بررسی تاثیر تغذیه کلسیم و سیلیسیم بر روی شاخص‌های تغذیه‌ای شب‌پره مینوز گوجه‌فرنگی، Tuta absoluta Meyrick در شرایط گلخانه‌ای

Tomato, Lycopersicon esculentum Mill, is one of the most important crops grown in the world, which is used as a fruit, vegetable and a medicinal plant. Tomato miner (Tuta absoluta Meyrick) is one of the most harmful pests for crops, especially for Solanaceae such as tomatoes, potatoes, eggplants. This pest was considered as a quarantine pest in the past years but unfortunately it was collected and identified in Urumia for the first time in 2010 and has developed rapidly in Iran, so that there are now in most parts of the country. The larvae of this pest are fed and damaged from all parts of the tomato plant, including leaves, stems, flowers and fruits. In some parts of the country, the damage has been reported between 50% and 100%. The experiment was conducted at the research greenhouse of Islamic Azad University, Mahabad branch in order to study the nutritional indices of this pest on tomatoes (Falat cultivar), which was affected by solubility of calcium and calcium nutrients. The experiment was conducted in a completely randomized design with four replications in the form of the foliar application (2000 ppm), silicon (3000 ppm), and mixture of calcium and silicon with control treatment. The nutritional indices was investigated including the digestibility approximate (AD), the efficiency of conversion of ingested food (ECI), efficiency of conversion of digested food (ECD), relative consumption rate (RCR) and relative growth rate (RGR). Based on the results, foliar application had a significant effect on all studied traits. The means comparison showed that the highest digestibility approximate (AD) was observed at the control treatment and the lowest was observed in mixture treatment (calcium×silicon) with means of 0.958 and 0.563, respectively. The lowest and the highest efficiency of conversion of ingested food were observed on mixture treatment (calcium×silicon) and control with means of 0.073 and 0.975, respectively. The lowest and highest levels of efficiency of conversion of digested food were observed on mixture treatment (calcium×silicon) and control with means of 49.37 and 71.60, respectively. The lowest relative growth rate was observed on the mixture treatment (calcium×silicon) with mean of 0.05 and the highest amount was observed at the control treatment with mean of 0.072. The lowest and highest relative consumption rate were observed on mixture of calcium and silicon and control treatments with means of 0.049 and 0.102, respectively