Effects of various rates and concentrations of N-P-K on growth ‘Rio Grande ’tomato seedling
سال انتشار: 1393
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 499
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شناسه ملی سند علمی:
JR_IJABBR-2-3_004
تاریخ نمایه سازی: 26 اسفند 1394
چکیده مقاله:
Tomato (L.ycopersicon esculentum Mill.) cv. Rio Grande seedlings were nutritionally conditioned with solutions complete fertilizer N(60% NO3+40% NH4)-P-K (20-20-20) , N(30%NO3+70% NH4)-P-K (15- 5-30) , the first two week N(60% NO3+40% NH4)-P-K (20-20-20) and later two week N(30%NO3+70%NH4)-P-K (15-5-30) and vice versa were applied in completely randomized experiment with three replications to determine the effect of nutritional regimes on tomato transplant growth. As nitrate rate increased from 30% to 60%, fresh shoot weight, plant height, stem diameter, leaf number, leaf area, shootand root dry weights, and total chlorophyll increased. in the 750 mg/lit of N( 60% NO3+40%NH4 )-P-K (20-20-20) were decreased and it is with to increasing in stem diameter and total plant growth , application of N(60%NO3 + 40%NH 4 )-P-K(20-20-20) in the first two weeks of seedling growth and N(30%NO3+70%NH4)-P-K (15-5-30) in the last two weeks in the concentration of 200 mg/liter seedling height decreased
کلیدواژه ها:
نویسندگان
Ozra Hassanshahian
Department of Horticulture, M.S of Agriculture, Shiraz University, Iran
Jamal Javanmardi
Department of Horticulture, Faculty of Agriculture, Shiraz University, Iran
Mohammad javad Behroozbeh
Department of Biotechnology, M.S.C student of Agricultural, Gonbad kavous University, Iran