# Knowledge that reaches the field. Source page: [https://perinirrigacao.com.br/en/blog/](https://perinirrigacao.com.br/en/blog/) Automatically translated from Portuguese. Our projects, service information and technical references relate to Brazil. Contact us to discuss your location and requirements. [Read the Portuguese original](https://perinirrigacao.com.br/blog/) Irrigation, management and technology. Readings to understand the system and plan the next steps in your area. 25 articles and guides to explore. ## Recent publications Planning6 Nov 2026 (2026-11-06)9 min read ### [Air valves in irrigation: types, where to install them and how to avoid problems with air in the pipes](https://perinirrigacao.com.br/en/blog/valvula-ventosa-irrigacao/) An air valve controls how air enters or leaves irrigation piping. To choose the right type, identify when the problem occurs. An automatic air-release valve releases air that accumulates while the system is under pressure… [Read the article](https://perinirrigacao.com.br/en/blog/valvula-ventosa-irrigacao/) Planning5 Nov 2026 (2026-11-05)9 min read ### [Venturi injector in fertigation: how it works, how to install and how to calibrate](https://perinirrigacao.com.br/en/blog/injetor-venturi-fertirrigacao/) Understand how pressure, installation and suction measurement guide the use of the Venturi injector in fertigation, with reference to the catalog and in the field. [Read the article](https://perinirrigacao.com.br/en/blog/injetor-venturi-fertirrigacao/) Planning4 Nov 2026 (2026-11-04)9 min read ### [Irrigation sprinkler: types, differences and how to choose the right model](https://perinirrigacao.com.br/en/blog/aspersor-para-irrigacao-como-escolher/) Compare types of sprinklers and find out how pressure, nozzle, wind and soil infiltration capacity guide the choice for your field. [Read the article](https://perinirrigacao.com.br/en/blog/aspersor-para-irrigacao-como-escolher/) Planning3 Nov 2026 (2026-11-03)8 min read ### [Automated irrigation on the farm: what to automate, in what order and how to choose the controller](https://perinirrigacao.com.br/en/blog/irrigacao-automatizada-na-fazenda/) Understand how controller, valves, pump and sensors work together in automated irrigation and what to check before automating by sector. [Read the article](https://perinirrigacao.com.br/en/blog/irrigacao-automatizada-na-fazenda/) Planning2 Nov 2026 (2026-11-02)10 min reading ### [Water-use permits for irrigation in Brazil: when they are required and how to apply](https://perinirrigacao.com.br/en/blog/outorga-de-agua-para-irrigacao/) Before installing the catchment, check who authorizes the use of the water and what project data to gather. Understand water-use permitting, insignificant use and requirements of the managing body. [Read the article](https://perinirrigacao.com.br/en/blog/outorga-de-agua-para-irrigacao/) Drip irrigation1 Nov 2026 (2026-11-01)9 min read ### [Drip tape: how to choose thickness, spacing and flow rate for vegetables](https://perinirrigacao.com.br/en/blog/fita-gotejadora-como-escolher/) Before choosing the price per meter, compare walls, spacing and flow. See how soil, bed, pressure and filtration factor into the choice of drip tape. [Read the article](https://perinirrigacao.com.br/en/blog/fita-gotejadora-como-escolher/) CropsOct 31, 2026 (2026-10-31)9 min read ### [Pasture irrigation: 7 mistakes that compromise results and how to avoid them](https://perinirrigacao.com.br/en/blog/irrigacao-de-pastagem-erros/) Water alone does not solve pasture. See how climate, fertilization, grazing and irrigation management factor into the result and what to check before investing. [Read the article](https://perinirrigacao.com.br/en/blog/irrigacao-de-pastagem-erros/) Micro-sprinkler irrigationOct 30, 2026 (2026-10-30)9 min read ### [Microsprinkler irrigation: how it works and when to choose it over drip](https://perinirrigacao.com.br/en/blog/irrigacao-por-microaspersao/) Compare microsprinkler and drip by wet area, soil, wind and orchard operation. See what data to collect before choosing the system. [Read the article](https://perinirrigacao.com.br/en/blog/irrigacao-por-microaspersao/) PlanningOct 