Irrigation

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📄 Automating irrigation with the Arduino controller

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Submitted by Elsewhere on 2020-Nov-10 Tue 12:27
2092

A research trial was conducted in the greenhouse of the Community of Mollepata in Ayacucho, Peru. The objective of the work was to develop an automated irrigation system with an Arduino control board in order to grow hydroponic crops. The system uses an Arduino ATmega328P board to connect different…

📺 "Self-watering soil could transform farming"

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Submitted by Elsewhere on 2020-Nov-06 Fri 11:03
2065

500Foods shared this story from HD.com. A new type of soil created by engineers at The University of Texas at Austin can pull water from the air and distribute it to plants, potentially expanding the map of farmable land around the globe to previously inhospitable places and reducing water use in agriculture at a time of growing droughts. As published…

📄 Combined Effects of Induced Water Deficit and Foliar Application of Silicon on the Gas Exchange of Tomatoes for Processing

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Submitted by Elsewhere on 2020-Nov-05 Thu 09:58
2049

The beneficial effects of silicon (Si) on plants have been widely reported for its fruit qualitative improvements, growth gains, and protection against abiotic and biotic stresses. This study aimed to evaluate the combined effect of soil water potential (Ψs) (−30 and −60 kPa) and the foliar application of Si (0.0 (control), 1.0, 2.0, 3.0, and 4.0 g L−1) in the development of tomatoes grown in a greenhouse. We evaluated the biometric parameters and gas exchange in three periods (20, 34, and 48 days after planting). The rates of transpiration (E), stomatal conductance (gs), and net photosynthesis assimilation (An) were lower when the plants were subjected to water deficit. The foliar application of Si attenuated the effect of the water deficit in both levels applied to the crop. A high response was observed at −60 kPa, regardless of the evaluated period. However, a significant effect was not observed on the relative chlorophyll index and biomass accumulation when Si was applied. A foliar application up to 2.8 g L−1 promotes increases in An,gs, and E. It is highlighted that Si can promote improvements in gas exchange when plants are affected by a water deficit.

Australia: Recycled water proves fruitful for greenhouse tomatoes

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Submitted by Elsewhere on 2020-Oct-30 Fri 13:13
1988

In the driest state in the driest continent in the world, South Australian farmers are acutely aware of the impact of water shortages and drought. So, when it comes to irrigation, knowing which method works best is vital for sustainable crop development. Now, new research from the University of South…

Effects of Drip Irrigation Emitter Density with Various Irrigation Levels on Physiological Parameters, Root, Yield, and Quality of Cherry Tomato

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Submitted by Elsewhere on 2020-Oct-30 Fri 12:48
1996

Root morphology and its components’ behavior could show a considerable response under multiple water application points per plant to help the ultimate effect of fruit yield and fruit quality. In this study, a comparison of a single emitter per plant was made with two, three, and four emitters per plant under drip irrigation and two irrigation levels (full irrigation 100% and deficit irrigation 75% of crop evapotranspiration) to investigate their effects on physiological parameters, root, yield, and their associated components for potted cherry tomato under greenhouse conditions in Jiangsu-China. The experimental results showed that the plants cultivated in the spring-summer planting season showed significantly higher results than the fall-winter planting season due to low temperatures in the fall-winter planting season. However, the response root length, root average diameter, root dry mass, leaf area index, photosynthetic rate, transpiration rate, fruit unit fresh weight, the number of fruits, and pH were increased by multiple emitters per plant over a single emitter per plant, but total soluble solids decreased. Besides, a decreasing trend was observed by deficit irrigation for both planting seasons, and vice versa for the case for tomato total soluble solids.

