Plant Medium Research Articles

An efficient in vitro organogenesis protocol for the endangered relic tree species Bretschneidera sinensis and genetic fidelity assessment using DNA markers.

Bretschneidera sinensis is a monotypic species of rare and tertiary relic trees mainly distributed in China. B. sinensis is a potentially valuable horticultural plant, which has significant ornamental and research value, and is a crucial tool for the study of phylogeography. The artificial cultivation of B. sinensis is of great scientific value and practical significance. In this study, we developed a direct organogenesis process of B. sinensis using mature zygotic embryos as initial materials. The highest sterile germination induction (54.5%) from the mature zygotic embryo was obtained in a Murashige and Skoog (MS) medium with 2.0 mg·L-1 6-benzylaminopurine (6-BA) and 0.2 mg·L-1 α-naphthaleneacetic acid (NAA). The highest percentage of shoot regeneration (90.37%) was attained using 1.0 mg·L-1 6-BA and 0.01 mg·L-1 NAA in the MS medium. The Woody Plant Medium (WPM) had the greatest adventitious shoot elongation rate of 93.33%. The most optimized rooting rate was 88.89% in a half-strength MS medium containing 2.0 mg·L-1 indole-3-butyric acid (IBA) and 1.0 mg·L-1 NAA. The genetic fidelity of in vitro regenerated plantlets was assessed using inter-simple sequence repeats and random amplified polymorphic DNA molecular markers, confirming the genetic uniformity and stability of regenerated B. sinensis plantlets. Our research presents an effective in vitro propagation system for B. sinensis, laying the groundwork for its germplasm conservation and large-scale production while maintaining high genetic integrity.

Stem Cutting Propagation and Micropropagation of Northern Bayberry

Northern bayberry [Morella (formerly Myrica) pensylvanica] is an attractive, adaptable, semievergreen, northeastern North American native shrub that is sought for landscaping but difficult to propagate clonally. The impact of timing (June, July, or August) and concentration of indole-3-butyric acid [IBA (0, 2000, 4000 or 8000 ppm)] on propagation by stem cuttings was evaluated for genotypes of northern bayberry including the female cultivars Bobzam (Bobbee™) and UConn Compact and an unnamed male. Medium formulation and cytokinin type were evaluated for micropropagation of ‘Bobzam’ and ‘UConn Compact’. Stem cuttings of ‘Bobzam’ and ‘UConn Compact’ rooted poorly (at ≤55% and ≤20%, respectively) at all timings and concentrations of IBA; however, rooting success of ≥85% was achieved for the unnamed male genotype when cuttings were taken in June. Micropropagation of ‘Bobzam’ was successful using Woody Plant medium with 4 mg·L−1 zeatin and explants taken from shoots that had expanded 12 to 18 cm on containerized stock plants. Initiated explants of ‘Bobzam’ required eight subcultures before they began to produce shoots consistently at a 2× multiplication rate and eventually reached a 3× multiplication rate. Micropropagation attempts using Murashige and Skoog medium, the cytokinins 6-benzylaminopurine, meta-topolin, and thidiazuron, or the cultivar ‘UConn Compact’ were unsuccessful. Microshoots of ‘Bobzam’ rooted at ≥80% either by in vitro prerooting or ex vitro rooting directly in trays. Rooted microcuttings easily acclimated to greenhouse conditions and grew rapidly when potted to 1.04-L containers and then into 5.68-L containers. The micropropagation protocol developed for ‘Bobzam’ can be used by propagators to expand production of this popular female cultivar.

