorelasi sangat nyata dengan daya berkecambah (berkisar 0,85-0,96%). Percobaan ini belum berhasil meningkatkan mutu benih dengan perendaman Fe dan Zn. Konsentrasi mikronutrien yang diduga terlalu tinggi menjadi hal yang perlu dievaluasi dalam penelitian ini.
Respon Pertumbuhan dan Pembungaan Tanaman Krisan Pot Tipe Spray (Dendranthema grandiflora Tzvelev) pada Perbedaan Waktu Pinching dan Lama Penyinaran Tambahan Saifudin, Muhamad Fafa Haika; Sasmita, Ellen Rosyelina
Plantropica: Journal of Agricultural Science Vol. 11 No. 2 (2026): Agustus
Publisher : Department of Agronomy, Faculty of Agriculture, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpt.2026.011.2.3

Abstract

Tanaman krisan (Dendranthema grandiflora Tzvelev) merupakan tanaman hias pot dan juga bunga potong. Permasalahan yang terjadi di lapangan yaitu krisan pot yang diproduksi sulit menumbuhkan bunga yang mekar secara kompak. Untuk mengatasi hal tersebut dapat dilakukan pinching dan lama penyinaran tambahan. Penelitian bertujuan untuk mengetahui waktu pinching dan lama penyinaran tambahan yang paling tepat untuk pertumbuhan dan pembungaan krisan. Rancangan yang digunakan adalah Split Plot Design dengan tiga kali ulangan. Petak utama (main plot) yaitu lama penyinaran tambahan dengan taraf 3, 4, dan 5 jam. Anak petak (sub plot) yaitu waktu pinching dengan taraf 6, 10, dan 14 hari setelah tanam (HST). Data dianalisis menggunakan Analysis of Variance (ANOVA) taraf 5% dan uji lanjut Duncan’s Multiple Range Test (DMRT) taraf 5%. Hasil penelitian menunjukkan terdapat interaksi antara perlakuan lama penyinaran tambahan dan waktu pinching terhadap diameter bunga. Kombinasi terbaik adalah lama penyinaran tambahan 4 jam dan waktu pinching 10 HST. Perlakuan waktu pinching 14 HST memberikan hasil tinggi tanaman tertinggi pada umur 28 dan 35 HST, jumlah daun terbanyak pada umur 28 dan 35 HST, jumlah cabang produktif terbanyak, jumlah bunga per tanaman terbanyak, diameter rumpun bunga terlebar, dan panjang tangkai terpanjang. Perlakuan lama penyinaran tambahan 4 jam memberikan hasil hari muncul bunga tercepat, jumlah bunga per tanaman terbanyak, dan diameter rumpun bunga terlebar.
Evaluation of Seed Formation Ability Using Bolting Technique on Introduced Broccoli (Brassica oleracea L.) Plant Lines Nusantara, Elang Timur; Soetopo, Lita; Yulianah, Izmi; Arif, Alfiyan
Plantropica: Journal of Agricultural Science Vol. 11 No. 2 (2026): Agustus
Publisher : Department of Agronomy, Faculty of Agriculture, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpt.2026.011.2.2

Abstract

Broccoli is a horticultural plant widely cultivated by farmers in Indonesia. Broccoli is a plant that have great demand by the Indonesian people. Efforts that can be made to meet market needs are by forming new superior varieties and introducing new varieties that are resistant and have high yields. This research studying and evaluating seed formation ability using the bolting technique on several introduced broccoli lines and superior broccoli varieties. Research conducted from July to September 2024 in Sumber Brantas Village, Batu City, Malang, East Java. The study used a randomized block design. This study consisted of 8 treatments with 6 introduced broccoli lines and 2 superior varieties with 3 replications. Based on the results of the analysis of variance, 15 of the 17 observation variables showed significantly different results. BB101, BB102, and BB103 have more potential advantages than other lines. The ability to form seeds in lines BB101, BB102, BB103, BB104, BB105, Green Magic has an average of 64,44%. BB106 and Lucky cannot form seeds. BB101, BB102, and BB103 lines have more potential advantages compared to other lines. Adaptation tests need to be carried out to determine the ability of seed formation using the bolting technique on each line, especially on the BB106 line in places with different environments.
Effect of NPS and Nitrogen Rates on Yield and Yield Components of Teff[Eragrostis tef (Zucc.) Trotter] under Lime Treated Soils in Western Ethiopia Guddisa, Bodena; Feyisa, Hailu; Gerema, Geleta; Tola, Meseret
Plantropica: Journal of Agricultural Science Vol. 11 No. 2 (2026): Agustus
Publisher : Department of Agronomy, Faculty of Agriculture, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpt.2026.011.2.7

