Growth Of Melon Plants Research Articles

Pengaruh Iklim Mikro dan Penggunaan Media Tanam yang Berbeda pada Pertumbuan Tanaman Melon Varietas Sweet Net

Melon are plants that are sensitive to environmental changes. Currently, developing technology for cultivating melons in greenhouses is used to modify the microclimate for the growth of melon plants. This research aims to determine the effect of microclimate and different types of planting media on growth response of sweet net variety melon plants that planted in the Politeknik Negeri Jember smart green house. The research was carried out in January – May 2024. The treatments tested consisted of two treatments, namely: the use of soil media+compos and cocopeat media which would be repeated 15 times. The parameters observed include microclimate (temperature and humidity) and also plant growth indicators including plant length and number of leaves, number of flowers, and potential weight of melon. The data obtained were analyzed using the T-test. The research results show that the microclimate inside the Politeknik Negeri Jember smart green house is still classified as an optimal microclimate to support the growth of melon plants. Apart from that, the use of cocopeat planting media was able to provide the best results for the length of the melon plants in the 4th to 6th week of observation, but there was no significant difference in the parameters of the number of leaves, number of flowers and potential weight of melon of. The use of cocopeat media and soil media are both good media in supporting the growth of melon plants in a greenhouse.

INDUCTION OF DROUGHT RESISTANCE IN MELON (Cucumis melo L.) M15 WITH HORMOPRIMING BRASSINOSTEROID BASED ON MORFOLOGY, ANATOMY, AND PHYSIOLOGY ASPECTS

Melon productivity in Indonesia has been declining. Global climate change is affecting the productivity of melons. Long-term droughts have contributed to a reduction in plant growth and development. Hormopriming is an alternative to increase the germination and growth of melon plants by soaking seeds in a solution of plant growth regulators. Brassinosteroid can enhance germination and plant tolerance under drought conditions. The objective of this research is to examine the impact of brassinosteroid hormopriming treatment on the germination and growth of melon plants subjected to various degrees of drought stress. The study utilized a two-factor fully randomized design. The brassinosteroid concentrations used were 0, 0.05, 0.10, and 0.15 ppm. Media with different water capacities of 75%, 50%, and 25% Space Capacity (SC) were used to test drought stress resistance. Water capacities were examined using the gravimetric method. This study's findings suggest that treating melon plants with brassinosteroid variations can induce drought resistance in M15 melons. A brassinosteroid concentration of 0.15 ppm is the best concentration, as it can increase all parameters of plant growth and adaptation under each variation of water availability provided. The findings of this study can serve as a reference for melon cultivators constrained by dry land conditions to increase the efficiency of cultivation.

Pengenalan ZPT Alami Untuk Budidaya Melon di Dusun Ngadilegi Desa Plintahan Kec. Pandaan Kab. Pasuruan

This community service activity aims to utilize natural ingredients such as shallots, bamboo shoots, and coconut water as an alternative phytohormone in the growth of melon plants cultivated by partners. The target of the implementation of community service activities is the Madulegi Farmer Group in North Ngadilegi Hamlet. The method used in this activity is in the form of FGD (Focus Group Discussion) which is carried out directly or face-to-face and demonstrates the making of natural growth regulatory substances from shallots, bamboo shoots, and coconut water. The farmers' response was very enthusiastic about the introduction of this natural growth regulator for melon cultivation. Farmers in Ngadilegi Hamlet can understand well about the materials and equipment needed, as well as the process of making and utilizing these natural growth regulatory substances. Through this activity, it is hoped that it can provide an alternative for farmers to utilize natural ggrowth regulatory substances with materials that are easily obtained around and are relatively cheap and safe, so as to increase melon productivity

Native bacteria from the caatinga biome mitigate the effects of drought on melon (Cucumis melo L.)

