• List of Articles fruit yield

      • Open Access Article

        1 - Evaluation of Yield and Yield Components of Okra (Abelmoschus esculentus L.) in Different Treatments of Irrigation Distance and Sowing Date
        Sahar Keyvan Rad Hamid Madani Hossein Heidari Sharifabadi Mojtaba Mahmoudi Ghorban Nourmohamadi
        To evaluate different irrigation regimes and planting dates on plant height, stem diameter, yield, and yield components of okra (Abelmoschus esculentus L.) a split plot experiment based on randomized complete blocks with three replications was conducted in Karaj during More
        To evaluate different irrigation regimes and planting dates on plant height, stem diameter, yield, and yield components of okra (Abelmoschus esculentus L.) a split plot experiment based on randomized complete blocks with three replications was conducted in Karaj during 2017 growing season. Experimental treatments were irrigation intervals (8, 10 and 12 days) as a main plot, and planting dates with three levels (4th, 18th of June and 2th July) as a sub-plot. The results of analysis of variance showed that the main effect of irrigation interval was significant on all traits under study. Planting date treatment had a significant effect only on plant height, stem diameter, number of plant branches, number of plant leaves, number of fruits, fresh fruit yield and dry fruit yield. The interaction of irrigation interval treatment and planting date had no significant effect on the trails under study. The highest chlorophyll concentration (3.68 mg.g-1 FW), plant height (100.4 cm), number of branches (3.1), number of leaves per plant (24.8), number of fruits per plant (10.5) and fresh fruit yield (4023 kg.ha-1) were belonged to the irrigation interval of 8 days. Irrigation interval of 12 days decreased by 30.4, 21.7, 21.3 and 28.4 % in stem diameter, fruit length, fruit diameter and dry fruit yield, compared to irrigation interval of 8 days interval, respectively. The highest plant height (99.2 cm), number of branches (2.5), number of leaves per plant (23.3) and number of fruits (9.77) were observed of June 4th planting date. The highest fruit yield was obtained in June 18th planting. Based on the results obtained it can be concluded that irrigation interval of 8 days is recommended to achieve maximum fruit yield and to shorten the length of growing period, saving in water consumption and maximum yield performance in the Karaj region, the date of 18th June is recommended. Manuscript profile
      • Open Access Article

        2 - Piriformospora indica inoculants enhance flowering, yield, and physiological characteristics of tomato (Lycopersicon esculentum) in different growth phases
        Esmaeel Kaboosi Mehdi Ghabooli Rouhollah Karimi
      • Open Access Article

        3 - The Effect of Nitrogen Rate and Plant Density on Morphological Traits and Essential Oil Yield of Coriander
        G. Moosavi M. Seghatoleslami A. Ebrahimi M. Fazeli Z. Jouyban
        In order to study the effect of nitrogen rate and plant density on morphological traits and essential oil and fruit yield of coriander, a split-plot experiment was carried out in research field of Islamic Azad University, Birjand Branch, Birjand, Iran in 2010 based on a More
        In order to study the effect of nitrogen rate and plant density on morphological traits and essential oil and fruit yield of coriander, a split-plot experiment was carried out in research field of Islamic Azad University, Birjand Branch, Birjand, Iran in 2010 based on a randomized complete block design with three replications. The main plots were nitrogen rates at four levels (0, 40, 80 and 120 kg N/ha) and the sub-plots were plant densities at three levels (30, 40 and 50 plants/m2). The results showed that nitrogen rate had significant effect on fruit yield, essential oil percent and yield traits and interaction between nitrogen rate and plant density only affected fruit yield but change in plant density significantly affected all traits except essential oil percent. Means comparison showed that as N fertilization rate was increased from 0 to 80 kg N ha-1, plant height and fruit yield were increased by 19.8 and 74.1 %, respectively. Also, essential oil percent increased from 0.153 to 0.33% and essential oil yield was greater 2.68 times. Moreover, means comparison showed that the increase in plant density from 30 to 50 plants/m2, increased plant height, first fruit distance from ground, fruit and essential oil yield by 14.3, 27.6, 31.3 and 36.8%, respectively while stem diameter and branch number per main stem were decreased by 22.2 and 13.9%, respectively. Given the results of the study, the treatment of 80 kg N/ha application with the density of 50 plants/m2 recommended for the cultivation of coriander in Birjand, Iran. Manuscript profile
      • Open Access Article

        4 - Effect of two methods of direct planting and transplanting on rate of dodder parasitizing of commercial tomato cultivars
        Z. Moradi M. Madandost F. Sadeghi
        In tomato, parasite plants such as dodder that is a stem parasite has a major effect on yield. To control and keep the host from their harmful effects it is needed to use selective herbicides. Therefore other control methods are needed. In order to evaluate the effects More
        In tomato, parasite plants such as dodder that is a stem parasite has a major effect on yield. To control and keep the host from their harmful effects it is needed to use selective herbicides. Therefore other control methods are needed. In order to evaluate the effects of transplanting and direct planting methods of tomato cultivars on dodder (Cuscuta sp) parasitizing, a greenhouse experiment was conducted at Islamic Azad University of Shiraz, in 2012. The experiment was based on a randomized complete design (RCD) with factorial arrangement with three replications. The first factor was tomato cultivars (Falat CH, Petoldoli and Fk) and the second factor was different methods of planting (direct and transplant). Analysis of variance showed significant differences among cultivars for plant height, fruit yield and root fresh weight. The highest and lowest fruit yields were obtained from Falat Ch (40.82 g) and Petoldoli (24.41 g), respectively. In relation to the effect of planting methods, the results showed that plant height, fruit yield and diameter and fresh and dry weights of tomato were higher in direct planting method than transplanting while dry weight of dodder was higher in transplanting method. The results also showed that reduction in tomato Falat CH yield was higher than Petoldoli and Fk and this cultivar was more resistant to be parasitized by dodder. Manuscript profile