Search results for "Mineral fertilization"

Biomass of spring barley (Hordeum vulgare L.) in relation to fertilising

2016

Bioindicators and nutrient availability through whole soil profile under orange groves after long-term different organic fertilizations

2019

We investigated long-term (18 years) effects of three organic (cow manure (CM), poultry manure (PM), compost from agro-industry orange wastes (OW)) and one inorganic fertilization (IF) on various soil biological indicators (microbial biomass C, soil respiration, total phospholipid fatty acids (PLFAs), total bacteria, Gram-positive and Gram-negative bacteria and fungi) and nutrient contents (total and extractable organic C, total and mineral N, available P and K) along the profile of a Typic Haplustept under orange Mediterranean orchards. All fertilizers were added on the same N content basis (190 kg N ha−1 per year). Variables related to carbon cycling gradually worsened with depth, regardl…

Soil Quality as Affected by Intensive Versus Conservative Agricultural Managements

2017

Soils, the earth’s skin, are at the intersection of the lithosphere, hydrosphere, atmosphere, and biosphere. The persistence of life on our planet depends on the maintenance of soils as they constitute the biological engines of earth. Human population has increased exponentially in recent decades, along with the demand for food, materials, and energy, which have caused a shift from low-yield and subsistence agriculture to a more productive, high-cost, and intensive agriculture. However, soils are very fragile ecosystems and require centuries for their development, thus within the human timescale they are not renewable resources. Modern and intensive agriculture implies serious concern about…

Effect of fertilisation on the changes of soil pH and exchangeable aluminium content in soil

2015

W pracy oceniono stopień zakwaszenia gleby oraz zawartość glinu wymiennego w zależności od rodzaju zastosowanego nawozu mineralnego oraz jego dawki. Badania prowadzono w oparciu o doświadczenie wazonowe z jęczmieniem jarym odmiany browarniczej Propino. Uzyskane wyniki wskazują, że największe zakwaszenie oraz największe zawartości glinu wymiennego stwierdza się w warunkach stosowania nawożenia w kombinacji NPK wraz z saletrą amonową. Zastosowany w różnych dawkach siarczan wapnia dwuwodny nie wpłynął na zmianę odczynu gleby, a odnotowana zawartość glinu wymiennego była niższa niż w kombinacji NPK wraz z saletrą amonową.

Root uptake, storage and remobilisation of autumn applied nitrogen to kiwifruit (Actinidia deliciosa) vines

2000

L'absorption racinaire, la subdivision, la conservation, et la redistribution de l'azote au niveau des racines ont ete etudiees sur des jeunes plantes de kiwi cv « Hayward », portant des fruits et cultives en pots. Deux rations de nitrate d'ammonium enrichi en 15 N [3,3 g (LN) et 10,0 g (HN) N par plante] ont ete distribuees 1 mois avant la recolte des fruits. Les fruits de kiwi ont absorbe 44-68 % du 1 5 N fourni a l'automne, qui a ete stocke principalement dans le systeme racinaire (61 %). Le 15 N a represente 22 et 36 % respectivement de l'azote total contenu dans les fruits des plantes LN et HN. Les feuilles ont retenu la plus grande partie de l'azote marque au cours de la senescence et…