29, 2026 (2026-10-29)11 min read ### [Solar pump for irrigation: when it makes sense and how to evaluate the project](https://perinirrigacao.com.br/en/blog/bomba-solar-para-irrigacao/) Solar pumping needs to combine daily volume, head and available energy. See what to check in the project, in the reservoir and in the comparison of alternatives. [Read the article](https://perinirrigacao.com.br/en/blog/bomba-solar-para-irrigacao/) PlanningOct 28, 2026 (2026-10-28)9 min read ### [Irrigation pump: how to choose according to flow rate, head and pump curve](https://perinirrigacao.com.br/en/blog/bomba-para-irrigacao-como-escolher/) Power in hp is not enough to choose a pump. Understand which project data allows you to compare equipment and evaluate suction and energy consumption. [Read the article](https://perinirrigacao.com.br/en/blog/bomba-para-irrigacao-como-escolher/) PlanningOct 28, 2026 (2026-10-28)9 min read ### [Evapotranspiration in irrigation: how to use ETo and Kc to estimate how much to irrigate](https://perinirrigacao.com.br/en/blog/evapotranspiracao-na-irrigacao/) Evapotranspiration helps to estimate crop consumption. See how to use ETo, Kc, rain and soil water to assess how much and when to irrigate. [Read the article](https://perinirrigacao.com.br/en/blog/evapotranspiracao-na-irrigacao/) PlanningOct 28, 2026 (2026-10-28)9 min read ### [Irrigation during the rainy season: maintenance checklist for the system to be ready for drought](https://perinirrigacao.com.br/en/blog/manutencao-irrigacao-periodo-chuvoso/) If rain has reduced operations, take the opportunity to review the system. See what to check on filters, lines, emitters and motor pumps before restarting. [Read the article](https://perinirrigacao.com.br/en/blog/manutencao-irrigacao-periodo-chuvoso/) Drip irrigationOct 25, 2026 (2026-10-25)8 min read ### [Cleaning drippers: chlorine or acid? How to choose the right treatment](https://perinirrigacao.com.br/en/blog/limpeza-de-gotejadores-cloro-ou-acido/) Chlorine and acid have different functions. See what to investigate in the case of obstruction and what precautions guide the choice of treatment and maintenance of the drip. [Read the article](https://perinirrigacao.com.br/en/blog/limpeza-de-gotejadores-cloro-ou-acido/) Drip irrigationOct 24, 2026 (2026-10-24)9 min read ### [Iron in irrigation water: how to identify and treat it before it clogs the drip](https://perinirrigacao.com.br/en/blog/ferro-na-agua-de-irrigacao/) Water that comes out clear from the well can form iron deposits in the network. See the signs, what to ask for in the analysis and how the project combines treatment, filtration and maintenance. [Read the article](https://perinirrigacao.com.br/en/blog/ferro-na-agua-de-irrigacao/) PlanningOct 23, 2026 (2026-10-23)9 min read ### [Water analysis for irrigation: how to collect the sample and what to ask the laboratory](https://perinirrigacao.com.br/en/blog/analise-de-agua-para-irrigacao/) Irrigation water analysis only helps decide filtering, treatment and management when the sample represents the water that actually enters the system… [Read the article](https://perinirrigacao.com.br/en/blog/analise-de-agua-para-irrigacao/) PlanningOct 23, 2026 (2026-10-23)9 min read ### [Fertigation: 8 mistakes that compromise the application of fertilizers through irrigation water](https://perinirrigacao.com.br/en/blog/fertirrigacao-erros-frequentes/) Fertigation allows nutrients to be delivered to the root zone at the dose and at the time the plant needs, but it only works well when the irrigation system, the chemistry of the solution and the operating routine are in order… [Read the article](https://perinirrigacao.com.br/en/blog/fertirrigacao-erros-frequentes/) Drip irrigationOct 23, 2026 (2026-10-23)9 min read ### [Drip uniformity test: how to measure emitter flow and calculate CUD in the field](https://perinirrigacao.com.br/en/blog/teste-de-uniformidade-gotejamento/) Similar flow rates help to distribute water evenly, but the depth applied also depends on the actual flow rate and irrigation time… [Read the article](https://perinirrigacao.com.br/en/blog/teste-de-uniformidade-gotejamento/) Drip