effects of acidified irrigation water and iron fertilizers on shoot dry yield, iron uptake and photochemical efficiency of corn
نویسندگان
چکیده
fereidon nourgholipour1*, mohammad passandideh1 and emam gholi nourgholipour 2 [1] - soil and water research institute, tehran, iran 2- university of tehran, college of abureihan, tehran, iran received: 21 december 2009 accepted: 25 february 201 1 * corresponding author: e-mail: [email protected] abstract expansion and economical importance of yield reduction due to iron deficiency chlorosis in the world has attracted many researchers attention. different materials, such as iron sulfate, acidified remediation, wastes, by-products of industries, iron chelate and organic compounds, have been tested to correct iron chlorosis. this experiment studied effect of applying an iron fertilizer for corn (sc 704) consisting sulfur and thiobacillus bacteria. experiment was carried out in greenhouse in factorial with complete of randomized design in four replications. the first factor was two kinds of irrigation water, w1= irrigation with ordinary water of soil and water research station of karaj and w2= irrigation with acidified water of station with ph of 5-5.2 (acidified with sulfuric acid). the second factor was seven iron fertilizer treatments, t1=control (without iron fertilizer) t2= iron sequestrine 138 (10 mg. kg-1), t3= iron sulfate (110 mg.kg-1), t4= iron oxide powder of iron ore (220 mg.kg-1), t5= t4 + sulfur (250 mg.kg-1 powdered sulfur) + thiobacillus inoculant (104 cell.gr soil -1), t6= t5 + organic matter, t7= t3 + organic matter. nitrogen, potassium, triple superphosphate, mn, zn, cu sulfates and acid boric was used 200, 85, 90, 10, 5, 10 and 5 mg. kg-1, respectively. in the end of experiment, dry shoot and root weight, iron uptake, chlorophyll index (spad 502) and fv/fm were measured. based on results, acidified irrigation water had significant effect on shoot dry weight and p and fe uptake at five percent probability level, but had no significant effect on chlorophyll index. effects of different fertilizer treatments on dry weight, p and fe uptake and chlorophyll index, against fv/fm, were significant on five percent level. t6 and t7 produced highest shoot dry weight and t2 produced the lowest. the highest amount of p and fe uptake was belonging to t7 and the lowest was belonging to t2. the highest amount of chlorophyll index was belonging to t6. between treatments there was no significant difference on fv/fm factor.
منابع مشابه
effect of seed priming and irrigation regimes on yield,yield components and quality of safflowers cultivars
این مطالعه در سال 1386-87 در آزمایشگاه و مزرعه پژوهشی دانشگاه صنعتی اصفهان به منظور تعیین مناسب ترین تیمار بذری و ارزیابی اثر پرایمینگ بر روی سه رقم گلرنگ تحت سه رژیم آبیاری انجام گرفت. برخی از مطالعات اثرات سودمند پرایمینگ بذر را بر روی گیاهان مختلف بررسی کرده اند اما در حال حاضر اطلاعات کمی در مورد خصوصیات مربوط به جوانه زنی، مراحل نموی، عملکرد و خصوصیات کمی و کیفی بذور تیمار شده ژنوتیپ های م...
environmental effects of gol-e-gohar iron ore mine on groundwater of the area
gol-e-gohar iron ore mine of sirjan in southern part of iran is a large open pit that operates below the groundwater table and during mining operation, dewatering is required to prevent operation processes from flooding. current operation is going on by digging wells in or out of the pit and pumping to prevent flooding. as a result of the former dewatering operation a vast deep cone of depressi...
petrology and geochemistry of khar-bash (western shahrood) and its relation ship to iron mineralization
منطقه مورد مطالعه در 23 کیلومتری جنوب غرب شهرستاشاهرود قرار دارد که در نقشه 100000/1 شاهرود قرار گرفته است.ناحیه مورد مطالعه در تقسیمات ساختاری ایران بخشی از زون البرز شرقی است . در طی سنوزوئیک این زون به شدت تحت تأثیر فازهای کوهزایی آلپی قرار گرفته و فعالیت های آتشفشانی انوسن در قسمت های غربی آن دیده می شود . از نظر ترکیب سنگ شناسی منطقه مورد مطالعه متنوع و بیشتر شامل سنگ های رسوبی مانند : آ...
15 صفحه اولEffects of Nitrogen Rate, Irrigation Rate, and Plant Population on Corn Yield and Water Use Efficiency
crucial for the survival of agriculture in northeastern Colorado. Improper N and irrigation management are major factors contribThe relationships of corn yield and nitrate leaching uting to water quality and shortage problems in the Great Plains. with irrigation, N fertilization, and plant population This study was conducted on the Irrigation Research Farm in Yuma, have been extensively investi...
متن کاملthe effects of planning on accuracy and complexity of iranian efl students’ written narrative task performance
this study compared the different effects of form-focused guided planning vs. meaning-focused guided planning on iranian pre-intermediate students’ task performance. the study lasted for three weeks and concentrated on eight english structures. forty five pre-intermediate iranian students were randomly assigned to three groups of guided planning focus-on-form group (gpfg), guided planning focus...
15 صفحه اولمنابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
نشریه تحقیق در علوم کشاورزیجلد ۷، شماره ۲، صفحات ۰-۰
کلمات کلیدی
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023