Inorganic fertilizer use across Sub-Saharan Africa is generally considered to be low. Yet, the notion that fertilizer use is too low is predicated on the assumption that it is profitable to use rates higher than currently observed. There is, however, limited empirical evidence to support this. Using a nationally representative panel dataset, this paper empirically estimates the profitability of...

INTRODUCTION This report summarizes the results of a screening evaluation of arsenic, cadmium, and lead in fertilizer products. This evaluation was conducted by the Minnesota Department of Health (MDH), at the request of the Minnesota Department of Agriculture (MDA), to evaluate potential health risks from fertilizer products sold in Minnesota (MDA 1998a; MDH 1998a). This report includes: (i) t...

While the current food security is fulfilled in China, the substantial nitrogen fertilizer use has caused many far-reaching environmental problems. Therefore, reforming the fertilizer management is the key toward sustainable agriculture for 1.3 billion people. The present study is intended to test the applicability of a nitrogen fertilizer management approach for corn production developed in U....

Fertilizer was applied annually for eight years to individual ramets in a loblolly pine (Pinus taeda L.) seed orchard at rates ranging from 0 to 448 kg nitrogen (N) ha(-1) year(-1). Clonal effects accounted for a major source of variation in both flowering and foliar nutrient concentrations. Foliar N concentrations were generally correlated with the intensity of fertilizer application, but were...

The purpose of this study was to determine the increasing Growth Oil Palm (Elaeis guineensis Jacq) Seedlings in Pre-nursery due Urea and NPK Treatment. used a Completely Randomized Design (CRD) consisting first factor fertilizer (U) which consisted 3 treatment levels, namely U0 = control, U1 1.0 g baby polybag-1, U2 2.0g while (N) N0 N1 polybag-1 N2 2.0 polybag-1. results showed that with excep...