Saffron (Crocus sativus L.) yield as affected by different fertilizing systems

  1.  Rasouli 1, S. Maleki Farahani 2* and H. Besharati 3

۱- MSc. Sudent, Department Crop Production and Plant breeding, College of Agriculture and Natural Resources, Shahed University,

Tehran, Iran

۲- Corresponding author, Department of Crop Production and Plant Breeding, College of Agriculture and Natural Resources,

Shahed University.

۳- Soil and Water Research Institute, Karaj, Iran

Abstract

Saffron (Crocus sativus L.) quantitative and qualitative yield was assessed in a factorial experiment based on randomized complete block design with three replications. The factors included NPK fertilizers at three levels (0, 50 and 100 percent of the recommended amount of fertilizer) and non-chemical fertilizers in four levels (no fertilizer, vermicompost, bio fertilizers containing Pseudomonas and Bacillus, and integrated application of vermicompost and bio fertilizers). Results showed that the interaction effect of chemical and non-chemical fertilizers was significant on all parameters and fertilization increased the quality and quantity yield of saffron compared to control. Integrated application of 50% of the amounts of chemical fertilizers, vermicompost and bacteria was the superior treatment to increase stigma dry weight, stigma yield, crocin percentage, picrocrocin percentage and safranal percentage by 2.03, 4.65, ۰٫۸۳, ۱٫۱۰ and 1.46 fold, respectively in comparison with control. Although the effectiveness of integrated application of bacteria with 0% and 100% chemical fertilizers on crocin content, pure vermicompost and integrated application of bacteria with 50% and 100% chemical fertilizers on picrocrocin content and pure bacteria on safranal content were more than those of integrated application of vermicompost, bio and 50% chemical fertilizer, the greatest impacts of recent treatment on flower yield, stigma yield and stigma ingredients led to introduce it as the superior treatment. The effectiveness of this treatment compared to 0%, 50% and 100% of chemical fertilizer application on dry stigma was 50.95%, 20.48% and 12.86%, respectively.

Source : Iranian Journal of Medicinal and Aromatic Plants, 2015

Study of morphological traits and picrocrocin variation in different genotypes of saffron (Crocus sativus L.)

                                                                    

  1. Ghavami 1, H. Zeinali 2*, M. Khosrowchahli 3 and S. Davazdahemami 4

۱- MSc. Student, Science and Research Branch, Islamic Azad University, Tehran, Iran

۲*- Corresponding author, Isfahan Research Center of Agriculture and Natural Resources, Isfahan, Iran

۳- Science and Research Branch, Islamic Azad University, Tehran, Iran

۴- Isfahan Research Center of Agriculture and Natural Resources, Isfahan, Iran

Abstract 

Crocus sativus L. is one of the most important medicinal plants and expensive spice in the world. This study was carried out to evaluate morphological traits and picrocrocin composition of 27 genotypes derived from different regions of country. Twenty-seven genotypes were cultivated in a randomized complete blocks design with three replications at Shahid Fozveh Station of Esfahan Research Center of Agriculture and Natural Resources. Stigma yield, flower fresh weight, number of flower, number of days to appearance of the first flower, plant height at flowering stage, flowering period and picrocrocin content were measured. Variance analysis of data showed significant differences among genotypes for all traits (p<0.01). Based on mean comparison, the highest and the lowest number of days to appearance of the first flower were recorded for Hamedan genotype and Ghaenat and Boshroye genotypes, respectively. The variation range of picrocrocin varied from 0.425 to 0.681. Neishaboor and Isfahan genotypes had the highest and the lowest stigma yield, respectively. In addition, the highest number of flower was recorded for Neishaboor genotype. Cluster analysis divided the genotypes in to seven clusters. According to the obtained results, the genotypes classified in the 6th cluster showed appropriate traits of stigma yield, flower fresh weight, number of flower, flowering period, and number of days to appearance of the first flower. Results of this study revealed considerable variation among the genotypes probably because of the variety of ancestors or mutation phenomenon. Our results showed no relationship between agronomic diversity and geographic distribution.

Source : Iranian Journal of Medicinal and Aromatic Plants, 2015

Effects of moisture stress on saffron flowering and yield

This research project “Effects of moisture stress on saffron flowering and yield” was planted in summer of 2011 in the farm of Agricultural and Natural Resources Research Station in Gonabad. The experiment was conducted as RCBD with five treatments in four replicates. The treatments were, 70% FC, 60% FC, 50% FC, C1 three irrigations, and C2 four irrigations. Treatments at the first irrigation and after flower picking were similar in all plots and then irrigations up to April were applied. The area was 200 m2 and plots were 1×۲٫Depth of planting was 20 cm with 100 corms in each plot. Quantitative characters under study were, flower no., fresh weight of flowers, dry weight of stigma, corm no., and corm weight, covering weight and dry weight of leaves at the end of study. Qualitative characters were, measurement of picrocrocin, crocin, and safranal. All these traits were measured statistically for each year separately and the two year average.
The results show that in most treatments by increasing moisture stress there has been a reduction in quality factors and an increase in quality factors. In most treatments four irrigations that one of them applied in mid-summer had superiority relative to other treatments.

Source: Agriculture, natural resources professional team – Institute of Food Science – Summer 2014

The Saffron mother corm

Alireza Koocheki 1, S. Mohammad Seyyedi 2, Homa Azizi 2 and Roshanak Shahriyari 2

Abstract

Saffron flowering can be mainly affected by mother corm size and phosphorus content of corm. In order to investigate the effects of mother corms size, organic fertilizers and foliar application on corm yield and phosphorus uptake of saffron (Crocus sativus L.) under control conditions, an experiment was conducted in the growing years of  ۲۰۱۲-۲۰۱۳ at Faculty of Agriculture, Ferdowsi University of Mashhad, Iran, by using a complete randomized design with 24 treatments and three replications. The mother corms size (0.1-4 g (small), 4.1 – ۸ g (medium) and 8-12 g (large), organic fertilizers (cow manure 25 t. ha-1, vermicompost 10 t. ha 1 compost 10 t ha-1 and control and micro nutrient (Fe-EDTA and Zn-EDTA) in two levels (foliar application and no application) were the first, second and third experimental factors,) , – respectively. Based on the results, the highest number and yield of replacement corms were observed by using the large (8.1-12g) mother corms. The effect of cow manure on replacement corm yield was significantly more than other organic fertilizers. The effect of foliar application on replacement corms yield were also significant. In addition, the highest concentration and content of phosphorus replacement corms was observed by using the large (8.1- 12g) mother corms. The content of phosphorus in replacement corms was significantly decreased by reducing the size of the mother corms.

۱-Professore , Ferdowsi University of Mashhad, Iran.

۲- PhD. Students of Crop Ecology, Ferdowsi University of Mashhad, Iran.

Source: Journal Agriculture and Technology saffron – Spring 2014