Micronutrient Fertilizers Research Articles

Yield formation of spring rape seeds with the seed treatment with micronutrients

Relevance. Trace elements are of great importance in plant life. Due to their catalytic action, they allow plants to more effectively use the main elements of nutrition-solar energy, water and macronutrients — nitrogen (N), phosphorus (P) and potassium (K), which in turn has a positive effect on plant productivity and crop quality. Rape is very sensitive to the lack of boron, zinc. Trace elements are currently presented in various forms, and therefore the purpose of the research was to identify the effectiveness of boronand zinc-containing trace elements in the processing of seed material.Methods. Theobjectofstudyisspringrape(Brassicanapus) variety Yubileiny. Field experiments and studies were carried out in 2015–2017 in the Birsky district of the Republic of Bashkortostan. Tested options using micronutrient fertilizers: zinc sulfate, 21.5%; Ultramag chelate Zn, 15%; boric acid, 17.5%; Ultramag doron, 11%.Results. According to the results of studies, an increase in field germination by 6.5%, the yield of oilseeds by 37.1% and oilseeds by 1.7% when treated with Ultramag chelate Zn at a dose of 1 kg/ha was found.

Influence of soil temperature and moisture on micronutrient supply, plant uptake, and biomass yield of wheat, pea, and canola

Crop yield response to micronutrient fertilization is difficult to predict, particularly under unfavorable environmental conditions as these may alter both crop nutrient demand and the soil micronutrient supply to plant roots. The research objective was to evaluate the effect of various soil temperature and moisture conditions on crop growth response to added micronutrient copper (Cu), zinc (Zn), and boron (B) along with soil micronutrient supply and distribution among fractions. Brown and Dark Brown farm soils collected from southern Saskatchewan were used to grown wheat, pea and canola within controlled environment chambers. The biomass yields of all crops decreased under cold soil temperature and moisture stress (drought and saturated) conditions. Greater plant uptake of Cu, Zn, and B was associated with optimum (i.e., field capacity) soil moisture and warm temperature (23°C) growing conditions, compared to drought (i.e., 50% field capacity), saturated, and cold (5°C) temperature conditions. Environmental stress had the greatest impact on pea growth, reducing crop yield and micronutrient utilization efficiency more than 95%. Soil supplies of Cu and Zn were most negatively impacted by drought stress due to reduced mobility of these diffusion limited nutrients. The extractable micronutrients levels and chemical speciation fractions of Cu, Zn, and B indicating that bioavailability and micronutrient transformation were not affected during our short-term (i.e., six-weeks) study. However, it is suggested that assessments of micronutrient forms also be conducted on soil samples under actual moisture and temperature conditions as they exist in the experiment, as well as on dried, processed samples.

Influence of Organic Manures and Micronutrients Fertilization on the Soil Properties and Yield of Sesame (Sesamum indicum L.) in Coastal Saline Soil