Potensi Tanaman Sangitan (Sambucus javanica) sebagai Fitoremediator Tanah Tercemar Logam Berat Zn dari Air Limbah Industri Pelapisan Logam

Phytoremediation is an alternative biological treatment that can be used to reduce soil or water pollutants. Phytoremediation has the advantage of environmentally friendly waste products and a lower budget compared to physical and chemical processes. In addition, phytoremediation has the weakness of long contaminant absorption times, and quite a few plants that are used as phytoremediation agents die because they are unable to survive the high concentrations of heavy metals contained in polluted media. This study aims to determine the ability of the S. javanica (S. javanica) plant as a phytoremediator for soil contaminated with the heavy metal Zn from industrial wastewater. Phytoremediation lasted for 10 days by contacting artificial Zn wastewater with a concentration of 5 mg/L and as much as 50 ml/day on the test plants. The planting medium used was 100% soil (A1) and 50% homogenized soil with 50% manure (A2). Tests were carried out on each part of the plant and growing medium with contact times of 0, 5, and 10 days of phytoremediation. The plant used as a phytoremediator is Sangitan (S. javanica). The optimum contact time in this study occurred on the 10th day of phytoremediation, and the addition of a 50% dose of organic matter in manure had an effect on the concentration of the heavy metal Zn. The accumulation of heavy metal Zn in plant leaves was greater than in roots, with an average BCF of 0.694 for leaves and 0.308 for roots. While the TF value > 1 represents that the Sangitan plant (S. javanica) has the potential to be a phytoremediator and has a high ability to translocate the heavy metal Zn.

PERTUMBUHAN DAN PRODUKSI MICROGREENS PAKCOY PADA JENIS MEDIA TANAM DAN PUPUK ORGANIK CAIR URIN SAPI

This research aims to determine the effect of the type of planting media and the dose of cow urine liquid organic fertilizer on the growth of pak choy microgreens. This research was structured using a factorial Randomized Group Design (RAK). The first factor is that the planting media consists of 3 levels, namely: M1 (cocopeat), M2 (husk charcoal) and M3 (cocopeat+husk charcoal). The second factor is the dose of liquid organic fertilizer from cow urine consisting of 2 levels, namely a dose of 25 ml/L (D1), a dose of 50 ml/L (D2) and a control using water (D0). The parameters observed were the time when germination began (days), the time when cotyledons emerged (days), the time when the percentage of germination reached 100% (days) and the fresh weight (gr). The research results showed that the best medium for the emergence of sprouts was a medium consisting of a mixture of cocopeat and husk charcoal with a germination time of 1 day after sowing (HSS), the best medium for the emergence of cotyledons was husk charcoal, namely 2 HSS. Application of liquid organic fertilizer doses of 25 and 50 ml per liter resulted in a sprout percentage of 100% at HSS age. The use of liquid organic fertilizer is not recommended on cocopeat media. The use of cow urine doses of 25 ml and 50 ml is recommended for husk charcoal media and mixed media of husk charcoal and cocopeat.

Ecosystem Design Controlling Automatic Watering and Fertilization Based on Scheduling According to Fertilization Recommendations

Soil is a growing medium for plants because it contains minerals needed for plants to grow and develop. The availability of minerals in the soil can gradually decrease and have an impact on plant development. Providing fertilizer to meet the nutrient needs of plants is still carried out at doses that have not been scientifically proven, which can have an adverse impact on plant growth. In the research, the system was designed with two setting modes for watering and fertilizing, namely automatic or manual. Automatic mode utilizes Internet of Things (IoT) technology as a remote control via website applications and mobile apps. Watering and fertilization controls are automatically adjusted based on scheduling on the website and mobile apps or manually according to the user's wishes, facilitated by fertilizer recommendations according to soil and plant type. This recommendation is obtained through the analysis of data sets such as soil type and plant characteristics, which are stored in the cloud via a website application to help farmers fertilize according to the plants they cultivate.

