S191 : Effect of Different Organic Substrates in Reproduction and Activity of Earhworms (Eisenia foetida)
Thesis > Central Library of Shahrood University > Agricultural Engineering > MSc > 2014
Authors:
Farnaz Houshyar [Author], Ali Abbaspour[Supervisor], MH. Rasouli [Supervisor], Hamid Reza Asghari[Advisor]
Abstarct: In recent years, much attention has been paid to the use of organic and bio- fertilizers particularly vermicompost in agricultural systems. Growth and reproduction of earthworms is important in vermicompost production. This research was conducted to compare different organic materials in Proliferation and the formation of vermicompost as a completely randomized design with 3 replications under controlled greenhouse conditions. For this purpose different organic materials (manure+wheat bran (CB), manure+wheat straw (CS), manure+plant residues sycamore and maple trees (CL), manure+apple trees and grape pruning waste and manure (CP), manure+ lemon balm (badranjbv) distillates waste (CE)) were used as treatments in 4 times 0, 60, 120 and 180 days. In order to investigate the effect of vermicompost on growth and yield of tomato plants, other test was conducted in a completely randomized design with 3 replications in greenhouse conditions. After 75 days of growth, some parameters such as (plant height, stem diameter, chlorophyll, dry weight of roots and shoots) and nutrient concentrations in plant tissues of tomatoes was measured. Population of earthworms (adult and immature) and the number of earthworms cocoons over time showed the highest value in the manure+ lemon balm distillates waste (CE) (earthworms population of 305 adult worm thread in the box) and manure+pruning waste (CP) (population 292 adult earthworms thread worm box) treatmentes due to nutrition and growth enhance and the ability of proliferation. Also concentration and ability of many nutrients absorption increased during vermicomposting. The highest nitrogen levels was observed in the manure+ lemon balm distillates waste (CE) (3%) and manure+pruning waste )CP( (3%) treatmentes. The most changes in reduction of C/N ratio were observed in the lemon balm distillates waste (CE) (8) and manure+pruning waste CP (8.2) treatments. The highest values of the growth parameters such as plant height (46.5 cm), stem diameter (1.6cm), shoot dry weight (12 g per pot) were observed in manure+pruning waste (V.CP) treatment compared to control Cont. (Peat and perlite) and the highest concentrations of nutrients nitrogen, phosphorus and potassium in the plant tissues were found in the manure+ lemon balm distillates waste (V.CE) treatment, respectively, 198, 103.2 and 101.6% compared to control (peat and perlite). Generally there is a possibility of growth and activity of earthworms in organic residues and Vermicompost can be a good alternative to non-organic fertilizers.
Keywords:
#Organic materials #Organic fertilizers #Vermicompost #Eisenia foetida populations #Tomatoes Link
Keeping place: Central Library of Shahrood University
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