Effects of Sewage Sludge and Humic Acid Applications on Yield, Nutrients and Heavy Metal Contents of Maize and Some Soil Properties

WOS: 000304320400004In this study, it was aimed to investigate the effects of different sewage sludge (0, 10, 20 and 30 %) and humic acid applications (0, 1000, 1500 and 2000 ppm) on growth, nutrient and heavy metal contents of maize (Zea mays L.) grown on a calcareous soil, and also some properties, nutrients and heavy metal contents of the soil remained after harvest. The increasing concentrations of sewage sludge applications significantly decreased the pH and lime contents in soil after harvest, while salt contents, organic matter, P, Ca, Mg, Fe, Mn, Zn, Cu, Cd, Ni, Pb and Co contents of soil after harvesting were increased. Sewage sludge doses caused significant increases in shoot and root dry or wet weights and plant height of corn. With increased sewage sludge applications, significant increases in P, K and Zn contents of root and P, K, Ca, Mg, Fe, Mn, Zn, Cu, Cd, Ni, Pb and Co contents of shoot were recorded, but Fe, Mn, Cd, Ni, Pb and Co contents were significantly decreased. The increasing concentrations of humic acid applications increased organic matter, P, Ca and Mg contents of soil, but did not significantly affect the other soil properties. Plant height, dry and wet weights of root and shoot were significantly increased up to 1000 ppm of humic acid application, but higher levels had no beneficial effects. Micro nutrients of root of maize were numerically decreased by applications of humic acid. As a result, application 20% of sewage sludge and 1000 ppm of humic acid for maize is the most appropriate levels

Some Physical and Chemical Characteristics of Promising Walnuts (Juglans regia L.) Genotypes Selected From Tavas (Denizli)

Denizli ilinin Tavas yöresinde 2006-2008 yılları arasında yürütülen bu çalışmada, yörenin tohumdan yetişmiş doğal ceviz popülasyonları incelenmiştir. Doğal popülasyondan başlangıçta 100 ağaç işaretlenmiş, daha sonra meyve özellikleri dikkate alınarak 9 genotip seçilmiştir. Seçilen 9 ceviz genotipinde meyve ağırlığı 7.30-12.72 g, iç ağırlığı 3.44-6.30 g, iç oranı %42.22-56.60, kabuk kalınlığı 1.26-2.06 mm, toplam yağ oranı %62.02-71.56 ve protein oranı %11.31-17.69 arasında kaydedilmiştir. Genotiplerde 100 g iç meyvede makro ve mikro element içerikleri de analiz edilmiştir. Genotiplerin meyvelerinde ortalama % 2.33 N, 254.0 mg P, 362.9 mg K, 100.8 mg Mg, 126.4 mg Ca, 160.9 mg S, 1.97 mg Na, 2.46 mg Fe, 2.50 mg Mn, 2.21 mg Zn ve 1.11 mg Cu içerdikleri belirlenmiştir.In this study conducted in Tavas district of Denizli province during 2006 and 2008 years, the native walnut populations of the district was investigated. In the native populations, a hundred of seedling trees of walnut were marked, nine genotypes were selected for fruit characteristics. Selections had a range of 7.30-12.72 g for nut weight, 3.44-6.30 g for kernel weight, 42.22-56.60% for kernel percentage, 1.26-2.06 mm for shell thickness, 62.0271.56% for oil content and 11.31-17.69% for protein content. Their kernels (in 100g dried kernel) average contained macro and micro elements levels; % 2.33 N, 254.0 mg P, 362.9 mg K, 100.8 mg Mg, 126.4 mg Ca, 160.9 mg S, 1.97 mg Na, 2.46 mg Fe, 2.50 mg Mn, 2.21 mg Zn and 1.11 mg Cu

Nutrients status of grass and pasture soils in Kırıkhan-Reyhanlı region of Hatay province and relationships with some soil properties

