Showing 13 results for Vermicompost
S. Bidaki, V. Chalavi,
Volume 5, Issue 2 (7-2014)
Abstract
Growing media could affect quality and shelf life of strawberry fruits. In the present study, effect of seven growing media including a control medium (50% cocopeat + 50% perlite v/v ), and media supplemented with either 10, 20 and 40% of vermicompost or cattle manure in a completely randomized design with three replications was studied on postharvest quality and shelf life extension of Camarosa strawberry fruits . Freshly picked strawberry fruits were submerged in 1 mM putrescine solution for 5 minutes and after being air-dried at room temperature, were kept in plastic containers at 4 ºC refrigerator. After 15 days, total soluble solids ( TSS), total acidity (TA), TSS/TA ratio, fruit firmness and the percentage of fruit weight loss were determined . The results of analysis of variance showed that growing media had significant effect on fruit firmness, TA, TSS, TSS/TA ratio and percentage of fruit weight loss. The lowest fruit weight loss (16.2%) belonged to 10% cattle manure medium and the highest weight loss (36%) was observed in control medium. The highest fruit TSS content (19.13%) was observed in the growing medium containing 40% vermicompost. Since soilless culture growing media of strawberry are pathogen-free, no fruit was rotted before or after the harvest. Therefore, by using organic fertilizers in growing media, not only there is no need to use chemical fungicides, but also it would be possible to increase postharvest shelf life of strawberry fruits.
H. Ghorbani, M. Barmaki, Y. Kheirizadeh Arough,
Volume 6, Issue 2 (8-2015)
Abstract
This research was performed to study the effect of direct planting and transplanting of potato minituber on its yield and yield components. The experiment was designed as a randomized complete blocks with nine treatments and three replications. Treatments were one direct and eight indirect planting. In order to prepare the nursery, two types of pots (peat and nylon) and four types of substrates including sand + peat moss (1:1), sand + Kimiya organic fertilizer (1:1), sand + vermicompost (1:1) and sand + farm soil (1:1) were used. Results showed that there was significant difference in regard to mean yield per plant, mean wet weight of tuber, number of tubers smaller and greater than 80 g, percent dry weight of tuber, biologic yield, starch percentage and nitrate content of tubers. The highest mean tuber yield per plant, number of tubers greater than 80 gr and biologic yield belonged to plants in nylon pots with substrate of sand + Kimiya organic fertilizer. The highest percentage of starch and tuber dry matter belonged to plants in peat pots with substrate of sand + soil. The highest mean wet weight of tubers belonged to nylon pots with substrate of sand + peat moss. The highest number of tubers lower than 80 g and the highest nitrate content was obtained by direct planting. The sand+ Kimiya organic fertilizer, which provides the necessary elements for plant growth, with more yield and number of marketable tubers, could be the best substrate as compared to other substrates used in this experiment.
M.h. Rasouli-Sadaghiani, N. Moradi, R. Hamzenejhad,
Volume 6, Issue 4 (1-2016)
Abstract
This study was conducted to investigate the effect of type and ratio of vermicompost on tomato growth, with five different types of vermicompost (platanus leaves, maple leaves, pruning apple trees and grape, waste of herbal extracts and azolla residues) and four ratios of vermicompost to peat and perlite (2:1 v/v) as 0, 1:3, 2:3 and 3:3, at greenhouse conditions. Results showed that type of vermicompost had a significant effect (P≤ 0.05) on plant height, shoot dry weight, root dry weight, number of internodes and stem diameter. The interaction between type and ratio of vermicompost had significant effect on root and shoot dry weight, stem diameter, nitrogen (N) percent, and potassium (K) percent. The highest effect on shoot dry weight, stem diameter and the N percentage was observed in the ratio of 2:3 vermicompost of azolla residues. The amount of K in the ratio of 2:3 vermicompost of maple leaves increased 66.18% as compared to the control treatment. Also, different ratios of vermicompost increased percentage of phosphorus and concentration of iron and zinc, as compared to peat+ perlite treatment. Generally, different types and ratios of vermicompost compared to peat+ perlite medium had a positive effect on growth indices and mineral concentration in the tomato plant.
