1عضو هیئت علمی مرکز تحقیقات کشاورزی و منابع طبیعی مازندران
2عضو هیئت علمی مرکز تحقیقات کشاورزی و منابع طبیعی فارس
3عضو هیئت علمی مؤسسه تحقیقات خاک و آب
چکیده
این تحقیق برای ارزیابی اثربخشی سولفات آهن و کیلیت آهن، به عنوان دو منبع متفاوت کود آهن، در باغ پرتقالی واقع در ایستگاه تحقیقات کشاورزی جهرم به مدت چهار سال انجام شد. در صورت عدم مصرف کیلیت آهن، عملکرد میوه در باغهای مرکبات منطقه به شدت کاهش مییابد. به همین علت مصرف کیلیتهای آهن در باغهای منطقه مرسوم میباشد. هدف از اجرای این تحقیق، مقایسة طولانی مدت اثربخشی مصرف سولفات آهن به روشهای پخش سطحی و چالکود، با مصرف کیلیت آهن به روش کود آبیاری میباشد. با توجه به اهداف کاربردی موردنظر از اجرای این تحقیق، میزان عملکرد میوه و ویژگیهای کیفی آن، ملاک ارزیابی در نظر گرفته شد. نتایج این بررسی نشان داد که مصرف 100 گرم کیلیت آهن برای هر درخت، عملکردی برابر با 22240 کیلوگرم پرتقال در هکتار به همراه داشته است. مصرف 500 گرم سولفات آهن به روش چالکود، عملکرد میوه را 18% کاهش و به 18291 تنزل داد. میزان عملکرد میوه در تیمار مصرف سولفات آهن به روش پخش سطحی در حد تیمار چالکود بود که متفاوت از نتایج تحقیقات مشابه میباشد. این حالت احتمالاً ناشی از مصرف مداوم کودهای آلی و سطحی بودن ریشهها در حالت آبیاری قطرهای میباشد. نوع کود آهن مصرفی، بر هیچ یک از ویژگیهای
Effects of Different Sources of Iron Fertilizers on Fruit Yield and Quantity of Orange Trees
نویسندگان [English]
M. Shahabian1؛ H. Rastegar2؛ S.M. Samar3
1-Member of the scientific board of Agricultural and Natural Resources Research Center of Mazandaran
2Member of the scientific board of Agricultural and Natural Resources Research Center of Fars
3Member of the scientific board of Soil and Water Research Institute, respectively.
چکیده [English]
This four year study was conducted in an orange orchard in Jahrom Agricultural Research Station to compare the effectiveness of iron sulfate whith iron chelate, as two different sources of iron fertilizer. Fruit yield decreases drastically in citrus orchards of the region, when iron chelate is not applied. So, application of iron chelate is a regular practice in Jahrom orange orchards. The objective of this investigation was a long-term comparison of broadcasted and localized application of iron sulfate, along with fertigation of an iron chelate. As we follow a practical viewpoint, only fruit yield and quality were determined for each treatment. Results showed that application of 100 grams of iron chelate, yielded 22240 kilograms of fruit per hectare. Localized application of 500 grams of iron sulfate, diminished yield 18 percent, to 18291 kilograms per hectare. There was no significant difference between fruit yield in broadcasted and localized application of iron sulfate treatments, results that differed from the findings of similar researches. This may be due to continuous application of organic matter to the soil and the development of tree roots near the soil surface as a consequence of drip irrigation. The iron fertilizer sources did not show any significant effect on fruit quality parameters including crust thickness, acidity, vitamin C and total dissolved salts.
کلیدواژهها [English]
Orange, Iron chelate, Localized application, Fertigation
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