ملخص البحث :

Abstract: Four sites were selected from the soils that differ in soil texture and in the area extending from the river shouldersof the Euphrates River and west towards the Great Al-Musayyib project. To study the state of potassium adsorption, thesamples were taken, dried aerobically, then sieved through a sieve with a holes diameter of 2 mm, and 1 gm of each type oftissue was taken from it and placed in polyethylene tubes with a capacity of 100 ml, then 30 ml of potassium solution wasadded to it with the following concentrations: 20, 40 and 80 and 100, 120, 140, 160 and 180 mg .L-1, which were prepared frompotassium sulfate salt and described the adsorption process using Lankmeyer linear equation. The most important resultsindicated that the highest value of adsorbed potassium was 80.8 mg kg-1 in the clay soils, while the lowest value was 64.9 mgkg-1 in the sandy mixed texture soils. The amount of adsorbed potassium increased as the amount of potassium was added tothe release solution, and there was a positive effect of the separated clay and organic matter in increasing the values ofadsorbed potassium, while the effect was negative with the soil properties of separated sand and carbonate minerals.

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Abstract: The study was conducted in one of the private nurseries in Al6-Yusufiyah region belonging to Al-Mahmoudiyahdistrict, to study the effect of the irrigation periods at two levels (irrigation every 3 days, irrigation every 6 days) and twolevels of organic matter with a concentrations of (5, 10 g.seedlings-1) and three levels of fractionation of fertilizer additionPotassium at a concentration of (120 kg K2O.ha-1), which was added in three batches, including 30 days in the growth ofseedlings Mandarin grafting on the origin of Sour Orange. The experiment was conducted according to a Completelyrandomized design with three replicates and the results were summarized as follows: The treatment of irrigation after every 6days significantly excelled in all vegetative growth traits, which included the seedlings length, number of leaves, leaf area, drymatter of the plant and leaf content of chlorophyll, nitrogen, phosphorus and potassium and gave the highest averagesamounted to 55.06 cm, 32.01 leaf, 20.32 cm2, 36.41 g, 34.44 spad, 1.60%, 0.31% and 1.33%, respectively, compared to theirrigation treatment after every 3 days. Where the addition of the organic matter treatment (10 g.seedlings-1) significantlyexcelled for the above traits and gave the highest averages amounted to 53.29 cm, 31.76 leaves, 20.36 cm2, 36.62 g, 34.06 spad,1.58%, 0.31% and 1.28%, respectively compared to the treatment 5g.seedlings-1, where the addition of potassium fertilizertreatment was significantly excelled by giving the highest values for all studied vegetative traits amounting to 65.71 cm, 8.51mm, 6.12 branches, 37.25 leaves, 21.53 cm2, 39.43 g, 38.50 spad, 1.77%, 0.35% and 1.81%, respectively.Key word: Irrigation periods, Organic fertilizers, Potassium, Mandarin, Irrigation water.

ملخص البحث :

Abstract A field experiment was conducted in the non-heated plastic house at Al-Mussiab Technical College for the autumn season 2017 to study the response of sweet pepper (Qurtuba cultivar) Capsicum annum L. to foliar spraying with two typed of Nano fertilizers in loamy sand soil. A factorial experiment was designed according to the full RCBD design, and the middles are compared by choosing the least significant difference LSD and a significant level of 5%. To study the of Iron-Nano at four levels (0, 1, 2, and 3 gm. L-1) and four levels of Nano-zinc fertilizer (0, 1, 2, and 3 gm. L-1) with three replicates, (2 gm. L-1 NanoFe). The results indicated to the excelling of the spraying treatment was superior (2 gm. L-1) which significantly increased in plant height, number of fruit branches, leaf area of plant, dry weight of vegetative group, leaf content of chlorophyll, nitrogen, phosphorus and potassium. The number of fruits, fruit weight, and early and total yield with an increase Percentage of (30.40, 50.82, 16.55, 17.97, 25.46, 38.19, 31.37, 38.19, 16.17, 18.50, 34.69, and 40.57 %) for the above traits sequentially. Which is the same behavior as the spraying of zinc Nano at a concentration of (2- gm.L-1) for the traits of plant height, number of fruit branches, dry weight of the vegetative group, leaf content of chlorophyll, nitrogen and potassium and the number of fruits and fruit weight and the early and total yield with increase Percentage (25.55, 39.95, 27.93, 36.65, 29.53, 26.0, 20.38, 15.95, 40.43 and 41.78%) sequentially as compared to the control treatment. Where (3gm. L-1) was excelled in spraying treatment with Zinc Nano, in the traits leaf area and leaf content of phosphorus, where the percentages of increase amounted of (18.17% and 24.53%) sequentially. As for interaction treatments, it showed excelling the spraying treatment with a mixture of iron and zinc Nano (2 gm. L-1 + 2 gm. L-1) by giving it the highest values for all the above traits. Key words : sweet peppers, Qurtuba, Nano fertilizers, Fe and Zn.2

ملخص البحث :