F. Mardani, R. Amooaghaie,
Volume 7, Issue 1 (5-2016)
Abstract
The first experiment was performed to evaluate the effect of vermicompost extract (20, 40, 60, 80, 100%) on seed germination and seedling growth of Plantago psyllium. In second experiment, the effect of solid vermicompost with 4 levels (0, 25, 50, 75) on the emergence and subsequent growth of plantlets was investigated. The 20 and 40% increased germination capacity, germination index, and length of root, shoot, vigor index and decreased mean germination time and T50. In second experiment 25% increased emergence energy, emergence rate, emergence index and emergence cofficiennt and decreased mean emergence time. 25% and 50% treatments increased the diameter, length, dry and fresh weight of root and aerial parts and length and width of leaves, and a, b, total chlorophyll and carotenoid in 3 old months's plant. But high concentrations were decreased these parameters. Thus, the effect of vermicompost on seed germination and subsequent growth of plantlets is dependent on concentration.
N. Dolatiyan, A. L Akzian, A. Fotowat, A. Tehranifar,
Volume 7, Issue 1 (5-2016)
Abstract
Due to the many restrictions on the use of soil and water resources, increasing greenhouse plants’ yield is important. In order to study the effect of humic acid (HA) on some growth and physiological traits of strawberry (Fragaria ananassa var: Selva), an experiment was conducted as a completely randomized design with factorial arrangement with three replications. The experimental factors included HA type (HA extracted from vermicompost, HA extracted from vermicompost in combination with 10 mg indole acetic acid, and commercial HA), three different concentrations of HA (0, 15 and 30 mg/L) and two methods of HA application (foliar and nutrient solution). The results showed that the highest yield, chlorophyll and total soluble solids was obtained from foliar application of 15 mg/L extracted HA, the highest ion leakage was achieved from foliar application of 30 mg/L extracted HA from vermicompost in combination with 10 mg indole acetic acid, and the highest dry weight of roots was obtained from nutrient solution application of 30 mg/L HA extracted from vermicompost in combination with 10 mg indole acetic acid. In general, 15 mg/L HA, extracted from vermicompost, sprayed as foliar application, was more successful in most studied traits.
B. Kermanizadeh, A. Gholamalizadeh Ahangar, S. K. Sabbagh, A. Sirousmehr,
Volume 7, Issue 2 (8-2016)
Abstract
This research was conducted in order to evaluate the direct effects of organic and biofertilizers on yield of two native wheat cultivars (Bolani and cross-Bolani) in Sistan area. The experiment was performed as a factorial, based on a completely randomized design with three replications, in Research Greenhouse of University of Zabol. In this study, fertilizer factor at 8 levels [Vermicompost (F1), vermicompost + compost (F2), vermicompost + mycorrhiza (F3), vermicompost + mycorrhiza + compost (F4), compost (F5), compost + mycorrhiza (F6), mycorrhiza (F7) and control (no fertilizer application, F8)] and two wheat cultivars [Bolani (C1) and cross-Bolani (C2)] were considered. Results showed that the highest grain yield (1.13 g/pot) was obtained from combination of mycorrhiza and cross-Bolani treatments (F7C2). Combined treatments of compost + mycorrhiza and cross-Bolani (F6C2) and vermicompost + compost and cross-Bolani (F2C2) were more suitable for nitrogen uptake. The highest percentage of protein (10.27%) was resulted from F6C2 and F2C2 treatment. Overall, combined treatments of F6C2 and F2C2 seem appropriate for Bolani and cross-Bolani wheat cultivars.
R. Kamaei, M. Parsa, M. Jahan Jahan,
Volume 7, Issue 4 (1-2017)
Abstract
Physiological responses of Hairy vetch (Vicia vilosa Roth) to biological, chemical and organic fertilizers were investigated in a completely randomized blocks design with three replicates. Fertilizer treatments consisted of three biological fertilizers and their combinations as well as incorporated with vermicompost and chemical fertilizer, resulting in 6 experimental treatments: 1- Mycorrhizae (Glomus moseae sp., 320 g/m2), 2- Mycorrhizae+ vermicompost (400 g/m2), 3- Mycorrhizae+ Nitroxin (Azospirillum sp. and Azotobacter sp.), 4- Mycorrhizae+ Rhizobium sp., 5- Mycorrhizae+ chemical fertilizer (NPK), and 6- control. Dry matter (DM), crop growth rate (CGR), net assimilation rate (NAR), leaf area index (LAI) and relative growth rate (RGR) were measured. Results showed that the effects of experimental treatments were significant for total DM, RGR, LAI and NAR, and not for RGR. The highest values of DM (83.3 g/m2), CGR (12.18 g/m2.day) and LAI (3.26) were observed in Mycorrhizae+ Rhizobium treatment. Based on the results of this experiment, a combination of Mycorrhizae+ Rhizobium fertilizer is suggested for highest performance of the Vicia vilosa Roth.
