The State of Rio Grande do Sul (RS) has intense water use for irrigated rice production, generating concerns regarding the quality of this water, which will be returned to the water sources at the end of the harvest. Therefore, this study aimed to evaluate the quality of water from rice fields and yield as a function of drainage time.  The treatments were: T1: drainage from full flowering (R4) according to Counce et al. (2000); T2: 7 days after R4; T3: 14 days after R4; T4: 21 days after R4; T5: 28 days after R4; T6 (control): 35 days after R4. At the moment of drainage the leaf height was quantified and the water samples were then collected, where the pH, electrical conductivity, nitrogen (ammonium and nitrate), phosphorus, potassium and sodium solution in solution were quantified of grain yield. All parameters related to water quality studied are in accordance with CONAMA Resolution 357/2005. The productivity results indicate that it is possible to drain irrigated rice from 14 days after full flowering.

Potassium can influence the productivity and the physical and physiological qualities of grains and seeds of flooded rice, although its influence is not clear yet. Based on the necessity of more information, this work presents the evaluation of different stages of potassium application on rice grains productivity, physical quality (whole grain and chalk kernel) and seed physiological quality (vigor and germination). The results show that the potassium fertilization has an influence on the physical quality of rice grains. When performed near to the reproductive stage, it can increase the percentage of whole grains and decrease the chalk kernel index. For producing seeds, all fertilization should be done up to the V3 stage in order to increase the seed vigor.

The soybean is an alternative of diversification and financial return to the rice farmer. However, it presents difficulties of cultivation and low yield due to the physical characteristics of the soil. In this scenario, the objective of this work was to verify the influence of soil scarification, the genetic material used and the sowing date. Three soybean cultivars, with yield potential classified as “medium”, “high” and “very high”, were sown in a scarified and non-scarified area, in the dates november 7th and december 10th, year of 2018. The scarification opperation occurred on october 1st. Initial establishment varied according to cultivar, soil mechanism and sowing date. Soil scarification effect was verified up to 100 days after the operation. Within the construction of the yield potential, scarification accounted for 14.4 %, sowing date 12.5 % and genetic material 73.1 % of crop grain yield, in the “high” and “very high” potential materials.

Information from remote sensing (SR), in the form of images or maps, and the reports or processes associated with its interpretation, have a high potential to be an axis and motivation for informed debates about the reality of regional agricultural production. This process is bidirectional, because the accurate interpretation of the information recorded by the sensors also depends on a deep knowledge of the process and reality of the field, which is recorded by the producer and his team over the years. In this scenario, the Agricultural Satellite Monitoring Workshop was organized, consisting of a motivational presentation, technical visit and video-reports on the monitoring of commercial crops by SR in the 2017/2018 harvest. The importance of this work lies in the identification of methodologies that will stimulate professionals, academics and the general public to participate in processes of sharingf experiences and creation of knowledge in the interface between university teaching, research and extension. The results indicate that SR monitoring of commercial rice and soybean crops, and the presentation of results in the form of a workshop on the property, is a favorable configuration for extension, research and teaching activities between university and company, and motivating covenants between them.