Other subject about saffron
Zohre Natavan; Rooholla Moradi; Mahdi Naghizadeh; Nasibeh Pourghasemian
Abstract
In order to study the effect of different chemical and organic mulch types on density and biomass of weed and some agronomical characteristics of saffron (Crocus sativus L.), an experiment was conducted based on randomized complete block design with three replications at Qaen region in during 2018-2019. ...
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In order to study the effect of different chemical and organic mulch types on density and biomass of weed and some agronomical characteristics of saffron (Crocus sativus L.), an experiment was conducted based on randomized complete block design with three replications at Qaen region in during 2018-2019. The experimental treatments were application of various mulch types for weed control (no weed control, hand weeding, transparent polyethylene, black polyethylene, beeswax waste, residues of grape leaf, wheat straw, pomegranate leaf, pistachio leaf, barley straw and saffron corm dunnage). The results showed that all the treatments except transparent polyethylene significantly reduced the number of species, density, dry weight and shannon diversity of weed compared to no weeding treatment. The lowest dry weight of weed was related to black polyethylene (52.22 g m-2) and wheat straw (123 g m-2) mulches. Application of all the mulches except transparent polyethylene caused a significant increase in corm, flowers and stigmas yield of saffron compared to non-weeding conditions. Beeswax waste and wheat straw had the highest number of flowers (151 and 135 flowers m-2) and stigma yield (4.89 and 4.32 kg ha-1), respectively. Black polyethylene, pomegranate leaf and grape leaf did not show a significant difference with hand weeding in terms of growth and yield of saffron. In general, the results confirmed that the application of all the studied mulches with the exception of transparent polyethylene led to appropriate weed control and improving saffron yield characteristics compared to no weed control treatment and are recommended to farmers.
Agriculture
Seyyed Alireza Musavi; Hassan Feizi; Ahmad Ahmadian; Ebrahim Izadi Darbandi
Abstract
In order to examine the allopathic effects of saffron organs on the growth and germination of two species of Hordeum murinum L. and Descurainia sophia L. weeds, an experiment was done in the school of agriculture of the University of Torbat Haydarieh, Iran. The experiment was done as factorial in a completely ...
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In order to examine the allopathic effects of saffron organs on the growth and germination of two species of Hordeum murinum L. and Descurainia sophia L. weeds, an experiment was done in the school of agriculture of the University of Torbat Haydarieh, Iran. The experiment was done as factorial in a completely randomized design with four replications with different levels of organs (leaf, corm and a combination of leaf and corm) and extract concentration (zero, 1, 2.5, 5, 10 and 20 percent). The results indicated that saffron extract has negative effects on growth and germination parameters such as the length and weight of the root, stem and seedlings, the speed of germination, the percentage of germination, the seed vigor index and the number of normal seeds in both species of weeds. The highest germination rate was shown by Hordeum murinum (10.48) that was obtained in the 2.5 percent application in the leaf and corm extractions. In addition, in this weed the highest seed vigor index (21.75) was seen in the application of 2.5 percent of leaf extraction and the lowest seed vigor index was obtained (10.75) in the 20 percent application of leaf and corm extractions. In the D. sophia L. weed the highest seed vigor index was 21 and the number of normal seeds was 15.75, respectively, in the one percent concentration of leaf and corm and the 2.5 percent concentration in the corm extraction and its lowest value was seen in the 20 percent of leaf and corm extraction. The application of leaf and corm combination extraction in comparison with leaf and root separately, significantly lead to a reduction of the germination traits. On the whole, its seems that using the saffron extracts in the concentrations of 10 and 20 percent significantly affect the growth and development of Hordeum murinum and Descurainia sophia weeds negatively in the germination stage.
Agriculture
Zeinab Alipoor; Sohrab Mahmoodi
Abstract
This study was conducted in two factorial experiment based on completely randomized design with three replications at research laboratory of faculty of agriculture in University of Birjand in 2013. Factors included saffron organs at 2 levels (leaves and corms) and water extract concentrations at 5 levels ...
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This study was conducted in two factorial experiment based on completely randomized design with three replications at research laboratory of faculty of agriculture in University of Birjand in 2013. Factors included saffron organs at 2 levels (leaves and corms) and water extract concentrations at 5 levels (0, 0.5, 1, 1.5 and 2 percent).The allelopathic effects of saffron leaves and corms on seed germination and seedling growth characteristics of flixweed (Descurainia sophia L.) and downy brome (Bromus tectorum L.) were studied in two separate experiments. Results indicated lowest seed germination percentage of downy brome and flixweed were observed at concentration of 2% of corm extract (by 65% and 66% reduce compared to control, respectively). The rate of germination of downy brome decreased (by 71% compared to control) with concentration of 2% of leaf extract but the rate of germination on flixweed was not significantly affected by extract concentrations. Different concentrations of leaf and corm extracts significantly decreased length and weight of plumule and radicals of two weeds. A logistic model provided a successful estimation of relationship between leaf water extract and germination percentage of two weeds. Based on orthogonal comparison tests, the allelopathic inhibition effects of saffron leaves and corms were more on downy brome and flixweed, respectively.
