About HaifaStream: Greenhouse Plant Nutrition by Haifa Group
Protected cropping systems are highly effective means producing more with less, yet true effectiveness must be backed up by true professionality.
Haifa Groups' modern greenhouse experts are here to share their knowledge, tips, and key need to knows achieving best nutritional program for your crop.
HaifaStream: 2 tanks fertilizer stock solution - the nutritional base for your crop - Episode 2
Creating concentrated fetilizer solutins can be tricky sometimes. Water temperature, pH and total concentration are the 3 main aspects. Which tank should the chelates be added into? which pH to target? what is the right way to use polyphosphate ?
Join Haifa Group’s greenhouse experts Marco Molenaar & Filippo Correddu to learn more about prepration of 100% soluble fertilizer stock solutions.
2 Feb 2026
HaifaStream: Shifting to water recirculated irrigation systems carries potential benefits - what are the risks and necessities to make the change.
Water recirculated systems requires equipment, quality water and knowledge. pH buffering, sodium management, fertilizer purity, drainage treatments, rebalancing nutrients and chelates and a lot more.
Join Haifa Group’s greenhouse experts Marco Molenaar & Guy De Villartay to learn more and gain important basics and tips.
2 Feb 2026
HaifaStream: Lab analysis is often recognized as unnecessary expanse - is it really needed ?
Lab analysis… soil, water, leaves or other, are often perceived as time consuming and unnecessary expanse. Are they really needed or is a portable meter good enough ? We defiantly believe so !
Getting the right analysis in the right time can save your crop, save money and guide you to better results.
Join Haifa Group’s experts Ronald Valke, Filippo Correddu and Guy De Villartay to learn more from their personal experience
2 Feb 2026
HaifaStream: Grafted vines in greenhouses – a growing trend
From a short dip to history to modern cultivation & fertilization practices of grape vines and future thoughts ever increasing efficiency.
Join Haifa Group’s experts Filippo Correddu and Ronald Valke to learn more about the history, present and future of grape vine cultivation
2 Feb 2026
HaifaStream: Ions Antagonism and Synergism – because shortages do not necessarily mean being short
Managing the right BALANCE between cation and anions is the key for adequate fertigation.
Nutritional deficiencies are very common and will always lead to loss of yield, but how can you correct or even prevent it ?
Providing more nutrients is NOT necessarily the right answer !
Join Haifa Group’s experts Marco Molenaar & Filippo Correddu to learn more about deficiency management, ion mobility, ion relationships and how to BALANCE it right
20 Nov 2025
HaifaStream: Managing water contents in your substrate – how and why
Substrate water content is critical to provide the right balance of water and air to the root zone. Too little or to high content will immediately impact plant performance and development translated to yield loss. Join Haifa Group’s greenhouse experts Ronald Valke and Filippo Correddu to learn more about the right way to measure, calculate and manage substrate water content.
21 Oct 2025
HaifaStream: pH Control in soilless cultivation – a crucial factor for nutritional efficiency. Manage it the right way !
pH of aqueous solutions in agricultural systems may be affected by multiple factors and requires careful management to improve success.
Proper management should include the full cycle of water in your greenhouse – from concentrated fertilizer solution to the mixing tank, dripper, substrate, plant roots, drain, disinfection systems and back again.
Join Haifa Group’s greenhouse experts Marco Molenaar & Guy De Villartay to learn more and gain simple tips for a complexed challenge.
6 Jul 2023
HaifaStream: Clogged drippers - more common than you think. Yes, there's an easy solution.
Over time drippers tend to clog and block, resulting in an unequal supply of water and nutrients to your plants. Haifa Group's experts Tal Shani and Ronald Valke are here to share a very simple solution. "Check it by yourself".
6 Jul 2023
HaifaStream: When roots uptake is not enough - Foliar application.
Roots are ideal for nutriant and water uptake, yet in some cases even the roots can use a little foliar support. How and when should we support them? Haifa Group's experts Guy De Villartay and Yishai Wachsmann are here to talk about the advantages and best application of foliar nutrition.
6 Jul 2023
HaifaStream: Nutrición con calcio - Cómo las pequeñas acciones nos pueden conducir a grandes diferencias.
El calcio es un elemento clave que afecta a la calidad de la fruta, la salud de la planta y la resistencia celular. Al ser altamente inmóvil, y transportarse por el xilema a través de la transpiración, la escasez de calcio a menudo ni siquiera está relacionada con el suministro del mismo y puede suponer todo un reto hasta para el mejor de los agricultores. Amparo Pinar y Juan Manuel Díaz Martínez, expertos de Haifa Group, comparten aquí sus ideas sobre los distintos métodos para mejorar la absorción del calcio.
6 Jul 2023
HaifaStream: Calcium nutrition - How small actions can lead to great differences.
Calcium is a critical element affecting fruit quality, plant health and cellular strength. Being highly immobile, xylem transported via transpiration, calcium shortages are often not even related to calcium supply and can challenge the best of growers. Haifa Group's expert Juan Manuel Diaz Martinez and Marco Molenaar are here to share their insights for other means to improve calcium uptake.
6 Jul 2023
HaifaStream: Not just availability - Nutrient ratios and EC are critical for your crop's success.
Keeping your field always well-nourished is important indeed, but is there more to it? Haifa Group's experts Filippo Correddu and Dimitrios Kantzaras are here to share professional insights about the importance of nutrient ratio and EC management through the various crop stages and changing climatic conditions.
6 Jul 2023
HaifaStream: Water is the key to life and plant nutrition - What should you consider regarding your water source and how to response to the measurements?
Water sources significantly vary in quality. pH is a key factor evaluating nutrients availability. Haifa Group's experts Filippo Correddu and Marco Molenaar are here to highlight the key elements to consider about your water source to achieve the best nutrition for your crop.
6 Jul 2023
HaifaStream: Stock solution - the nutritional base for your crop. Simple tips & tricks
Badly mixed fertilizers can result with a layer of sediments at the bottom of your tank. Haifa Group's experts Juan Manuel Diaz Martinez and Janusz Wysowski are here to provide some simple tips to achieve a well dissolved stock solution, avoid unexpected challenges and even save time doing so.
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