Agriculture
Zohreh Natavan; Rooholla Moradi; Mahdi Naghizadeh; Nasibeh Pourghasemian
Abstract
In order to study the effect of different chemical and organic mulch types on various soil characteristics and qualitative and quantitative yield 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. ...
Read More
In order to study the effect of different chemical and organic mulch types on various soil characteristics and qualitative and quantitative yield 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 black and transparent polyethylene significantly improved the potassium contents of soil compared to hand weeding treatment. Treatments of beeswax waste (0.083%), pistachio leaf (0.081%) and transparent polyethylene (0.080%) included the highest amount of soil nitrogen. The highest amount of carbon (0.838%) and soil organic matter (1.17%) was also observed in beeswax waste mulch treatment. This treatment also led to soil acidification compared to other treatments. Application of all the mulches except transparent polyethylene caused a significant increase in stigmas yield of saffron compared to non-weeding conditions. Beeswax waste and wheat straw had the highest stigma yield (4.89 and 4.32 kg ha-1), respectively; which these increased the stigma yield by 213% and 177% compared to the no weeding treatment. Black polyethylene, pomegranate leaf and grape leaf did not show a significant difference with hand weeding in terms of stigma yield of saffron. The highest amount of safranal, crocin and picrocrocin in saffron was obtained to the black polyethylene mulch treatment. In general, the results confirmed that the application of all the studied mulches with the exception of transparent polyethylene led to improving soil characteristics and saffron yield compared to no weed control treatment and are recommended to farmers.
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. ...
Read More
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
Mahdi Naghizadeh; Mahmood Gholami shabestari; Mohadeseh shamsaddin saied
Abstract
In order to study some physiological responses of saffron under saline conditions, three landraces of saffron which were collected from Gonabad, Ferdows and Torbat-e-Heydarieh were compared under 0, 3, 6, 9 and 12 dS/m electrical conductivity of saline water during two years under a rain shield in pots ...
Read More
In order to study some physiological responses of saffron under saline conditions, three landraces of saffron which were collected from Gonabad, Ferdows and Torbat-e-Heydarieh were compared under 0, 3, 6, 9 and 12 dS/m electrical conductivity of saline water during two years under a rain shield in pots in a randomized complete block design with three replications at the Research Center of Yazd which three levels of the landraces and five salinity levels were distributed as factorial. After uniform emerging of the buds, NaCl solutions with the above mentioned levels of salinity were used gradually for pots irrigation with 30% leaching fraction in order to control soil water salinity in desired levels. The results showed that with increasing salinity, relative water content 6.26%, dry weight 19.80%, the total number of leaves 17.042%, the dry weight of corm 49.42%, the concentration of sugars in the leaves and corms 43.36 and 23.72% were reduced and corms and leaves ion leakage 34 and 27%, sodium concentration70%, sodium to potassium ratio 66.66% and proline in leaves 2.88 times were increased that in most cases these fluctuations were observed in 3dS/m of irrigation water.
