Nitrogen-Use-Efficiency (NUE) in Plants Under NaCl Stress

摘要: Increasing population growth rate, shortage of good arable land, use low quality water coupled with intensive cropping system are forcing crop production into more marginal environments and thus, limiting the adaptation productivity food crops. In Pakistan, considerable information is available regarding nitrogen (N) requirement plants grown in normal healthy soils. But scanty accessible salt-affected soils, which cover an area about 11.5 × 106 ha. The unfavorable conditions as well inadequate imbalance N such soils affecting decline yield. No doubt, soil salinity alters metabolism but, fertilizers affects dilution to alleviate detrimental effects moderate helps improve economic yield concentration soluble cations anions solution high enough induce stress, specific ion nutrient generally decrease ultimately harvestable Generally, fertilization increases at NaCl compared situation where a major factor. Various experiments have been conducted determine appropriate fertilizer rates for different textured protection environment while achieving Since, due physical chemical properties requirements other mineral nutrients crops on than those Therefore, farmers will be economically benefited by judicious optimum from their land resources without disturbing biosphere equilibrium. Increased farm income help rural poverty migration urban areas another benefit during amelioration using amendments waters. This chapter presents account NUE under influenced salt stress.