New video on interpreting your irrigation water quality

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Submitted by Elsewhere on 2020-Oct-07 Wed 16:33
1722

A new YouTube video (https://youtu.be/lkSiSmDwIqw) by Dr. Paul Fisher from the University of Florida IFAS Extension describes how to sample, interpret, and solve chemical issues for water used to irrigate greenhouses and nurseries. Dr. Fisher introduces the free online WaterQual tool at cleanwater3.org to interpret your water quality analysis. This video is the first in […]

Using LED grow lights and less irrigation makes stronger plants

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Submitted by Elsewhere on 2020-Sep-30 Wed 15:46
1611

Hort Americas is currently working on a germination and propagation project of leafy greens and culinary herbs. The project is in collaboration with their demonstration greenhouse partners, The State Fair of Texas and the Big Tex Urban Farms. Big Tex Urban farms provide the labor needed to grow […]

Using LED grow lights and less irrigation makes stronger plants

Profile picture for user Elsewhere
Submitted by Elsewhere on 2020-Sep-29 Tue 09:40
1591

Hort Americas is currently working on a germination and propagation project of leafy greens and culinary herbs. The project is in collaboration with their demonstration greenhouse partners, The State Fair of Texas and the Big Tex Urban Farms. Big Tex Urban farms provide the labor needed to grow and…

Create the perfect water balance with automated controls

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Submitted by Elsewhere on 2020-Sep-21 Mon 09:57
1434

During Wageningen University’s Autonomous Greenhouse Challenge team AuTomatoes applied the principles of Plant Empowerment in their winning AI strategy. Thus, the team’s strategy was focused on the plant and its balances, in order to create a balanced and empowered crop. So how did they do this?…

Autonomous peroxide generation system promises crop boost

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Submitted by Elsewhere on 2020-Sep-09 Wed 08:12
1272

A new irrigation water treatment solution provides autonomous peroxide generation for improved crop protection, increased yields, and reduced irrigation system maintenance. 'HPNow’s HPGen A-Series product line is specifically designed for the needs of horticulture growers. This autonomous system…

Partial root-zone drying and deficit irrigation effect on greenhouse grown grafted tomato

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Submitted by Elsewhere on 2020-Sep-04 Fri 08:22
1227

The tomato is an important horticultural crop, the cultivation of which is often under influence of abiotic and biotic stressors. Grafting is a technique used to alleviate these problems. Shortage of water has stimulated the introduction of new irrigation methods: deficit irrigation (DI) and partial…

Automated irrigation techniques

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Submitted by Elsewhere on 2020-Sep-03 Thu 09:28
1216

Jeff Neff, Senior Applications Technician at Argus Controls, discusses  irrigation techniques and automation, including considerations that can be important when deciding which system to choose advantages of automating this process, as well as key considerations for implementing automated irrigation by using irrigation solutions…

First controllable and transportable irrigation water treatment system installed

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Submitted by Elsewhere on 2020-Sep-01 Tue 09:10
1197

Duncan Family Farms, a family-owned, multi-regional grower of over 7,000 acres of certified organic produce, announced the installation of a highly effective, controllable and transportable treatment system for irrigation water. The installation, including 5 systems on organic baby tender leaf crops in…

Irrigation de-mystified: 'Follow the rules of thumb and the plant performs as required'

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Submitted by Elsewhere on 2020-Aug-17 Mon 07:53
1063

In the first article in a mini-series on irrigation in semi-closed glasshouses Godfrey Dol discussed the right tools required to measure irrigation. In this second part he takes a look at the most important rules in irrigation. 1) A healthy, mature tomato plant uses approximately 1.7 ml/Joule/M2. Light…

Irrigation de-mystified: 'growers like to be on the safe side, risking overwatering their crops'

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Submitted by Elsewhere on 2020-Aug-13 Thu 10:07
1033

Plants need water and fertilizer to grow. In the hi-tech glasshouse industry, growers apply both at the same time. A fertilizer injection system provides the fertilizer, and the drip irrigation system distributes the water evenly to the plants. How hard can it be? When Godfrey Dol, he is writing the…

'Everything that can be automated in water, is automated'

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Submitted by Elsewhere on 2020-Jul-07 Tue 13:32
389

Ball valves for irrigation used to be manually operated, but nowadays this is increasingly more automated. Someone who knows all about water technology in the greenhouse, is Hein Braaksma. "Everything which can be automated, is more and more often automated. The water-technical installation in a…

New videos on 1 to 5 moisture scale for container substrates

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Submitted by Elsewhere on 2020-Jul-03 Fri 12:04
368

Communication on when and how much to irrigate is critical in the production of high quality, uniform plants. The University of Florida IFAS Extension has developed short and simple videos in English and Spanish (“The 1 to 5 Moisture Scale for Container Substrates” / “La Escala de Humedad de 1 a 5 para…