UV-B radiation effects on nutrient concentrations in above-ground organs of maize were investigated at silking and maturity at different levels of applied nitrogen under field conditions. The experiment simulated a 20% stratospheric ozone depletion over Portugal. At silking, UV-B increased N, K, Ca, and Zn concentrations, whereas at maturity Ca, Mg, Zn, and Cu increased and N, P and Mn decrease...

population growth as well as global fresh water shortage problem have necessitated the use of unconventional water resources in agricultural sector, as the largest consumer of fresh water, especially in arid and semi-arid regions. in this study, the effect of four irrigation methods on yield, uptake of water and important nutrients, and the salt accumulation in soil was investigated using a com...

El mango cv. Tommy Atkins es cultivado en el departamento del Tolima, principalmente, lugar donde expresa su mejor comportamiento agronómico y calidad de la fruta. objetivo fue evaluar estado nutricional las plantas cuantificar extracción nutrientes por fruta función orden suelo se cultiva. Las concentraciones cada nutriente variaron entre fases muestreadas órgano (hojas, flor fruto) (Entisol e...

Field and greenhouse studies have confirmed that wattle brush ash may cause marked increases in yield . when sugarcane is grown in certain midland soils. This effect was associated with the following factors: (i) decreased soil acidity (ii) increased P and K uptake by the plant (iii) increased soil exchangeable Ca, Mg, P, K and base saturation values (iv) reduced soil levels of A1 and Mn (v) re...

Plant species, regional conditions and management practices haveeffects on plant nutrient uptake; however, its study is complex as their effects occur all at the same time. This compares foliar contents of Brosimum alicastrum (evergreen), Cordia dodecandra (deciduous), Spondias purpurea (deciduous) tree individuals growing in homegardens forest two climate regions. 20 per species associated soi...