Agriculture and horticulture
M. Nikbakht; M. Solouki; M. Aran
Abstract
To study the effects of foliar application of Zn element via nano- and chemical fertilizers on quantitative and qualitative characteristics of medicinal plant bitter apple (Citrullus colocynthis L.), an experiment was conducted in a randomized complete blocks design with three replications at the Agricultural ...
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To study the effects of foliar application of Zn element via nano- and chemical fertilizers on quantitative and qualitative characteristics of medicinal plant bitter apple (Citrullus colocynthis L.), an experiment was conducted in a randomized complete blocks design with three replications at the Agricultural Research Institute of Zabol University in 2019. Experimental treatments included foliar application of zinc nano-chelate at two concentrations (1000 and 2000 mg L-1), zinc sulfate at two concentrations (1000 and 2000 mg L-1), and control (water foliar application). The results showed that foliar application of Zn had a significant effect on the yield and number of fruits per plant, and the seed phenol content with the highest amount of these traits in zinc nano-chelate treatment at the concentration of 2000 mg L-1. Also, Zn foliar application increased the seed soluble carbohydrate content with the highest amount of this index in zinc nano-chelate treatment at the concentration of 1000 mg L-1. Zinc foliar application increased the concentration of Zn element in the leaves, while it did not affect the concentrations of N, P, and K elements. Generally, the application of zinc nano-chelate was more effective on the yield and number of fruits per plant, and seed phenol content than zinc sulfate.
F. Helali Soltanahmadi; M.R. Amerian; M. Ghiyasi; H. Abasdokht
Abstract
The use of organic materials and nano-fertilizers to control the release of nutrients could be an effective step towards achieving sustainable agriculture. Drought stress is the most important factor limiting the growth and yield of medicinal plants including marigold (Calendula officinalis L.). This ...
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The use of organic materials and nano-fertilizers to control the release of nutrients could be an effective step towards achieving sustainable agriculture. Drought stress is the most important factor limiting the growth and yield of medicinal plants including marigold (Calendula officinalis L.). This experiment was conducted under field conditions in a factorial arrangement in a randomized complete block design with three replications (replication in place) in the Research Farm of the Urmia and Salmas Agricultural Research Center. The first factor was irrigation method at two levels including normal irrigation and irrigation cut in the beginning of flowering, and the second factor was priming treatments in seven levels including the seeds primed with nano fertilizers (iron oxide, zinc oxide and oxide with concentrations of two in thousands) and the seeds primed with organic material (humic acid, 72 mg/L, salicylic acid 2000 micromole and ascorbic acid 200ppm) and control. The results indicated that the priming of seeds with nano materials and priming with organic materials caused an increased plant height, number of capitol, fresh and dry weight of the plant, fresh and dry weight of root, grain yield, harvest index, essential oil percentage, and mineral phosphorus percentage as well as increased quantitative and qualitative yield of marigold, especially in drought stress conditions. Therefore, its application could be recommended for sustainable and organic agriculture.
A. Fallahi; A. Hassani; F. Sefidkon
Abstract
Zinc is an essential micronutrient element and has a number of vital roles in plants. In the recent years, zinc nano-fertilizers have received considerable attention due to their increased uptake by plants as they are small in size and have high rate of penetration through plant cell membrane. To study ...
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Zinc is an essential micronutrient element and has a number of vital roles in plants. In the recent years, zinc nano-fertilizers have received considerable attention due to their increased uptake by plants as they are small in size and have high rate of penetration through plant cell membrane. To study the effect of foliar application of different zinc fertilizers on yield and phytochemical characteristics of basil (Ocimum basilicum L.), a pot experiment was conducted using a factorial based on a randomized complete block design with four replications during 2014 at the experimental greenhouse of the Horticultural Sciences Department of Urmia University. The treatments were three different zinc sources (zinc sulphate, zinc chelate and nano-zinc chelate) in four concentrations (0, 1, 2 and 3g/l). The results showed that foliar application of zinc had significant effect on evaluated parameters. Fresh and dry herb yield, zinc and phenol content of leaves, essential oil content, and yield increased with zinc application and in this regard, foliar application of nano-zinc chelate was more effective than two other zinc fertilizers. The lowest and the highest evaluated parameters were observed at concentrations of 0 and 3g/l, respectively. The results of essential oil analysis by gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS) showed that 20 components were identified in the basil essential oil. Linalool and eugenol were the main components of essential oil and they showed little variation under zinc application. Overall, the findings of this study showed that the effect of nano-zinc chelate application (especially at a concentration of 3g/l) was more effective than zinc sulphate and zinc chelate in increasing herb yield and active substances of basil.