Characterization and functional analysis of gerbera plant defensin (PDF) genes reveal the role of GhPDF2.4 in defense against the root rot pathogen Phytophthora cryptogea

Gerbera (Gerbera hybrida), a major fresh cut flower crop, is very susceptible to root rot disease. Although plant defensins (PDFs), a major group of plant antimicrobial peptides, display broad-spectrum antifungal and antibacterial activities, PDF genes in gerbera have not been systematically characterized. Here, we identified and cloned nine PDF genes from gerbera and divided them into two classes based on phylogenetic analysis. Most Class I GhPDF genes were highly expressed in petioles, whereas all Class II GhPDF genes were highly expressed in roots. Phytophthora cryptogea inoculation strongly upregulated all Class II GhPDF genes in roots and upregulated all Class I GhPDF genes in petioles. Transient overexpression of GhPDF1.5 and GhPDF2.4 inhibited P. cryptogea infection in tobacco (Nicotiana benthamiana) leaves. Transient overexpression of GhPDF2.4, but not GhPDF1.5, significantly upregulated ACO and LOX gene expression in tobacco leaves, indicating that overexpressing GhPDF2.4 activated the jasmonic acid/ethylene defense pathway and that the two types of GhPDFs have different modes of action. Prokaryotically expressed recombinant GhPDF2.4 inhibited mycelial growth and delayed the hyphal swelling of P. cryptogea, in vitro, indicating that GhPDF2.4 is a morphogenetic defensin. Moreover, the addition of GhPDF2.4 to plant culture medium alleviated the root rot symptoms of in vitro-grown gerbera seedlings and greatly reduced pathogen titer in P. cryptogea-inoculated gerbera roots in the early stages of treatment. Our study provides a basis for the use of GhPDFs, especially GhPDF2.4, for controlling root rot disease in gerbera.

Study of geotropism versus hydrotropism in green bean radicles (Vigna radiata L.) by Oblique Olfactometer method

Plants respond to external stimuli which often involve constant movement of the plant. The movement of plant organs in response to external stimuli is responsible for the production of energy sources. Research on the nature of the radicle tropics aims to find out whether the roots actually grow downwards due to geotropism or hydrotropism. The mung bean species (Vigna radiata L.) is used because the germination process of this species does not require a long time and the seeds of this species are suitable for growing on olfactometer planting media and are suitable for growing in the climatic and geographical conditions in Indonesia. The method chosen in this research is the tilted olfactometer method, which is a planting method carried out using an aquarium hose and olfactometer connector which is tilted 30 degrees because this research aims to see the direction of growth of the radicles of mung beans (Vigna radiata L.) so this method was chosen; because the seeds can be positioned in the three-pronged olfactometer at an angle so that the final growth results can be distinguished between the tendency of the geotropism factor or the hydrotropism factor. It is proved that radicles tips would growth upward to wet cotton, against the geotropic effect.

Analysis of the Impact of Black Tea Waste on The Fertility Quality of Rainbow Chili Plants (Capsicum annum L.)

Black tea is a drink commonly consumed in Indonesia, so it is not uncommon for dregs to be found to be wasteful. Waste is a serious problem that, if not handled properly, will have specific environmental impacts. Many people use tea waste as fertilizer without knowing the danger it causes to plants without further processing. This research aimed to analyze the effects of black tea waste on the fertility quality of rainbow chili plants (Capsicum annum L.). The type of research is qualitative research. The method used in this research is qualitative observation to observe the maximum height, the time to reach the maximum height, the entire leaf width, the time when the first flower appears, the time when the first fruit appears when the first fruit matures, the length of the first fruit, and the middle circumference of the first fruit of the rainbow chili plants (Capsicum annum L.) which were planted in potting soil given black tea waste with different ratio. From all the parameters observed, it was found that the best quality of rainbow chili plants (Capsicum annum L.) was in potting soil with a definite ratio of not too much but also not too little. From this fact, black tea waste can fertilize plants, but with a specific maximum level limit. Excessive amounts of tea waste can trigger alkalinity in the soil, which reduces plant fertility, and the presence of active substances such as polyphenols in it can kill decomposing bacteria, which causes new problems for the soil. Further research is still needed, especially in overcoming alkalinity and the content of active substances that can kill decomposing bacteria in the soil in black tea waste before it can be made into a commercial product like planting medium.