Plant growth-promoting bacteria (PGPB) from drylands are promising biological resources to mitigate thenegative effects induced by water deficit. The aim of this study was to evaluate the effects of bacteria nativefrom the Caatinga biome on the initial growth of melon plants subjected to water deficit. Nine bacteria (M1.1,T11.2, PH5.2, T11.1, T2.1, T1.1, M7.1, XX6.9 and XX6.6) isolated from Caatinga soils were tested in two varietiesof melons (Cantaloupe and Yellow) cultivated under two water availability scenarios (50% irrigation and 100%irrigation of the crop evapotranspiration - ETc). In the control treatment, no inoculation was performed. Theeffects of the treatments on shoot length (SL), shoot dry mass (SDM), root length (RL) and root dry mass (RDM)were evaluated. In the scenario without water deficit (100% ETc replacement), the isolates PH5.2, T2.2, M7.1,XX6.9 promoted (p<0.05) the root and shoot biomasses in the Cantaloupe variety, while in the Yellow variety,growth promotion was sporadic, with three isolates (M1.1, M7.1 and XX6.9) promoting at least one parameterevaluated. In the scenario with a water deficit (50% ETc replacement), isolates T1.1 and XX6.9 promoted thetotal biomasses (SDM and RDM) of the Cantaloupe and Yellow varieties, respectively. All isolates stimulated RL inthe Cantaloupe variety. Bacteria isolated from the Caatinga promote growth and reduce the effects of waterdeficit in melon and thus are potential inoculants to enhance production in the early stages of melon cultivationin semiarid regions.

Role of an antagonistic bacterium, Bacillus subtilis PE7, in growth promotion of netted melon (Cucumis melo L. var. reticulatus Naud.).

The aim of this study was to determine the plant growth-promoting effect of Bacillus subtilis PE7 on growth of melon plants. B. subtilis PE7 isolated from kimchi was identified based on colonial and microscopic morphology along with analyses of 16S rRNA and pycA gene sequences. Strain PE7 showed different levels of inhibition on phytopathogens and was able to grow at variable temperatures and pH values. Strain PE7 had the ability to produce siderophores, indole-3-acetic acid (IAA), ammonia, exopolysaccharides, and 1-aminocyclopropane-1-carboxylic acid deaminase, as well as solubilize insoluble phosphate and zinc. The IAA secretion of strain PE7 showed a concentration-dependent pattern based on the concentration of l-tryptophan supplemented in the fertilizer-based culture medium. The LC-MS analysis indicates the presence of IAA in the culture filtrate of strain PE7. Treatment of the B. subtilis PE7 culture containing different metabolites, mainly IAA, significantly promoted melon growth in terms of higher growth parameters and greater plant nutrient contents compared to treatments with the culture without IAA, fertilizer, and water. The cells of B. subtilis PE7 attached to and firmly colonized the roots of the bacterized melon plants. Based on our results, B. subtilis PE7 can be utilized as a potential microbial fertilizer to substitute chemical fertilizers in sustainable agriculture.

The potency of soil bacteria on soil phosphorus solubilization and IAA production for innovation on sustainable Melon (Cucumis melo) production through biofilm biofertilizer

To fulfils the demand of melons (Cucumis melo), it requires intensive maintenance by agrochemical products. If this is done continuously, it will lead to soil degradation and disrupt the sustainable food supply. Therefore, an innovation is needed to maintain the sustainable food supply using biofilm biofertilizer technology. This study aims are to determine the potential of bacteria isolated from melon rhizosphere to solubilize phosphate and producing indole acetic acid (IAA) so that it can be developed into biofilm biofertilizer. Soil samples were taken from three melon gardens owned by farmers located in Sragen Regency, Karanganyar Regency and Wonogiri Regency, Central Java. In the laboratory, the soil bacteria then isolated from the soil using the dilution method. The isolates obtained then tested for their ability to solubilize phosphate and produce IAA. Phosphate is an essential nutrient for plant growth and IAA is plant growth promoting. The results showed that the highest phosphate solubilization potential was produced by bacterial isolate SRG 1A with a halo zone ratio of 1.957 and the highest concentration of IAA was produced by bacterial isolate WNG 1B with a value of 6.151 ppm. Based on the ability of the bacteria, indicates that the obtained bacterial isolates have the potential to be developed as a biofilm biofertilizer to help the growth of melon plants because it has the potency to solubilize soil nutrient and produce IAA.

