Tahereh Ardeshiri; Shahrokh Jahan Bin
Abstract
To evaluate the effect of foliar application of nano iron and zinc chelated fertilizer on yield and agronomic characteristics of canola (Brassica napus L.) cv Hyola 308 hybrid under drought stress, an experiment was conducted in a randomized complete block design with three replications in Ramhormoz, ...
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To evaluate the effect of foliar application of nano iron and zinc chelated fertilizer on yield and agronomic characteristics of canola (Brassica napus L.) cv Hyola 308 hybrid under drought stress, an experiment was conducted in a randomized complete block design with three replications in Ramhormoz, Khuzestan province in 2012 growing season. Main plots consisted of three levels of irrigation: irrigation in the whole the growing season (control), irrigation cut at the green bud stage and irrigation cut at the seed formation stage and foliar application treatment at the beginning of stem elongation and flowering as subplots consisted of four levels: sprayed with water(control), foliar application with Nano-zinc, foliar application with nano-iron, foliar application composition with nano-zinc and nano-iron (each of them was a concentration of two per thousand). The results showed that cut irrigation in reproductive growth stage decreased the grain yield (18%), biological yield (6%) and harvest index (14%). Plant height and the weight of one thousand seeds were influenced by the interaction of irrigation and spray. Most of the seed oil content (45.2%), the weight of one thousand seeds (4.13 g) and plant height (106.5 cm) were related to the irrigation treatment in whole growth stages and foliar application of nano iron and zinc chelate combination. Spraying plants with nano chelate iron and zinc improved plant tolerance and increased yield in drought stress condition in relation to spray by water (control).
Akram Mahdavi; Jafar Masoud Sinaki; Majid Amini dehaghi; Shahram Rezvan; Ali Damavandi
Abstract
In order to evaluate the effects of chemical, biological and nano fertilizers on the yield and quality traits (oil and protein) of sesame seeds under different irrigation regimes an experiment was conducted as a split-plot factorial based on completely randomized blocks design with three replications ...
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In order to evaluate the effects of chemical, biological and nano fertilizers on the yield and quality traits (oil and protein) of sesame seeds under different irrigation regimes an experiment was conducted as a split-plot factorial based on completely randomized blocks design with three replications at Shahed University during 2015-2016 growing seasons. Irrigation withholding levels (full irrigation (control) and irrigation withholding at 65 and 75 BBCH (codes of phonological stages that are equivalent to 50% of flowering and seed ripening respectively) were assigned as main plot and different nitrogen combinations (nitroxin, urea, and a mix of 50% nitroxin plus urea), various combinations of potassium (not used, nano-potassium foliar application (2 per thousand), irrigated use of potassium dioxide (2 L ha−1) and soil application of nano-potassium (2 kg ha−1) were allocated in the subplots. The highest number of per-plant capsules (19.26 numbers) was observed with irrigation up to 50% seed ripening and the use of urea together with the potassium nano chelate foliar application. The greatest grain yield and protein content and yield were obtained in irrigation up to 50% seed ripening in the absence of potassium fertilizer and nitroxin usage (1340.5, 276.53 kg ha−1 and 5-20%, respectively). The oil yield was utmost in irrigation up to 50% flowering and foliar application of potassium nano chelate together with the mixed system of 50% urea fertilizer plus nitroxin with average values of 47.96% and 550.46 kg ha−1, respectively. The use of nitroxin as a nano-bio-fertilizer and foliar application of chelated nano potassium in irrigation withholding conditions up to 50% grain aggregation resulted in increased grain yield (approx. 15% compared to the control) as well as improved quality of sesame seeds.
Raouf Seyed sharif; Reza Seyed Sharifi
Abstract
In order to study the effect of mycorrhiza and foliar nano (Fe and Zn) oxide spraying on yield and some biochemical traits of spring safflower (cultivar Padedeh) under water limitation condition, a factorial experiment was conducted based on randomized complete block design with three replications at ...
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In order to study the effect of mycorrhiza and foliar nano (Fe and Zn) oxide spraying on yield and some biochemical traits of spring safflower (cultivar Padedeh) under water limitation condition, a factorial experiment was conducted based on randomized complete block design with three replications at the research farm of the Islamic Azad University, Ardabil Branch in cropping year of 2014. The experimental factors were included arboscular mycorrhiza application in two levels (with and without mycorrhiza), foliar application of nano zinc oxide in four levels (non-foliar application and foliar application of nano iron oxide, nano zinc oxide and nano zinc oxide + nano iron oxide) and irrigation in three levels [full irrigation as control, irrigation with holding at 50% of flowering and heading-bud stages (moderate and severe water limitation respectively)]. Results showed that water limitation was increased proline content, the activity of catalase, peroxidase, polyphenol oxidase enzymes. Mycorrhiza application and foliar nano (Fe and Zn) oxide spraying improved these traits under water limitation condition and normal irrigation. Means comparison showed that maximum of grain yield (2278.52 kg ha-1) was obtained at application of mycorrhiza, nano oxide of Zn+Fe and full irrigation. Minimum of it (834.25 kg ha-1) was obtained in non-mycorrhiza, no application of nano oxide and irrigation to heading-bud stage. Application of mycorrhiza and nano oxide of Zn+Fe increased grain yield by 35.9% as compared with non-mycorrhiza, non-foliar application of nano oxide under severe water limitation. It seems that mycorrhiza and nano oxide of Zn+Fe application is usable for profitable safflowerproduction under water limitation condition.