Microgreen as a Minimalist Vegetable Cultivation Innovation in Supporting Food Security Family in Urban Areas

Microgreen is a small vegetable or young edible plant with a soft texture. The purpose of this paper is to find out microgreen can be a solution in providing vegetable food in urban areas and to find out the content contained. The method used is literature review which is a reference to understand the research conducted by searching by reading various sources of books, journals, and other publications. The results of this writing microgreen does not require large areas of land for production, simple planting media. The advantages of microgreen include very easy maintenance, saving space, saving time and saving energy. The nutritional content contained in microgreen is at least 4-10 times more than that of vegetables in general.

KOMPOSISI MEDIAi TANAM DAN DOSIS PUPUK NPK TERHADAP TUMBUHAN DAN HASIL TANAMAN TERUNG (Solanum melongena L.)

Eggplant is a horticultural crop that is very important for society. One effort to increase production is by providing soil, manure and NPK fertilizer. This research aims to determine the effect of planting media and NPK fertilizer on the growth and yield of eggplant (Solanum melongena L.) variety Mustang F1. This research was conducted in Krajan Hamlet, Kebonsari Village, Kademangan District, Blitar Regency, East Java Province in February-April 2023. The research was prepared using (RAK) factorial with two factors, namely the composition of the planting media (M) and the dose of NPK fertilizer (D). Each treatment had 3 repetitions. Observations will be carried out after 10 days after planting, with an observation interval of 20 days, the observation parameters include plant height, stem base diameter, fruit diameter, and fruit weight. The research results showed that the combination treatment between the composition of the planting media and the dose of NPK fertilizer had a significant effect on plant height, stem base diameter, fruit diameter and fruit weight.

PENGARUH MEDIA TANAM DAN PUPUK ORGANIK CAIR BONGGOL PISANG (Musa sp.) TERHADAP PERTUMBUHAN DAN HASIL TANAMAN BAWANG MERAH ( Allium cepa L.)

Shallots are a horticultural crop that is very important for society. One effort to increase production is by providing Banana Weevil POC. This research aims to determine the effect of planting media and liquid organic fertilizer from banana weevil (Musa sp.) on the growth and yield of local varieties of shallot plants (Allium cepa L.). This research was carried out on residential land located at Bendorejo Hamlet, Bendosewu Village, Talun District, Blitar Regency. In April-June 2023. The research was prepared using (RAK) factorial with two factors, namely the composition of the planting media (M) and the concentration of Banana Weevil POC (D), with each treatment having 3 replications. Observations were made after the plants were 7 days after planting, with an observation interval of 14 days. The observation parameters include plant height, number of leaves, number of tubers, and tuber weight. The results of the research showed that the combination treatment of cow dung and Banana Weevil POC with a concentration of 10 ml had a significant effect on plant height, number of tubers and tuber weight. However, it has no effect on the number of leaves.

Analisis Serapan Hara N, P dan K Jaringan Cabai (Capsicum sp.) pada Variasi Tingkat Kemasaman Tanah

This research tested the effect of soil acidity level on the uptake of macro elements in plant tissue. This research is a type of experimental research that examines the effect of soil acidification levels on the absorption of N, P, and K nutrients in chili plant tissues. This research was conducted on the greenhouse experimental land of the Sambas State Polytechnic, Sambas Regency, West Kalimantan. This activity is carried out from March to October 2022. The research design used a descriptive analysize with three treatments, namely pH = 6 (P1), pH = 7 (P2), and pH = 8 (P3) which were repeated as many as 3 tests. Each treatment consisted of 30 plants planted in a planting medium mixed with soil, burnt husks and animal dung. N, P and K uptake is obtained through the analysis of the covering of stem and leaf tissues. The results showed that the difference in the level of acidification of the growing media did not have a effect on the level of absorption of nitrogen and phosphorus, but level of acidification have effect in potassium absorption in chili plants. Nitrogen content generally decreases in plant tissue samples aged 30 to 45 days after planting, while in plants aged 45 to 50 days after planting, there is enerally an increase in the accumulation of nitrogen in plant tissues. Absorption of phosphorus elements in tissues fluctuates over a period of 30 to 60 days after planting. The phosphorus content found in leaf tissue treatment pH 6 and pH 7 increased from the observation period of 30 to 60 days after planting. Absorption of potassium elements in tissues fluctuates over a period of 30 to 60 days after planting. An increase in Potassium content in stem and leaf tissues occurred in pH 6 treatment samples. Key words : chili, nitrogen, phosphor, potassium, uptake

