Blog

DG12 & DG6 EU – 5 Novelties not to miss at IPM horticulture trade show

“Hortidaily” covered the launch of the new DG12 & DG6 EU units during the IPM show in Essen, Germany. “DryGair will launch new dehumidifier units under the names DG6 EU and DG12 EU on the IPM. These are compliant with the European refrigerant gas used in the machines. “We used to use gas that was[..]

8 Ways to Reduce Greenhouse Heat Loss

One of the biggest energy expenses, for many greenhouses, is heating. This rings especially true during cold nights or during the winter. When the temperature drops, heating becomes critically necessary, often working non-stop. There are many ways to cut back on energy consumption, but one of the simplest ways is to reduce the need for[..]

What are the Optimal Humidity and Temperature Set Points for Greenhouse Growing?

Relative humidity levels of around 80% and Temperatures range of 18ºC – 24ºC (night – day, 64ºF – 75ºF) Relative humidity in horticulture – Why ~80% RH? Relative humidity is a critical climate parameter in the cultivation of any crop. Growers aim to maintain optimal humidity ranges, corresponding with the plants grown. The optimal relative[..]

How Plants Affect Greenhouse Humidity Control

Humidity control in agriculture is unlike any other industrial setting. This is due to the relationship between the air and the plants, as well as the differing conditions throughout the day and over different seasons. Humidity control in greenhouses and indoor growing facilities is a necessity. Untreated humidity, in such settings, leads to major problems[..]

Using Humidity Control & Monitoring as Growing Tools

DryGair wrote about using humidity control & monitoring as growing tools for “Maximum Yield” website. The article was originally published on November 5, 2019. “…No matter how unintuitive humidity may be, its effects on crops are dramatic and often detrimental. This has led to the current state of humidity control in agriculture, which is under-informed,[..]

Humidity: The Often-Overlooked Climate Factor That Could Be Hurting Your Plants’ Growth

DryGair wrote about humidity control in greenhouses and growing facilities for “Maximum Yield” website. The article was originally published on July 30, 2019. “Modern cultivation is characterized by a constant drive to improve production. This is achieved, for the most part, by controlling and optimizing the climatic conditions in the growing space in order to[..]

Interview with a Cannabis Grower – Published on Cannabis Business Times

This Advertorial was originally published on Cannabis Business Times February 2019 Dehumidification printed Edition. “I promote the use of DryGair as a focal point in my cultivation environment designs by leveraging its dehumidification, high capacity airflow distribution, and heating & cooling capabilities.” These were the words spoken by E. Spiegel when we asked him about[..]

Preventing Botrytis Without Fungicides

Botrytis, also known as gray mold or bud rot, is an extremely common humidity related disease, found in greenhouses around the world. With over 200 known species, this fungal pathogen affects most fruits and vegetables, as well as ornamentals and cannabis. Botrytis’ Effects and Symptoms Gray mold is initiated when the botrytis cinerea fungus infiltrates[..]

Air Circulation – Greenhouse Climate Control

Growing facility climates are constantly monitored, regulated and adjusted. These operations happen in large spaces, meaning large volumes of air, so how is everything optimized everywhere all at once? The answer is air circulation. Between fans, HVACs, vents, windows and other climate control systems, air moves. In most cases the direction of this movement is[..]

Preventing & Treating Powdery Mildew Without Fungicides

Powdery mildew is a humidity related fungal disease caused by a range of fungi species. It is an extremely common mold, found around the world. It mainly affects solanaceous crops, such as tomatoes and peppers, as well as cucurbits, including cucumbers and melons. Powdery mildew is also a common problem in cannabis cultivation. Powdery Mildew’s[..]

What is Leaf Area Index?

Leaf area index, or LAI, is used to measure the amount of foliage in canopies. It is determined by the coverage of leaves per unit of ground surface. Or in simpler terms, LAI measures how many layers of leaves are found in a m2 of surface. What does leaf area index tell us? Leaf area[..]

How DryGair Dehumidifiers Are Changing The Cannabis Industry

“We spoke with DryGair’s Hadar Fuchs-Rubal to learn more about the company’s equipment, origin story, and mission to eliminate Botrytis and other contagions from growing areas, as well as the changing legal status of cannabis in Israel. “ Read the full interview By Dave Kaplan – click here. Published on www.wecannect.com

What is Integrated Pest Management?

