Results 21 to 30 of about 7,058,324 (263)

EFFECT OF K-FELDSPAR ROCK FERTILIZER ON GROWTH AND MINERAL CONTENT OF MORINGA SEEDLINGS (MORINGA OLEIFERA) [PDF]

open access: yesScientific Journal of Flowers and Ornamental Plants, 2014
A field experiment was conducted at the Botanical Gardens Research Department Land, Hort. Res. Inst. Alex., Egypt,during 2011-2012 and 2012-2013 seasons to study the effect of Kfeldspar rock fertilizer on growth and mineral content of Moringa seedlings ...
A Abou-Amer, H. El-Tayeb
doaj   +1 more source

On the relationship between K concentration, grain size and dose in feldspar [PDF]

open access: yes, 2018
Previous work has been unable to establish a relationship between K concentration and De in single-grains of feldspar. Here we use four well-bleached sediments with low external dose rate (typically =1.5 Gy ka-1) to investigate this relationship.

core   +1 more source

Bleachability of pIRIR signal from single-grain K-feldspar [PDF]

open access: yes, 2022
The high-temperature (e.g., >200 °C) post-infrared infrared (pIRIR) stimulated luminescence of feldspar has been widely used for dating, because it usually suffers negligibly from anomalous fading.
Hui Zhao (7395)   +4 more
core  

Bleaching of the post-IR IRSL signal from individual grains of K-feldspar: Implications for single-grain dating [PDF]

open access: yes, 2015
Post-IR IRSL (pIRIR) signals from K-feldspar grains measured at elevated temperatures are increasingly being used for dating sediments. Unfortunately the pIRIR signal from K-feldspars bleaches more slowly than other signals (e.g.

core   +1 more source

Electrostatic K-Feldspar/Na-Feldspar and Feldspar/Quartz Separation: Influence of Feldspar Composition [PDF]

open access: yes, 2011
This paper aims at contributing to the possibility of electrically separating K-feldspar/Na-feldspar and quartz/feldspar, investigating the behaviour of mixtures composed of K-feldspar, Na-feldspar and quartz concentrates.
Peretti R, Zucca A., SERCI, ANTONELLO
core   +1 more source

Characterization of potassium solubilizing bacteria isolated from corn rhizoplane

open access: yesAgronomía Colombiana, 2021
Potassium is one of the most important elements in plant growth and development. Most of the potassium reserves on Earth are in insoluble mineral form, which represents a limitation for the absorption of this nutrient by plants.
Reneé Pérez-Pérez   +5 more
doaj   +1 more source

EFFECT OF ORGANIC MANURES AND FELDSPAR APPLICATION ON SOME SANDY SOIL PHYSICAL AND CHEMICAL PROPERTIES AND THEIR REFLECTION ON PEANUT PRODUCTIVITY. [PDF]

open access: yesJournal of Agricultural Chemistry and Biotechnology, 2006
Two field experiments were carried out for two successive seasons of 2004 - 2005 at lsmaiiiia Agric. Res. Station (Agric, Res. Center) to study the effect of organic manure (rice straw compost and chicken manure) application both individually andior both ...
Wafaa Seddik
doaj   +1 more source

K-feldspar 40Ar/39Ar and thermal history data from the Ancient Gneiss Complex, eastern Kaapvaal craton, South Africa [PDF]

open access: yes, 2020
40Ar/39Ar K-feldspar step-heating age spectrum for sample WKC-00-52, multi diffusion domain data, and thermal history modeling information to accompany article 'Vestiges of the ancient: Deep-time noble gas thermochronology' in Elements journal 'Noble Gas
Rebecca Flowers (8664057)   +1 more
core   +1 more source

Rubidium-rich feldspars and associated minerals from the Luolamäki pegmatite, Somero, Finland [PDF]

open access: yesBulletin of the Geological Society of Finland, 1998
Rubidium feldspar occurs near the core zone of the highly fractionated petalite-subtype Luolamäki granitic pegmatite in intimate intergrowth with other feldspars which are part of a characteristic sequence of alteration of pollucite.
D.K. Teertstra   +2 more
doaj   +1 more source

RETIONALIZATION OF MINERAL POTASSIUM FERTILIZER BY USING BIODESOLVING POTASSIUM AND ITS EFFECT ON YIELD AND QUALITY POTATOS. [PDF]

open access: yesJournal of Soil Sciences and Agricultural Engineering, 2012
Potassium is one of the three essential elements viz., NPK needed in large quantities for the growth and reproduction of the plants and it plays many vital roles in plant nutrition.
Wafaa A. Hafez   +2 more
doaj   +1 more source

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