Native and low‐input grasses‐a New Zealand high country perspective

Abstract

Native, naturalised, pasture, and new grass introductions are discussed in terms of concepts of moisture, temperature, fertility, and utilisation gradients; characteristics of the New Zealand high country environment; and their utility for introduction into low-input pastoral systems. The perennial, long-lived habit of native grass is mimicked in introduced grasses. Poa colensoi is the best native grass, but there is a need for wider evaluation of serai non-tussock species. There is a greater frequency of spreading habit and annuals in naturalised low-input species. The "try it and see" and genotype/environment analysis are advocated for screening new introductions.

Evaluation of Heavy Metals Content and Human Health Risk Assessment via Consumption of Vegetables from Selected Markets in Bayelsa State, Nigeria

“…The uptake and bioaccumulation of heavy metals in vegetables are influenced by many factors such as climate, atmosphere depositions, the concentrations of heavy metals in soil, the nature of soil and the degree of maturity of the plants at harvest [1,2]. Air pollution may pose a threat to post-harvest vegetables during transportation and marketing causing elevated levels of heavy metals in vegetables.…”

Heavy Metals Contamination in Greenhouse Soils and Vegetables in Guanzhong, China

“…Elevated levels of metals in agricultural soils were the results of atmospheric deposition, wastewater irrigation, sludge amendment, and fertilizer application, as well as industrial activities, in particularly the metallurgical industries [4] [5]. The uptake and bioaccumulation of heavy metals in vegetables are influenced by a number of factors such as climate, atmospheric depositions, the concentrations of heavy metals in soil, the nature of soil on which the vegetables are grown and the degree of maturity of the plants at the time of harvest [6] [7]. Furthermore, it is a direct basis for rational fertilization.…”

Spatial variation in Heavy Metal residue in <i>Corchorus olitorious</i> cultivated along a Major highway in Ikorodu- Lagos, Nigeria

“…The uptake and bioaccumulation of heavy metals in vegetables are influenced by many factors such as the prevailing climatic condition, depositions from the atmosphere, the concentration of heavy metals in soil, the nature of soil and the degree of maturity of the plants at harvest. (Scott et al, 1996;Vousta et al, 1996).…”