Abstract

Teff is the most significant crop among the cereal crops, but its production is constrained by biotic and abiotic factors, in which acidic soil is the major challenge. A field experiment was conducted from the 2020-2022 season at Gedo, Shambu, and Arjo locations. The experiment was conducted to evaluate and identify NPS and nitrogen rates that increase the yield and to determine an economically feasible level of NPS and Nitrogen fertilizer rates for the growth and yield of teff in Western Oromia, Ethiopia. The experiment consisted of twelve factorially combined treatments with four NPS (0, 50, 100, and 150 kg ha-1) and three Nitrogen (0, 23, and 46 kg ha-1) rates. A randomized complete block design with three replications was used to set up the experiment. The main effects of NPS and Nitrogen (N) rates had a highly significant difference (p<0.01) on days to heading, plant height, panicle length, and number of effective tillers. The main and interaction effects of NPS and nitrogen rates at all locations showed a highly significant (p<0.01) difference in grain yield and aboveground biomass but significantly influenced the harvest index by their interaction only. The combination of 150 NPS and 46 kg ha-1 rates on the Dursi variety gave a grain yield (1506.40 kg ha-1) with the net benefit (58551.49 birr ha-1) and MRR (3211.86%) being an economic alternative to the other treatments. Therefore, it is advisable to use a combination of 150 NPS and 46 kg N ha-1 rates for the Dursi variety in the study area, as it is economically viable for the farmers. However, further research is expected to discover the level at which it showed a turning point.
Growth and Yield Response of Tomato Plants (Solanum lycopersicum L.) to the Application of Liquid Organic Fertilizer and Plant Growth Promoting Rhizobacteria Restanti, Nur Azizah; Tyasmoro, Setyono Yudo
Plantropica: Journal of Agricultural Science Vol. 11 No. 2 (2026): Agustus
Publisher : Department of Agronomy, Faculty of Agriculture, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpt.2026.011.2.5

Abstract

Tomatoes (Solanum lycopersicum L.) are horticultural plants from the Solanaceae family that contain protein, carbohydrates, calcium, phosphate, iron, fat, and vitamins. Tomato production in Indonesia has declined due to the lack of nutrients absorbed by tomato plants. Efforts that can be made include the application of Liquid Organic Fertilizer (LOF) and Plant Growth Promoting Rhizobacteria (PGPR). This study was conducted to examine the interaction between LOF and PGPR and to determine the appropriate concentrations of LOF and PGPR for tomato plant growth and yield. The research was conducted from February to June 2025 in Ampeldento Village, Karangploso District, Malang Regency. The design used was a Factorial Randomized Group Design (FRGD) consisting of two treatment factors, namely LOF and PGPR. The LOF factor consisted of 4 treatment levels and the PGPR consisted of 3 treatment levels. Each treatment was repeated 3 times, resulting in 36 experimental units. If there was a significant effect, it was followed by a Honest Significant Difference (HSD) at the 5% level. The results showed that there was an interaction between the application of LOF concentration and PGPR concentration on the growth and yield parameters of tomato plants. The combination of 30 ml L-1 LOF and 40 ml L-1 PGPR produced higher average plant height, number of leaves, leaf area,fresh weight, dry weight, crop growth rate, total number of fruits per plant, fruit weight per plant, and fruit weight per hectare, so that combination is the appropriate treatment to support tomato plant growth and yield.
Pengaruh Posisi Kanopi dan Umur Tanaman Terhadap Distribusi Kandungan Klorida pada Tembakau Madura Lahan Kering (Nicotiana tabacum L.) Varietas Prancak 95 Sudariyanti, Citra Okta; Pranowo, Dodyk; Setyawan, Hendrix Yulis; Prabowo, Heri
Plantropica: Journal of Agricultural Science Vol. 11 No. 2 (2026): Agustus
Publisher : Department of Agronomy, Faculty of Agriculture, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpt.2026.011.2.8