The light texture coastal saline soils are well known for the deficiency of both macro and micronutrients especially zinc, boron, iron and manganese, etc. The zinc (Zn) and manganese (Mn) plays an important role in improving the growth, yield and quality of sesame. A field experiment was conducted to find out the influence of organics and micronutrients fertilization on the soil properties and yield of sesame in coastal saline soil. The experiment was carried out in a farmer’s field at Ponnanthittu coastal village, near Chidambaram Taluk, Cuddalore district, Tamil Nadu. The Physico- chemical properties and nutrient status of initial soil were: pH- 8.43, EC- 4.25 dS m-1, organic carbon- 2.30 g kg-1 and DTPA Zn – 0.70 mg kg-1 and Mn- 0.96 mg kg-1, respectively. The treatments included were T1 -Control (Recommended dose of NPK), T2 –125% NPK + Composted coirpith (CCP) @ 12.5 t ha-1, T3 -T2 + ZnSO4 @ 25 kg ha-1 soil application (SA), T4 -T2 + MnSO4 @ 5 kg ha-1 (SA), T5 -T2 + (ZnSO4 + MnSO4) SA, T6 -T2 + ZnSO4 @ 0.5 % foliar application (FA),T7 -T2 + MnSO4 (FA), T8 -T2 + (ZnSO4 + MnSO4 )FA, T9 -T2 + ZnSO4 (SA) + ZnSO4 (FA), T10-T2 + MnSO4 (SA) + MnSO4 (FA) and T11-T2 + (ZnSO4 + MnSO4 ) SA + (ZnSO4 + MnSO4 )FA. The experiment was laid out in a Randomized Block Design (RBD) with three replications, using sesame variety TMV 7. The results of the study indicated that the combined application of 125 per cent NPK + composted coirpith (CCP) @ 12.5 t ha-1 + ZnSO4 @ 25 kg ha-1 + MnSO4 @ 5 kg ha-1 through soil application along with foliar application of ZnSO4 @ 0.5% + MnSO4 twice at 0.5 per cent significantly increased the soil nutrient availability, microbial population, enzyme activity and yield of sesame in coastal sandy soil. This treatment recorded the highest sesame seed yield of 815 kg ha-1 and stalk yield of 1805 kg ha-1 as compared 100% recommended NPK alone 421 and 944 kg ha-1 of seed and stalk yield, respectively.

Vegetative growth and yield response of Amaranthus hybridus to mycorrhizal fungi (Glomus mosseae) inoculation, organic and micronutrient fertilizer application

This study was carried out at the Faculty of Agriculture Teaching and Research farm, University of Benin during the early planting season in April 2016 to evaluate the growth response of Amaranthus hybridus and some soil physical and chemical properties as influenced by organic and micronutrient fertilizers, mycorrhizal inoculum. In this experiment four treatments (poultry manure + cow dung + pig manure (PCP), poultry manure + mycorrhiza (Pm), poultry manure + mycorrhiza + foliar blend (PmMF) and control (C) were replicated four times and arranged in a randomized complete block design (RCBD) in a plot size of 70m2 . Soil samples were taken prior and after the trial at a 0-15cm depth for analysis. Results revealed that the soil (sand, silt and clay) and the textural class remained the same (loamy sand) and the micronutrient had no significant effect on the treated plots; however, all the treatments showed a significant increase in the soil pH, organic carbon, organic matter, NPK and Mg and a slight decrease in Ca and Na when compared to the pre-trial soil indicating an increase in residual soil nutrient status. Nutrient content N, P, K, plant height (51.13cm), number of leaves (67.80), stem girth (5.61cm), leaf area (194.87cm2 ) and yield (7.51 t/ ha) were significantly higher in plots treated with PM when compared to other treatments PMF, PCP and control in that order, with control having the lowest values of plant height (19.13 cm), number of leaves (26.00) stem girth (2.80 cm) leaf area (57.76 cm2 ) and yield (0.80 t/ha). Also, significantly higher spores, root arbuscules, root vesicle and root hyphae were recorded in PM (66.20,13.60,9.80,13.40) and PMF (74.40,10.50,11.10,10.50) treatment when compared to other treatments PCP and control.

Synthesis and Research of Functional Layers Based on Titanium Dioxide Nanoparticles and Silica Sols Formed on the Surface of Seeds of Chinese Cabbage

The problems of using synthetic titanium dioxide nanoparticles in agrochemistry as biologically active stimulants and micronutrient fertilizers are considered. Functional layers are formed on the surface of the seeds of chinese cabbage using commercial TiO2 P-25 nanopowder in the form of aqueous suspensions and in combination with tetraethoxysilane-based silica sols. The content of carbon and silicon on the surface of the seeds was studied before and after presowing treatment. The effect of TiO2 and additives of glycerol and polyethylene glycol on the surface morphology of the layers formed around the seed as a result of presowing treatment is analyzed. The positive effect of TiO2 nanoparticles on seed germination, the qualitative and quantitative composition of epiphytic microorganisms, the physiological state of seedlings, which stimulates plant growth and their resistance to stressors, including phytopathogenic microorganisms, was established. The synergistic effect of all factors (silica sol, TiO2 P-25 nanoparticles, a solution of macro- and microelements, polyols) on the growth and development of plants in the initial period of development is considered.

