Seyyed Fazel Fazeli Kakhki; Morteza Goldani; Jafar Nabati; Nasser Beikzadeh
Abstract
The geometric shape of a plant and its components depend on the allocation of absorbed nutrients and substances to a growing organ. In turn, the overall outcome is influenced by genetics and local environmental conditions. The relationship between different components of an organ can be shown with the ...
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The geometric shape of a plant and its components depend on the allocation of absorbed nutrients and substances to a growing organ. In turn, the overall outcome is influenced by genetics and local environmental conditions. The relationship between different components of an organ can be shown with the help of allometry. To determine the effects of organic fertilizers on morphological traits and yield of basil, this research was conducted as a factorial experiment based on a Completely Randomized Design (RCD) with three replication-s under controlled conditions. Experimental factors were basil ecotypes (green and purple) and organic fertilizers (cow manure, vermicompost, sulfur granular compost, and control). Results indicated that the highest values of plant height, fresh and dry weight of lateral branches, leaf count, leaf area, leaf fresh and dry weight, and plant biomass were found in green basil when vermicompost was applied. In contrast, the lowest mean values of these parameters were observed in the control. The application of vermicompost, cow manure, and sulfur granular compost caused increases of 30, 29, and 28% in the plant biomass of purple basil. Meanwhile, they caused increases of 61, 49, and 28% in the plant biomass of green basil, respectively. Also, the fitted experimental allometric relationship indicated a significant correlation between average leaf count and average leaf area (r2=0.95). Allometric relationships between root and shoot dry weight also indicated a more symmetric growth of these two parameters in green basil, compared to purple basil. Therefore, the analysis of growth relationships between plant components and production could be evaluated based on morphological components (i.e. leaf count, leaf area, and root dry weight as well as shoot dry weight), and allometric equations.
Sushanta Kumar Tarafder; Mrityunjoy Biswas; Asit Baran Mondal
Abstract
The study was conducted in Polashi, Manirampur Upazila, Jashore, Bangladesh, during Rabi seasons of 2020-2021 and 2021-2022 to evaluate the effects of organic nutrient sources on yield and shelf life of broccoli. The experimental layout was a Randomized Complete Block Design (RCBD) with three replications ...
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The study was conducted in Polashi, Manirampur Upazila, Jashore, Bangladesh, during Rabi seasons of 2020-2021 and 2021-2022 to evaluate the effects of organic nutrient sources on yield and shelf life of broccoli. The experimental layout was a Randomized Complete Block Design (RCBD) with three replications and six treatments which were: T1= Vermicompost 3 t ha-1, T2 = Vermicompost 4 t ha-1, T3 = Trichocompost 3 t ha-1, T4 = Trichocompost 4 t ha-1, T5 = FYM 12 t ha-1, T6 = (control). A Completely Randomized Design (CRD) was designed to determine the shelf life of broccoli with three replications, considering three factors, (i) the effects of organic sources of nutrient, (ii) storage materials at room temperature and (iii) storage materials at cold storage condition. The findings revealed that the effects of organic nutrient sources significantly influenced the yield and shelf life of broccoli. The treatment T2 (vermicompost 4 t ha-1) produced significant (p≤0.05) amounts of marketable curd yield of broccoli (22.33 t ha-1 and 21.27 t ha-1), followed by T4 (Trichocompost 4 t ha-1) with marketable curd yield (19.76 t ha-1, 18.78 t ha-1). In contrast, the minimum marketable curd yield (7.76 t ha-1 and 7.29 t ha-1) occurred in T6 (control) in the respective years. The treatment of T2 led to the highest shelf life (7.33 and 7.55 days) at room temperature (14-220C with RH 60-65%). At cold storage (40C with RH 90-95%), using High-Density Polyethylene (HDP;15 micron) vacuum pack, the shelf life was also significant (24.75 & 25.19 days) during the years of 2020-2021 and 2021-2022, respectively.
Eticha Dema Shiberu; Nigussie Dachassa; Temesgen Desalegn; Tesfaye Balami
Abstract
Black cumin (Nigella sativa L.) is an important spice crop in Ethiopia. However, the yield of the crop is low due to low soil fertility and poor soil fertility management practices. Here, a field research was conducted to evaluate the effects of applying mineral and organic fertilizers on seed yield ...
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Black cumin (Nigella sativa L.) is an important spice crop in Ethiopia. However, the yield of the crop is low due to low soil fertility and poor soil fertility management practices. Here, a field research was conducted to evaluate the effects of applying mineral and organic fertilizers on seed yield and oil content of black cumin. The treatment consisted of three rates of combined nitrogen and phosphorus (NP) fertilizer (20/15, 40/30, 60/45 kg N/P2O5 ha-1), three rates of blended mineral nitrogen, phosphorus, sulfur and boron (NPSB) fertilizers (0, 50 and 100 kg NPSB ha–1), and three rates of vermicompost (VC) (0, 3 and 6 t ha–1). The experiment was laid out as a randomized complete block design in a factorial arrangement with three replications. The results showed that the interaction of mineral fertilizers and VC significantly (P < 0.05) influenced seed yield and seed oil content. Increasing rates of the three fertilizers increased seed yield, but reduced the seed oil content. We concluded that applying 60/45 kg N/P2O5, 100 kg NPSB, and 3 t ha–1 of VC resulted in optimum seed yield (2.1 t ha–1), which is twice as much as the average yield of the crop in the country. However, the highest seed oil content (39.70%) was recorded at the rates of minimum N/P2O5 and zero rates of both NPSB and VC. This implies that integrated application of mineral and organic fertilizers can double productivity of the crop and improve farmers’ income in the study area.
