Agriculture
ramin Esmi; Parviz Rezvani Moghaddam; Alireza Koocheki; ahmad ahmadian
Abstract
In order to investigate the effects of mother corm weight (including 4.1-7, 7.1-10 and 10.1-13 g) and different levels of cow manure (including 30 (control), 60 and 90 t/ha) on flower characteristics and daughter corms of saffron, a factorial experiment based on randomized complete block design with ...
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In order to investigate the effects of mother corm weight (including 4.1-7, 7.1-10 and 10.1-13 g) and different levels of cow manure (including 30 (control), 60 and 90 t/ha) on flower characteristics and daughter corms of saffron, a factorial experiment based on randomized complete block design with three replications was conducted during two cropping years (2012-13, 2013-14) in Zaweh county. The results of variance analysis in the first and second years showed that there were significant differences between the simple effects and the interaction effects in terms of most of the studied traits, and these differences were higher in the second year. The highest (56.8 m-2) and the lowest (41.3 m-2) flower numbers were obtained in 90 t/ha cow manure with bigger corm size ( 10.1-13 g) and 60 t/ha cow manure with smaller corm size (4.1-7 g) treatments, respectively. 60 t/ha cow manure with bigger corm size (10.1-13 g) and 60 t/ha cow manure with smaller corm size (4.1-7 g) treatments produced the highest (0.347 g.m-2) and the lowest (0.220 g.m-2) dry weight of stigma, respectively. The highest and the lowest of total number of daughter corms (504.2 and 264.7 m-2), total daughter corm yield (2677.3 and 1582.9 g.m-2) were shown in 90 t/ha cow manure with bigger corm size ( 10.1-13 g) and 30 (control) t/ha cow manure with smaller corm size (4.1-7 g) treatments, respectively. In addition, the mean comparison of interaction effect in the second year showed that there were significant differences between most of treatments. The interaction effects of studied traits in the second year showed that 90 t/ha cow manure with bigger corm size (10.1-13 g) and 30 (control) t/ha cow manure with smaller corm size (4.1-7 g) treatments produced the highest and the lowest flower number (231.0 and 156.5 m-2), stigma dry weight (2.062 and 1.053 g.m-2), total number of daughter corms (1024.5 and 505.5 m-2) and total daughter corms yield (4486.6 and 2133.1 g.m-2), respectively. Finally, it can be concluded that by increasing the use of cow manure (more than 60 t/ha) and the use of more than 7 grams mother corms, it is possible to improve the number and yield of daughter corms and these traits will increase the saffron stigma yield in the next coming years.
Agriculture
Hamid Reza Tavakkoli kakhki; Ali Mokhtarian; Mohamad Hossein Binabaji; Hassan Hamidi; Ramin Esmi
Abstract
In order to investigate the effect of planting density and maternal corm weight on some characteristics of daughter corms and agronomic characteristics of saffron (Crocus sativus L.) a field experiment was conducted at the Agricultural and Natural Resources Research Center of Mashhad. This experiment ...
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In order to investigate the effect of planting density and maternal corm weight on some characteristics of daughter corms and agronomic characteristics of saffron (Crocus sativus L.) a field experiment was conducted at the Agricultural and Natural Resources Research Center of Mashhad. This experiment was carried out as a factorial split plot in time based on complete block design with three replications and 12 treatments during the years 2010-2014. The experimental factors were 3 levels of density (40, 80 and160 corm in m2) and 4 levels of mother corm weight (≤3, 3-6, 6-9 and 9-12 g per corm) as a main plot and time as a sub plot. The results showed that density, maternal corm weight and year had significant effects on daughter corm’s weight, but the effect of interaction density × corm weight and density × weight × year were not significant for the most characteristics. The mean comparison of interaction effect of density × weight for number of daughter corm showed that maternal corm weight (9-12 g) × planting density (160 m2) had the highest number for daughter corms (771 m2). Maternal corms with higher initial weight produced the highest number of corms in different corm classes. In addition, the results showed that maternal corm with lower initial weight produced heavy daughter corms compared to other maternal corm weight classes. Flower weight and stigma dry weight of saffron (m2) were increased by increasing planting density and maternal corm weight flower number. The highest dry stigma (0.65 g.m-2) yield was produced by maternal corm (9-12 g per corm) weight class.