Ефективність удобрення в технології вирощування соняшнику

An important place among the factors that ensure a high yield of sunflower is occupied by plant nutrition conditions throughout the growing season and technological measures aimed at realizing the genetic potential of sunflower in some regions of Ukraine. It to Deeply study the potential of domestic hybrids under different growing conditions is necessary to identify their competitiveness and promotion, which will increase the quality and yield of the crop as a whole. Introduction and application in the production of new complex microfertilizers on the background of basic fertilizers, which can increase the efficiency of plant nutrients of mineral fertilizers and soil, is one of the ways to increase crop yields and quality of agricultural products. Despite the importance of sunflower as one of the traditional crops of Ukraine, the technology of its cultivation in the Steppe zone today has many unsolved problems. Among the technical measures aimed at increasing the yield of sunflower, an important place is occupied by the choice of optimal rates of fertilizer application and micronutrient fertilization in critical periods of crop development. The purpose of the research was to establish the influence of fertilizers and selection of high-yielding hybrids (NK Diamantis, SI Kupava, NK Neoma) for specific soil and climatic conditions through the formation of their productivity. Field research was conducted during 2018–2019 on typical low-humus chernozems. As a result of research, it was found that the use of twice foliar fertilization on the background of the main fertilizer Ecoline Bor, Nertus Bor, Bast Bor in phase 4 and 8 leaves of 1 L_ha stimulated the formation of leaf surface, contributed to the accumulation of dry matter and high yields sunflower hybrids. Maximum indicators of the leaf surface area were formed in the flowering phase of sunflower plants, which under the influence of fertilizer variants changed in the following range: in plants of the hybrid NK Diamantis from 37.6 to 48.7 thousand m2_ha, SI Kupava was 41.1 - 52.39 thousand m2_ha, NK Neoma - 36.5- 47.6 thousand m2_ha. The highest indicator of leaf area was formed by plants of the SI Kupava hybrid on the variant with application of N36P56K108S28 + N23 + Ecoline Bor ”( 4 and 8 leaves), which amounted to 52.39 thousand m2_ha.

Chelated micronutrient fertilizers as effective antioxidants applied for foliar plant treatment

The antioxidant status of spring wheat cells was studied for foliar treatment with a 0.1 % solution of copper, molybdenum-containing chelated micronutrient grade ZhUSS-2 in field experiments when cultivating plants on soil with a low content of these trace elements. The activation of the antioxidant enzymes of superoxide dismutase and peroxidase, as well as a decrease in the activity of lipid peroxidation (according to the content of malondialdehyde) under the action of this drug in all phases of plant vegetation was identified. A similar effect of iron-, manganese- and zinc-containing ZhUSS micronutrient fertilizers is analyzed. The conclusion is made about the antioxidant effect of these chelated micronutrient fertilizers.

Efficacy of sources and application mode of micronutrients on dry matter accumulation, productivity of wheat and residual organic carbon status in sandy loam soil

The application of NPK for crop production is not quite enough for higher and quality crop production as well as soil health so balance fertilization with combination of macro and micronutrients application is much important. Selection of suitable nutrient sources, quantity, method and time of application are equally important to get higher yield with maintaining soil quality and environment. Considering this point, a field experiment was conducted following the 4R Nutrient Stewardship to evaluate the effect of different sources of micronutrients (Zn, Mn and B) fertilizers and their mode of application along with NPK on wheat crop during rabi season of 2017–18 and 2018–19 at the Crop Research Centre, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut, Uttar Pradesh, India. The maximum dry matter accumulation at each sampling interval was found with RDF + soil application of Zn HEDP+ MnSO4+ Colemanite with the highest grain (4.25 t ha-1), straw (5.89 t ha-1) and biological yield (10.14 t ha-1), followed by RDF + foliar application of Zn HEDP + EDTA Mn + DOT. The application of RDF + foliar application of Zn HEDP + EDTA Mn + DOT resulted in a highest harvest index (HI) 42.18. Organic carbon, essential factor for soil conservation was also maximum with application of RDF + soil application of Zn HEDP + MnSO4 + Colemanite during both years while. The foliar application of any single micronutrient with RDF improved the parameters considerably over RDF.

