Vladimir Groshev, candidate of agricultural sciences,
Hello Nature director
(Italpollina S.p.A.) in Russia and the CIS
Organomineral Support for Healthy Growth
It is no secret that as long as the plant remains strong and healthy, it is "too tough" for most harmful microorganisms. Various stresses lead to a weakening of turgor, microtraumas, burns and, as a result, an increase in the permeability of plant tissues for pathogens.
Another problem often becomes unbalanced nutrition, when plants are overfed with nitrogen fertilizers, but there is not enough calcium, phosphorus and potassium necessary to strengthen the cellular system.
The consequences of negative factors can be neutralized by regular application of preparations with peptides and amino acids, which increase the absorption of nutrients by a quarter, increasing the yield.
Plant peptides and amino acids are a ready-made building material for plant tissue, their introduction into the phases of crop formation activates optimal functionality and ensures the accumulation of nutrients in the generative organs, thereby directly affecting the quality and quantity of the crop.
In our opinion, the best concentrate preparations of 100% vegetable peptides and amino acids are the drug already known for its high efficiency. TRAINER (1,5-3 l/ha) and the latest water-soluble AQUAMINE (0,5-2 kg/ha), which contains 62-66% of peptides and amino acids, unprecedented for plant hydrolysates.
Two more products from the Hello Nature range can be used in combination with these drugs for active prevention and control of the development of diseases. A drug PHOSPHITE-1 (2-3 l / ha) due to the high concentration of potassium phosphite causes an active synthesis of phytoalexins - highly active compounds that slow down the growth of the pathogen, prevent the formation of spores, and disrupt the metabolic processes of pathogenic microorganisms. The abundance of mobile phosphorus and potassium provides thickening of cell walls and outer tissues, which is an effective physical barrier to pathogen penetration.
In the event of the appearance of foci of the disease, the most effective measure to combat a wide range of pathogens, including late blight, powdery mildew, and various types of rot, is a copper-containing contact-systemic preparation. SKUDO (1,5-2,5 l/ha). This preparation is certified for use in organic agriculture and has no waiting period, which is very important in case of need for treatments in the last phases of vegetation.
The alternation of both drugs helps to maintain the health of crops at minimal cost, protect them from the invasion of pathogens, strengthen plant health from the inside, and also prevent the development of diseases.
In connection with the increasingly intensive use of various chemical plant protection products, which are often used haphazardly and uncontrollably, resistance is developed in the harmful objects to which they are directed, i.e. the resistance of populations of pathogenic microorganisms to substances that were previously lethal to them. At the same time, beneficial organisms that inhabited the area or soil before the advent of intensive technologies, but do not have resistance to toxic effects, also suffer during chemical treatments. Thus, in many agricultural regions, locations appear where harmful microorganisms prevail and fewer and fewer available fungicidal preparations act on them, which adds to the difficulties in preserving the crop and increases the costs of agricultural organizations for the production of vegetable crops.
The solution to the problem of preserving vegetable crops from damage by the main fungal and bacterial diseases, in our opinion, can be a no less aggressive variety of microbiota - trichoderma, which can compete with the environment of resistant pathogens without the use of chemical fungicides.
Trichoderma is a genus of fungi found in all soils. Many species of this genus are mycoparasites, that is, they act as natural biocontrolling agents against many soil plant pathogens (fusarium, rhizoctonia, phytophthora, sclerotinia, Alternaria).
Trichoderma atroviride is one of the best candidates for use in integrated plant protection system programs. This variety of trichoderma is the most aggressive towards pathogens and at the same time tolerant to adverse weather conditions, provides the synthesis of auxins and other growth-stimulating substances, and also promotes the introduction of mycorrhiza and does not block the development of beneficial microorganisms.
Hello Nature has several products in its portfolio that include a highly effective strain Trichoderma atroviride in various concentrations and combinations with mycorrhiza or beneficial bacteria. In this article, we will focus on the trichodermal preparation TIFI. It is a water soluble powder containing 2 x 108 CFU/g T. atroviride, which is recommended for both fertigation (1-2 kg/ha) and spraying (0,5-1 kg/ha).
In the period 2019-21, in a number of farms, we conducted production tests of the TIFI preparation on various vegetable and fruit crops. In particular, in 2019, in the Gorodishchensky district of the Volgograd region, on sowing onions, an experiment was made with a single application of TIFI at a rate of 1 kg/ha through fertigation in comparison with the economic control (Benazol SP, 6 kg/ha) in the 3-leaf phase. According to the conditions of the experiment, all other parameters of the power supply and protection circuits were identical.
Intermediate measurements showed that the variant with FFI had an active impact on the formation of a more powerful root and leaf systems, which ensured an increase in yield by 11 t/ha compared to the farm variant (the yield in the field rose to 104 t/ha). In addition, the TIFI plot had the same level of onion protection against Fusarium as in the variants where chemical plant protection products were used. In addition, the crop with the option of using TFI turned out to be more resistant (the result of the vital activity of Trichoderma in the root layer) to the manifestations of rot that occur during storage.
Research has also confirmed that the introduction TIFI through fertigation and abundant foliar treatment of plantings 1-2 months before harvesting, it provides a high concentration of Trichoderma spores on the root neck or root crops before laying the crop in storage, which helps to reduce storage losses and maximize the economic benefit from the harvested crop.