Seyed Ali Mohammad Modarrs-Sanavy; Amin Safaralizadeh; Ali Heidarzadeh
Abstract
In order to examine the impact of biofertilizer on the essential oil and seed yield of Moldavian balm, a factorial experiment with a randomized complete block design and three replications were designed at the Khoy Agricultural Research Center in the West Azerbaijan Province. Five fertilization levels ...
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In order to examine the impact of biofertilizer on the essential oil and seed yield of Moldavian balm, a factorial experiment with a randomized complete block design and three replications were designed at the Khoy Agricultural Research Center in the West Azerbaijan Province. Five fertilization levels were applied: 100% urea (70 kg N ha−1), 75% urea (52.5 kg N ha−1) + 25% azocompost (3.85 ton ha-1), 50% urea (35 kg N ha−1) + 50% azocompost (7.77 ton ha-1), 25% urea (17.5 kg N ha−1) + 75% azocompost (11.55 ton ha-1), and 100% azocompost (1555 ton ha-1) on two Moldavian balm landrace (Urmia and the modern cultivar SZK-1). The results of this study indicated that a 100% urea fertilizer regime produced the highest dry herbage yield. The highest seed yield was achieved with a 100% urea fertilizer application of approximately 1,122 kg ha-1. Inoculating seeds with Azotobacter and Azospirillum bacteria resulted in the highest harvest index, with a value of 22.4 percent. The Urmia landrace genotype had the highest yield of essential oil (20.5 kg ha-1). Based on the findings, the 50% urea + 50% azocompost fertilizer treatment had the greatest effect on the majority of the investigated characteristics.
Mehri Mashayekhi; Mohammad Esmaeil Amiri; Fariborz Habibi
Abstract
The effect of drought stress induced by polyethylene glycol (PEG-6000) on the growth and mineral uptake of GF677 (peach and almond hybrid) rootstock was investigated in vitro using solid and liquid mediums. Plantlets of the GF677 rootstock were subcultured into the Murashige and Skoog (MS) proliferation ...
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The effect of drought stress induced by polyethylene glycol (PEG-6000) on the growth and mineral uptake of GF677 (peach and almond hybrid) rootstock was investigated in vitro using solid and liquid mediums. Plantlets of the GF677 rootstock were subcultured into the Murashige and Skoog (MS) proliferation medium containing 1 mg/l BA (6-Benzyladenine) and 0.1 mg/l NAA (naphthaline acetic acid) under four different drought stress conditions: 0 (control), 1, 2, and 3 percent polyethylene glycol. After six weeks, results indicated that the highest drought level reduced fresh weight, dry weight, shoot length, and proliferation rate, with the reduction being greater in the solid medium than in the liquid medium. Leaf abscission was greater in the solid medium than in the liquid medium. In the liquid medium, the GF677 rootstock absorbed more nitrogen (N) than in the solid medium. Drought stress had no effect on phosphorus (P) uptake. Potassium (K) uptake increased when drought levels were evaluated in both mediums, but was greater in the liquid medium than in the solid medium. Calcium (Ca), magnesium (Mg), and iron (Fe) uptake decreased in both mediums as drought levels increased. The GF677 rootstock was capable of uptake of N and K at a high concentration. Mineral uptake was greater in a liquid medium than in a solid medium. In conclusion, the GF677 rootstock exhibited a high capacity for N and K uptake under drought stress.
