The Effect of Nitrogen fertilizer and Poultry Manure on Yield and Nitrate Residuals in Autumn Onion Crop in Jiroft Region
Article Type:
Research/Original Article (دارای رتبه معتبر)

This study was conducted to evaluate the application of poultry manure and urea fertilizer in onion in the randomized complete block design with three replications during 2018 and 2019. The treatments were:1-Control (276 kg/haN), 2-Recommended optimal nitrogen limit for the region crop (184 kg/haN)+Optimal consumption of other nutrients, 3- nitrogen consumption 25% more than the optimal limit+Optimal consumption of other nutrients, 4-Consumption of nitrogen 25% less than the optimal limit+five t/ha of poultry manure+optimal consumption of other nutrients and 5-Consumption of nitrogen 25% less than the optimal limit+tent/ha of poultry manure+Optimal consumption of other nutrients. The results showed that the effects of treatments on yield, the concentration of other elements, and nitrate residuals in onion bulbs and leaves were significant at the level of 1% probability. The control had the lowest yield (43.3t/ha) and the highest nitrate residuals (184.3 and 571.2mg/kg, respectively) and the lowest concentrations of potassium, iron, zinc, and manganese in bulbs and leaves. Also, treatment five showed the highest yield (25.1% increase compared to the control), and no significant difference in yield was observed between treatments four and five. The lowest nitrate residuals in bulbs were in treatment four, which was 69.9%, 21.7, 43.3, and 3.4% less than treatments one, two, three, and five, respectively. The application of treatment four, while reducing the consumption of urea fertilizer by 50% and as a result of reducing nitrate in bulbs to less than the critical level and increasing the yield by 18%, resulting in about 11% more revenue than the control.

Iranian Journal of Soil and Water Research, Volume:52 Issue: 9, 2021
2415 to 2425  
دانلود و مطالعه متن این مقاله با یکی از روشهای زیر امکان پذیر است:
اشتراک شخصی
با عضویت و پرداخت آنلاین حق اشتراک یک‌ساله به مبلغ 990,000ريال می‌توانید 70 عنوان مطلب دانلود کنید!
اشتراک سازمانی
به کتابخانه دانشگاه یا محل کار خود پیشنهاد کنید تا اشتراک سازمانی این پایگاه را برای دسترسی نامحدود همه کاربران به متن مطالب تهیه نمایند!
  • حق عضویت دریافتی صرف حمایت از نشریات عضو و نگهداری، تکمیل و توسعه مگیران می‌شود.
  • پرداخت حق اشتراک و دانلود مقالات اجازه بازنشر آن در سایر رسانه‌های چاپی و دیجیتال را به کاربر نمی‌دهد.
In order to view content subscription is required

Personal subscription
Subscribe for 50 € euros via PayPal and download 70 articles during a year.
Organization subscription
Please contact us to subscribe your university or library for unlimited access!