effects of nitrogen fertilizer and sowing density on forage yield of corn in an agroforestry system

نویسندگان

سعید قنبرزاده

محمدرضا چائی چی

سید محمدباقر حسینی

علیرضا طالعی

چکیده

this experiment was conducted to evaluate the effects of different sowing densities and nitrogen fertilizer rates on quantitative and qualitative corn forage yield in an agroforestry system with orange trees. the treatments consisted of 4 nitrogen fertilizer levels of 0, 100, 200, and 300kg n/ha (allocated to main plots) and 4 sowing densities of 80000, 110000, 140000 and 170000 of corn seeds (plants) per hectare (allocated to sub plots). the experimental plots being kept either weed free or weed infested were allocated to sub-sub plots. the treatments were arranged as split-split plots in a randomized complete block design with three replications. the forage dry matter yield followed an increasing trend as nitrogen fertilizer and sowing density increased. the highest forage dry matter of around 34000 kg/ha was achieved at 170000 plants/ha while receiving 300kg/ha of nitrogen. the largest orange fruit diameter was observed in 100kg n/ha and 80000 plants/ha which was not significantly different from 300 kg of n/ha treatment.

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 Different Amounts of Nitrogen Fertilizer on Grain Yield of Forage Corn Cultivars in Isfahan

To evaluate the effect of nitrogen fertilizer amounts on grain yield of forage corn in 2012, a pilot was implemented in Islamic Azad University Agricultural Research Station, Isfahan, as a split plot in a randomized complete block design. Main plots consisted of four levels: control (no fertilization ) , 50 , 100 and 150 kg per ha nitrogen from urea source and subplots , including several varie...

متن کامل

Effect of Different Amounts of Nitrogen Fertilizer on Grain Yield of Forage Corn Cultivars in Isfahan

To evaluate the effect of nitrogen fertilizer amounts on grain yield of forage corn in 2012, a pilot was implemented in Islamic Azad University Agricultural Research Station, Isfahan, as a split plot in a randomized complete block design. Main plots consisted of four levels: control (no fertilization ) , 50 , 100 and 150 kg per ha nitrogen from urea source and subplots , including several varie...

متن کامل

بررسی اثر کود نیتروژن و تراکم کاشت بر کیفیت علوفه و جمعیت علف های هرز ذرت (.Zea mays L) در نظام کشت جنگل زراعی

Agroforestry is one of the sustainable agricultural aspects in which the perennial woody plants grow in selective method with annual plants, domestic or both. This experiment was conducted to evaluate the effects of different sowing densities and nitrogen fertilizer rates on quantitative and qualitative characters of corn forage yield as well as weed population in an agroforestry system with or...

متن کامل

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...

effects of sowing date and plant density on ear yield of sweet corn in summer sowing

in order to study the effect of sowing date and plant density on ear of sweet corn an experiment was conducted in gorgan reaserch station since june 2001 during 3 years. in this experiment five sowing date (24th june, 9th july, 24th july, 18th agust and 23th agust) and four plant density (45000, 55000, 65000 and 75000 plant per hectar) were evaluated in form of factorial experiment (5×4) within...

متن کامل

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 ۴۱، شماره ۳، صفحات ۰-۰

کلمات کلیدی
[ ' t h i s e x p e r i m e n t w a s c o n d u c t e d t o e v a l u a t e t h e e f f e c t s o f d i f f e r e n t s o w i n g d e n s i t i e s a n d n i t r o g e n f e r t i l i z e r r a t e s o n q u a n t i t a t i v e a n d q u a l i t a t i v e c o r n f o r a g e y i e l d i n a n a g r o f o r e s t r y s y s t e m w i t h o r a n g e t r e e s . t h e t r e a t m e n t s c o n s i s t e d o f 4 n i t r o g e n f e r t i l i z e r l e v e l s o f 0 ' , 1 0 0 , 2 0 0 , ' a n d 3 0 0 k g n / h a ( a l l o c a t e d t o m a i n p l o t s ) a n d 4 s o w i n g d e n s i t i e s o f 8 0 0 0 0 ' , 1 1 0 0 0 0 , ' 1 4 0 0 0 0 a n d 1 7 0 0 0 0 o f c o r n s e e d s ( p l a n t s ) p e r h e c t a r e ( a l l o c a t e d t o s u b p l o t s ) . t h e e x p e r i m e n t a l p l o t s b e i n g k e p t e i t h e r w e e d f r e e o r w e e d i n f e s t e d w e r e a l l o c a t e d t o s u b ' , ' s u b p l o t s . t h e t r e a t m e n t s w e r e a r r a n g e d a s s p l i t ' , ' s p l i t p l o t s i n a r a n d o m i z e d c o m p l e t e b l o c k d e s i g n w i t h t h r e e r e p l i c a t i o n s . t h e f o r a g e d r y m a t t e r y i e l d f o l l o w e d a n i n c r e a s i n g t r e n d a s n i t r o g e n f e r t i l i z e r a n d s o w i n g d e n s i t y i n c r e a s e d . t h e h i g h e s t f o r a g e d r y m a t t e r o f a r o u n d 3 4 0 0 0 k g / h a w a s a c h i e v e d a t 1 7 0 0 0 0 p l a n t s / h a w h i l e r e c e i v i n g 3 0 0 k g / h a o f n i t r o g e n . t h e l a r g e s t o r a n g e f r u i t d i a m e t e r w a s o b s e r v e d i n 1 0 0 k g n / h a a n d 8 0 0 0 0 p l a n t s / h a w h i c h w a s n o t s i g n i f i c a n t l y d i f f e r e n t f r o m 3 0 0 k g o f n / h a t r e a t m e n t . ' ]

میزبانی شده توسط پلتفرم ابری doprax.com

copyright © 2015-2023