203 results for group: agriculture-1
Performance evaluation of phonolite through mineral form and enrichment of filter cake in sugarcane ratoon
In order to evaluate the performance of phonolite as a source of potassium in fertilization management of sugarcane ratoon through mineral and organo-mineral forms, an experiment was installed in November of 2011 in Casa Branca, SP, Brazil, in soil type red-yellow Latosol Dystrophic medium texture, with variety SP 801816, in third yield, harvested mechanically with no fire. The experiment was designed using random blocks with four replications. The treatments were: T1-Control; T2- Mineral Phonolite 8.5% dose 70 kg ha-1 of K2O; T3- Mineral Phonolite 8.5% dose 100 kg ha-1 of K2O; T4- Mineral Phonolite 8.5% dose 130 kg ha-1 of K2O; T5- Mineral Phonolite ...
ACTION OF MICROORGANISMS IN BASALT POWDER
Stonemeal is the application of crushed rocks in the soil. The objective of this work was to observe the action of microorganisms (inoculated and native) on the mineralization of basalt rock dust and to measure the elements released into the soil. This assessment was done by comparing decomposing particles of basalt powder applied to humic A horizon of a soil derived from granite. The basalt powder was collected at Cavinatto quarry, situated in Limeira-SP (Brazil). The experiment is being conducted in vitro, in isolated plastic containers with the following treatments: 1) soil; 2) sterilized soil; 3) soil without sterilization and with addition of ...
Remineralization of agricultural soils using residues from the amethyst and agate extracting industry, Rio Grande do Sul, Brazil
Brazil is the world’s fourth largest consumer of fertilizers, which is only behind consumers such as China, India and the USA. Therefore, it is crucial to coordinate the production and consumption of this type of product, through appropriate policies, industrial and technological development of mineral exploration and beneficiation of mining activity in the country. With this in mind, it becomes essential to assess the viability of using alternative sources of nutrients, as well as using the waste from mining and extracting industries of precious gems, as remineralizers. Thus, it is possible to reach improvements in soil fertility by transforming ...
Soil Rejuvenation in Mauritius
Mauritius is a tropical island of volcanic origin. The high altitudes attained lead to wide variation in precipitation. To windward, and on the higher altitudes this precipitation may be very high; to leeward, protected by the intervening heights, low precipitation is found. There is, too, only a slight difference in temperature at all altitudes. In the regions of higher precipitation, therefore, the conditions are favorable for a rapid depletion of the soils and the parent basaltic matrix in such areas has broken down, leaving lateritic soils which are very infertile.
Possibilities for Development of the Wood and Forestry Economy in Germany that Include Remineralization
Schwalm-Eder County in North Hesse is especially noteworthy for forestry research because of the potential for developing reforestation on a large scale, especially for the transformation of agricultural land into forests. There is so much overproduction in the agricultural Common Market that about 70% of the agricultural budget of $25 billion is used for the storage of overproduction or for the destruction of it. This has to lead at some point to less intensive agricultural production. The Common market now covers only 40% of its wood requirement; and aside from Japan, the Common Market countries import the most tropical wood, especially from West ...
Applications of Diabase Rock Dust in Brixlegg Forest
Foresters are applying lime in the Austrian forests against acid rain. They know that lime is too alkaline and destroys the humus because it destroys the acid-alkaline balance. Lime destroys the nitrogen compounds in the humus and it leaches nitrogen into the water which is a pollutant. Measurements show that with acid rain comes about 40, 50, 60 kilos of nitrogen per hectare.
The Weathering Properties of Silicate Rock Dust Under Laboratory Conditions
The ion exchange of the primary minerals is one of the central topics from the perspective of geological and soil scientific studies as well as papers concerning plant nutrition. The latter has been given great importance in the last years and decades as can be seen from the numerous publications addressing this theme. Today primary broadspectrum minerals hardly play a role as a carrier of nutrients in conventional agriculture
Information for the Application of Silicate Rock Dust for the Amelioration of Forest Soils
This report contains information for “fertilization with rock dust” with an orientation towards practical application. The widely used term “gesteinsmehl” will be limited here to pulverized rocks of silicate origin.
Pot Test Trial II of Basalt, Serpentine, Bentonite, Feldspar, and Kaolin
This is a report on the second set of pot test trials run by Dr. Gernot Graefe at the Gartnerhof in Ganserndorf Sud near Vienna.
Compensational Fertilization with Silicate Rock Dust For Buffering Damaged Forest Soils: First Experential Report
The fertilization of forest areas has increased substantially in recent years. In all, since 1982 over 500,000 hectares of forest were fertilized which is more than 7% of the forest area (in Germany). On about 95% of the areas fertilized in 1988, magnesium-containing lime (various types such as dolomite, limestone, etc.) was applied. On about 15% of the area, additional fertilization with several minerals, containing potassium and phosphorus were applied, in addition to the limestone.
