MANUAL/FAQ

STATIONS

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Data and Forecasts

Based on the Weather Underground ™ API, forecasts are generated from forecasting system that takes advantage of a large amount of weather data from the community.

The constantly expanding network with more than 250,000 personal weather stations is the largest of its kind and provides a unique ability to provide local forecasts based on real weather data. Uses the most innovative forecast models available and cross-checks its output with all localized data points.

Calculation of ETo using the FAO method.

Historical average data

14,000 agro-climatic stations are used around the world, based on the NOAA, BOM Australia, SIAR, AEMET, EUSKALMET, RURALCAT

TMY

Typical Meteorological Year, TMY (Hall et al., 1978): 365 selected days of individual years for forming a full year. It represents the typical, representative or reference conditions of a long series of years. 4 analyzed parameters: Tmax, Tmin, Irrigation and ETo. Calculations of FS (Finkelstein-Schafer) and WS statistics (weighted sums). Percentile persistence criteria.

GDD

The day degrees of the downloaded data are calculated using the double triangle method of the current year.

The GDD forecasts are performed using the TMY data of the selected station.


PARCELS

 


Group: The selection of the type of plant is started.
Plot Area. Percentage of shaded area as coverage or occupancy density.
Type of irrigation: Aspersion, Drip.
Losses: Or lack of uniformity of the installation. It is the water that does not reach the plant.
Flow per plant: Number of drippers per unit flow rate.
Precipitation Ratio: In Sprinkler is a feature of the sprinkler.
Emitter flow and emitters / m2: In some areas, it can be deduced from the density of plantation, plants / m2 and emitters / plant.
Kv: Coefficients of vegetation, can be edited.
You can add, delete or include photos as well as share them on your networks.


PESTS

   

For plants or others, pests and diseases or other treatments can be selected and obtain the corresponding formulations and their authorized products.
Dose and safety date information is obtained. As well as your Phytosanitary Register.
Non-chemical intervention alternatives:
In some plants the information of the Biological Control Agents is obtained and the secondary effect of the treatment to the beneficial fauna.
Database of MAPAMA, IVIA, UCA and EPPO.
You can add, delete or include your photos of pests or beneficial wildlife, as well as share them on their networks.
Each zone or plot may have several phytosanitary records and may relate to companies, personnel, equipment and documents.

ANALYSIS

   


Each plant, zone or plot can be related to several analysis records and these can be related to companies, personnel and documents.
Vegetable
Active substances detected and foliar analysis.
Water
Active substances detected and water analysis.
Floor
Active substances detected and soil texture.
NPK
Formulation of fertilization according to plot data, plants. The adjustment is made according to the water needs.



WATER

   

Weekly
Maximum irrigation time: Allows to limit the duration of each irrigation. The application takes into account the soil type and root depth because there are no leaks. Maximum number of irrigations, seven.
Rain Sensor: Selected, the watering time is longer, not taking into account the rain.
The rainfall is from the previous week and if it has not been watered by rain, it should not be taken into account in the balance of this week. It takes into account the maximum rainfall that can be exploited by events.
Irrigation table: Plots or zones, number of irrigations, time of each irrigation, volume of water to the plot, flow of irrigation.
You can use both the observed and forecast data, depending on the choice of weather data.
Irrigation calendar
It allows to choose the days of irrigation and the schedule, taking into account the restrictions of number of irrigations and calculated durations.
Needs
Calculate the monthly irrigation needs according to historical average data or TMY average data, if applicable.
Historical
Histories of irrigations calculated and realized.



FAQ


What is LandsWater?
He is a field manager, with functions of field notebook, fertirrigation and plant health, having the bases to share data and experiences.
It is an application of irrigation of parks and urban gardens, being an evolution document of Wucols.
The landscape coefficient is calculated from the needs of the type of plants, adapting to the area by a stress factor, seed density and microclimate. The evaporation of the soil is considered as a lower limit.
A weekly balance is calculated to replenish the water in a period of one week, through the evapotranspiration of the ETl landscape, the effective precipitation usable and the events.
Prepares an annual calendar of irrigation water considering the water easily assimilable per plant and soil. Giving rise to a number of irrigations, amount and time of irrigation to distribute the current week.

How to start?
If it is located, the program will search the nearest stations, updating ETo data, rainfall and events of the last seven days. If a station has no data it will provide the historical average data of the ETo, and the rest must be entered. You can also use another station or enter the data manually.
The data of 250,000 stations and the back up of 14,000 stations with historical average data are used.

What data do you need to irrigate according to ETo?
We chose the type of plant, obtaining the corresponding species.
The landscape will be divided into hydrozones with a criterion of uniformity of both type of irrigation and needs.
You can then edit the coefficients of vegetation and stress, you enter the shaded area as a coverage indicator, the irrigation facility and the non-uniformity losses. In the case of drip irrigation, the number of emitters for the surface, as well as the flow per emitter.
Sprinkler irrigation requires a precipitation ratio, which is measured in mm or ft of water falling on the floor of a sprinkler system.
Coefficients of uniformity, runoff losses, etc. Should be included as losses.

What kind of irrigation does it apply to?
Sprinkling, micro sprinkling and drip irrigation. In all cases it gives us the number of irrigations for seven days and the amount of water and the time of each irrigation.
What are estimated losses?
It is the percentage of water that does not reach the plant, due to losses in the installation and / or lack of uniformity in irrigation. A good drip installation will have losses of less than 15%. In spraying the losses due to lack of uniformity in the distribution can be 30%.

How can LandsWater adapt to drought restrictions?
In lawns three levels of irrigation are used: optimal, deficit and survival according to drought, the first is unrestricted, the second maintains the lawn with less growth and poorer appearance and the latter serves to recover the lawn after passing the restriction.

Can it work without agroclimatic or weather station data?
Yes, in this case ETo, rain and event data must be entered manually. The data can come from the media database published by official bodies or their own means.
A rain event is the days with rain greater than 0.2 x ETo, followed by rainy days are counted as a rain event.

How are rainfall data used?
Taking into account The Easily Assimilable Water, which is a function of soil type, type of irrigation and depth of roots, which varies with the plant and its stage of growth.

When to use LandsWater and when to water?
It should be used every week and if possible on a fixed day, for example on Mondays. The result of the amount of water, the number of irrigations and, if applicable, the time, can be distributed over the following seven days. It is a matter of making weekly balances of entries and exits, for that reason the regularity in the calculation agrees.

How to get the most water saving LandsWater?
At the design stage, LandsWater helps you choose plants with few needs, you can choose the most appropriate type of irrigation areas and plan with uniformity criteria.
LandsWater will allow you to choose a little complicated watering controller because the computational load will be on your smartphone or tablet.
Measuring soil moisture as an indicator of changes in the reserve, in representative areas, and at different depths depending on the roots, will help to adjust operating hours and stress relationships.
Irrigation is to cope with the lack of rain and avoid water stress, making water available to plants where it is easily assimilated, avoiding excessive losses due to irrigation and percolation and limiting the evaporation of the soil outside the influence of plants .

What makes 1 mm of water?
The water column mm equals l / m2 or 10 m3 / Ha.
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