Abstract

Klorida merupakan salah satu komponen kimia yang memengaruhi mutu daun tembakau, terutama sifat pembakaran dan keseragaman kualitas hasil panen pada budidaya lahan kering. Penelitian ini bertujuan menganalisis distribusi klorida pada daun tembakau madura varietas Prancak 95 berdasarkan umur tanaman dan posisi kanopi. Percobaan disusun menggunakan Rancangan Acak Lengkap pola faktorial dengan dua faktor, yaitu umur tanaman 25, 40, 55, 70, dan 85 hari setelah tanam serta posisi daun pada kanopi bawah, tengah, dan atas, masing-masing dengan tiga ulangan. Sampel daun dikeringkan, diabukan kering dengan penambahan CaO, kemudian kandungan klorida ditetapkan menggunakan titrasi argentometri dan dinyatakan dalam mg g-1 bahan kering. Laju perubahan konsentrasi klorida antarwaktu juga dihitung untuk menggambarkan dinamika akumulasi selama pertumbuhan. Hasil penelitian menunjukkan bahwa rerata kandungan klorida cenderung menurun seiring bertambahnya umur tanaman, dari 0,96 menjadi 0,72 mg g-1 bahan kering. Namun demikian, pola distribusi vertikal dalam tajuk tampak lebih konsisten, dengan daun bawah selalu memiliki kandungan klorida tertinggi, diikuti daun tengah dan daun atas. Laju perubahan yang umumnya bernilai negatif menunjukkan adanya pengenceran konsentrasi selama pertumbuhan. Hasil ini menegaskan bahwa posisi kanopi merupakan faktor utama yang menentukan heterogenitas klorida daun, sehingga panen dan sortasi berdasarkan posisi daun berpotensi mendukung keseragaman mutu tembakau.
Improvement of Tomato Physiological Performance, Growth, and Yield Formation Under Salinity Stress Through Photosynthetic Bacteria Application Christanto, Victor Satrio; Avianto, Yovi; Susila, Wisnu Adhi; Sari, Nur Kartika
Plantropica: Journal of Agricultural Science Vol. 11 No. 2 (2026): Agustus
Publisher : Department of Agronomy, Faculty of Agriculture, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jpt.2026.011.2.1

Abstract

Tomato production is frequently constrained by salinity because salt stress restricts water uptake, chlorophyll maintenance, biomass formation, and yield. This study evaluated the effectiveness of the photosynthetic bacterium Rhodobacter sphaeroides BCK1 in improving tomato growth and physiological performance under salinity stress. A 3 × 3 factorial experiment combining three NaCl concentrations (0, 3.000, and 6.000 ppm) and three bacterial suspension doses (0, 10, and 20 ml L-1) was arranged in a completely randomized design with five replicates, resulting in 45 experimental units. Growth, biomass, yield, leaf greenness, relative water content, net assimilation rate, and relative growth rate were evaluated. Salinity significantly reduced most growth, yield, and physiological traits, whereas bacterial application improved these parameters. At 6.000 ppm NaCl, the application of 20 ml L-1 R. sphaeroides BCK1 increased leaf area by approximately 45%, root dry weight by 64%, fruit number by 55%, total fruit weight by 94%, and relative growth rate by 6,5% compared with uninoculated plants exposed to the same salinity level. Net assimilation rate was not significantly affected by salinity (P = 0,337) but increased with bacterial dose (P = 0,0096). The strongest overall response was obtained at 20 ml L-1, indicating that R. sphaeroides BCK1 can partially alleviate salinity-induced reductions in tomato growth and productivity.

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