Studies on controlled potassium fertilizers
نویسندگان
چکیده
منابع مشابه
Cumulative release characteristics of controlled-release nitrogen and potassium fertilizers and their effects on soil fertility, and cotton growth
To investigate the interacting effects of polymer coated urea (PCU) and polymer coated potassium chloride (PCPC) on cotton growth, an experiment was conducted with containerized plants in 2014 and 2015. There were two kinds of nitrogen fertilizer, PCU and urea, which were combined with PCPC at three application rates (40, 80 and 120 kg ha-1). The kinds of nitrogen fertilizer formed the main plo...
متن کاملCadmium availability from granulated and bulk-blended phosphate-potassium fertilizers.
Recent field experiments have shown that high chloride (Cl) in irrigation waters can increase soil cadmium (Cd) uptake by crops because of the formation of soluble ion-pair complexes of Cd with Cl in soil solution. The present study was aimed at testing a hypothesis that KCl in granulated PK fertilizers may enhance Cd uptake by crops from Cd-containing P fertilizers because of close contact bet...
متن کاملControlled - Release Fertilizers : Advances and Challenges
Controlledrelease fertilizers (CRFs) offer an excellent option to improve nutrients uptake by plants and reduce the environmental hazards due to excess release of chemicals. Polymer-coated fertilizers, compared to the other types of CRF, are by far the most intensively researched topic because of their great characteristics. Polymercoated fertilizers, which are less sensitive to the soil and en...
متن کاملThe influence of organic fertilizers application on phosphorus and potassium bioavailability
A prerequisite to use organic fertilizers in a sustainable way is to quantify the amount of phosphorus and potassium available for plants that could be taken up by a crop. The objective of this study was to evaluate direct and subsequent influence of organic fertilizers addition (poultry manure and two types of composts) on the changes of bioavailability of phosphorus and potassium in soil and ...
متن کاملStudies on Potassium Chloride Based –controlled Release Fertilizer Made from Sand– Cement Matrix Coated with Napthalene
Department of Chemical Engineering, A. U. College of Engineering (A), Andhra University, Visakhapatnam – 530 003, Andhra Pradesh, INDIA. Email: [email protected], Phone: +919959340230 ABSTRACT: Sand matrix based KCl controlled release fertilizer is made and tested. The parameters of the study are initial fraction of KCl, fractional binder, Fractional inert, Diameter of the pellet and P...
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ژورنال
عنوان ژورنال: Soil Science and Plant Nutrition
سال: 1978
ISSN: 0038-0768,1747-0765
DOI: 10.1080/00380768.1978.10433083