Integrated Pest Management (IPM) is an ecosystem-based approach to pest and disease control in modern agriculture. Focused on long-term management, IPM combines different techniques in order to effectively control pest related damage, while minimizing financial, environmental and human health costs. Rather than using pesticides to eliminate pests when they’re found, IPM aims to reduce their[..]

What is VPD (Vapor Pressure Deficit)?

VPD is one of several methods growers use to measure humidity in a greenhouse and gauge its impact on plant development. Vapor pressure deficit measures the difference, in terms of pressure, between the air’s water content, and its saturation point – the maximum amount the air can carry at its current temperature. The point of[..]

7 Principles for “Plant Empowerment” – Next Generation Growing

Next Generation Growing (NGG) is a set of environmental control techniques for greenhouse or glasshouse cultivation, developed in the Netherlands over the past decade. NGG aims to achieve two goals. The first is to improve plant growth by improving conditions for photosynthesis and enhancing plant health. The second is to minimize the cost of growing,[..]

Understanding the Interplay Between Radiation & Humidity

Humidity is a common issue in agriculture, whether in an indoor growing facility or greenhouse. As any parameter in such an environment, it affects, and is affected by numerous factors. In this article we will discuss an often-overlooked piece of the puzzle – how humidity is affected by radiation. Relative Humidity & Transpiration In order[..]

Greenhouse Dehumidification Growing – TIPS from Our Experts

We interviewed our talented experts about what they know best – Agriculture and dehumidification. For years they have been teaching and advocating for smarter, more efficient agriculture in greenhouses. With the DryGair solution they have brought their vision to life. A vision for controlling humidity in a way that both saves tremendous amounts of expensive[..]

“Dehumidification is key in cannabis cultivation”

This Interview was originally published on MMJDaily and was conducted by MMJDaily’s staff. Original publication date: 5/2/2019 “Dehumidification is key in cannabis cultivation” A great number of medical cannabis operations are carried out within greenhouses or indoor environments. Unlike outdoor grows, these types of operations come with whole different sets of issues that require to be[..]

What to Look for in a Greenhouse Dehumidifier

Whether growing in a closed greenhouse, semi-closed greenhouse, or completely indoors, dehumidification is a primary method to increase efficiency, reduce costs and boost the yield and quality of your crop. In order to simplify the sometimes-daunting task of purchasing new equipment, we put together a checklist of the top factors to consider when shopping for[..]

Controlling Water & Climate Conditions – Hydroponic Agriculture Series Part 3

Hydroponic farms can be extremely efficient, but also easily disrupted. The key to a successful hydro operation is in maintaining the correct conditions of both water and air, while keeping a close eye on changes and fluctuations. If you’re new to hydroponic farming, check out our introduction and pros and cons articles. In this installment[..]

Hemp – Uses, Cultivation and Drying

Hemp refers to strains of cannabis sativa with very low levels of THC, usually under 0.3%, too low for recreational use. Regardless of the lack of THC, it is often considered a super-crop, with an especially wide range of uses. As a crop undergoing a cultural shift, especially with a comeback from illegality in the[..]

Homogeneous & Consistent Climate Control with DryGair Dehumidification

The concept is simple and accommodating to Cannabis’ strict requirement DryGair contributed an article for the Cannabis 2020 magazine. It was first published here Bud rot, powdery mildew and Alternaria are some of the most dreaded words in cannabis cultivation. Destructive diseases caused by even brief periods of high relative humidity, which in a greenhouse[..]

Desert Agriculture at Arava R&D

The Arava region is part of the Israeli desert, and home to the “Central & Northern Arava-Tamar R&D Center”, a world leading agricultural research facility. Once a year the center opens its gates to visitors, so DryGair headed to the desert to witness new developments in dry-land agricultural. Arava Agriculture R&D The Arava R&D center[..]

DryGair units now available on frames above the crop

The full article is published on: FloralDaily “Moisture problems in the greenhouse have always existed, but certainly in winter it is a challenge for many growers to dehumidify their greenhouse air. Previously the motto was: heating, open screen and the ventilation windows open. But that is not very energy efficient, and a lot of valuable[..]