Content of heavy metals in Haplic Chernozem under conditions of agrogenesis

The paper presents the results of a long-term study on the content and distribution of heavy metals in Haplic Chernozem of agrocenoses in southern zone of Rostov Region. The impact of various agricultural technologies traditional (using moldboard ploughing) and resource-saving (minimum and No-till) on accumulation and mobility of Pb, Zn, Cu in Haplic Chernozem in winter wheat cultivation is considered. The total content of Pb, Zn, Cu in the winter wheat areas corresponds to the background level and does not exceed permissible concentrations. Low mobility of elements (Pb 2.0-3.0%; Zn and Cu up to 1.0% as a percentage of their total forms) is a regional soil feature. In addition, the low availability of Zn and Cu in soils is due to their removal with the crops in the absence of micronutrient fertilizer replenishment. The significant role of soil organic matter in the accumulation of both total and mobile forms of heavy metals in soil has been confirmed. The intensity of the cultivation methods used has a significant effect on the total content of Zn, Cu and on the mobility of Pb, Zn, Cu in Haplic Chernozem.

ПРИЕМЫ ПОВЫШЕНИЯ ПРОДУКТИВНОСТИ ФОТОСИНТЕЗА И УРОЖАЙНОСТИ МАСЛИЧНЫХ КУЛЬТУР В СТЕПНОМ ПОВОЛЖЬЕ

Studies have shown that along with sunflower in the steppe Volga region, it is necessary to cultivate other valuable oilseeds more widely, among which one of the most promising is dye safflower, the seeds of which contain up to 37% fat. Safflower oil is light yellow in color, is semi-drying, and in terms of taste is not inferior to sunflower oil. The sunflower greatly dries up and impoverishes the soil, it is harvested very late and therefore it is impossible to properly cultivate the field for the next crop rotation. After the sunflower, the field is removed in pairs, i.e. do not sow anything, and it will recover during the summer. Safflower, in contrast to sunflower, is a more favorable predecessor, because it is cleaned early - in favorable midsummer weather. After harvesting it, the soil can be well prepared for subsequent culture. The aim of the research was to improve the technological methods of sunflower and safflower cultivation in the steppe Volga region. It has been established that in order to increase the production of high-quality oilseeds while saving costs and stabilizing field agrocenoses of these crops in the steppe Volga region, it is necessary to: - optimize the placement of sunflower and safflower in microzones of the Saratov region; - when growing sunflower, treat the seeds before sowing with the Albit growth stimulator (200 ml / t) and treat the crops in the budding phase with the leaf fertilizer Polydon oilseed (1.0 l / ha); - when growing safflower, apply seed treatment with a Zircon growth stimulator (30 ml / t) and treatment of crops in the budding phase with Siliplant micronutrient fertilizer (1.0 l / ha).

Responsiveness of buckwheat varieties to foliar applications by microfertilizer under forest steppe of the volga region

The yields of modern intensive varieties of buckwheat in arid regions are highly susceptible to adverse hydrothermal growing conditions. The selection of optimal compositions and technologies for using modern agrochemicals that provide an adaptogenic effect and a favourable vegetation regime of plants can be an effective way to stabilize the grain production of this warm-loving but the drought-resistant crop. Scientists have poorly studied these issues and the issues of efficient use of mineral nutrition resources in buckwheat. They studied the responsiveness of buckwheat varieties, that differ in the morphological and biological characteristics of plants, to the foliar application by Yara concentrated complex water-soluble fertilizers containing macroand microelements.The data obtained indicate the presence of varietal specificity, which manifests itself to varying degrees of plant responsiveness to foliar application in the formation of leaf area, grain yield and quality indicators of the crop. The authors made conclusions about the preferred dates for foliar application with the studied Yara complex micronutrient fertilizers. When the foliar application of microelements in the phase of the beginning of grain formation, the K-850 cultivar had the highest yield and the best quality parameters of grains. For the K-899 cultivar, the application in the russeting phase was most effective for grains and affected the best plumpness of the grains. The more powerful morphological potential of Batyr plants was not realized by an adequate increase in yield for the performed feeding. The authors observed a slight tendency to decrease the crude protein content in grains during the foliar application which is probably due to the inverse correlation of this trait with the formation rate of the organic mass of plants.

