جستجوی مقالات مرتبط با کلیدواژه « عملکرد میوه » در نشریات گروه « آب و خاک »

In this pot experiment, the effects of three levels of zero (A0), three (A1) and five gram (A2) aquasorb superabsorbent per kg of soil, three levels of 70 (W1), 85 (W2) and 100 (W3) percent of irrigation requirements and two levels of 75 (F1) and 100 (F2) percent of nitrogen fertilizer requirements were studied on some traits of bell pepper plant. The experiment was factorial based on randomized complete block design with 18 treatments and three replications. The results showed significant effect of superabsorbent and irrigation treatments on all components except stem diameter. Among the superabsorbent treatments, the highest fruit yields (666.2 gr) and water productivity (12.36 kg/m3) were obtained in A2 treatment. Among the irrigation treatments, the highest values of the mentioned functions were obtained in the W3 and W1 treatments with 621.81 g and 10.57 Kg/m3 respectively. The effect of fertilizer treatments on shoot weight, root and fruit yield was significant. The highest fruit yield was 638.70 g in F2 treatment. The interaction of two variables of water with superabsorbent with effect on fresh and dry weight of shoot and root and on yield and water productivity yielded the highest fruit yield (916.65g) and productivity (14.55kg/m3) in A2W3 treatment. The interaction effects of superabsorbent and fertilizer showed that the highest yield and water productivity were equal to 670.51 grams and 12.44 kg / m3 in A2F2 treatment. The interactions of water and fertilizer showed that the highest yield and water productivity were 625.59 g in W3F2 and 12.32 kg/m3 in W1F2 treatment. The interaction of three superabsorbent, water and fertilizer variables on all studied traits was not significant

In order to evaluate the effect of different levels of drought stress and nitrogen fertilizer on growth of strawberry plants, present study was conducted in the Mazandaran province in 2010. Experiment was carried out as factorial based on randomized complete block design with three replications. Drought stress treatments (30, 50 and 70% Maximum allowable depletion of moistur (MAD)) and nitrogen fertilizer (0, 100 and 150 Mg per Kg dry soil) were allocated to main and sub-plots, respectively. The results showed that the effect of of different levels of drought stress and nitrogen fertilizer were significant on sam indices as, number and length of stolons, number and leaf area, fresh and dry weight of root, length and total yield of plant, fresh and dry weight of plant, diameter and fruit weight under drought stress. In all indices, the highest averages were obtained in treatment of 30% MAD and 100 mg nitrogen. The highest fruit yield was obtained in treatment of 30% MAD and 100 mg nitrogen fertilizer with 9.17 and 8.15 gr, respectively. In intraction of drought stress and nitrogen fertilizer the highest fruit yield with 9.69 gr was obtained by 30% MAD and 100mg nitrogen fertilizer. Minimum fruit yield with 35% reduction was related to 70% MAD and without the use of nitrogen fertilizer.