effects of phosphorous, iron and zinc fertilizers on quantity and quality of turnip (brassica rapa) forage

نویسندگان

حسین مقدم

پردیس کشاورزی و منابع طبیعی کرج، دانشکده علوم زراعی و دامی، گروه زراعت و اصلاح نباتات، تخصص:دکتری اکولوژی گیاهان زراعی محمد دشتکی

کارشناس ارشد مراد محمدی

دانشجوی ارشد

چکیده

to evaluate the effects of phosphorous, iron and zinc fertilizers on quantity and quality of turnip, a field experiment was conducted in 2009. the experiment treatments arranged as split plot factorial based on a completley randomized design with 4 replications in the research farm of the university of tehran (karaj-iran). the main factor including three levels of phosphorous (super phosphate triple, 0, 150 and 300 kg/ha) and 2 levels of iron fertilizer (chelate in eddha form, 0 and 4 kg/ha) along with three levels of zinc fertilizer (zink sulfate, 0, 20 and 40 kg/ha) were allocated to subplots. control treatments include plots with no fertilizers. the results indicated that phosphorous had significant effects on dry yield and some quality traits such as crude protein percentage, water soluble carbohydrates, and ash. also 300 kg/ha phosphorous fertilizer increased dry yield by 42.7% compared to control. the iron fertilizer had positively significant effect on dmd, cp (p?0.01), adf, and ash (p?0.05). investigated factors had no significant effect on plant height. applications of these fertilizeres are necessary for achieving high dry yield along with high quality forage.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

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...

Salinity Effects on Mineral Nutrients and Performance of Turnip (Brassica Rapa L.) at Different Growth Stages

In order to study the effects of different salinity levels on turnip (Brassica rapa L.), an investigation was conducted at Yasouj University, Iran, in 2010. The effects of four salinity levels including 1.92, 9.87, 19.6 and 21.94 ds m-1 (20:1 ratio of NaCl: CaCl2 in Hoagland solution) on germination, vegetative and maturity stages of turnip (Baherghan landrace) were investigated. The results re...

متن کامل

the 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 اول

on the relationship between using discourse markers and the quality of expository and argumentative academic writing of iranian english majors

the aim of the present study was to investigate the frequency and the type of discourse markers used in the argumentative and expository writings of iranian efl learners and the differences between these text features in the two essay genres. the study also aimed at examining the influence of the use of discourse markers on the participants’ writing quality. to this end the discourse markers us...

15 صفحه اول

the effects of previewing and providing background knowledge on iranian university efl learners’ comprehension of literary and academic texts

abstract poor reading comprehension can result in failure in using references, benefiting from professional gatherings and resources, keeping up with the growing body of knowledge in the virtual world of the internet, and failing to achieve in efl programs. the purpose of the present quasi-experimental study was to explore the effects of background knowledge and previewing narrative and expos...

15 صفحه اول

منابع من

با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید


عنوان ژورنال:
علوم گیاهان زراعی ایران

جلد ۴۳، شماره ۴، صفحات ۶۸۱-۶۸۹

کلمات کلیدی
[ ' t o e v a l u a t e t h e e f f e c t s o f p h o s p h o r o u s ' , ' i r o n a n d z i n c f e r t i l i z e r s o n q u a n t i t y a n d q u a l i t y o f t u r n i p ' , ' a f i e l d e x p e r i m e n t w a s c o n d u c t e d i n 2 0 0 9 . t h e e x p e r i m e n t t r e a t m e n t s a r r a n g e d a s s p l i t p l o t f a c t o r i a l b a s e d o n a c o m p l e t l e y r a n d o m i z e d d e s i g n w i t h 4 r e p l i c a t i o n s i n t h e r e s e a r c h f a r m o f t h e u n i v e r s i t y o f t e h r a n ( k a r a j ' , ' i r a n ) . t h e m a i n f a c t o r i n c l u d i n g t h r e e l e v e l s o f p h o s p h o r o u s ( s u p e r p h o s p h a t e t r i p l e ' , 0 , ' 1 5 0 a n d 3 0 0 k g / h a ) a n d 2 l e v e l s o f i r o n f e r t i l i z e r ( c h e l a t e i n e d d h a f o r m ' , ' 0 a n d 4 k g / h a ) a l o n g w i t h t h r e e l e v e l s o f z i n c f e r t i l i z e r ( z i n k s u l f a t e ' , 0 , ' 2 0 a n d 4 0 k g / h a ) w e r e a l l o c a t e d t o s u b p l o t s . c o n t r o l t r e a t m e n t s i n c l u d e p l o t s w i t h n o f e r t i l i z e r s . t h e r e s u l t s i n d i c a t e d t h a t p h o s p h o r o u s h a d s i g n i f i c a n t e f f e c t s o n d r y y i e l d a n d s o m e q u a l i t y t r a i t s s u c h a s c r u d e p r o t e i n p e r c e n t a g e ' , ' w a t e r s o l u b l e c a r b o h y d r a t e s ' , ' a n d a s h . a l s o 3 0 0 k g / h a p h o s p h o r o u s f e r t i l i z e r i n c r e a s e d d r y y i e l d b y 4 2 . 7 % c o m p a r e d t o c o n t r o l . t h e i r o n f e r t i l i z e r h a d p o s i t i v e l y s i g n i f i c a n t e f f e c t o n d m d ' , ' c p ( p ? 0 . 0 1 ) ' , ' a d f ' , ' a n d a s h ( p ? 0 . 0 5 ) . i n v e s t i g a t e d f a c t o r s h a d n o s i g n i f i c a n t e f f e c t o n p l a n t h e i g h t . a p p l i c a t i o n s o f t h e s e f e r t i l i z e r e s a r e n e c e s s a r y f o r a c h i e v i n g h i g h d r y y i e l d a l o n g w i t h h i g h q u a l i t y f o r a g e . ' ]

میزبانی شده توسط پلتفرم ابری doprax.com

copyright © 2015-2023