Showing 3 results for Basil
- Mahbobe Rashidi, Dr Mohammad Kazem Souri, Dr Mohammad Hossein Kianmehr,
Volume 8, Issue 3 (12-2017)
Abstract
Nitrogen (N) fertilizers are widely used in vegetable production, particularly in leafy vegetables such as sweet basil. Nitrogen fertilizers have high solubility and low efficiency rates and in cropping systems are applied in high amounts that result in different health and environmental problems. Despite their high application, however, the plant’s need of N may not be meet. In this study, growth and production of sweet basil was investigated under application of urea in pellet forms under greenhouse conditions. Treatments were control (without fertilizer application), urea, pellet with low compaction+35% urea, pellet with low compaction+50% urea, pellet with high compaction+35% urea, and pellet with high compaction+50% urea (w/w) with 4 replications in completely randomized design. Rotted cow-manure was used to make the pellets. Results showed that the highest leaf number per plant, as one of the main yield components in leafy vegetables, the highest plant height and chlorophyll index were in pellet with low compaction+35% urea treatment. The highest length and width of leaf as well as the highest plant fresh weight were obtained in pellet with low compaction+50% urea treatment, while the highest dry weight of plant was recorded for pellet with low compaction+35% urea treatment. The highest leaf N concentration was in urea treatment. Regarding the percentage of essential oil, plants in pellet with low compaction+50% urea as well as urea treatments showed the highest amount. In general, low compaction+50% urea treatment showed the best results and could be recommended to be applied in sweet basil production.
B. Abdolahipour, M. Haghighi,
Volume 10, Issue 2 (8-2019)
Abstract
The use of organic materials is increasing in agriculture and industrial products due to their less side effects than chemical materials. In order to study the effect of pine wood vinegar (Pyroligneous acid) on growth and physiological traits of basil, two experiments were designed and conducted in 2014, based on a completely randomized design with 6 treatments (0, 1250, 2000, 2500, 3333 and 5000 mg/L) and 4 replications. The first experiment was conducted in the laboratory in order to study the wood vinegar priming on basil seeds and the second experiment was performed in the Research Greenhouse of College of Agriculture, Isfahan University of Technology. Application of 1250 mg/L wood vinegar increased germination percentage of the basil seeds and 2500 mg/L treatment speeded up the germination process. In the second experiment, maximum volume and length of roots were observed in the 3333 mg/L treatment and the highest root surface was measured in the 5000 mg/L treatment. Nitrogen concentration in the 3333 mg/L treatment, potassium concentration in the 5000 mg/L treatment, and calcium and iron concentrations in the 1250 mg/L treatment were at the highest level compared to other treatments. Chlorophyll fluorescence, SPAD, ion leakage and chlorophyll a content showed the highest levels in the 3333 mg/L treatment. Based on the results of the second experiment, most growth parameters of the basil were at the highest level by application of 3333 mg/L pine wood vinegar. Therefore, this concentration of pine wood vinegar can be recommended.
B. Esmaielpour, H. Fatemi, M. Moradi,
Volume 11, Issue 1 (4-2020)
Abstract
Drought stress is one of the most important restricting factors for plant yield in arid and semi-arid regions. Seaweed extract, as a biofertilizer, enhances plant resistance against abiotic stresses via accelerating seed germination, root growth enhancement and uptake of plant nutrients. The present research was carried out to investigate the effects of foliar spraying of Ascophyllum nodosum seaweed extract on physiological and biochemical characteristics of basil (Ocimum basilicum L.), Shahre-ray local cultivar, under drought-stress conditions, as a factorial experiment, based on completely randomized design with three replications. Experimental factors included drought stress (full irrigation (control), irrigation holding at first stage of flowering, irrigation holding at 50% of flowering) and foliar spraying of different concentrations of seaweed extract (0, 0.5, 1 and 2 g/L). Control plants were sprayed with distilled water. Results indicated that as drought-stress intensity was increased, morphological traits such as number of lateral shoots, fresh and dry weights of plant, number of leaves, leaf area, root dry weight and biochemical parameters such as chlorophyll a, chlorophyll b, total chlorophyll, carotenoid content and relative water content of leaves were reduced, while free proline content of leaves and electrolyte leakage from cell membranes were increased. Foliar spraying of 2 g/L seaweed extract significantly reduced the effects of drought stress on basil plants. In general, the results of this research indicated that exogenous application of seaweed extract enhanced basil plant growth under drought-stress conditions via increasing proline content, osmotic adjustment, inhibition of chlorophyll degradation and decreasing the electrolyte leakage.