Why Humidity Control is Necessary in Cannabis Cultivation

Written by Rom Meir Originally published on HortiDaily – https://bit.ly/2S831xl Cannabis in the modern era is grown in completely controlled spaces, constantly monitored and adjusted, in order to maintain a consistent quality of product, while attempting to maximize yields. This highly technologized world of cannabis cultivation emerged from the underground indoor growing operations of the pre-legal[..]

California’s Legal Recreational Marijuana Market – 2018 Recap

California’s Legal Recreational Marijuana Market – 2018 Recap The first year of legal recreational weed in California has come to a close. It’s time to breakdown trends and see what the future holds. Breakdown Recreational marijuana, or “adult-use” cannabis, as it has been coined by the industry, has become legal in the state of California[..]

DryGair Wins an Innovation and Sustainability Prize – TSW 2019, Poland.

DryGair & Royal Brinkman win Prof. Pieniazek’s Prize at TSW 2019 Poland’s TSW is the biggest Fruit and Vegetable Industry Fair in Central and Eastern Europe, providing the most innovative and current knowledge and know-how in horticulture. As part of the annual conference, the Prof. Pieniazek Prize is awarded to the most innovative and beneficial[..]

Advantages & Disadvantages – Hydroponic Agriculture Series Part 2

Hydroponic farming techniques may vary, as we covered in our previous article – How it Works – Introduction to Hydroponics Agriculture Series – Part 1, but the basic underlying principles stay the same. Growing without soil brings with it many advantages, but not without obstacles to be crossed, and costs to bear. In this article[..]

Greenhouse Heating, Coal & Dehumidification – A Breakdown

Heating a greenhouse is one of the most basic aspects of modern agriculture, yet the methods in which this heat is produced may seem a bit antiquated, even in countries considered to be at the forefront of both technology and environmental awareness. This article was featured on www.hortidaily.com Greenhouse Heating Modern agriculture enables year-round growing[..]

How it Works – Introduction to Hydroponic Agriculture Series Part 1

Hydroponic agriculture, as the name suggests, is the method of growing plants in water, instead of soil. This is part of an entire new generation in farming, and the focus of a new series of articles we will be writing to cover this field (or lack thereof). We will review different aspects from its history[..]

Harvest Podcast by Growers Network – Sponsored by DryGair

1. Episode: Dehumidification – It’s all about the Dew Point: This episode is about a major factor in preventing Botrytis and other bummers to your Cannabis crop: the dew point. The dew point is when the air can’t hold water any more and condensation occurs. If condensation occurs on your plants leaves and flowers, it’s[..]

6 Tips to Increase Greenhouse Energy Efficiency

Greenhouse agriculture is a big energy consumer, especially when it comes to growing in harsher climates. Heating, lighting and ventilating will always be needed, but there are ways to reduce their footprint and increase energy efficiency. Insulation Greenhouse air is constantly modified, meaning energy is poured into it, to keep conditions optimal. So, it’s only[..]

Why Air Circulation is a Key Factor

Whether growing in a greenhouse or a warehouse, the right air conditions are essential Plants are living organisms and just like humans, they like to feel at home. Whether it be warm or cold, dry or humid, crops have desired conditions, based on their origin. Supplying crops with what they need is the key to[..]

Humidity – It’s All About the Dew Point

Humidity is a critical factor in cannabis cultivation, one that is much discussed but also often misunderstood. It’s about time we set the facts straight. We want to help you keep your buds dry and healthy, so this may be a bit long winded. Take a deep breath, but don’t sweat. WHAT IS HUMIDITY? Air[..]

Humidity Woes – Common Greenhouse Humidity Related Problems

Think you have it bad with all the humidity? Plants have it worse. High humidity leads to the infection and development of plant diseases by a variety of fungi and bacteria species. This puts crops at risk of yield loss and diminished quality. It also demands higher energy consumption to battle, at a high economic[..]

Blight – Lessons for The Future of Pest Management

Recent outbreaks of late blight spark discussion of crop disease management worldwide – DryGair offers the unique solution to control and prevent the conditions that lead to this outbreak. Phytophthora infestans is a microorganism commonly known for causing late blight, a disease notorious for decimating tomato and potato crops. Infamous for prompting massive famines in[..]

