Nitrogen distribution, remobilization and re-cycling in young orchard of non-bearing ‘Rocha’ pear trees

Impact of Foliar Application of Urea on, Fruit Set, Return Bloom and Growth of Apple cv. Red Delicious

“…Neto et al, (2008) concluded that nitrogen uptake was minimum at bud break and peaked in June/July remaining more or less constant until leaf fall.…”

The water adaptability of Jatropha curcas is modulated by soil nitrogen availability

“…Moreover, N determines the synthesis of all cellular components and is commonly associated with tree growth and vigor, two characteristics that, if managed with care, are of the outmost importance for the development of newly planted trees so that they are able to maximize their flower setting and yield potential. Too much or less vigor can be a result of N imbalance and can compromise the onset of bearing or even the yield in the first years [6]. Modern farming requires increasingly fine management of N fertilization due to economical and environmental constraints.…”

Contribution of mineral N to young grapevine in the presence or absence of cover crops

“…Thus, leaves and shoots act as N drain during the vegetative growth of young grapevines (Zapata et al, 2004), as observed by Menino et al (2007) and Neto et al (2008), both in Portugal, for young non-bearing orange trees (Citrus sinensis L.) and deciduous fruit trees (Pyrus communis L), respectively. Table 4.…”

“…N isotope has been used as a tracer in studies of plant N recovery and accumulation in plant organs (Menino et al, 2007;Neto et al, 2008;Brunetto et al, 2014), because it enables an accurate tracking of the amount of fertilizer N absorbed and its fractionation in plant organs. Intercropping vineyards with cover crops has been used but information on its potential competition is scarce.…”