Agriculture
Hamidreza sharifi; zohreh nabipour; Hamid Reza Tavakkoli Kakhki
Abstract
In order to investigate the effect of compensatory behavior of planting density, corm weight and planting depth on vegetative characteristics and yield of saffron stigma (Crocus. Sativus L.), a factorial split plot experiment with a randomized complete block design with three replications in the research ...
Read More
In order to investigate the effect of compensatory behavior of planting density, corm weight and planting depth on vegetative characteristics and yield of saffron stigma (Crocus. Sativus L.), a factorial split plot experiment with a randomized complete block design with three replications in the research center and Agricultural education and natural resources of Khorasan Razavi (Gonabad Research Station) was conducted in the cropping years 2018-2020. In this study, planting density treatment (in four levels of 60, 90, 120 and 150 corms per square meter) in the main plot and factorial planting depth (in two levels of 15±2 and 25±2 cm from the soil surface) and corm weight (in two Levels 4± 1 and 8 ± 1 gr) were located in the subplot. The results showed that increasing the density from 60 to 150 corms per square meter caused a significant increase in flower number, flower fresh weight and stigma dry weight, number of plants, number of leaves per plant, average length of a leaf and total leaf length per square meter. Accordingly, increasing the weight of coriander from 4 to 8 gr significantly increases flower number, flower fresh weight, stigma dry weight, number of plants, number of leaves per plant, average length of a leaf, total leaf length per square meter and total Leaf length per plant in the first and second years and reduced flower number, flower fresh weight and stigma dry weight in the third year. The results also showed that increasing the planting depth from 15 to 25 cm caused a significant decrease in all studied traits of saffron. The effect of dual and triple interactions on the studied traits was mainly significant. Overall, the results showed that the use of larger mother corms has a relative priority only in the early years and the importance of its effect decreases with increasing farm age. Based on this, it seems that it is possible to have a different strateg and with a combination of less depth and especially more density to compensate for the effect of corm weight and achieved more overall performance.
Agriculture
Seid Mohammad Alavi Siney; Ahmad Ahmadpour Jolgeh; Mohammad Behroozeh; Majid Soltani
Abstract
In order to investigate planting date and corm weight Effects on flower characters and saffron(Crocus sativus L.) yield, an experiment as a factorial was carried out based on randomized complete blocks design with three replications in research station of South Kerman Agricultural and Natural Resources ...
Read More
In order to investigate planting date and corm weight Effects on flower characters and saffron(Crocus sativus L.) yield, an experiment as a factorial was carried out based on randomized complete blocks design with three replications in research station of South Kerman Agricultural and Natural Resources Research and Education Center at Sfadagheh during 2017-2018 growing season Two factors, planting date (Jun, August and September) and corm size (6-8, 8-10, 10-12 and >12g) were evaluated in this experiment. Related traits with flower and Stigma and cormwere measured during growing season. Results showed that planting date have significant effect on all of traits except of dry weight of stigma. Also, the effects of corm weight and interaction of planting date×corm weight were significant on all of traits. So, the highest number of flower and the stigma yield were observed in the planting date of June and the corm weight more than 12 g. Therefore, for achieving high saffron yield, it is recommended planting date of June and the use of corms with more than12 g. Investigating the characteristics of the doughtercorms in the first year of the experiment showed that all studied traits were influenced by the planting date and the effect of the corm weight was not significant on the characteristics of the number of doughter corm over 6 g, the average weight of the doughter corm more and less than 6 g. According to the results of the traits related to the doughter corm, it can be anticipated that in the following year there is no difference in yield and its components among the different levels of maternal corm. Results in the second year showed that yield and yield components were only affected by the planting date and the corm weight had the same effect on them. The planting date of June 5th was the highest in the second year. According to the results and low price of saffron in June, in Southern Kerman foothill areas, cultivation of saffron should be done on June 5th. Since in the first year of the experiment, the yield don't achieved even from great mothernal corm, and given the fact that the mother corms of different weights in the second year have the same role in determining the stigma yield, in order to reduce the production costs, the 6 -8 g recommended for cultivation.
