Video No. 3 | The Benefits of Bigger Root Growth

What Science Says About


About this Series

An engaging series of 11 videos that feature Dr Hooshang Nassery and Carol Phillips in a conversational style presentation about the science that underpins RLF product and practice.

It has been called ON SOLID GROUND for good reason, because the science of plant physiology provides the indisputable basis upon which all RLF products are developed.

This series will bring a relaxed and simple understanding for farmers and growers everywhere about the science that underpins the RLF brand, and the expertise that goes into every specialised crop nutrition product that RLF manufactures.

Carol Phillips talks with Dr Hooshang Nassery about The Benefits of Bigger Root Growth

Carol Phillips (CP) : Why is root growth so important?

Dr Hooshang Nassery (HN) : Well, because generally you can say that more root growth means more contact with nutrients in the soil. At the same time, probably more reserve of nutrients and water in the root system. Root growth responds normally to the level of nutrients in the soil. So, while we like to have more roots, we also want to have a good balance between root and shoot, so that the shoot is not deprived necessarily from nutrients coming through the soil. Because they come through the root, and then they go to the leaves – or the top part of the plant. And we know that a lot of reactions of root growth, or responses of root growth, is to the level of nutrients in the soil. And that is why, therefore, we have to balance the level of nutrients in the soil to make the optimum growth that we are after for
the root.

CP : Okay. So if the plant gets a good start, and the root system develops quickly and gets into the soil more, that supports, or sets that plant or the crop for better growth and better yield. Is that what the importance of the root system is?
HN : Yes. That’s one aspect, that we basically relate to, or try to go with seed priming to achieve. Early seed growth, or early root growth, and quicker seed germination, will always be beneficial for avoiding disease by the root system, for establishment in harder environment (drought and cold, etc.), and we can achieve that by seed priming. Whilst, when the seedling started in that scenario with maximum potential, and early root growth, then the control of the root growth beyond that is very much related to the input of fertiliser. And that’s where the optimum achievement
is required.
CP : Okay. So is this brought about, or is it supported more, by an Ultra Foliar – again with those balanced 12 nutrients?
HN : Yes exactly. Yes. The reason is this that if, for example, we have excessive nitrogen and phosphorus input to the soil, and delete if you like, or forget about foliar strategy and fertiliser, then we limit root growth. And that’s where the advantage of integrated fertiliser practice is. In other words, we try to have enough nutrients for optimum root growth, and then use the foliar to supply more nutrients, and at the same time if required – which is often a good thing – to get extra root growth rather than limited root growth, or rather that short root growth.
CP : So, this is really an important aspect of a crop or plant development?
HN : Absolutely, yes. It normally happens with what we called, Foliar 1, or vegetative growth foliar, and these products have high level of nitrogen, with a balance of other nutrients like the Ultra Foliars, or Ultra Foliar with extra nitrogen as the farmers use to put in the tank. But we do have a couple of products like that actually in the chain to come up and avoid the tank mixing in general.
CP : Well I’m sure that will be well sort after. Thank you, Hooshang.
About Dr Hooshang

Hooshang is RLF's Plant Physiologist and he heads the company's Research, Development and Technical team. He brings the knowledge and enthusiasm for the industry with over 40 years of experience and he has played a central role in a number of new product developments, including the world-leading and innovative seed nutrition technology BSN. Contact Hooshang.

About Carol

Carol is RLF's Communications, Media and Policy consultant. She is the main author of information, marketing and website publications and part of her role is to plan targeted marketing and information strategies and resources for both customers and the wider RLF team. Contact Carol.

RLF Product Categories

RLF has 11 key product categories.

They all include specially developed and technically advanced crop nutrition products for all crop types, deficiencies and conditions.

The links at the following categories identify the specific, high-technology products available in each of the product categories.

Contact Details

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