Effect of Exogenous Melatonin on Seed Germination and Seedling Growth in Melon (Cucumis melo L.) Under Salt Stress

An investigation was carried out to evaluate the effect of different application forms and concentrations of melatonin on germination and initial growth of melon plants in several different salinity conditions. We evaluated germination percentage and growth of seedlings and measured total chlorophyll content, relative electrolyte leakage, peroxidase activity, root viability, proline concentration, relative water content, Na+/K+ ratio in green parts and K+ leakage from roots. Seed germination percentage under salt stress increased with treatments of 10 and 50 µmol·L−1 melatonin. Seed treatment and plant watering with melatonin at 50 µmol·L−1 improved growth parameters and plants showed higher chlorophyll content as well as better biochemical parameters than non-treated plants. Results suggest that melatonin can alleviate the effect of salt stress during seed germination and first stages of plant development.

Lithothamnion calcareum Nanoparticles Increase Growth of Melon Plants

The application of alternative fertilizers to the soil in a sustainable way in order to supply nutrients to plants is important for growers and for the environment. Calcareous algae, Lithothamnion calcareum (Lit), is considered an alternative fertilizer because it is rich in nutrients, particularly magnesium and calcium, that are essential for plants. The objective of this study was to investigate the effect of different formulations, doses and fertilization intervals of L. calcareum on growth of melon plants. Two experiments were performed. The first experiment aimed to evaluate the effect of various formulations and doses of Lit on the growth of melon plants. The second experiment was carried out to evaluate the use of formulations and fertilization intervals of Lit. Formulations and doses of Lit had a significant effect on the efficiency in the development of melon plants. No impact was observed when using a concentrated suspension of Lit. However, four applications of Lit nanoparticle formulations every 7 days increased the growth of melon plants at doses close to 1 kg ha-1. We provide the first data related to beneficial effects on melon growth of L. calcareum, in different formulations, application intervals and doses, applied to red-yellow soil.

Control of Fusarium wilt of melon by combined treatment with biocontrol, plant-activating, and soil-alkalizing agents

Fusarium wilt of melon is one of the destructive diseases of melon worldwide. To develop a method to control the soilborne disease Fusarium wilt of melon, we applied various combinations of a crop-protective microbe, a plant activator, and a soil pH increaser during seedling cultivation in preliminary greenhouse tests and chose the crop-protective Fusarium oxysporum strain SL0037, plant activator probenazole (PBZ), and soil-alkalizer slag fertilizer (SFR) for further tests in the field. From 2012 to 2014, the effects of treatment combinations with SL0037, PBZ, and SFR were tested in a field that was amended with the melon wilt pathogen F. oxysporum f. sp. melonis. Although disease incidence varied among the 3 years of the study, the main stem of melon plants was longer than that of the untreated control plants or those treated with one or two of the three agents. Results suggest a combination of SL0037, PBZ, and SFR treatments can be used to control Fusarium wilt of melon and improve growth of melon plants.

Growth and Production of Melon Plant (Cucumis melo L) in Ultisol Soil with Addition of Liquid Organic Fertilizer (LOF) Pineapple Peel

Plant Growth and production of melon is affected by fertilizer so that alternative application of technology can be used liquid organic fertilizer (LOF) from pineapple peel. The purpose of this research is to know the effect ofliquid organic fertilizer on growth and production of melon plants in ultisol soil. Experimental methods used with single factor Randomized Block Design with 7 treatment levels were: inorganic fertilizer, 20 mL / 1 liter of water, 35 mL / 1 liter of water, 50 mL / 1 liter of water, P4 65 mL / 1 liter of water , P5 80 mL / 1 liter of water and 95 mL / 1 liter of water. The results of this study indicate the use of liquid organic fertilizer (LOF) does not gave a real effect on the growth and production of melon plants. Growth of melon plants treated 20 mL / 1 liter of water tend to be better while for production tend to be better at treatment 35 mL / 1 liter water.

