جستجوی مقالات مرتبط با کلیدواژه « vermicompost » در نشریات گروه « اقتصاد کشاورزی »

To study the effect of culture medium, organic matter, and salinity on active compounds of lemon balm, a factorial experiment was conducted in completely randomized design with 3 replications. First factor (culture medium at three levels; compost+arable soil, vermicompost+arable soil, and compost+vermicompost+arable soil), second factor (organic matter; humic acid (HA) and effective microorganisms (EM) both 5 per 1000); and third factor (salinity; tap water, 40 and 80mM). Examination of essential oils by the GC method revealed the presence of 34 compounds. These compounds were affected by substrate and salinity. The major constituents of essential oils including Trans-carveol, Carvacrol acetate, Isoborneol, Isopulegol and γ-3-Carene were observed in the combined substrate of arable soil+compost+vermicompost, and the highest levels of 1,3,8-P-menthatriene, Citronellol, and γ-Terpinene were observed in the combined substrate of arable soil+compost. With increasing salinity, amount of Trans-carveol, Carvacrol acetate, γ-Terpinene, Isoborneol, Citronellol increased, and γ-3-Carene, Isopulegol and 1,3,8-P-menthatriene decreased significantly. The highest percentages of Trans-carveol (21.85), Isoborneol (12.90), Carvacrol acetate (11.78) were observed in the salinity of 80mM in combined substrate of arable soil+compost+ vermicompost. The highest percentage of Citronellol (11.12) and γ-Terpinene (9.87) were recorded under compost substrate. In the control and with a combined substrate of arable soil+compost, the highest percentage of compounds, including 1,3,8,P-menthatriene (9.93) was observed. Finally, the combined substrate of arable soil+compost+vermicompost caused the highest percentages of Isopulegol (8.98) and γ-3-Carene (8.47). Application of HA could increase the main constituents, in lemon balm.

Evaluation of seed germination characteristics is one of the basic and preliminary studies of medicinal plants. The present study was conducted to investigate the effect of culture medium and organic matter on improving the germination characteristics of lemongrass seeds as a factorial experiment in a completely randomized design with three replications in Jahrom city. The first factor is the culture medium at three levels (compost, soil and vermicompost, compost + vermicompost and vermicompost + soil at equal ratios) and the second factor was organic matter at three levels (control, effective microorganisms (EM) and humic acid 5mlL-1). Germination percentage, rate and mean daily germination, plant vigor and germination index were measured. The results showed that the effect of culture medium, organic matter and the interaction of culture medium and organic matter on all germination characteristics of lemongrass seeds was significant. Highest germination percentage, germination rate, mean daily germination, vigor index and seed germination index were obtained by using EM. The culture medium containing soil + compost and soil + vermicompost alone had the highest germination traits. The interaction of culture medium and organic matter showed that the highest seed germination percentage of 100% was obtained in soil culture medium + compost using EM. The highest germination rate as well as the highest germination index were observed in soil culture medium containing compost + vermicompost using EM. In order to increase germination and improve the seedling quality of lemongrass, the use of EM and the combination of soil + compost for culture medium is recommended.

In order to investigate the effects of chemical and organic nutritional systems on yield, water utilization in rice cultivars under irrigation stress, a split Plot factorial experiment was conducted in a randomized complete block design with three replications at Dasht-e Naz Agricultural Company, located in the city of Sari in 2016 Irrigation stress treatments were performed in three levels: the stress at the time of the beginning of the tillering (15 days after the installation of the work), the developmental stage of the transfer (the end of flowering and grain filling start) and the lack of stress (controls) as the main factor, through irrigation cut and irrigation again after the appearance of surface cracks The type of feeding system was considered in four levels of Vermicompost and compost azolla (6 and 8 t.ha-1 respectively), humic acid (4.5 L.ha-1) and the common chemical fertilizers Nitrogen, Phosphor, Potassium and cultivars were considered on two levels (Shirodi and local Tarom) in factorial form as a subagent The results variance analysis showed that there was a significant difference between Shiroudi and Tarom cultivars in terms of rice paddy yield in different levels of irrigation stress and nutritional systems. Under common irrigation conditions, the most biological functions of Paddy yield in the varieties of Shirodi and local Tarom, was obtained 6577.9 and 3776.4, Kg.ha-1, Respectively. Low irrigation stressin the developmental stage of the beginning of the tilleringreduced the rice paddy yield by 6.87 and 1.67 andin the remobilization stage, reduced the rice paddy yield by 17.65% and 2.97%, compared to non-stressed conditions With application of humic acid nutrition system, improvement of rice yield was observed in Shiroudi (6563.1 Kg.ha-1) and local Tarom (3878.77 Kg.ha-1) in compared with other nutrition systems.by using the humic acid, azolla compost and Vermicompost in Shirodi variant, the rice paddy yield increased 16.12, 9.02 and 3.62 Percent and in local Tarom 7.85, 3.47 and 2.21 percent respectively, compared with the chemical fertilizer. The highest Water Use Efficiency in the cultivars was observed with the average of 0.1050 and 0.8016 Kg/m3No rainfall, outlet runoff and tillage water were observed under conditions of non-stress. Totally, the results showed highest yield of Paddy was obtained for both Shirodi and Tarom cultivars under non-stress conditions in the humic acid nutrition system.

