Murat Ali Turan

Effect of Foliar-Applied Humic Acid to Dry Weight and Mineral Nutrient Uptake of Maize under Calcareous Soil Conditions

Greenhouse research was conducted to determine the effects of foliar application of humic acid on dry matter and some nutrient element uptake of maize grown under calcareous soil conditions. Agricultural lime was used to obtain five calcium carbonate (CaCO3) doses (0, 5, 10 20, and 40%) and three foliar application doses of humic acid (0, 0.1, and 0.2%) sprayed at 20 and 35 days after emergence. Although the dry weight and mineral element uptake of maize were affected negatively, especially at 20 and 40% of lime levels, foliar application of humic acid had a statistically significant positive effect on dry weight and copper (Cu), zinc (Zn), and manganese (Mn) uptakes (P < 0.01) of maize plants. The greatest dry weight and Cu and sodium (Na) uptakes were obtained from the 0.01% humic acid treatment. The interaction of lime and humic acid was also statistically significant on dry weight, nitrogen (N), phosphorus (P), calcium (Ca), magnesium (Mg), Cu, Zn, and Mn uptake (P < 0.01).

Major and Minor Element Concentrations in Fermented Shalgam Beverage

The concentrations of sodium, potassium, calcium, magnesium, and phosphorus (major elements) and iron, manganese, tin, copper, nickel, zinc, lead, and cadmium (minor elements) were determined in fermented shalgam beverage samples of different brands randomly collected from domestic markets in Bursa province, Turkey, using inductively coupled plasma optical-emission spectrometry technique. The elements with the highest frequency were Na, K, Ca, Mg, and P and the range of these elements were 4.52–6.15 g L−1, 0.27–0.72 g L−1, 34.02–148.30 mg L−1, 30.61–75.38 mg L−1 and 8.72–82.96 mg L−1, respectively. The concentrations of heavy metals, such as Cd, Ni, Sn, and Pb, found in shalgam beverage were below 1 mg L−1 in almost all of the samples.

Evaluation of Analytical Methods for Boron Determination in Maize Shoots

ABSTRACT For the comparison of the digestion and spectroscopic determination methods used to measure boron (B) concentrations in maize shoots, increasing doses of boron (0, 2.5, 5, and 10 mg kg−1 B) were applied to soil and maize plants (Zea mays L.) cultivar “Euralis Es Armandi” (FAO 640). The plants were grown under greenhouse conditions. Dried and ground maize shoots were digested according to two digestion procedures of microwave and dry ashing. Boron concentrations were determined using spectrophotometer and inductively coupled plasma-optical emission spectrometry (ICP-OES). The concentrations of boron influenced statistically (p < 0.01) due to the B applications and analysis methods. Spectrophotometric measurement of B amounts of the samples prepared with microwave digestion method was found irrelevant with other indicated methods. However, the ICP-OES measurements were found compatible with the dry ashing also with microwave digestion and suggested as a suitable method to determine boron contents of the maize shoots.

Effect of boron application on calcium and boron concentrations in cell wall of durum (Triticum durum) and bread (Triticum aestivum) wheat

ABSTRACT A greenhouse experiment was conducted with three doses of boron (0, 1, and 10 mg B kg−1 in the form of boric acid (H3BO3). Durum wheat (Triticum durum L. cv: Çakmak-79) and bread wheat (Triticum aestivum L. cv: Gerek-79) cultivars were used as plant material. B toxicity symptoms strongly appeared in durum wheat compared to bread wheat. Applications of B at 1.0 mg B kg−1 stimulated and increased the dry weights of both the cultivars, while high level B application (i.e., 10 mg B kg−1) depressed and decreased the dry weights significantly. B concentration and uptake in the leaf tip were increased with an increase in B application, whereas calcium (Ca) concentration and uptake were decreased in both the cultivars. It was observed that a substantial amount of B was accumulated in the plant cell wall. As similar to leaf tips, B concentrations in the cell wall also increased with B application, whereas Ca concentration was decreased.

Bacillus subtilis Ch-13, Azot ve Fosfor Uygulamalarının Buğdayda (Triticum aestivum L.) Verim, Protein ve Gluten Miktarına Etkisinin Belirlenmesi

Bu calismada Bacillus subtilis Ch-13’un (BS0 Bacillus subtilis Ch-13 uygulanmayan ve BS1Bacillus subtilis Ch-13 uygulanan) artan dozlarda azot ve fosfor uygulamalariyla CF0 (0 kg N da-1, 0 kg P da-1), CF25 (5 kg N da-1, 0.7 kg P da-1), CF50 (10 kg N da-1, 1.4 kg P da-1), CF75 (15 kg N da-1, 2.1 kg P da-1), CF100 (20 kg N da-1, 2.8 kg P da-1)dogal iklim kosullarinda kuruda yetistirilen bugday bitkisinde (Triticum aestivum L. cv. Pehlivan) verim, protein ve yas gluten icerigine olan etkisi arastirilmistir. Deneme sonunda artan dozlarda azotlu ve fosforlu gubreleme ve mikrobiyolojik gubre uygulamasinin bugday bitkisinde verim ile tanenin yas gluten ve protein icerigini istatistiksel olarak onemli duzeyde arttirdigi belirlenmistir (P