Budidaya Tanaman Hortikultura dan Lumbung Pangan dalam Upaya Pemanfaatan Lahan Pekarangan di Kelurahan Klitren Yogyakarta

One of the characteristics of urban areas is the increasingly limited land that can be used for plant cultivation. Only now, a lot of yard land has yet to be utilized optimally, especially for cultivating vegetables. Klitren Village, in the center of Yogyakarta City, has community-owned yard land that can be used even though the area is limited. This service activity aims to maximize the use of yard land for cultivating vegetable plants, herbal gardens, and food storage. This service activity was carried out in Klitren Village at the Asoka Farming Women's Group (FWG) in July 2022. The service activity was attended by 81 people who were a combination of women members of Asoka's FWG, the Village Head of Klitren Village, Village Agricultural Extension Officers, Lecturers, Students, Research and Community Service Units, and the Klitren Village community from various. The service is carried out through several activities, including making planting media for cultivating vegetable plants, arranging herbal gardens, and providing food barns. 100% of the evaluation results stated that the activity participants knew how to make planting media and food storage. In comparison, 66.7% said they knew how to organize and maintain an herbal garden. 66.7% of the participant's responses to the activities indicated that they were helpful and hoped they could be sustainable and improved.

Response in Growth Geronggang (Cratoxylon arborescens Vahl. Blume) Seddling by Giving Chicken Manure

One potential plant species for restoration in peat swamp forests is Cratoxylon arborescens. A well-managed nursery includes the application of chicken manure. This study aims to determine the effect and best dose of chicken manure fertilizer on the growth of Cratoxylon arborescens seedlings on peat planting media. This research used RAL (Completely Randomized Design) experimental method, which consisted of 4 treatments (P0 = control, P1 = 10% chicken manure + 90% peat, P2 = 30% chicken manure + 70% peat and P3 = 50% chicken manure + 50% peat) with 5 replications. The data obtained were analyzed statistically using variance analysis, followed by Duncan's New Multiple Range Test (DNMRT) at the 5% level. The results showed that chicken manure had a significant effect on the growth of Cratoxylon arborescens seedlings, because it was able to increase fertility and nutrient availability, improve the physical, chemical and biological properties of peat. The most effective and best treatment for four-month-old Cratoxylon arborescens seedlings was P2 (30% chicken manure + 70% peat) with 100% survival percentage, average height increase of 14.39 cm, average diameter increase of 1.56 mm, dry weight of 7.41 g and seedling robustness of 8.35

The effect of planting media composition and liquid fertilizer dosage on sand media on the growth of mustard plants (Brassica juncea L.)

The aim of this study is to analyze the potential of sand as a planting medium with the addition of cocopeat, obtain the dose of liquid organic fertilizer for sand media, and find the suitable combination of cocopeat for sand media. The method used is a Complete Randomized Design (CRD) Factorial with 2 factors. The first factor is the combination of planting media (sand and cocopeat) and the second factor is the dose of liquid organic fertilizer. The first factor consists of 3 levels: M1 (sand and cocopeat), M2 (sand and cocopeat mixed), and M3 (cocopeat and sand). Each planting medium has a height of 11 cm. The second factor has 3 levels: P1 (LOF 10 ml/l), P2 (LOF 20 ml/l), and P3 (LOF 30 ml/l). The initial stages carried out in this research include preparing the planting media, seed sowing (for approximately ±16 days), transplanting, and maintenance (watering and fertilization). Observations include monitoring every 3 days (plant height, number of leaves, and leaf width) and final observations (total weight of fresh mustard plants, weight of upper and lower mustard plant parts). The planting media (sand, cocopeat) influenced all parameters. The optimum dose of liquid organic fertilizer is a dose of 30 ml/liter. The most optimal interaction of planting media factors with the dose of liquid organic fertilizer is sand media, cocopeat, and a dose of 30 ml (M1P3) with an average total fresh weight of 4.14 grams. Keywords: Cocopeat, LOF, Planting media, Sand.