Çalışmada Hatay ili Kırıkhan Reyhanlı bölgesi çayır-mera topraklarının makro ve mikro besin elementi durumları ve bunların kimi toprak özellikleri ile ilişkilerinin saptanarak, verimlilik durumlarının belirlenmesi amaçlanmıştır. Bu amaç için çayır mera topraklarını temsil edecek şekilde iki farklı derinlikten (0-20 ve 20-40 cm) ve 40 ayrı noktadan olmak üzere toplamda 80 toprak örneği alınmıştır. Alınan topraklarda pH, tuz, bünye, kireç, organik madde, KDK ve Toplam N, yarayışlı P, K, Ca, Cu, Fe, Mn ve Zn analizleri yapılmıştır. Araştırma sonuçlarına gore; toprakların % azot içerikleri 0.01-1.34 ile alınabilir fosfor 0.35-8.41 ppm; değişebilir potasyum 35.00-1125.00 ppm; kalsiyum 292.50-1197.50 ppm arasında belirlenirken, alınabilir bakır 0.26-7.48 ppm; demir 4.00-61.00 ppm; mangan 5.00-217.00 ppm; çinko 0.25-13.52 ppm ve belirlenmiştir. Özetle, toprakların büyük bir kısmında fosfor ve alınabilir çinko daha az bir kısmında alınabilir potasyum ve kalsiyum yönünden noksanlık belirlenirken, alınabilir bakır, demir ve mangan içerikleri bakımından ise herhangi bir noksanlığa rastlanmamıştır. Toprakların toplam azot ile tuz içerikleri, alınabilir fosfor ile pH ve kil içerikleri, değişebilir potasyum ile kum içerikleri, alınabilir bakır ve demir ile pH ve kum içerikleri, alınabilir mangan ile pH değerleri ve kalsiyum ile kum içerikleri arasında negatif önemli ilişkiler bulunmuştur. Toprakların toplam azot, değişebilir potasyum ve alınabilir demir ile tuz, silt, organik madde ve KDK değerleri, alınabilir fosfor ile tuz, silt ve organik madde içerikleri, alınabilir bakır ve kalsiyum ile tuz, kil, silt, kireç, organik madde ve KDK değerleri ve alınabilir mangan ile organik madde içerikleri arasında ise pozitif önemli ilişkiler belirlenmiştir.The study was conducted to determine the content of micro and macro nutritional elements and their fertility status by identifying their relevance to some characteristics of soil. For this purpose, from 40 different points and 2 different depths (0-20 and 20-40 cm) referring to total 80 soil samples were taken in a way to represent grass and pasture soils. Analyzes of pH, total salt, textures, lime, organic matter, CEC and Total N, available P, K, Ca, Cu, Fe, Mn and Zn were done in the soils samples. As a result of the study, it was determined that the percent nitrogen content of the soils was 0.0-1.34 ppm and the available phosphorus was 0.35-8.41 ppm; changeable potassium was 35.00-1125.00 ppm; while calcium was determined to be between 292.50-1197.50 ppm, available copper was 0.26-7.48 ppm, iron was 4.00-61.00 ppm, mangan was 5.00-217.00 ppm, zinc was0.25-13.52 ppm. In summing up, while phosphorus and available zinc were determined to be present in the majority of the soil samples, the minor parts of the soils were determined lacking available potassium and calcium. Copper, iron or mangan was available in all soil samples. It was found that there was a negative relations of total nitrogen content with salt contents, available phosphorus with pH and clay contents, changeable potassium with sand contents, available copper and iron with pH and sand contents, available mangan with pH values and calcium with sand contents. It was determined that there are positive relations of total nitrogen, changeable potassium and available iron with salt, silt, organic matter and KDK values, available phosphosrus with salt, silt and organic matter content, available copper and calcium with salt, clay, silt, lime, organic matter and KDK values and available mangan with organic matter

Phosphorus and humic acid application alleviate salinity stress of pepper seedling

WOS: 000281680400011Humic acid is a commercial product that contains many elements which improve the soil fertility and increase the availability of nutrient elements. It consequently affects plant growth and yield and ameliorates the deleterious effects of salt stress. The objective of the study was to determine the effect of humic acids and phosphorus on growth and nutrient content of pepper seedlings (cv. Demre) grown under moderate salt stress in growth chamber conditions. Applications of different levels of phosphorus [0 (P(0)), 50 (P(1)), 100 (P(2)) and 150 (P(3)) mg kg(-1)] and humic acid [0 (HA(0)), 750 (HA(1)) and 1500 (HA(2)) mg kg(-1)] to growing media containing moderate salt dose (8 mM NaCl treatment) were studied. The study was replicated four times with 20 plants in each replicate. Humic acid (HA) and phosphorus applications increased the growth and growth parameter of plants. In company, effects of HA and P application was more effective on growth and growth parameter than each separate effect. The optimum total yield was obtained from 69 mg kg(-1) P application with HA2 doses according to regression analysis. Humic acid application significantly increased N, P, K, Ca, Mg, S, Mn and Cu contents of shoot of pepper seedling. Also, N, P, K, Ca, S, Fe, Mn, Zn and Cu contents of root were increased with humic acid application. Na contents of both shoot and root of pepper decreased with increased humic acid doses. It can be concluded that high humic acid doses has positive effects on salt tolerance based on the plant growth parameters and nutrient contents. The present study suggests that HA treatments can ameliorate the deleterious effects of salt stress on pepper plants and HA could offer an economical and simple application to reduce problems of pepper production in moderately saline soil

Response of Mycorrhiza-Inoculated Pepper and Amino Acids to Salt Treatment at Different Ratios

WOS: 000456290800010Mycorrhiza has attracted interest as one of the microorganisms that increase a crop's salt stress tolerance. This study was conducted to determine the impacts of mycorrhiza inoculation and applying salt at different ratios on the yield of peppers and amino acid concentrations. The study was conducted in greenhouse conditions on loamy soils with four salt treatments, two mycorrhiza inoculations and a control in a complete randomized block design. The present study indicated that salt treatment alone was significantly correlated with crop stem and root amino acid concentrations, RWC% and leaf sizes, whereas applying mycorrhiza showed a positive relationship to stem height, stem and root wet weight, and root amino acids but led to a decloine in root serine and glutamine, and stem amino acid and glutamine. In conclusion, inoculating with mycorrhiza was observed to make a positive contribution to salt stress tolerance at different levels in almost all the parameters examined