Soheila Kamari; Gholamali Peyvast; Mahmood Ghasemnejad
Abstract
Humic acid, which has hormone- like activity , not only enhances plant growth and nutrients uptake but also improve stress tolerance. To determine the effect of humic acid on the yield and vegetative characteristics of tomato an experiment was conducted with tomato cv. `Isabela` in 2008 in a plastic ...
Read More
Humic acid, which has hormone- like activity , not only enhances plant growth and nutrients uptake but also improve stress tolerance. To determine the effect of humic acid on the yield and vegetative characteristics of tomato an experiment was conducted with tomato cv. `Isabela` in 2008 in a plastic tunnel at the Agriculture Faculty, Guilan University using randomized completely design with four treatments (0, 1, 2, 3 mg l-1 humic acid) and three replications. Humic acid was sprayed four times during the vegetation period with 10- day intervals after three weeks of planting. Results showed that humic acid could affect significantly (P
Reza Shahhoseini; Reza Omidbaigi; Davood Kiani
Abstract
Sweet Basil (Ocimum basilicum L.) is one of the most popular medicinal plants that containing essential oil. Essential oil of this plant has been utilized extensively in the food, pharmaceutical and cosmetics industries. In this study, a pot experiment was conducted to evaluate the effect of biological ...
Read More
Sweet Basil (Ocimum basilicum L.) is one of the most popular medicinal plants that containing essential oil. Essential oil of this plant has been utilized extensively in the food, pharmaceutical and cosmetics industries. In this study, a pot experiment was conducted to evaluate the effect of biological fertilizers of biosulfur, nitroxin and super absorbent polymer and their interactions on the growth and essential oil content of sweet basil (Ocimum basilicum L.) in the randomized complete block design (RCBD). Aerial parts of plants were harvested at full bloom and evaluated their yield index. All material were air-dried in the shade and subjected to hydrodistillation by Clevenger type apparatus. The results of this study showed that there was a significant difference among the treatments in terms of dry herbage weight at 1% level. The highest yield was obtained in (biosulfur+nitroxin+super absorbent). There was no significant difference in essential oil content according to v/w, but there was the significant difference between treatments in terms of w/w. The highest oil content (w/w) was observed in biosulfur+nitroxin treatment. These differences are probably due to variation in the constituents and specific gravity of the oils.
Hossein Nastari Nasrabadi; Seyyed Hossein Nemati; Alireza Sobhani; Hossein Arouiee
Abstract
Using mulch to decrease and optimize water use is known as a practical method. For this purpose, a split-factorial experiment based on complete block design with three replications on two melon cultivars was conducted in spring season of 2010 in Torbat-e-Jam. Interval irrigation treatments in three ...
Read More
Using mulch to decrease and optimize water use is known as a practical method. For this purpose, a split-factorial experiment based on complete block design with three replications on two melon cultivars was conducted in spring season of 2010 in Torbat-e-Jam. Interval irrigation treatments in three levels (6, 8 and 10 days) were considered as main plot and mulch (straw plus paddy rice, plastic and no mulch) and cultivar (Khatooni and Ghasri) were considered as sub plots in a factorial design. Results showed that there was a significant difference between plactic mulch and the control and also between interval irrigation treatments for fruit yield, ripening period, suger percentage, fruit weight and number of fruits on plants .Interaction effect observed between interval irrigation and mulch for number of fruits on plants, marketable fruit, yield and ripening period traits. The shortest period of ripening was observed for the 8 and 10 dey interval irrigation together with plastic mulch. Plactic mulch caused the suger percentage of both cultivars to increase as well. Plactic mulch for 6 day interval irrigation caused yield and fruit quality to decrease, but it caused yield and fruit quality to increase for more than 8 day interval irrigation. Regarding the advantages of plactic mulch which is the decrease of water use and the improvement of yield and fruit quality, using plactic mulch is recommended for dry land.
