تأثير نسب متباينة من التغذية بالبوتاسيوم والكالسيوم والمغنيزيوم على البندورة في الزراعة المائية

الموضوعات

زراعة

روابط وملفات

التعريف والنوع

رقم الوثيقة

03e550a5-3ac1-4613-9732-6b74d381b62f

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل ماجيستير

نوع الملف

pdf text

أسماء الملفات

1959487_1.pdf

بيانات النشر

ترجمة العنوان

The effect of different rates of potassium, calcium and magnesium nutrition on tomato in hydroponic culture

ألقاب المؤلفين

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اللغة

Arabic

المصدر والدورية

اسم المصدر

تأثير نسب متباينة من التغذية بالبوتاسيوم والكالسيوم والمغنيزيوم على البندورة في الزراعة المائية

المحتوى والصفحات

عدد الصفحات

0

ترجمة الملخص

The search was conducted in a greenhouse(4*6m)growing tomato plant in sand nutrient culture with variable ratios of Ca:Mg and Kin the nutrient solution. The aim was to evaluate productivity parameters, marketable fruit production, fruit quality characteristics, and nutrients uptake and distribution between leaves and fruits. The experiment consisted of four Ca:Mg ratios (4:6, 5:5, 7.5:2.5, and 10:0.5 mM/L), along with three K concentrations 0.5, 3, and 4.5 mM/L in the nutrient solution. There were 12 treatments each consist of three replicates.In spite of the increase in weight of fruits with increasing Ca:Mg ratios and potassium concentrations, the increase in fruit number on the plant with increasing Ca:Mg ratio to (5:5)and 3 mMK has the main effect on plant productivity and marketable fruits. In this treatment plants produced 49 fruit/plant resulted from 5 fruit punches. The highest fruit production reached 4.72 kg/plant (fruit from 5 punches) in treatment Ca:Mg (7.5:2.5) and 3 mM/L-1K. Most of the physiological disorder symptoms spread on fruits was blotchy shoulders, which was associated directly with low potassium concentration in the growth medium, which negatively influenced the marketable fruit production.Physiological disorder symptoms on fruits along withfruit diameter(< 47 mm) decreased marketable fruit production to 8% of total in treatment Ca:Mg (5:5) and 0.5 mM/L-1, whereas marketable fruit production were 95% in the same Ca:Mg ratio and 4.5 mM/L-1K. pH dropped in fruits with increasing Ca:Mg ratios at all K concentrations in the nutrient solution. The reverse was true with titra table total acidity. TSS increased as Ca increased in the nutrient solution if K supply was adequate(4.5 mM), and reached 6.52%in Ca:Mg ratio (10:0.5). Vitamin C took the same trend as TSS and values were 30-45 which are higher than normally reported (15-25 mg/100 g). Nitrate concentrations, while increasing with increasing Ca and K concentrations in the nutrient solutions, were within normal range (less than 400 mg/L-1).Nitrogen concentrations in leaves increased with increasing calcium concentrations in the presence of high concentrations of potassium in the growth medium.A gradual decrease in phosphorus concentrations in the leaves was observed with increasing calcium concentrations in the growth medium. Potassium had a positive effect on phosphorus concentrations in the fruit. There was an antagonistic relationship between Ca, Mg and K nutrients, as the increase in the concentration of an element decreases the concentration of other element cation.

كلمات الباحثين

Blossom end rot, Blotchy ripening, Blotchy shoulders, Fruit quality, hydroponic culture, Productivity, Protected agriculture, Tomato, الإنتاجية, البندورة, الزراعة المائية, الزراعة المحمية, النوعية, مرض النضج المتبقع, مرض تبقع الأكتاف, مرض عفن الطرفي رهزلا

إشراف وإعداد

الإشراف

غياث علوش

الإعداد

ساره سركو

الاقتباسات الببليوغرافية