These auxins have been found to encourage the growth of more cells - in which they differ from more familiar types of auxin which simply enlarge the cells without increasing their number. Two new auxins, as yet unidentified, but unlike any of the known indolyl-acetic acid types, were also discovered in 1958 in the Laminaria and Ascophyllum seaweeds used for processing into dried seaweed meal and liquid extract. All the others had dried out, and had to be ploughed up for other crops.Īuxins in seaweed include indolyl-acetic acid, discovered in seaweed in 1933 for the first time. The only fields suitable for a second crop of hay were those which had been fertilized with seaweed. This was not in any way a scientific experiment, but the results were most obvious. One might describe the process more simply, if less accurately, by saying that the salts formed by alginic acid with soil metals swell when wet and retain moisture tenaciously, so helping the soil to form a crumb structure.Īs to water-retaining characteristics, Miss Constance MacFarlane of the Nova Scotia Research Foundation told members of the Fourth Seaweed Symposium at Biarritz, in 1961: 'In the spring of 1956 I was greatly impressed with fields in the island of Jersey. They do this because the alginic acid in the seaweed combines with metallic radicals in the soil to form a polymer with greatly increased molecular weight, of the type known as cross-linked. It is a matter of common experience that seaweed, and seaweed products, improve the water-holding characteristics of soil and help the formation of crumb structure. We will deal first with alginic acid as a soil conditioner. All are found in fresh seaweed, dried seaweed meal and liquid seaweed extract - with the one exception of vitamins: these, while present in both fresh seaweed and dried seaweed meal, are absent from the extract. Stephenson wrote “seaweed contains all major and minor plant nutrients, and all trace elements alginic acid vitamins auxins at least two gibberellins and antibiotics. Because in the states we (the public) are about 50 years behind the Brits in the comprehension of root stimulation, let us see what they have been writing. Since the 1950’s the Brits have identified some 60 compounds in composted seaweeds that are beneficial to root growth.
In England, for quite some time, there has evolved a more sophisticated understanding of things. In these United States fertilization is mostly N-P-K, with occasional discussion of “trace" elements. Only prune the necessary problems.įertilization and root stimulation: sounds the same, but it is not. It too will push leaf growth and stress the trees. The same must be said for pruning the first year. Do not put them in the root-ball until dormancy is reached in the first year. These may be applied at any time, but only in the in the “donut” (a ring extending 2-3 feet outside the transplant rootball). However with root stimulators, it is quite a different matter. Your new tree is thirsty! Pushing leaf growth the first year will simply exacerbate the acute imbalance. Remember 90% or more of the roots have just been removed. First, lets recall the black letter rule: For the first year, no fertilizer in the root-ball until leaves have fallen.
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