Entrepreneurial ventures provide new opportunities that help rural livelihood in employment and income which in turn enhance economic conditions. One of the income generating opportunities is to use animal, agricultural and household wastes in Vermicompost production that would help to diversity farmer's income. Vermicompost technology has an economical, social, cultural, and environmental dimension. However, this technology has not yet developed extensively across Kermanshah Province. The development of Vermicompost technology in Kermanshah Province would provide sustainable rural livelihood, employment, food security, and healthy food. Therefore, the purpose of this qualitative study was to explore the potential and opportunities of developing Vermicompost production during the years of 1391-1392. Using purposeful sampling, a total of 21 Vermicompost producers with at least 2 years of experience from a population of 52 producers participated in this study. Data was collected using observation, deep and semi-structured interview. Collected data was analyzed using open, axial, and selective coding. Results revealed that Vermicompost production has the following characteristics across studied areas: Sound production capacities, ease of production process with high profit, storage and ease of transportation, diverse application of its byproducts in agriculture and industry, export opportunities within and across Provinces, employment opportunities, and sustainable livelihood and health opportunities.

Today, the material resources available to supply soil organic matter cannot
respond agriculture practices. In Iran, More than 60 percent of the cultivated soil
organic carbon content is less than one percent and in considerable part of the soils
is less than 0.50 percent. While critical point of soil organic carbon for the stability
of soil structure is two percent. Rural waste management and convert them into
vermicompost is affordable way to provide organic material. In this regard, in order
to the supply of organic matter for agricultural soils, vermicompost production in
Fars province is expanding. This study was conducted to investigate the impacts of
vermicompost production from the perspective of women in the Fars province and it was done by qualitative method and conducted in-depth, structured interviews. Results showed that vermicompost production have many positive effects for rural communities including: economic impacts (increase production, reduce costs, and strengthen the non-agricultural economy), environmental impacts (reducing pollution of water, soil and air, reducing the volume of garbage, preserving the beauty of the rural landscape), and health impacts (producing safe products, reduce cancer, reduce the number of insect pathogenic). Rural women said that use of vermicompost in the farming also increases soil productivity. The findings showed that the most important health impacts of vermicompost production are organic production and reduce diseases, especially cancers. Rural women believed that produce vermicompost from organic waste is one of the important ways to reduce environmental pollution. The practical suggestions are provided for improving the production of vermicompost.

In order to study the effects of vermicompost and amino acids application on flower yield of Chamomile (Matricaria chamomilla L.)، an experiment was carried out in the Alborz Medicinal Plant Research Station at Karaj region. The experiment design was factorial based on RCBD with three replications. Treatments were vermicompost in 5 levels (0، 5، 10، 15 and 20 ton/ha) and amino acid spraying in 3 levels (at budding stag، at flowering stage، at budding stag + at flowering stage). Results of this investigation showed that days to budding and flowering are not affected by amino acid spraying. But، vermicompost had significant effect on days to flowering. The highest plant height (41. 8 cm)، fresh flower yield (3335. 7 kg/ha) and dried flower yield (653. 8 kg/ha) were obtained by using 20 tons vermicompost per hectare. Maximum yield were obtained by amino acid spraying in 2 times (at budding stag + at flowering stage). According to the interaction effects of the treatments، applying of 15 ton/ha vermicompost and spraying amino acids in 2 times (at budding stag + at flowering stage) caused highest fresh and dried flower yield.

This research was don to investigate the effect of mycorrhiza and vermicompost as the biological fertilizers to compare with chemical fertilizer phosphorous and nitrogen on yield and yield component of corn. It was based on factorial in a RCBD with 3 replications when soil control condition was some in 2010. Treatment were considered as using chemical fertilizer (F) in three levels of fertilizer's sources, urea, triple super phosphate and potassium include: F0 (N=0, P=0, K=0), F1 (N=70, P=50, K=30) and F2 (N=150, P=100 and K=50) kg/ha, vermicompost treatment in two levels (using V1 and non-using V0) and mycorrhiza treatment in two levels (using M1 and non-using M0) (population 105 g/spore). Results of variance analysis showed there was significant different between different levels’ interaction of vermicompost, chemical fertilizer and mycorrhiza on grain yield p=1% and there isn’t any significant difference between the kernel number and 1000 kernel weight. Comparing the average of interaction of vermicompost, mycorrhiza and chemical fertilizer showed significant difference on grain yield, that treatment V1F0M1 and V1F1M1 with averages 119.33 and 113.00 g/pot have higher amount of grain yield than teratmentV1F2M1 with average 106.33 g/plant, and treatment V1F0M0 with average 87.00 g/plant has lowest amount of grain yield. Comparing the average of vermicompost interaction, fertilizer’s level and myeorrhiza showed significant difference on the 1000 kernel weight and treatment V1F0M1 with average 168.33 g has highest weight of 1000 kernel weight and treatment V1F1M1 with average 134.67 g has lowest weight of 1000 grains. Use of mycorrhiza and vermicompost in low levels of chemical fertilizer could cause increase of yield and grain yield component but in high levels of chemical fertilizer their activity became hampered.