evaluation of relation between weed population and nitrogen use efficiency in wheat as affected by integrated fertilizer management

نویسندگان

سیما قلمباز

امیر آینه بند

عبدالامیر معزی

چکیده

in order to evaluation of relation between weed dynamic and utilization of nitrogen in weed as influence of integrated fertilizer management in different weed densities, a field experiment was carried out in experimental farm of agricultural faculty of shahid chamran university of ahvaz at 2011-2012 growing season. experimental design was based on a split-plot with three replications .main plot was 5 integrated fertilizer managements and sub plot was 3 weed densities. our results showed that the treatment 75% chemical fertilizer whit biological fertilizer in lower weed density had the highest weed density and dry weight. narrow leaf and broad leaf weeds was dominant species in 100% chemical fertilizer and 100% biological fertilizer treatments, respective. also, weed diversely was reduced by reduction. so, treatment 100% biological fertilizer had the highest weed density nitrogen fertilizer utilization efficiency was increased by reduction of nitrogen chemical fertilizer. in addition, all nitrogen useefficiency. indices were more affected by nitrogen chemical fertilizer, than weed density. based on our results,increasing dependence to biological fertilizer, will reduce is the compatibility of wheat plant, in early growth period, which caused increasing in density and decreasing of weed at the wheat growth period.

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

N uptake and yield of wheat as influenced by integrated use of organic and mineral nitrogen

The effect of integrated use of mineral and organic N sources (farmyard manure, poultry manure, and Filter Cake) on yield and N uptake of wheat were assessed in biennial field experiment carried out on silty clay loam soil in Nuclear Institute for Food and Agriculture, Tarnab, Peshawar Pakistan during 2005-07. Combined dose of N provided from all sources was applied @120 kg ha-1. There were 17 ...

متن کامل

Evaluation of Microbial Biomass and Soil Carbon as Well as Weed Parameters on Potato Production Affected Different Weed Management

BACKGROUND: Application of plant mulches plays a significant role in development and expansion of sustainable farming systems. OBJECTIVES: Assessment effect of chemical and non-chemical weeds management methods on weeds density and biomass and the properties of soil, including microbial biomass carbon (MBC) and soil organic carbon (SOC) in potato cultivation. ...

متن کامل

Changes in weed seed banks and the potato yield as affected by different amounts of nitrogen and crop residue

In order to evaluate the impact of crop residues (zero, 25 and 50%) and nitrogen (zero, 125 and 250 kg ha) on weed seed bank and potato yield, two-years research was conducted as a split plot arranged in randomized complete block design in Rozveh Agriculture Research Station, Freidan-Esfahan. Numbers of weed species in seed bank, aboveground, and both seed bank and aboveground were 1, 2 and...

متن کامل

Study of genetic diversity in bread wheat germplasm using nitrogen uptake and nitrogen use efficiency characteristics

In order to evaluate the traits related to nitrogen utilization and to identify the superior genotypes, 33 bread wheat landraces along three check cultivars of Chamran and Koohdasht (from Iran) and Gobustan (from the Republic of Azerbaijan) were studied in simple lattice statistical design with two replications under two treatments of non-usage and application of 200 kg/ha ammonium nitrate fert...

متن کامل

Maize productivity and nutrient use efficiency in Western Kenya as affected by soil type and crop management

Low soil fertility and high weed infestation are the main culprits for the declining maize production inWestern Kenya. Technology packages to address these constraints exist, but their effectiveness is likely to be influenced by variability in soil types and farm management practices in the region. Trials were conducted during the 2008/2009 cropping seasons to investigate the nutrient use e...

متن کامل

Nitrogen and Phosphorus Use Efficiency of Spring Wheat (Triticum Aestivum L.) as Affected by Seed Inoculation With Plant Growth Promoting Rhizobacteria (PGPR)

In order to study of the effect of seed inoculation with PGPR on nitrogen and phosphorus use efficiency of spring wheat in different levels of nitrogen and phosphorus fertilizers, an experimental was conducted at the Research Farm of Mohageh Ardabili University, Ardabil, Iran during 2012 year. The combination of nitrogen fertilizer in three levels (0, 40 and 80 kg N/ha as urea) and phosphorus f...

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:
بوم شناسی کشاورزی

جلد ۵، شماره ۴، صفحات ۴۷۳-۰

کلمات کلیدی

میزبانی شده توسط پلتفرم ابری doprax.com

copyright © 2015-2023