irrigationOct 20, 2026 (2026-10-20)9 min read ### [Pressure-compensating dripper: how it works and when it makes a difference in the project](https://perinirrigacao.com.br/en/blog/gotejador-autocompensante/) The pressure-compensating dripper regulates the flow within a pressure range. See when to consider this emitter and why to evaluate the anti-drain function in pulse management. [Read the article](https://perinirrigacao.com.br/en/blog/gotejador-autocompensante/) Illustrative image generated by artificial intelligence. PlanningOct 20, 2026 (2026-10-20)10 min reading ### [Tensiometer or soil moisture sensor: which one to use to decide when to irrigate](https://perinirrigacao.com.br/en/blog/tensiometro-ou-sensor-de-umidade-do-solo/) The tensiometer measures the strength with which the soil retains water; electronic sensors estimate how much water is in the soil and generally require local calibration… [Read the article](https://perinirrigacao.com.br/en/blog/tensiometro-ou-sensor-de-umidade-do-solo/) Illustrative image generated by artificial intelligence. Drip irrigationOct 16, 2026 (2026-10-16)10 min reading ### [Clogging of drippers: 7 mistakes that cause the problem and how to avoid them](https://perinirrigacao.com.br/en/blog/entupimento-de-gotejadores/) Clogging of drippers rarely has just one cause. Particles, chemical precipitates (iron, calcium, manganese) and biological slime usually act together, and the filter only solves part of the problem… [Read the article](https://perinirrigacao.com.br/en/blog/entupimento-de-gotejadores/) CropsOct 16, 2026 (2026-10-16)10 min reading ### [Coffee irrigation during flowering: how to manage water before, during and after flower opening](https://perinirrigacao.com.br/en/blog/irrigacao-do-cafe-na-florada/) In irrigated coffee, flowering can be influenced by water management: a dry period helps the flower buds to mature together, and the resumption of irrigation (or rain) triggers the opening of the flowers… [Read the article](https://perinirrigacao.com.br/en/blog/irrigacao-do-cafe-na-florada/) ## Essential Guides Start with the decisions that structure an irrigation project. PlanningReviewed in 4 Nov 2026 (2026-11-04)4 min read ### [Types of irrigation](https://perinirrigacao.com.br/en/conteudos/tipos-de-irrigacao/) Understand the differences between sprinkler, drip, micro-sprinkler and surface irrigation. See selection criteria and the role of automation in the system. [Read the guide](https://perinirrigacao.com.br/en/conteudos/tipos-de-irrigacao/) PlanningReviewed in Oct 16, 2026 (2026-10-16)3 min read ### [How much does drip irrigation cost](https://perinirrigacao.com.br/en/conteudos/quanto-custa-irrigacao-por-gotejamento/) Understand what changes the cost of drip irrigation and how to compare a budget per hectare: area, planting, water, pumping, installation and operation. [Read the guide](https://perinirrigacao.com.br/en/conteudos/quanto-custa-irrigacao-por-gotejamento/) MaintenanceReviewed in Oct 16, 2026 (2026-10-16)4 min read ### [Irrigation Filters](https://perinirrigacao.com.br/en/conteudos/filtros-de-irrigacao/) Find out what to evaluate in irrigation filters: water quality, flow, screen, discs, sand, pressure loss and cleaning routine. Guide with technical sources. [Read the guide](https://perinirrigacao.com.br/en/conteudos/filtros-de-irrigacao/) Irrigation systemsReviewed in 4 Nov 2026 (2026-11-04)4 min read ### [Localized irrigation: advantages and disadvantages](https://perinirrigacao.com.br/en/conteudos/irrigacao-localizada-vantagens-desvantagens/) Compare the possibilities and limitations of localized irrigation: wet region, filtration, management, maintenance and costs. Understand what to evaluate in the project. [Read the guide](https://perinirrigacao.com.br/en/conteudos/irrigacao-localizada-vantagens-desvantagens/) ## From knowledge to your project. In agricultural production or green areas, the project starts with the conditions of your area and the water supply. Tell Perin what you need to irrigate. [Request quote](https://perinirrigacao.com.br/en/#contato)[Chat on WhatsApp](https://wa.me/5514998245219?text=Hello%21+I+want+to+talk+about+an+irrigation+project.)