Technological Effectiveness of Chelated Micronutrient Fertilizers in Leaf Treatments Inducing Grapes Resistance to Biotic and Abiotic Stresses

Fertilizers based on complexes of chelated trace elements are the most common and effective agricultural products for the induction of protective-compensatory and other adaptive reactions of plants. The influence of various leaf treatments technologies with chelated micronutrient fertilizers application on the stability of grapes is studied under increasing abiotic and biotic environment factors within the Taman Peninsula (Russia) considering the content of proline, photosynthetic pigments (chlorophylls and carotenoids), total water in the leaves, as well as the development of infectious drying of clusters and leaf spotting reduction due to the treatment. The new optimized scheme application on the chelated micronutrient fertilizers showed a predominantly positive effect on the grape plants adaptation to high-temperature drought and fungal diseases susceptibility, as well as essential increase of the average cluster weight and yield per hectare.

Вплив позакореневого удобрення мікроелементами на продуктивність женьшеню в умовах Полісся України

The article shows the state of the problem with the introduction of ginseng in the Polesie zone of Ukraine. The main goal was to study the effect of Reakom micronutrient fertilizers (Zn, Cu, B, Mo, Co ) at a dose of 2.5 l/ha and 5 l/ha on the growth of the aerial part and the roots of three-year-old seedlings and six-year-old ginseng seedlings, the contents of macro- and microelements in plant leaves, the fruiting productivity of six-year-old plants in the conditions of Polissya Ukraine. The studies were conducted on the territory of the Boyarsky LDS on sod-podzolic light-loamy soil on fluvioglacial sands, which are underlain by moraine. The use of Reakom micronutrient fertilizers in foliar dressing of plants contributed to an increase in fruiting productivity and an increase in root mass by 25-35%, the phytochemical parameters of which corresponded to the requirements of the temporary pharmacopoeial article 42В-163/160 / 37-536-97 and were classified as commodity. The greatest yield of three-year-old ginseng roots was recorded at the maximum dose of Reakom foliar fertilizer for garden crops, but they had the greatest mass when sprayed with Reakom for ginseng N 1 at a dose of 5 l/ha. Six-year-old ginseng roots formed the maximum productivity and root yield with a lower dose of Reakom for ginseng N 2 (2,5 l|ha).

Egg masses treatment with micronutrient fertilizers has a suppressive effect on newly-emerged nymphs of the brown marmorated stink bug Halyomorpha halys

Egg masses treatment with micronutrient fertilizers has a suppressive effect on newly-emerged nymphs of the brown marmorated stink bug Halyomorpha halys

Use of seed coating for chicory sowing

Relevance. When using precision seeders, seeds that are uniform in weight and size are needed. The maximum uniformity of the seeds can be achieved by by pelleting. Thanks to the coating, small chicory seeds increase their size by 8 times or more. In this case, the composition of the shell can include various plant protection products against pathogens, growth stimulants, micronutrient fertilizers. It is advisable to seed the seeds with their initial germination of at least 95%.Material and methods. The article presents the results of a study conducted at the Rostov Vegetable Experimental Station for chicory – a branch of the Federal State Budgetary Scientific Institution Federal Scientific Vegetable Center, where seeds with fillers were used for sowing root chicory: Maxim fungicide, treater Prestige, Isabion – liquid organic and mineral fertilizer, Agrogel.Results. As a result, a positive effect of pelleting on the sowing quality of seeds was revealed (germination energy and field germination are higher than in the control, 2% and 0.6%, respectively, and laboratory germination at the control level), effectiveness against root rot during the growing season and during winter storage time, increase in crop root crops yield by more than 30% and ensuring net profit in comparison with the control by 21.4 thousand rubles / ha. At the same time, the level of profitability is increasing by 26%.

