soil fertility 4 [vynechat] damage to soils 3 [vynechat] pedology 3 [vynechat] pedológia 3 [vynechat] pôda 3 [vynechat] soil properties 3 [vynechat] soils 3 [vynechat] vlastnosti pôdy 3 [vynechat] úrodnosť pôd 3 [vynechat] poškodenie pôdy 2 [vynechat] composts 1 [vynechat] degradácia pôdy 1 [vynechat] humus 1 [vynechat] komposty 1 [vynechat] morské riasy 1 [vynechat] organic fertilizers 1 [vynechat] organické hnojivá 1 [vynechat] pôdy 1 [vynechat] seaweeds 1 [vynechat] soil 1 [vynechat] soil classification 1 [vynechat] systematická pedológia 1 [vynechat] úrodnosť pôdy 1 [vynechat]