S. , M. Hosseini Farahi, A. Aboutalebi, M. M. Jowkar,
Volume 8, Issue 2 (8-2017)
Abstract
This research was performed to investigate the effect of different substrates and humic acid on quantitative and qualitative traits of cut Rose (Rosa hybrida cv. Angelina) in soilless culture. A factorial experiment was carried out in a randomized complete blocks design with three replications. The first factor was humic acid (HA) at 4 concentrations (0, 2, 4 and 6 gr/L) and the second factor was six different combinations of substrate (1- Vermicompost + Cocopeat, 2- Vermicompost + Perlite 3- Vermicompost + Zeolite, 4- Zeolite+ Cocopeat, 5- Sawdust + Cocopeat, and 6- Zeolite + Sawdust, as 50:50 ratio). Traits such as stem length and diameter, flower-bud diameter, fresh and dry weights of stem, chlorophyll index, and potassium and phosphorus content were measured. Results showed that application of HA and type of substrate was significantly effective (P<0.01) on all investigated traits. The highest flower stalk (73.63 cm), diameter of flower bud (33.3 mm), stem diameter (6.97 mm), stem fresh weight (48.83 gr), stem dry weight (12.11 gr) and leaf phosphorus content were obtained in the plants cultured in vermicompost+ cocopeat and treated with 6 gr/L HA as compared to other treatments. Therefore, application of 6 gr/L HA and mixture of vermicompost and cocopeat as susbtrate in order to improve the quality of rose cut flower in soilless culture is recommended.
N. Nemati, S. Ghasemi,
Volume 9, Issue 2 (9-2018)
Abstract
This study was aimed to evaluate the possibility of using enriched vermicompost with salt-tolerant strains of Streptomyces as a bio-fertilizer in growth and nutrition of cucumber under salinty stress. For this purpose, a pot experiment was set up in a completely randomized factorial design with three replications. Treatments included different salinity levels (0, 30, 60 and 90 mM sodium chloride) and vermicompost (control, unenriched vermicompost and enriched vermicompost with S. rimosus and S. griseus). Results showed that salinity stress caused a significant reduction in the root and shoot dry matter yield, nitrogen, potassium, iron and zinc concentration and potassium: sodium ratio, but increased sodium concentration and cell membrane permeability. Under these conditions, application of vermicompost maintained the structure of cell membranes, improved balance of nutrients and thus reduced the adverse effect of salinity on the plant yield. The effect of vermicomposts enriched with S. griseus and S. rimosus on maintaining root membrane permeability, improving plant nutrition and increasing salt tolerance of plants was more than unenriched vermicompost. So that the highest root and shoot dry weight in salinity of 90 mM NaCl was observed in vermicompost treatment enriched with S. rimosus. According to the results of this study, vermicompost enriched with salt-tolerant strains of Streptomyces, in addition to maintaining the balance of nutrients in saline conditions, improves morphological and physiological characteristics of cucumber plant and thereby can alleviate the damage induced by salinity stress.
M Haghighi, M. R. Barzegar,
Volume 11, Issue 2 (8-2020)
Abstract
Organic substrate can increase crop productivity. This experiment aimed to improve the yield and growth parameters of sweet pepper (Capsicum annuum L. cv. ‘Gold flame’) by using three levels of modified Johnson’s nutrient solution (JNS), including full JNS as the control (NSc), 75% JNS (NS1) and 50% JNS (NS2) as well as three types of substrates that were based on three levels of vermicompost: vermicompost:perlite:cocopeat (1:1:1 v/v; V1) as the control, vermicompost:perlite:cocopeat (1:1:2 v/v; V2) and vermicompost:perlite:cocopeat (2:1:1 v/v; V3). Fruit fresh weight (86.18%) and dry weight (43.03%), root dry weight (68.63%) and root volume (43.67%), fruit diameter (12.39%) and yield (59.30%) increased significantly in V3 treatment. The application of vermicompost increased photosynthesis rate, respiration, nitrogen, phosphorus, and potassium concentrations more than Johnson’s nutrient solution. Fruit fresh and dry weights, root fresh and dry weights, root volume, fruit diameter and yield decreased in NS2 and NS1 and application of V3 improves the fresh weight of fruit in NS1. The highest fruit yield was observed in NSc treatment in combination with V3. Photosynthetic rate, and P and K concentrations increased with vermicompost application in all nutrient solution. The N and P concentrations decreased in NS1 and NS2 while respiration was stimulated by V2 and V3 in combination with NS1. The P decreased in NS1 and NS2 but was stimulated by both V2 and V3 treatments. The N level was reduced in NS1 and NS2 but V3 enhanced the level of N when combined with NS1. Overall, plant growth, yield, photosynthesis and nutrient N, P, K concentrations can be increased in sweet pepper by the addition of vermicompost and nutrient solution.
