نتایج جستجو برای: slow release fertilizers

تعداد نتایج: 330073  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علم و صنعت ایران - دانشکده مهندسی شیمی 1386

مصرف کود شیمیایی یکی از نیازهای حیاتی گیاه را تامین می کند کمبود عناصری همچون ازت فسفر، پتاسیم، گوگرد وسایر عناصر مورد نیاز گیاه می تواند از طریق کودهای شیمیایی تامین می گردد. دسته مهمی از کودهای شیمیایی مورداستفاده در ایران کودهای ازته هستند حلالیت بالای کودهای ازته و در نتیجه اتلاف مقادیر زیاد آنها سبب کاهش کارایی و بازده مصرف این کود درکشور گردیدهاست به همین دلیل مدیریت مصرف ازت در کشور از ا...

Journal: :Anaesthesia 1985

Journal: :Journal of Cleaner Production 2021

Due to the finite stocks of phosphate rock and low phosphorus (P) use efficiency (PUE) traditional mineral P fertilizers, more sustainable alternatives are desirable. One possibility is culture microalgae in wastewater recover then convert biomass into slow-release fertilizers through hydrothermal carbonization (HTC). Therefore, this study aimed recycle from agricultural field using HTC technol...

Journal: :Journal of environmental biology 2011
Vinod K Sharma Rana P Singh

Field experiments were conducted to study the effect of organic matrix based slow release fertilizers (SRFs) on plant growth, nitrate assimilation and seed yield of Brassica juncea L. cv, pusa bold. The agro-waste materials like cow dung, clay soil, neem leaves and rice bran were mixed together in 2:2:1:1 ratio and used as organic matrix for the immobilization of chemical fertilizer nutrients w...

Journal: :Current Agriculture Research Journal 2023

Improved crop quality and quantity is the main target of soil fertilization in conventional agriculture. However, organic agriculture, adding nutrients to threshold replenishment lost through every crop. Mineral fertilizers provide essential macro microelements plants for their active growth development. Unfortunately, these kinds easily run off from plant vicinity because frequent watering rai...

Journal: :Atmosphere 2022

Ammonia (NH3) volatilized from cropland significantly impacts the ecological environment and human health. The identification quantification of atmospheric sources NH3 are therefore important for emission reduction air pollution control. Choosing appropriate nitrogen (N) fertilizer types is one key ways to reduce emissions agricultural systems due different N fertilizers with factors. natural a...

2009
S. H. Chien L. I. Prochnow

This chapter provides information on some recent developments of fertilizer production and use that improve nutrient efficiency and minimize environmental impact. The nutrients discussed are mainly N, P, and S. Improving N nutrient efficiency includes use of (1) controlled-release coated urea products, (2) slowrelease urea–aldehyde polymer products, (3) urea supergranules for deep placement, (4...

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