VIVA

VIVA is basically an enriched humic-acid with some compounds such as Vitamins, Pollysaccharides,  Aminoacid  and proteins.

in soil with undesirable structures or toxic compounds which prevents roots from development and expanding which results in plants malfunction and abnormal behavior it suspend almost all of these reactions and force the plant to develop its root system and specially expand roots in grid form While using RADIFARM make the root to go deep into the lower layers of soil flora.
In many sodic soils you can use VIVA with Humicacid and RETROSAL to 1- restart the absorption system of the roots 2-stimulate the roots to rebuild itself 3- uptacking the fixed elements in the soil 4- reducing the salinity of the bedsoil 5-contribute in better flowering and maturity

A practical Guide for TomaTo crop. written by Khosravan, Hamed 1980

ISBN:978-600-04-6045-7
Published year Dec. 2016
Jahad Daneshgahi Publication/ Ferdowsi University

Tomato NUtrition

PDF

Apple after harvest N fertilization

Our research has shown the best time to apply N fertilizer is from bud break to the beginning of rapid shoot growth (shortly after petal fall) or post harvest. How much N fertilizer should be applied?  The answer to this question depends on three factors: 1) tree nitrogen requirement; 2) natural supply of nitrogen from soil; and 3) uptake efficiency of applied fertilizers.

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Arjan Valley / between Shiraz and Kazeroon / Fars province/ 2016