3 Reasons Your Greenhouse Needs a Thermal Screen

Have you been using a thermal screen in your greenhouse? You really should… We’re big fans of efficiency here at DryGair. We’ve noticed that many greenhouse growers have yet to hop on the thermal screen train. So, we’ve compiled a simple list to sum up the reasons we consider thermal screens to be a must-have.[..]

Plant Diseases and Greenhouses: The Perfect Storm or the Ultimate Cure-All?

A pathogen, a host, and the right environment: these are the ingredients needed to spark plant disease. A simple recipe, which can have some very complicated results for a grower: infamous diseases including botrytis (gray mold), powdery mildew, late blight, and downy mildew are known to decimate crops as well profitability. This threesome is known[..]

Innovation in Agriculture

MThomas Robert Malthus said: “The power of population is indefinitely greater than the power in the earth to produce subsistence for man”. According to Malthus theory, the human population increasing faster than the food productivity- eventually, humans will suffer from starvation. Malthus lived between the years 1766-1834, we are more than 200 years later and[..]

Reducing Humidity in greenhouses

Growing in a greenhouse presents the grower with the complicated challenge of growing under a cover while controlling the climate inside, especially reducing humidity. Humidity inside the greenhouse is caused by the transpiration process of the plants. Standing water on crops would create humidity diseases such as downy mildew, botrytis, Alternaria, Erwinia, Phytophora or Clavibacter[..]

Greenhouse energy efficiency

We build greenhouses trying to control nature and creating optimal growing conditions. But playing “Mother Nature” can be very expensive, the energy required for the daily operation of a greenhouse: lights which provide additional radiation, additional CO2, controlling the climate- temperature and humidity, creating air circulation to improve the climate and uniformity inside the greenhouse,[..]

Botrytis in Cannabis

Botrytis, also known as gray mold or bud rot, is the most common disease caused by humidity. It affects various crops such as tomatoes, cucumbers, peppers, basil and roses, as well as cannabis. Preventing Botrytis Botrytis is a fungal disease that thrives in high levels of humidity. The best method to combat this mold is[..]

The Cannabis Growing Problems

Cannabis/ Hamp/ Marijuana was part of people’s lives for centuries. The plant was used to produce fabrics, food, drugs, medicine, and in some rituals etc. We know that different cultures, countries, and religions used to grow and use this plant. The question is, What problems the grower faces when growing cannabis? Why does he have[..]

Dehumidifier for cannabis

Mildew and Botrytis are only two of the humidity diseases that can harm the cannabis plant. Because cannabis is very sensitive to high humidity it is not surprising that growers seek a solution. The solution for humidity diseases is controlling the humidity, thus using dehumidifiers. If you ask yourself why we mention only dehumidifiers and[..]

The development of agriculture in the world

from the agricultural revolution to current days? The main role of the agriculture sector is to produce and provide food to people. Throughout the years, this field went through many changes deriving from cultural and social growth, development of settlements and transportation, the increase of trade and handicrafts, and the development of the technology field.[..]

Marijuana growing in California

4 years ago, a critical decision was made at California State, USA. The decision to cancel the criminal sanctions for using marijuana had a rapid influence, a decrease in crime rates. All of those who claimed that the legalization would cause an increase of use among teenagers was wrong. After approving the growing of marijuana[..]

The carbon footprint of indoor cannabis cultivation

The Cannabis industry has two main cultivation methods. The first one is the indoor method – growing cannabis plants in a completely closed structure, fully isolated from the environment. This way the sunlight does not reach the plant so there is massive use of energy for lightning. The second method is the outdoor method. This[..]

Marijuana cultivation in Australia

On March 2016, the government of Australia decided to approve a law which allows the use of marijuana for medicinal purposes. The law allows the sale of medicinal marijuana subject to a doctor’s recommendation. As in many countries around the world, the government of Australia decided to approve a law which allows the use of medical[..]

Cannabis and humidity

These days, many people acknowledge the positive effect the use of Medical Cannabis has, easing the suffering and pains of terminally ill and chronic patients. Governments wishing to reflect people’s positive view on the use of medical cannabis promote cannabis legalization and subsequently grant more licenses to growers of Medical Cannabis. The demand for Medical[..]

Growing during the Cold Season

We frequently hear from growers that during the winter time diseases appear on their crops. The question is why? The relative humidity (RH) is the ratio of the amount of water in the air relative to the amount of water the air can contain at a given temperature. The dew point is the temperature at[..]

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