Agriculture in Brazil is a means for promoting significant socioeconomic sustainable progress. However, the productivity of cereal crops such as maize, rice, wheat and sorghum is below their potential. The low availability of phosphorus (P) and inadequate fertilization are some of the major challenges of modern agriculture. In tropical soil, the phosphorus is carried out by adding high dosages of water-soluble phosphates, since most of the added fertilizer becomes unavailable because of fixat

Status: Completed     Start date: Mon Oct 01 00:00:00 GMT-03:00 2012

One of analytical techniques that enables precise chemical analyzes with speed, low cost and little sample manipulation is near-infrared spectroscopy - NIRS. The interest in NIR spectroscopy has grown remarkably and this technique has been recognized as a powerful tool for quantitative and qualitative analysis of chemical and physical parameters. Besides these features, the methodologies based on NIR spectroscopy have the following inherent properties: 1) allows simultaneous analysis of multi

Status: Completed     Start date: Fri Apr 01 00:00:00 GMT-03:00 2011

In family farming system, farmers and their families are responsible for agricultural work and for the management of small and medium property. Often, the low purchasing power of the majority and the lack of appropriate technical guidance make farmers adopt undesirable practices while growing maize. The range of satisfactory yields depends, among other factors, on a good soil fertility, seeding in appropriate times, an effective management of insect pests and diseases, and especially quality

Status: Completed     Start date: Sat Oct 01 00:00:00 GMT-03:00 2011