3 results for group: rock


Rock dust as a source of nutrients for upland rice crop

ABSTRACT: Some farmers use rock dust as a cheap and efficient alternative to supply nutrients to plants. It is known that rock dust has the potential to replace chemical fertilization in organic production or it may complement chemical fertilization in other production systems. Thereby, the aim of this research was to evaluate the response of upland rice under different doses of rock dust. The experiment was carried out at Fazenda Cachoeira, Raul Soares city, Minas Gerais (MG), Brazil with an altitude corresponding to 360 m, sandy-clay soil. It was used BRSMG Caravera cultivar. Analysis of rock dust and soil before and after fertilization were ...

Potential of basalt dust to improve soil fertility and crop nutrition

ABSTRACT: The search for higher yields, lower production costs, and increased sustainability in agriculture implies optimizing crop nutritional management. In this sense, basalt dust has shown potential to improve soil fertility and crop nutrition. Thus, the goal was to evaluate the potential use of basalt dust in a controlled environment. First, an experiment was carried out on soils with contrasting textures (sandy and medium) under a random design, with four replications. These soils were incubated with basalt dust doses for 90 days, and later analyzed for chemical properties. Then, after soil incubation, four experiments were carried out in a ...

Rocks for Crops: Agrominerals of sub-Saharan Africa.

A productive and sustainable agricultural system is fundamental to the well being of a nation and a cornerstone of its development. In most of sub-Saharan Africa, more than 50% of the population rely on agriculture for their livelihood, which generally contributes more than 30% of the Gross Domestic Product (GDP). Agriculture is the major source of income, employment, food security and survival for the majority of the population. While agricultural production is steadily increasing in sub-Saharan Africa, the population is growing faster than food production. The result is a net decline in per-capita food production, which contributes to increased food ...