Investigating the effect of soil conditioners on the germination rate and percentage of Fraxinus excelsior seeds
Subject Areas : Forests and natural resourcesHamed Asadi 1 , salime rahimnezhad 2 , Seyed Mohammad Hojjati 3 , Hameid jalilvand 4 , Mojtaba Mahmoudi 5
1 -
2 - PhD student of Department of Forest Sciences and Engineering, Natural Resources Faculty, Sari Agricultural Sciences and Natural Resources University.
3 - professor of Department of Forest Sciences and Engineering, Natural Resources Faculty, Sari Agricultural Sciences and Natural Resources University
4 - professor of Department of Forest Sciences and Engineering, Natural Resources Faculty, Sari Agricultural Sciences and Natural Resources University
5 - Assistant professor Soil and Water Research Department, Mazandaran Agricultural and Natural Resources Research and Education Center, AREEO, Sari, Iran
Keywords: Germination percentage, Germination speed, Forest nursery, Lajim nursery,
Abstract :
Different fertilizers such as green, animal, chemical, biological and biochar are used in different nurseries to improve germination and growth. The purpose of this research is to investigate the effect of soil conditioners on the germination rate and percentage of Fraxinus excelsior seeds in forest nurseries. This experiment was carried out in Nursery Lajim, located in Sarjangalbani Kaslian, General Department of Natural Resources and Watershed of Swadkoh city. In this research, 20 soil conditioning treatments include rice husk to amount of 0.5% and 1% of soil volume, rice husk biochar to amount of 0.5%, 1% and 2% of soil volume, 150 and 300 grams of cow manure, minimum and maximum chemical fertilizer (minimum chemical fertilizer for super triple phosphate 0.6 grams, for ammonium sulfate 0.45 grams and potassium sulfate 0.45 grams and chemical fertilizer for triple superphosphate 1.2 grams, for ammonium sulfate 0.9 grams and potassium sulfate 0.9 grams) and the control treatment was considered with three repetitions. The seeds selected for the experiment were cultivated in the appropriate soil depth, by observing the first young seed on the 10th of April, counting of seeds has started. The quality of seed germination was leaf emergence. For statistical analysis, after checking the normality of the data and the homogeneity of variances using the Shapiro Wilk and Loon tests at the 95% probability level, one-way analysis of variance was used. If the data were significant, comparisons were made using Duncan's test. The results showed that the effect of soil conditioners on the speed and percentage of seed germination has a significant effect. The highest germination rate and percentage were observed in the treatments of 1.25% cow manure and 1% rice husk, 1% maximum chemical fertilizer and rice husk, 2% rice husk biochar and 1% rice husk biochar, and in general, the use of these materials had the greatest effect on seed Fraxinus excelsior. it is suggested to use organic materials such as rice husk and cow dung to increase the germination of Fraxinus excelsior seeds in forest nurseries.
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