N Ahmadi, H Fatemi, B Esmaielpour, َa Soltani- Tolarood,
Volume 11, Issue 2 (8-2020)
Abstract
Organic amendments not only promote soil quality but also indirectly facilitate the establishment of bacteria. A greenhouse experiment was conducted to investigate the effects of organic substrates and plant growth promoting rhizobacteria inoculation on morphological characteristics of lettuce (Lactuca sativa L. Cv Rabicon.) in a factorial arrangement based on completely randomized design with four replications. Experimental treatments included organic fertilizers (vermicompost 20% v/v, spent mushroom 10% v/v and soil) and seed priming with promoting growth regulating bacteria (Pseudomonas putida P10, Pseudomonas fluorescence R159 and R150 and non-inoculated). At the end of growth stage, morphological traits (plant height, leaf number, crown diameter, leaf area, root length and volume, shoot fresh and dry weight), photosynthesis pigments (chlorophyll a, b, total and carotenoid), vitamin C, phenol, flavonoid and nitrate concentration were measured. The results indicated that the simple effects of substrate and bacterial strains inoculation were significant on traits including plant height, crown diameter, leaf area, root length and volume, shoot dry and fresh weights, chlorophyll a, b, total and carotenoid, vitamin C, phenol and flavonoid. Interaction of both factors had significant effects on leaf area, root length and volume, chlorophyll a and phenol. However, plants treated with vermicompost and Pseudomonas fluorescence R159 had higher values for both fresh and dry weight, phenol content and chlorophyll. Although some traits were higher in plants treated with compost and Pseudomonas putida P10 or vermicompost and Pseudomonas putida P10, but finally it seems that Pseudomonas fluorescence R159 has played a higher role in the final quantity and quality of lettuce.
S. H. Hosseini Jafari, M. J. Zarea,
Volume 13, Issue 2 (9-2022)
Abstract
Plant nutrition management and soil fertility are among factors that determine crop productivity and sustainability under agro-ecosystems conditions. A pot experiment was conducted to investigate the effect of vermicompost provided from sugarcane bagasse and foliar application of microalgae extract of Spirulina on growth parameters, grain yield and yield attributes of rapeseed. The experiment was a factorial combination of Spirulina extract and bagasse vermicompost arranged in a complete randomized block design with four replications. Plants were foliar sprayed with three different concentrations of Spirulina extract (i.e., 0, 2, 4, and 6 %v/v) and application of five vermicompost mixtures based on mass percentage of bagasse and buffalo manure (i.e., 0%, 75% bagasse + 25% buffalo manure, 50% bagasse + 50% buffalo manure, 25% bagasse + 75% buffalo manure, and 100% buffalo manure). Spirulina extract and vermicompost interaction effects on the length of root, root weight, leaf area, chlorophyll pigments, 1000-seed weight, protein and oil content in seed, grain yield and harvest index were significant. The highest seed oil content (43.35%) and seed protein content (36.85%) were recorded in plants foliarly sprayed with 6% Spirulina extract. Application of vermicompost resulting from a mixture of buffalo manure + bagasse with the higher ratio of buffalo manure to bagasse gave better seed and oil yield as compared to other vermicompost treatments.
M. Kamali, F. Abdollahi, A. Asgari,
Volume 14, Issue 1 (3-2023)
Abstract
Abstract
To investigate the response of transplant and whole plants of tomato (Solanum lycopersicum) to the type of substrate and fertilizer, a factorial experiment was conducted as a randomized block design in Minab city of Hormozgan province with three replications. The first factor included four types of substrates and the second factor included five fertilizers levels. The results of the greenhouse experiment showed that the substrate type and fertilizer had a significant effect on the transplant traits. The results showed that the maximum leaf number and root dry weight of transplants were obtained in the cocopeat + vermicompost substrate. In each substrate, fertilizers improved the transplant traits, and organic and biological fertilizers were more effective. Thus, the maximum transplant height was determined in the cocopeat + vermicompost with algae fertilizer, and the maximum fresh weight and root volume were measured in the same substrate but with phosphozite fertilizer. The results of the field study showed that the evaluated traits were affected by the substrate type and fertilizer, and the seedlings previously grown in the substrates that improved their traits, had better growth after transferring to the field. The results showed that the highest number and yield of fruit, total soluble solids, and ascorbic acid were obtained in the seedlings produced in cocopeat + vermicompost substrate and organic fertilizers.
