Fertilização fosfatada no crescimento inicial do nabo forrageiro

Abstract

The turnip (Raphanus sativus) has a great production for agriculture, so that it is often used as a cover plant. In addition, it has a deep root. To obtain an adequate development and productivity, it is extremely important that a plant has access to available phosphorus in the soil, so that this nutrient is essential for plants because it is present in several energetic processes. To propose this plant and this nutrient, the aim of this work was to evaluate the development of forage turnip with different doses of phosphorus (0, 80, 160, 240, 320 and 400 mg dm-3). For this, the plants were evaluated for plant height, chlorophyll index, stem and root diameter, number of leaves and dry matter. The experiment was conducted in a greenhouse, carried out at the Federal University of Rondonópolis, in a completely randomized design. The correspond to doses of phosphorus (0, 80, 160, 240, 320, 400 mg dm-3 of P2O5) with five repetitions. It was observed that the control (dose 0) and the highest dose (400 mg dm-3) did not obtain good results. It is observed that a dose of P2O5 that develops better and higher values than others was 320 mg dm-3, which was higher in the following variables: chlorophyll index, stem and root diameter and fresh weight.