Pfaffia glomerata (Spreng) Pedersen, also known as Brazilian ginseng, has been used in popular medicine due to its important medicinal qualities. This study aims to characterize the nutrient needs of P. glomerata, (Chapter ...

Rice is the main source of inorganic arsenic (Asi), a carcinogenic substance, in the human diet. In this sense, there is great interest in reducing the accumulation of As in rice grains. To achive this, field management / ...

The goal of this research was to determine relationships between nitrogen (N) and water availabilities and growth of lettuce plants. In the first chapter, experiments were conducted in autumn-winter and spring-summer 2013 ...

Iron (Fe) is an important micronutrient for several physiological processes of plants. However, Fe toxicity is a problem that affects many areas of rice cultivated in lowland environments. The antagonistic interaction ...

The goal of this research was to evaluate phosphorus and nitrogen concentrations on growth and in soilless lettuce plants. Experiments were carried out inside a polyethylene greenhouse at Plant Science Department at the ...