The Effect of Different Ratio Combinations of Rice Husk Charcoal: Soil Media and Different NPK Fertilizer Rates on Growth and Fruit Yield of Okra (Abelmoschus esculentus L. Moench)

Okra plant is a vegetable plant that contains many vitamins and minerals that are very good for health. Increased production of okra plants can be done by setting the composition of the media and the provision of NPK fertilizer. The purpose of this study is to determine the influence of the composition of charcoal husk planting media and NPK fertilizer is appropriate for the growth and yield of okra plants. The experiment was carried out in Air Tawar Barat sub-district, North Padang sub-district, Padang City from September to December 2019. This study used a Complete Randomized Design (CRD) factorial with 2 factors. The first factor with the composition of charcoal planting media husks banding soil 0:1, 1;1, 1;2 and 1:3 . and the second factor with NPK fertilizer doses 400kg/ha, 500kg/ha and 600kg/ha repeated 4 times. The observation data is analyzed with the F test at a 5% level, if the F count is greater than the F table then continue with the Duncan New Multiple Range Test (DNMRT) at a real level of 5%. The results of the study showed there is an interaction between the administration of the composition of the planting media of charcoal husks and soil 1:2 and the administration of NPK fertilizer dose 3.0g / polybag to the height of plants, as well as the provision of the composition of planting media affects the lifespan of flowers, the number of flowers, the number of fruit, the length of fruit, the diameter of the fruit and the total weight of the fruit.

Propagación in vitro de Annona deceptrix (westra) H. Rainer (Annonaceae) una especie en peligro de extinción en Ecuador

This work aims to develop a protocol for the in vitro propagation of Annona deceptrix (westra) H. Rainer. In addition, it measures survival in ex-vitro conditions. Nodal shoot segments were used as explants, disinfected with different NaClO concentrations and exposure times, and then precultured in the Murashige and Skoog (MS) basal culture medium. Woody Plant Medium (WPM) was used for the multiplication and rooting phase, with different types and concentrations of phytoregulators. In the establishment phase, the explants responded better with the 1% NaClO treatment for 15 minutes, where the highest survival percentage was observed at 72.04%. For the variable number of shoots and stem diameter, the treatment with BAP (1 mgL-1) + (GA3 0.25 gL-1) + (WPM) reached the best average with a value of 2.00 and 2.35, respectively. Mm, respectively. For root induction, the best response was obtained when 3mgL-1 IBA (T3) was added to the culture medium, reaching an average root length of 5.75 cm after 60 days of culture in the medium. The rooted Vitro plants of an approximate height of 5 cm were brought to the mesh house for their acclimatization; in this phase, the survival rate was evaluated during the first week of acclimatization, and the plant's growth fifteen days after sowing in trays containing a peat-based substrate, where T3 had an average survival of 70% and higher plant height at 60 days, indicating that this treatment promoted faster seedling development under conditions exvitro. Keywords: Annona deceptrix, propagation, in vitro rooting, ex-vitro acclimatization, growth regulators.