Efficacy of Yeast in the Biocontrol of Bacterial Fruit Blotch in Melon Plants

Bacterial fruit blotch (BFB), caused by Acidovorax citrulli, is the most important bacterial disease affecting melon plants in Brazil. The aim of the present study was to analyze the efficacy of yeasts for the biological control of BFB, applied by spraying to protect seedlings, foliage and fruits, and as a seed treatment. Additionally, the in vitro activity of the yeasts and plant growth promotion were evaluated. Among 60 strains, LMA1 (Rhodotorula aurantiaca), CC-2 (Pichia anomala) and LMS (Rhodotorula glutinis) were the most efficient for seedling protection. Among the three selected strains, only LMA1 and CC-2 maintained efficacy when tested on foliage and seeds, with reductions in the disease index and area under the disease progress curve of 58.6 and 47.2 %, respectively. Furthermore, LMA1 and LMS protected fruits. In vitro, neither of the strains inhibited bacterial growth, produced killer toxins, or showed competition for nutrients with the pathogen. None of the three yeasts promoted the growth of melon plants. Therefore, these yeasts have potential for BFB biocontrol in different disease stages and may be used in the integrated management of BFP.

UV-B照射によるアシノワハダニに対する密度抑制効果とメロンの生育への影響

温室メロンのハダニ類防除を目的として株の生育に影響のないUV-B照射条件設定の可能性を検討した。UV-Bの夜間照射（2.16 または 4.32 kJ m-2）と反射シートマルチを組み合わせることにより，アシノワハダニの増殖は 抑制され圃場レベルでの防除効果が確認された。4.32 kJ m-2 照射では葉面積が著しく減少したが，2.16 kJ m-2 照射と反射シートマルチを組み合わせた試験区では無照射区と有意差が認められなかった。以上の結果から，ハダニ防除と植物体の健全な生育を両立したUV-Bの照射条件設定の可能性が示唆された。今後は 2.16 kJ m-2 を基準にして照射条件を更に詳しく検討する必要がある。

Relações fonte: dreno e crescimento vegetativo do meloeiro

Avaliou-se o efeito de diferentes relações fonte:dreno, determinadas a partir de variações da densidade de plantio e do número de frutos/planta, sobre o crescimento vegetativo de plantas de meloeiro. Foram realizados dois experimentos no período de primavera-verão de 2004/2005, em estufa plástica. Em um dos experimentos, 3 densidades de plantio (1,7; 2,4 e 3,0 plantas m-2) e dois números de frutos/planta (3 e 4) foram estudados. No outro experimento estabeleceu-se dois tratamentos: remoção de todos os frutos e três frutos/planta, a fim de avaliar o efeito da ausência de frutos na planta. A partir dos dados de matéria seca e fresca e da área foliar (AF), aos 68 dias após o transplante, foi determinada a produção e a distribuição de matéria seca para a fração vegetativa, bem como o índice de área foliar (IAF), a área foliar específica (AFE) e os teores de matéria seca do caule e das folhas. O aumento da densidade de plantio não incrementou a força de fonte, não alterando o crescimento vegetativo em épocas de alta disponibilidade de radiação solar. A AF alcançada ao final do cultivo foi relativamente baixa, o que diminuiu o efeito de maior sombreamento mútuo e permitiu a penetração de radiação solar no interior do dossel, mesmo em densidades mais elevadas. O aparecimento de um novo fruto compete mais com os frutos remanescentes do que com os órgãos vegetativos. Os frutos competem com as partes vegetativas aéreas indistintamente, ou seja, o caule e as folhas atuam como um órgão único. As plantas de meloeiro se adaptam à baixa demanda de drenos através do acúmulo de fotoassimilados nos órgãos vegetativos.

