Results 271 to 280 of about 140,396 (311)
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Ammonia Emission from Mineral Fertilizers and Fertilized Crops

2004
Abstract A thorough understanding of the physical and chemical processes involved in NH 3 emission from inorganic N fertilizers and fertilized crops is required if reliable and operational NH 3 emission factors and decision support systems for inorganic fertilizers are to be developed, taking into account the actual soil properties, climatic ...
Sommer, G.   +2 more
openaire   +2 more sources

Mineral nutrition and fertilizers

1992
Fertilization is an important part of the normal intensive production of tea. Optimum fertilizer applications, in association with other appropriate cultural practices, should produce high yields. For the most effective use of applied fertilizer many soils need to be improved so that they include a higher proportion of organic matter.
D. Bonheure, K. C. Willson
openaire   +1 more source

Maize yield responses to mineral fertilization

Cereal Research Communications, 2006
The maize field trails were set up on loessive pseudogley at site Krizevci in central Croatia and they were conducted during three vegetations. The soil exhibited moderately acid reaction (pHKCl=4.96), low humus content (2.1 %), and averagely supplied with available P2O5 and K2O (148 and 122 mg kg-1, respectively).
Bertic, Blazenka   +5 more
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Mineralization and nitrification of ureaform fertilizers

Fertilizer Research, 1988
In an attempt to produce N materials that exhibit some delayed-release character and yet make all the N available in one growing season, ureaform (UF) fertilizers were prepared using low amounts of paraformaldehyde (PFA) (6% to 15% PFA w/w). Mineralization and nitrification of the various water-soluble components of these UF materials were studied over
C. B. Christianson   +2 more
openaire   +1 more source

Organic manures and mineral fertilizers

2007
Until the mid 19th century organic manures were the only way of returning plant nutrients to soil and in some countries organic manures are still the principle source of nutrients. The increasing use of mineral fertilizers during the last 150 years has made a major contribution to increasing food production worldwide.
openaire   +1 more source

DIFFERENTIATED APPLICATION OF MINERAL FERTILIZERS

"ITSE 2024" Conference
Differentiated application of mineral fertilizers is a technology for applying fertilizers with automatic dose adjustment during unit operation based on a dose adjustment algorithm. Mineral fertilizers are used to improve soil fertility, increase yields, and improve the quality of agricultural products.
D.V. Rudoy   +5 more
openaire   +1 more source

Spreading of solid mineral fertilizer

1995
En matière d'épandage d'engrais, appliquer la juste dose uniforme était jusqu'à ce jour un objectif agronomique évitant la sous ou surfertilisation. Mais, désormais, par le fait de l'actualité réglementaire, appliquer la juste dose uniforme sera non seulement conseillé mais obligatoire sur les zones vulnérables.
Le Du, J.   +5 more
openaire   +1 more source

Fertilizer Replacement Value : Linking Organic Residues to Mineral Fertilizers

2020
Organic residues of animal origin are an important nutrient source for crop production. Due to the presence of organic nutrients, manures are more difficult to manage than mineral fertilizers. The increasing diversification in available organic residues makes the need for a correct assessment of the fertilizing value.
Schils, René   +2 more
openaire   +1 more source

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