Growth and Yield Response of Caisim Plant (Brassica Juncea L.) to Treatment of Growing Media Type and AB Mix Solution Concentration in Floating System Hydroponic Technology

This research aims to determine the effect of AB mix solution and planting media on the growth and yield of caisim (Brassica juncea L.) in a floating hydroponic system. This research was carried out from March 2022 to April 2022 at the CV Green Vest Hydroponic Garden located in Cirebon City, West Java, at an altitude of 4 m above sea level. The research used the Split Plot Design method, the main factor AB mix concentration consisting of 3 levels (10, 14, 18 ml/l) and the second factor as a subplot, namely the planting medium consisting of 3 levels (cocopeat, sawdust, zeolite). Observations were made on plant height, number of leaves, root length, root volume, fresh weight per plant, and fresh weight per plot. The results showed that there was an interaction between the concentration of AB mix and planting media on plant height at 7 DAP, number of leaves at 7, 14, and 21 DAP, root length at 21 DAP, root volume at 14 DAP and 21 DAP, fresh weight per plant, and fresh weight per plot. The AB mix concentration treatment had an independent effect on plant height at 14 and 21 DAP, root length at 7 and 14 DAP, and root volume at 7 DAP. Meanwhile, the planting media treatment had an independent effect on plant height at 14 and 21 DAP, root length at 7 and 14 DAP, and root volume at 7 DAP. The treatment of cocopeat planting media and AB mix concentration of 18 ml/l gave the highest average fresh weight per plot, 4.01 kg.

Education on Garden Land Utilization in Efforts to Prevent Stunting in Padang City

The issue of stunting is a global problem that has become the focus of the government's efforts to address it. Based on observations of the nutritional status of toddlers at Posyandu Harapan Ibu, 6 out of 149 toddlers, ten are experiencing stunting, accounting for approximately 6.71% of the total number of toddlers. An initial survey conducted by the community engagement team among ten mothers with toddlers in the Posyandu Harapan Ibu 6 area revealed that most (80%) of these mothers lack knowledge regarding stunting, its prevention, management, and associated risks. The Mata Air area in Padang City, which is part of Posyandu Harapan Ibu 6, has a relatively high prevalence of stunting. However, the potential of family backyard spaces in this area has yet to be optimally utilized. This community engagement initiative aims to enhance the use of family backyard spaces as a source of nutrition for families to prevent stunting. The method employed involves educating local volunteers about the benefits of family backyard spaces as an alternative source of family food, followed by the distribution of plant seeds and planting media. The results of the outreach activities indicate that (1) participants respond to the outreach activities with enthusiasm and vigor, (2) Participants actively engage and proactively participate in the outreach process, and (3) Participants have initiated the implementation of recommendations by utilizing family backyard spaces as a source of food and nutrition for their families by planting the provided plant seeds. This community engagement effort represents a positive endeavor to prevent stunting in the Mata Air area.

Pengaruh Volume Media Tumbuh Dan EC Nutrisi Terhadap Produktivitas Tanaman Melon (Cucumis melo L.) pada Hidroponik Sumbu

The aim of the research was to study the effect of the volume of growth media and nutrient EC (Electrical Conductivity) on the yield and productivity of melon plants (Cucumis melo L.), using a hydroponic wick system. This study employed a Randomized Complete Design (RCBD) with a factorial arrangement consisting of 2 factors. First factor consisted of a 3 level growth medium volume per pot namely 5 liters (M1), 14 liters (M2), and 34 liters (M3). The second factor was a 4 level nutrient EC, including 1.5 mS/cm (P1), 2.5 mS/cm (P2), 3.5 mS/cm (P3), and 4.5 mS/cm (P4). Each treatment combination used 3 replicates to achieve 36 experimental units. The results showed that the treatment of the 34-liter growth media (M3) yielded high fruit weight of 1.40 kg and the highest water productivity of 37.90 kg/m³. The planting media volume treatment (M) significantly affected parameters namely stem diameter, fruit weight, sweetness level, fruit circumference, and water productivity, but not for other parameters. Meanwhile, the fertilizer EC treatment (P) significantly affected plant height, sweetness level, and fruit circumference, but not for other parameters. If fruit weight is used as the criterion, the optimum choice was M3P1 (34 liter media volume and 1.5 mS/cm EC). Keywords: Electrical Conductivity, Hydroponics, Melon, Rice Husk Charcoal, Wick System.