Results 61 to 70 of about 1,190 (203)

Studies on the Acidulation of Soft Phosphate

open access: yesPoultry Science, 1965
Abstract A NUMBER of studies have been conducted to compare the utilization of phosphorus from soft phosphate and other phosphorus sources. The majority of these reports have indicated poor availability of the phosphorus from this source. These studies were reviewed by Motzok et al. (1956) and Nelson and Peeler (1961). Summers et al.
P W, Waldroup, C B, Ammerman, R H, Harms
openaire   +2 more sources

Effect of arbuscular mycorrhizal (AM) fungi inoculation on enzymatic activity and zinc uptake under direct seeded rice system [PDF]

open access: yes, 2017
The application of treatment T3 (Glomus mosseae + 100 % RDF NK) produced significantly more root volume by 72.60 %, 17.80 %, 12.25 %, 14.13 % over the application of treatment T1 (Control), treatment T5 (Glomus coronatum+ 100 % RDF NK), T6 ...
Kumar, Ranjeet, Singh, Mahendra
core   +2 more sources

Effect of water and citrate solubility on agronomic effectiveness of acidulated phosphates in three consecutive corn crops

open access: yesRevista Brasileira de Ciência do Solo, 2002
In the process of phosphate rock acidulation, several impure P compounds may be formed along with the desirable Ca and NH4 phosphates. Such compounds normally reduce the content of water-soluble P and thus the agronomic effectiveness of commercial ...
L. I. Prochnow, B. van Raij, J. C. Kiehl
doaj   +1 more source

Pengaruh Jenis Asam Organik Dan Cara Asidulasi Batuan Fosfat Alam Terhadap Ketersediaan P Pada Pengujian Bahan Pupuk N Zeo Fosfat [PDF]

open access: yes, 2012
Penelitian ini bertujuan untuk mengkaji sifat kimia berbagai jenis bahan organik, pengaruh mandiri dan interaksi jenis asam organik dan cara asidulasi BFA terhadap pH H2O, P tersedia larut air dan asam sitrat 2 % dari BFA.
Hanudin, E. (Eko)   +3 more
core  

Phosphorus recovery from municipal and fertilizer wastewater: China's potential and perspective [PDF]

open access: yes, 2017
Phosphorus (P) is a limited resource, which can neither be synthesized nor substituted in its essential functions as nutrient. Currently explored and economically feasible global reserves may be depleted within generations. China is the largest phosphate
Barjenbruch, Matthias   +4 more
core   +1 more source

Palm oil refinery wastes treatment [PDF]

open access: yes, 1981
Effluent from the refining of crude palm oil was subjected to physical-chemical and biological treatment. An inclined corrugated parallel plates oil separator spaced at 25 mm was used with hydraulic loading rates ofO.2. 0.5 and I m³ mol_h.
Chin, K. K., Wong, K. K.
core   +1 more source

Phytotoxicity of soils of pine forest stands in the conditions of aero technogenic pollution [PDF]

open access: yes, 2019
Материалы статьи посвящены определению фитотоксичности почв сосновых древостоев, произрастающих в зонах действия разных по составу аэротехногенных загрязнений.
Касимова, Ю. Р.   +3 more
core  

Agronomic effectiveness of unacidulated and partially acidulated Minjingu rockphosphates on Stylosanthes guianensis [PDF]

open access: yes, 2013
The majority of soils in Africa are P-deficient, but the high cost of conventional, water-soluble P fertilisers limits their use by resource-poor farmers. Rockphosphates are a low-cost alternative. The relative agronomic effectiveness of unacidulated (RP)
Haque, I., Lupwayi, N.Z., Ssali, H.
core  

PEMBUATAN PUPUK FOSFAT DARI BATUAN FOSFAT ALAM SECARA ACIDULASI

open access: yesTeknik, 2012
Phosphate rock containing P2O5 can be used as raw material of phosphate fertilizer. Phosphate rock canbe found in many areas in Indonesia, but its P2O5-content is relative low. In this research, phosphate rockfrom Rembang (P2O5-content 11.37%) is used as
Faleh Setia Budi, Aprilina Purbasari
doaj  

Biotiitti ja raakafosfaatti apilanurmen lannoitteina [PDF]

open access: yes, 1999
vokKirjasto Aj-kBiotite and rock phosphate as fertilizers for clover-containing grass ...
Kemppainen, Riitta
core  

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