The effects of NaCl pre-treatments on salt tolerance of melons grown under long-term salinity

The response of melon ( Cucumis melo) plants to long-term salinity was investigated to determine the availability of the NaCl pre-treatments (seed priming + seedling conditioning) as an interesting strategy for increasing the salt tolerance. Seeds of melon cultivars “Hasanbey” and “Kirkagac” were primed with 18 dS m −1 NaCl solution for 3 days at 20 °C. During emergence and seedling growth, non-primed seeds were irrigated with local irrigation water (EC: 0.3 dS m −1) whereas primed groups were treated with 9.0 dS m −1 saline solution for 35 days. Seedlings derived from pre-treated (P) and non-pre-treated (NP) groups were transplanted to 8 l pots. After transplanting, salinity treatments were started with the first irrigation. The salinity treatments consisted of five levels (control, 4.5, 9.0, 13.5 and 18.0 dS m −1) of irrigation solution for a period of 90 days. NaCl pre-treatments diminished the inhibiting effect of salinity on growth of melon plants. However, competence for salt adaptation varied with cultivar and the level of salinity. The physiological response of the P plants was also maintained in the long-term. Stomatal conductance and relative chlorophyll content of P plants tended to be higher than those of the NP ones. In addition, NaCl pre-treatments enhanced K and Ca concentrations of leaves and stems, and prevented toxic effects of salinity because less Na accumulated in stems. These results suggest that the use of NaCl pre-treatments could be a useful strategy to increase the salt tolerance of melon plants in the long-term and also to permit the establishment of melon crop by direct sowing in a saline medium.

Damage to melon (Cucumis melo L.) cv. Durango by Meloidogyne incognita in Southern California

AbstractThe relationship between increasing Meloidogyne incognita inoculum density and the growth of melon plants in pots was well described by the Seinhorst model. The estimated tolerance level was not affected by the age of the plant at time of exposure to the nematodes, but minimum yields increased significantly when nematode inoculation was delayed until 2 weeks after seeding. Similarly, in field grown plants, melon fruit yields decreased with increasing pre-plant nematode levels. Tolerance levels estimated from the field study were one second stage juvenile (J2) per 200 g soil sampled before planting, and the estimated yield loss at high nematode densities was 65%. The yield loss resulted primarily from fewer fruits being harvested per plant, rather than from the fruits being smaller. This may be due to a redirection of plant nutrients towards sustaining the nematodes developing in the root systems, inhibiting fruit set. The results indicate that preventing immediate access of the nematodes to very young seedlings may prevent severe yield losses, but may also result in high populations at harvest.

Time course of solute accumulation and water relations in muskmelon plants exposed to salt during different growth stages

A greenhouse experiment was carried out to determine the effect of salinity on the water relations, osmotic adjustment and growth of melon plants ( Cucumis melo, L.). Three saline treatments (20, 40 and 60 mM NaCl corresponding to 4, 6 and 8 dS m −1, respectively) were applied at four different phenological stages (seedling, flowering, fruit set and fruit growth) to compare the effect of the time of application on the parameters studied. A reduction in stomatal conductance, water potential and osmotic potential was observed with all treatments. The degree of osmotic adjustment observed indicated that no changes in leaf turgor occurred after any of the saline treatments applied at the different stages. Total sugar concentration increased in the leaves immediately after all treatment applications but later reverted to control values. No changes were observed in the total amino acid concentration. Similar and significant increases were observed in leaf Cl − and Na + concentrations, which were greater at higher NaCl concentrations. Analysis of the contribution by the different solutes showed that inorganic compounds were increased to a greater extent than organic compounds after treatment application. Measurements of shoot height and leaf elongation rate showed that only salt applications during fruit set produce slight reductions in these two parameters while greater alterations were observed with the rest of the treatments.

Effects of different temperature regimes on vegetative growth of melon plants

Effects of different temperature regimes on vegetative growth of melon plants