Background and Objective: Transplants production in vegetables, are affected by the type of substrate and fertilizers. Therefore, the purpose of this study was to investigate the response of some traits of tomato seedlings and whole plants to the substrate type and fertilizer.
Methods: Factorial experiment was conducted as a randomized complete block design with three replications in both greenhouse and field conditions. The experimental factors included four substrates (cocopeat + peat moss, cocopeat + vermicompost, cocopeat + date peat and cocopeat + perlite as controls, all with a volumetric ratio of 50:50) and five levels of fertilizer including NPK fertilizer, phosphozist biofertilizer containing phosphorus-fixing bacteria Pseudomonas putida strain p13 and Pantoea agglomerans strain p5, powdered humic acid, and Acadian seaweed containing brown algae powder Ascophyllum nodosum and the control. After planting tomato seeds in the seedling tray, and formation of true leaves, the transplants were sprayed with the mentioned fertilizers with a concentration of 0.1%. Thirty eight days after planting, the seedling trays were transferred to the laboratory to evaluate traits including transplant height, leaf number, root fresh and dry weights, root length, root volume, and SPAD index. In the field experiment, transplants of the first experiment were planted in the research farm located in Minab. After seedlings establishment, they were treated with the fertilizers used in the first experiment, including phosphozist, algae, humic acid, and NPK, in the three stages of transplanting, before flowering and at the time of fruit formation, in the amount of 2 liters and 2 kg, 2 kg and 10 kg per hectare, respectively, with irrigation water. At the end of the field experiment, quantitative traits including the number of fruits per plant, average fruit weight and total fruit yield, and fruit qualitative traits including firmness, total soluble solids (TSS), titratable acidity (TA) and, ascorbic acid content were measured.
Results: The results of greenhouse study showed the significant effect of the planting substrate on all traits of tomato transplant, while the effect of fertilizer type was significant only on the leaf number, root length and volume, and SPAD index. The highest values of these traits were often obtained in the cocopeat + vermicompost, while the lowest means of transplant vegetative traits were measured in the cocopeat + date peat substrate. In confirmation of these results, it has been reported that the presence of vermicompost in the seed bed, due to the availability of more nutrients, improvement of the soil physical properties, and increased water retention, leads to an increase in the vegetative growth of the seedling (1). In each planting bed, the application of all fertilizers improved the vegetative traits of tomato transplant, however, in most cases, the highest means were observed with the use of phosphozist. It has been reported that fertilizers containing phosphorus-dissolving bacteria increased the vegetative growth of the aerial and underground organs of tomato transplants (2). The results of the field study showed that the fruit traits were affected by the substrate in the greenhouse and fertilizer in the field. Besides, the seedlings previously grown under the treatments that improved seedling vigor, had better vegetative and qualitative characteristics in the field condition. It has been shown that the transplants that are produced under suitable conditions, after transferred to field, have a better ability to take up nutrients and water, have a higher growth rate and therefore have more potential yield under field conditions (3).
Conclusions: The results showed that, the highest means of the evaluated traits of transplant were related to the cocopeat + vermicompost substrate. In this study, the application of all fertilizers caused a significant increase in transplant vegetative traits, and in most cases algae and phosphozist fertilizers were superior to other fertilizers. The results of the field study indicated that the proper management of seedling production through the selection of suitable substrate and fertilizer resulted in the seedlings with better vegetative characteristics. Therefore, after being transferred to the field, via better vegetative growth, the quantitative and qualitative traits of tomato plants were improved significantly.
References:
1. Blouin, M., Barrere, J., Meyer, N., Lartigue, S., Barot, S., Mathieu, J., 2019. Vermicompost significantly affects plant growth. A meta-analysis. Agronomy for Sustainable Development 39: 34. https://doi.org/10.1007/s13593-019-0579.
2. Kim, J., Kim, S., Nam, I., 2021. Effect of treating acid sulfate soils with phosphate solubilizing bacteria on germination and growth of tomato (Lycopersicon esculentum L.). International Journal of Environmental Research and Public Health 18(17): 8919. https://doi.org/10.3390/ijerph18178919.
3. Qin, K., Leskovar D. I., 2020. Humic substances improve vegetable seedling quality and post–transplant yield performance under stress conditions. Agriculture 10(7): 254. https://doi.org/10.3390/agriculture10070254.
