Efficiency of Mineral and Organomineral FLUID Phosphate Fertilizers.

Few if know about the efficiency of fluid fertilizers, mainly, organomineral as phosphorus source for the crops. Therefore, the aim of this research was evaluate agronomic efficiency of mineral fluid fertilizer based water, organomineral fluid fertilizer based liquid swine manure (LSM), as phosphorus (P) source. The experiment was conducted in pots in a greenhouse, in a randomized block designed in  factorial 2x4+2 with four replications, with three sequential crops, including two consecutive black oat crops (cultivation 1^st and 2^nd) and one millet crop (cultivation 3^th). The treatments were: The treatments were: control characterized by the absence of nutrients, phosphorus (P) control  characterized by the absence of P only, mineral (MF-P) and organomineral fluid fertilizer (OF-P) and, solid fertilizer granulated form (MS-P) applied in Typic Hapludox (TH) and Typic Quartzipsamment (TQ). Solids phosphate fertilizer and liquid phosphate fertilizer increased the amount of accumulated P in the shoots, especially the fluid fertilizer (MF-P and OF-P) in TQ in the three sequential crops. In TH soil greater accumulation of P occurs with fluid fertilizers only the first crop, while in the second and third crop there is no difference between fertilizers (MS-P, MF-P and OF-P). The MF-P and OF-P fertilizers presented higher efficiency in utilization of phosphorus by the plants in relation to the mineral fertilizer in solid form in all crops, with the highest efficiency ratios demonstrated in TQ relative to HT.