H. Abedini Aboksari, D. Hashemabadi, B. Kaviani,
Volume 6, Issue 2 (8-2015)
Abstract
Application of bio-fertilizers and organic compounds is a way to reduce the use of chemical fertilizers. In order to study the effects of organic compounds and phosphate bio-fertilizer on some quantitative and qualitative attributes of ivy geranium (Pelargonium peltatum), a factorial experiment based on randomized complete blocks design (RCBD) was carried out using two factors including phosphate bio-fertilizer (Barvar 2) and different substrate in 16 treatments, 4 replications, 64 experimental plots with 256 plants. Phosphate bio-fertilizer (Barvar 2) at two levels (B0: non-application and B1: application of the Barvar 2) and different substrates including 8 treatments (M1: garden soil + sand, M2: garden soil + cocopeat + solid waste compost, M3: garden soil + sand + water tank soil, M4: garden soil + cocopeat + water tank soil, M5: garden soil + sand + solid waste compost, M6: garden soil + sand + solid waste compost + water tank soil, M7: sand + leaf mold + cocopeat + solid waste compost, M8: sand + tea compost + cocopeat + water tank soil) (v/v) were applied. In this study, leaf number, leaf area, inflorescence number, concentration of petal anthocyanin, shoot and root dry weight and shoot phosphorus amount were evaluated. Results showed that both main effects and interactions were significant on all traits. The best treatment was M8B1 (sand + cocopeat + tea compost + water tank soil) along with the Barvar 2 compared to the other treatments. Plants grown in this cultivation bed showed the highest performance in traits such as leaves and inflorescences numbers, with an average of 59.25 leaves and 5.9 inflorescences per plant, among the treatments. Barvar 2 along with this substrate can be used instead of phosphate chemical fertilizer for the better growth of ivy geranium plant.
M. Najafi, H. Arouiee, M.h. Aminifard,
Volume 12, Issue 4 (3-2022)
Abstract
The present study was aimed to evaluate the effect of organic fertilizers of folic acid and amino acids (glycine and glutamic acid) on the plant resistance to stress and yield of cucumber under deficit irrigation conditions. The study was carried out as a factorial in randomized complete blocks with 3 replications. The first factor was fertilization at four levels as control, 200 mg/l folic acid, amino acid glycine and glutamic acid (6 liters per ha), and folic acid + amino acids (glycine and glutamic acid). The second factor was irrigation interval (3, 5 and 7 days). The results showed that an increase in irrigation interval caused a significant reduction in plant dry and fresh weights, internode length, root and shoot lengths, stomatal conductance and chlorophyll contents. Furthermore, combined use of folic acid and amino acid and 7 day irrigation interval increased root length, internode length, leaf area, chlorophyll a and relative leaf water content by 159, 46.9, 84.7, 138 and 36%, respectively, when compared with the control at the same irrigation interval. In addition, a 70% increase in plant fresh weight and 84% increase in fruit weight were observed in irrigation interval of five days and combined treatment of amino acid and folic acid. In general, it can be concluded that the combined application of amino acids and folic acid improved the morphophysiological characteristics of cucumber under deficit irrigation conditions, while it was not effective in improving yield and fruit production with the seven-day irrigation interval.