Abstract The study was conducted at the Al-Hindiya Gardening Station (Karbala province), To study the effect of spraying 3 levels of nano zinc (0, 2, 4 g.L-1) and two levels of humic acid solution (2, 4 ml.L-1) and adding urea mineral fertilizer at two levels (5, 10 g.seedlings -1) in the growth of pear seedlings, Hollywood cultivar grafted on apricot seedlings. The experiment was conducted according to completely randomized designs with three replicates, and the results were as follows: The treatment of zinc at a concentration of (2 ml.L-1) was significantly higher in all vegetative growth traits that included seedlings length, stem diameter, number of leaves, leaf area, dry material of the plant and leaf content of chlorophyll and zinc and gave the highest averages of 84.20 cm, 7.62 mm, 40.70 leaf.seedling-1, 23.67 2 cm2, 42.28 g, 30.27 spad, 9.71 mg.100 g-1, respectively, by comparison treatment, Where, the treatment with a humic acid concentration of 4 ml. Liters -1 was excelled on the above traits and gave the highest averages amounted to 78.17 cm, 7.04 mm, 41.73 leaf.seedling-1, 23.64 cm 2, 43.53 g, 29.17 spad, 9.34 mg.100 g-1 in respectively compared to the treatment of 2 ml.L-1, the treatment of adding urea mineral fertilizer at the level of (10 gm.seedling-1) was significantly excelled by giving the highest values of all studied vegetative traits amounted to 77.89 cm, 7.18 mm, 39.87 leaf.seedling-1, 22.45 cm 2, 42.19 g, 28.64 spad, 9.39 mg. 100 g -1 respectively Keywords: term, term, term

ملخص البحث :

Abstract: The effects of different levels of urea spray (0, 0.5, 1, 2%) with a total number of five spraying. The interval between each spray was one month. The second-factor addition of potassium fertilizer (potassium sulfate) applied of partitioning for five batches, the concentration of potassium sulfate was 50 g per seedling. The results revealed that a significant association of the concentration of the urea and growth indicators of the seedlings, by giving the highest averages for seedling length, stem diameter, total leaves number, leaf area, dry weight, the leaves content of chlorophyll, nitrogen, phosphorus, and potassium. Similarly, the potassium fertilizer application was significantly correlated to the growth indicators for a citrus seedling. However, the urea alone or combined with the addition of potassium at the early stages of growth could be useful in improving seedling quality.

ملخص البحث :

Abstract: A field experiment was conducted in the non-heated plastic house at Al-Mussaib Technical College for the autumn season 2016 to study the response of sweet pepper L. to foliar spraying with two types of foliar commercial potassium fertilizers in loamy Capsicum annuum sand soil. The four levels of potassium fertilizer and micronutrients (0, 4, 6, 8 ml.L ) and four levels of potassium fertilizer and sulfur KTS (0, 2, 4, -1 6 ml.L ) and their interaction on some vegetative and flowering growth indicators, yield and its components was observed. .The spraying with -1 potassium and micronutrient (8 ml.L ) significantly increased the plant height, number of branches, leaf area, dry weight for total vegetative, -1 number of flowers in plant, percentage of fruit set, chlorophyll, nitrogen, phosphorus and potassium in leaves, early , total yield, vitamin C, and total soluble solids compared to control treatment. The spraying of potassium fertilizer and sulfur with micronutrient (4 ml.L ) excelled in all the -1 above traits. The spraying of mixture of (8 ml. L + 4 ml. L ) resulted in highest values for all the above traits.

ملخص البحث :

Abstract---A pot experiment was carried out in the wooden canopy of Musayyib Technical College / Department of Soil and Water Techniques located in Musayyib project using soil with a loam texture brought from Musayyib project field from surface layer (0-30 cm), to study the bioremediation of soil contaminated with some heavy metals (Co,Cu,Pb) using Canna generalis plant, to evaluate efficiency of this plant in bioremediation process of contaminated soil , accumulation of Lead, Copper and Cobalt in soil accordance with international standards for soil pollution. Young Canna generalis plant seedlings (one week old) were planted at a rate of two plants in 25 kg plastic pots in winter on 14/11/2021 for a period of three months, they were then reduced to one plant. Factorial experiment was carried out according to a complete randomized design (CRD) using Canna generalis plant, five different levels of heavy metals (CO, Cu, Pb) and three replications, bringing number of experimental units to 45 experimental units .Tretments are To, T1, T2, T3, and T4, including adding elements CO, Cu, and Pb separately at levels 0.0, 10, 20, 40, 60 mg kg-1. Added macronutrient fertilizer (NPK) according to heavenly recommendation, plants were irrigated with tap water after 35% of prepared water was exhausted, soil samples were taken before and after end of experiment to estimate available and total concentrations of heavy metals. Soil environmental pollution standards werecalculated, which included contamination factor (CF), pollution load index (PLI) and geological accumulation index (Igeo). Results showed, Increasing availabile concentration of Lead, Copper and Cobalt in soil at end of experiment, increase was direct with increase in levels of adding heavy metals, but it did not exceed the limits allowed by Food and Agriculture Organization of International and World Health. Highvery high pollution in soil planted with Canna generalis plant in relation to pollution factor (CF) of Co, Cu, and Pb, and a direct relationship was found between the added quantities of metals and degree of contamination factor, there was highest degree of soil pollution in relation to pollution load index (PLI), which shows occurrence of corruption and deterioration of soil quality. Moderate pollution in relation to evidence of geological accumulation (Igeo) when adding Lead, and moderate - severe pollution in relation to evidence when adding Copper and Cobalt, in a direct relationship with added levels of heavy metals in soil.