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تاثير مستويات وطرق اضافة سماد اليوريا في امتصاص النتروجين والبوتاسيوم ونمو وحاصل الطماطة Lycopersicon esculentum Mill. == Effect of Levels and Application Methods of Urea on N and K uptake , Growth and Yield of Tomato (Lycopersicon esculentum Mill.)
Author name:
محمد كاظم حسن الخفاجي
Supervisor name:
محمد عبد الله عبد الكريم
General topic:
Agricultural sciences
Specific topic:
Soil and Water
Degree:
Master
University:
University Of Basrah - Faculty Of Agriculture
Language:
Arabic
University location:
Basrah
First pages:
31T1857 - p.pdf
Abstract:
A field experiment was conducted in tomato growing station , AL - Zubair region , Basrah Province during the winter season of 2013 - 2014 to evaluate the effect of levels and methods of nitrogen application on N and K uptake , growth and yield of tomato ( Hybrid wogdan ) grown in plastic house . Urea was applied at levels of 0, 100, 200, and 300 kg N ha - 1 at five doses . Methods of application were : 100% N fertilization to soil , ( Foliar +Soil) fertilization ( 25% of each level was applied as foliar and the remain was applied to soil ), and 100% N as fertigation . Field was plowing and received manure , then with height of 15cm of tomato seedlings were transplanted on 14/10/2013 . Field was under drip irrigation system . Phosphorus and potassium were applied at levels of 43 kg P2O5 ha - 1 and 166 kg K2O ha - 1 to each plot . The normal agricultural treatments of tomato were practiced as usually followed in Al - Zubair region . NH4+ - N in soil ; NO3 - - N in soil ; available K in soil ; N , K , Ca , Mg and Na concentration in leaves were obtained at six stages of tomato growth season . Also N , K , vitamin C , fruit size and TSS in fruits were measured . The dry weight of shoot and total fruits yields were recorded . Fertilizer - use efficiency was calculated . Based on K concentration in lower and upper leaves of K in Plant was studied . The results showed that : 1 - Increasing N level applied increased concentration of NH4+ - N , NO3 - - N in soil , N in leaves and fruits , however , K in leaves increased up to 200 kg N ha - 1 then decreased as N level concentrated to 300 kg ha - 1 . Ca and Na in leaves decreased with increasing N level , while Mg in leaves show no significant affect with N levels . Higher shoot dry weight and fruit yield were obtained with application of 200 kg N ha - 1 .2 - Higher N and K concentrations in leaves , fruits , fruit size , dry weight and fruit yield were obtained with fertigation method compared with (foliar+ soil) and soil methods : with 89.54 ton ha - 1 fruit yield . On the other hand lower values of NH4+ - N and NO3 - - N in soil ; Ca , Mg and Na in leaves ; Vitamin C and TSS were recorded at fertigation method . However , available K in soil not affected with application method .3 - Fertigation method gave the highest value of fertilizer - use efficiency followed by ( foliar+ soil) method then Soil one .4 - Results also revealed that N levels was not affected the translocation of K upward the plant shoot because of high growth and higher uptake of K in Plant , while the effect of application method follows the order : Soil > (Foliar+ Soil) > Fertigati
