Ritstjóri: Sigrún Þorgeirsdóttir
Leitarorð Leitartungumál
Nánari leit  |  Fletting sviða

Hugtakasafn : Eitt hugtak
ÍSLENSKA
aðalnæringarefni
ENSKA
primary nutrient
DANSKA
primært næringsstof
SÆNSKA
primärt näringsämne
FRANSKA
élément fertilisant primaire
ÞÝSKA
primärer Nährstoff
Svið
landbúnaður
Dæmi
[is] Hráfosfat, sem er uppleyst að hluta, er tegund áburðar, sem inniheldur aðalnæringarefni, sem er skráð í I. viðauka við reglugerð (EB) nr. 2003/2003. Samkvæmt 16. gr. þeirrar reglugerðar er heimilt að bæta aukanæringarefnum við allar tegundir áburðar sem innihalda aðalnæringarefni.

[en] Partially solubilised rock phosphate is a primary nutrient fertiliser type listed in Annex I to Regulation (EC) No 2003/2003. Article 16 of that Regulation permits the addition of secondary nutrients to all primary nutrient fertiliser types.

Skilgreining
[en] the elements nitrogen, phosphorus and potassium only (IATE); the mineral nutrients are divided into two groups: macronutrients and micronutrients.
Macronutrients
Macronutrients can be broken into two more groups:
primary and secondary nutrients.
The primary nutrients are nitrogen (N), phosphorus (P), and potassium (K). These major nutrients usually are lacking from the soil first because plants use large amounts for their growth and survival.
The secondary nutrients are calcium (Ca), magnesium (Mg), and sulfur (S). There are usually enough of these nutrients in the soil so fertilization is not always needed. Also, large amounts of Calcium and Magnesium are added when lime is applied to acidic soils. Sulfur is usually found in sufficient amounts from the slow decomposition of soil organic matter, an important reason for not throwing out grass clippings and leaves (http://www.ncagr.gov/cyber/kidswrld/plant/nutrient.htm)

Rit
Stjórnartíðindi Evrópusambandsins L 282, 29.12.2009, 7
Skjal nr.
32009R1020
Athugasemd
Sbr. ,aukanæringarefni´ (e. secondary nutrient)
Orðflokkur
no.
Kyn
hk.