Agriculture
Roohollah Saeidi Aboueshaghi; Heshmat omidi; Amir bostani
Abstract
In order to investigate the effect of chicken manure and chemical fertilizers on some morphological characteristics and yield flowers and replacement corms of saffron under irrigation regimes, a split plot experiment on the basis of complete randomized block design was conducted at the shahrekord and ...
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In order to investigate the effect of chicken manure and chemical fertilizers on some morphological characteristics and yield flowers and replacement corms of saffron under irrigation regimes, a split plot experiment on the basis of complete randomized block design was conducted at the shahrekord and two consecutive crop years (2018-2019 and 2019-2020) with three replications. Irrigation as main plot at three levels (Fc (0% moisture depletion), %33 moisture depletion and %66 moisture depletion) and nutrition as sub-plot at six levels (control (without fertilizer application), 100% recommended chemical fertilizer, 100% recommended chicken manure, 25% chemical fertilizer + 75% chicken manure, 50% chemical fertilizer + 50% chicken manure and 75% chemical fertilizer + 25% chicken manure) were used. Chicken manure at a rate of 3 tons per hectare and chemical fertilizers including: urea 100 kg, potassium sulfate 150 kg, triple superphosphate 50 kg, iron sulfate 45 kg, zinc sulfate 15 kg and manganese sulfate 20 kg, all per hectare based on soil decomposition and the plant needs, were used. Also, the morphological traits and production of flowers and replacement corms was evaluated. The results showed that the interaction effect of year × irrigation × nutrition on all studied traits except leaf number, leaf length and replacement corm diameter was significant at 1% level. The mean comparison compound of the interaction of year × irrigation × nutrition showed that the highest dry yield of stigma and style in the second year, under %33 moisture depletion and 75% chicken manure + 25% chemical fertilizer treatment at the rate of 9.21 kg /ha and the lowest amount In the first year, %66 moisture depletion and control was obtained at the rate of 3.3 kg / ha. With increasing water stress intensity, the effect of 75% chicken manure + 25% chemical fertilizers treatment on the yield of replacement corm increased compared to the control and the effect of this treatment in the second year was more compared to the first year, so that in the first year and field capacity (%0 moisture depletion), increasing yield of replacement corm in this treatment compared to the control was 3.2%, in %33 moisture depletion 11.8% and in %66 moisture depletion, 26.7% , and in the second years, was respectively 11.2%, 15.5% and 38.9%. Therefore, this treatment had the highest effect on increasing the yield of saffron stigma and style in all irrigation regimes in this experiment.
Agriculture
Abbas Khashei Siuki; Mohsen Ahmadee; Sayyed Reza Hashemi; Amin Chaalaak
Abstract
Saffron (Crocus sativus L.) is a subtropical and valuable crop which is reproduced by corms. Due to the importance of corm weight in saffron yield, it is important to study the different factors that affect yield such as drought stress. For this purpose, this research was conducted as a factorial design ...
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Saffron (Crocus sativus L.) is a subtropical and valuable crop which is reproduced by corms. Due to the importance of corm weight in saffron yield, it is important to study the different factors that affect yield such as drought stress. For this purpose, this research was conducted as a factorial design based on completely randomized design (CRD) in the Agricultural Research Station of the University of Birjand during the period 2013-2015. The treatments consisted of Zeolite at four rates (0: Z0, 0.5: Z1, 1: Z2 and 2: Z3 as weight percentage) and irrigation management at three levels (traditional: I1, deficit irrigation as 70% moisture depletion: I2 and full irrigation: I3) with three replications. The results showed that zeolite rates has a significant effect on corm weight, number of corms less than 2gr, number of 6-8gr corms and number of replacement corms (P≤0.01). Irrigation management also has a significant effect on corm weight (P≤0.01), number of corms 6-8gr and number of replacement corms (P≤0.05). The treatments with no zeolite amended (Z0I1, Z0I2 and Z0I3) showed a reduction in corm weight compared to Z3I3 (P≤0.05). Z3I3, Z3I2 and Z3I3 showed an increase in the number of replacement corms while Z0I1 and Z0I2 had the least number of replacement corms. In conclusion, Z2I1 is recommended as the best treatment by considering the reduction in zeolite and water used, which increased corm weight by 26.64%, 23.88% and 17.81% compared to Z0I1, Z0I2 and Z0I3, respectively.