Agriculture
Ghorban Ali Asadi; soror Khorramdel; Reza Ghorbani; Bahareh Bicharanlou
Abstract
In order to evaluate the effects of organic, chemical and biological fertilizers and summer irrigation on growth characteristics, corm yield, flower yield and stigma yield of saffron, field experiment was conducted as factorial based on a randomized complete block design with three replications at Agricultural ...
Read More
In order to evaluate the effects of organic, chemical and biological fertilizers and summer irrigation on growth characteristics, corm yield, flower yield and stigma yield of saffron, field experiment was conducted as factorial based on a randomized complete block design with three replications at Agricultural Research station, Faculty of Agriculture, Ferdowsi University of Mashhad during three growing season of 2013-2014, 2014-2015 and 2015-2016. The first factor included of animal cow manure (a1), chemical fertilizer (such as Nitrogen, P and K) (a2), Thiobacillus (a3), sulfur (a4), a3+a4 and control (a5) and the second factor was summer irrigation in three levels such as conventional irrigation (A: without summer irrigation), A+ once summer irrigation (23 July), A+ twice summer irrigation (22 June+23 July). Studied characteristics were number and fresh weight of flower, dry weight of stigma, corm diameter, corm weight in four groups (16 g), corms with contractile roots, number of flowering buds per corm, leaf length, dry weight of leaf and dry weight of tunic of saffron. The results in the third of experiment revealed that the interaction effect between fertilizers and summer irrigation were significant (P≤0.01) on all studied traits of saffron except stigma dry weight, corms with weight more than 16 g and dry weight of daughter corms. The highest flower number (282.7 per m2), flower fresh weight (103.2 g/m2), stigma dry weight (1.73 g/m2), leaf dry weight (13.33 g/m2), buds dry weight (4.61 g/m2), flowering buds number per corm (2.627), corm percentage with cractile roots (58.41%), corm diameter (2.97 cm) and corms in different weight were obtained in animal manure and A+once summer irrigation. About simple effects, the highest stigma dry weight and dry weight of daughter corms were observed in animal manure and the highest amount of this traits were obtained in treatment A+once summer irrigation. It seems that summer irrigation increased the flower and stigma yield of saffron due to decreasing soil temperature.
Agriculture
mahsa aghhavani shajari; Parviz Rezvani Moghaddam; Reza Ghorbani; Alireza Koocheki
Abstract
This experiment was conducted in order to study the effect of cover crops on weeds population, flower and corm yield of saffron. The experiment was carried out based on Randomized Complete Block Design with three replications at the Research Station, Faculty of Agriculture, Ferdowsi University of Mashhad, ...
Read More
This experiment was conducted in order to study the effect of cover crops on weeds population, flower and corm yield of saffron. The experiment was carried out based on Randomized Complete Block Design with three replications at the Research Station, Faculty of Agriculture, Ferdowsi University of Mashhad, Iran, in 2013-14. The treatments included six cover crops: barely (Hordeum vulgare), persian clover (Trifolium resupinatum), fenugreek (Trigonella Foenum – Graecum L.), grass pea (Lathyrus sativus), rapeseed (Brassica napus) and arugula (Eruca sativa) and control. The results of analysis of variance showed that the effect of cover crops was significant on all of the studied properties. The maximum flower number (23.m-2), flower fresh weight (61.88 kg.ha-1) and stigma dry weight (0.990 kg.ha-1) were observed in the planting of rapeseed. The stigma dry weight at the control treatment was 41% more than planting a different kind of cover crops. Furthermore, the highest total weight of replacement corms and replacement corms weight without tunic per clone were obtained at the control and then planting of rapeseed as a cover crop. The number of replacement corms per clone among cover crop treatments was about 17% more than that of control. However, the lowest amount of all parameters of flower and corm of saffron were obtained for arugula, Fabaceae species and barely cover crop treatments. Meanwhile, the minimum amount of weed density was observed for barely, arugula, Fabaceae species cover crops treatments and control. Therefore, the results indicated that control and rapeseed as a cover crop treatments had better effects on the flower and corm parameters of saffron.