Ebrahim Alami; Mahnaz Karimi; Vida Chalavi
Abstract
Water hyacinth (Eichornia crassipes) is one of the ten most invasive weed species in the world that is spread over most of the tropical and subtropical regions. Due to the environmental and economic concerns associated with spreading of the water hyacinth, control its distribution is important issue. ...
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Water hyacinth (Eichornia crassipes) is one of the ten most invasive weed species in the world that is spread over most of the tropical and subtropical regions. Due to the environmental and economic concerns associated with spreading of the water hyacinth, control its distribution is important issue. Water hyacinth can be used for composting and vermicomposting. In the present study, compost or vermicompost of water hyacinth was used as growing media for growing of lily plants (Longiflorum×Asiatic cv. ‘Nashville’). To do so, an experiment was conducted in a completely randomized design with nine treatments and four replications. Treatments included peat moss + perlite (2:1 v/v) as control and 25%, 50%, 75% and 100% of water hyacinth compost or vermicompost substitute for peat moss in control treatment. According to the obtained results, the tallest plants were observed in the control (55.50 cm) and 25% compost (55.25 cm) treatments. No significant difference was observed among 50, 75 and 100% compost and 25% vermicompost treatments. The highest number of open buds (3.50) was seen in 25% vermicompost. Results also showed that using 75% compost and 50% vermicompost increased nitrogen content of the leaf. Highest total phenol with 6.9 mg quer/g FW was recorded in 75% and 100% vermicompost. The maximum vase life (six days) was obtained in flowers grown in 25% vermicompost. In conclusion, water hyacinth compost or lower vermicompost percentages could be a substitute for peat as the growing media for lily plants.
Zahra Shahbazi; Amin Salehi; Saeid Hazrati; Mohsen Movahedi Dehnavi
Abstract
The application of organic fertilizers alone or in combination with bio-fertilizers is important for sustainable agriculture, healthy agricultural production and restoring soil quality. Compost, vermicompost and mycorrhiza amendments could improve soil quality and plant yield. However, little is known ...
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The application of organic fertilizers alone or in combination with bio-fertilizers is important for sustainable agriculture, healthy agricultural production and restoring soil quality. Compost, vermicompost and mycorrhiza amendments could improve soil quality and plant yield. However, little is known about their impact on yield and quality of European borage (Borago officinalis L.). To evaluate the effects of vermicompost, granulated compost, and mycorrhiza on qualitative and quantitative traits of B. officinalis an experiment was carried out based on a randomized complete block design arranged in a factorial experiment with three replications. Organic fertilizers in five levels (0, 5 and 10 t/ha vermicompost and 3 and 6 t/ha granulated compost) and mycorrhiza (Glomus mosseae) in two levels (with and without) were considered. It was shown that the effects of organic fertilizer and mycorrhiza application on nitrogen content were significant in such a way that the maximum nitrogen content was obtained by 10 t/ha vermicompost and mycorrhiza inoculation treatment. The main effects of organic fertilizer and mycorrhiza on phosphorus and potassium contents were also significant. The maximum values were obtained when 10 t/ha vermicompost and mycorrhiza were applied together. Total chlorophyll content, flower-bearing branches, mucilage, and phenol were measured in all three harvests. The results indicated that the interaction effect of harvesting time, organic fertilizer, and mycorrhiza was only significant on chlorophyll content. The maximum chlorophyll content (0.958 mg g-1 freshweight) was detected in the third harvest when 10 t/ha vermicompost and mycorrhiza were applied. Maximum mucilage content (4.23%), phenol content (5.07%) and flower-bearing branches (57.45 g m-2) were obtained by 10 t/ha vermicompost treatment. The results suggested that chemical fertilizers could be replaced by organic fertilizer and mycorrhiza to reduce soil and water contamination in the agroecosystems.
Shiva Zaferanchi; Saeid Zehtab Salmasi; Seyed Yahya Salehi Lisar; Mohammad Reza Sarikhani
Abstract
The present study was carried out to investigate biochemical responses of marigold (Calendula officinalis L.) to Bio-organic fertilizers. Effects of co-inoculation of two plant growth-promoting rhizobacteria (PGPR) (Azotobacter sp.145PI and Azospirillum sp.AC49I), humic acid (HA) (10 kg ha−1), ...
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The present study was carried out to investigate biochemical responses of marigold (Calendula officinalis L.) to Bio-organic fertilizers. Effects of co-inoculation of two plant growth-promoting rhizobacteria (PGPR) (Azotobacter sp.145PI and Azospirillum sp.AC49I), humic acid (HA) (10 kg ha−1), vermicompost (VC) (7 T ha−1) and combinations of these treatments were evaluated in two marigold cultivars [Isfahan double flower (DF) and single flower (SF)]. The biosynthesis of leaf protein, soluble and insoluble carbohydrate contents were increased in treated plants, while total free amino acid content was not influenced by treatments. Fertilizers also had positive impact on leaf and flower pigments, total flavonoid content, and total phenolic contents. Maximum amounts of anthocyanins were obtained in the DF cultivar treated by VC+PGPR and VC, which were 11.414 and 11.192 µmol g-1 FW, respectively. The SF cultivar treated by PGPR (36.11 %) and also the same cultivar treated by VC (33.39 %) had the highest antioxidant activities. In general, simultaneous application of fertilizers and also vermicompost were recognized as the best treatment for marigold plants. In conclusion, the findings of the current study confirmed that chemical composition and antioxidant activity of marigold can be positively influenced by Bio-organic fertilizers; therefore they can be used to obtain medicinal plants with improved quality during sustainable agricultural practices.