Hello Luciano Gatiboni. Good to meet you. Would you like to introduce your detailed work about soil fertility in south of Brazil. Maybe we can have a talk.

I work at an altitude region (1000 - 1400 m above sea level) and our soils have high content of organic matter and are very acidic. There are many plantations of pine and eucalyptus, pine being planted without fertilizer use and eucalyptus with much use of phosphorus. My research is to characterize the forms of phosphorus in the soil, especially organic P forms using the Hedley´s fractionation and magnetic resonance of P. Best regards,

Hello Manuela, here in my region there are many pine and eucalyptus plantations and many pulp industries. These industries produce waste alkali, such as dregs and grits, which can be used to correct soil acidity. We have studied these materials in our university with master and doctorate students, and have found that these materials can be used to correct acidity, but sometimes they have high sodium content and, therefore, must be analyzed before the residue use. The Farmers are using these waste in apple orchards and corn or soybeans plantations too.

Manuela, you can use these products directly on soil and in the beggining of the use, the industry give it free for farmers, but now they sell it to them. The costs are about a half than use lime. the quantity used is the same of lime because the corrective power is the same.

Nice to be a part of this wonderful group ...Prof Luciano..hope , we will have some nice discussion on various issues...