Effects of Gibberellic acid, micronutrient fertilizer and Calcium nitrate foliar fertilizer on growth and yield of tomato Solanum lycopersicum L. cultivated in Vietnam

In this study, we present the experimental results which evaluate the influence of Gibberellic acid GA3, micronutrient fertilizer and Calcium nitrate Ca(NO3)2 foliar fertilizer on the growth and yield of tomato cultivar NHP11 cultivated in a net house located in Thanh Hoa province, Vietnam. The experiment including 8 formulas was laid out in a randomized complete block design (RCBD) with three replications. In treatments with the application of GA3, micronutrient fertilizer and Ca(NO3)2 foliar fertilizer, plants were observed to grow better than the control (via some indicators such as plant height, leaf area index, number of flowers per plant, effective flower rate, number of fruits per plant, average fruit weight per plant). The yields differed due to different formulas on tomato. Results indicated that the highest yield was recorded at 50.73 tons ha-1 when the combination of GA3, micronutrient fertilizer and Ca(NO3)2 foliar fertilizer was applied in F8, followed by the record of 47.31 tons ha-1 in F6 (in presence of GA3 and Ca(NO3)2 foliar fertilizer), 46.55 tons ha-1 in F5 (in presence of GA3 and micronutrient fertilizer), 45.79 tons ha-1 in F7 (in presence of Ca(NO3)2 foliar fertilizer and micronutrient fertilizer). The yields of tomato in F2, F3, F4 when treated with supplemented separately GA3, micronutrient fertilizer and Ca(NO3)2 foliar fertilizer respectively were higher than those of the control (39.90 tons ha-1) but lower than the yield in mixed formulas. Results show that the treatment combination of GA3, micronutrient fertilizer and Ca(NO3)2 foliar fertilizer can promote the growth and yield of tomato.

New environmentally friendly bio-based micronutrient fertilizer by biosorption: From laboratory studies to the field

This paper reports the studies on the elaboration of new environmentally friendly fertilizer obtained by valorization of post-extraction biomass residues of alfalfa (Medicago) and goldenrod (Solidago), after extraction with supercritical carbon dioxide, via biosorption process. The performance and controlled release properties of fertilizer were assessed in laboratory under in vitro and in vivo conditions, as well as on the field. In vitro tests show high bioavailability of micronutrients (Cu, Mn, Zn) administered on the biological carrier – between 60 and 80%, in relation to 100% availability of sulphate microelements. This phenomenon is desirable and indicates slowed release pattern of micronutrients. Germination tests demonstrated the phytotoxicity effect of sulphates, while yield increase and biofortification effect by the use of new fertilizers was achieved. Field trials showed, that with respect to conventional micronutrient fertilizers (mineral salts), fertilizers obtained via biosorption resulted in increase of the content of Cu, Mn and Zn by 2.6, 88.6 and 50.6% in plant biomass, respectively. This is important from the point of view of plant and animal nutrition. In addition, the uptake of fertilizer components was calculated, indicating their degree of use. Calculations of micronutrient uptake in field trials shows a higher uptake of fertilizing microelements of products obtained via biosorption by 4.04% (Zn), 1.47% (Cu) and 20.63% (Mn) in relation to sulphates.

The Effect of Autumn Foliar Fertilization on the Yield and Quality of Winter Oilseed Rape Seeds

This paper presents the results of a 3-year field experiment conducted in north-eastern (NE) Poland to determine the influence of the autumn application of foliar macronutrient and micronutrient fertilizers (control, one application in BBCH (Biologische Bundesanstalt, Bundessortenamt and Chemische Industrie) stage 16 (six leaves unfolded)), two applications in BBCH stages 14 (four leaves unfolded), and 16 (six leaves unfolded) on the growth and development of winter oilseed rape plants, nutrient accumulation, overwintering success, yield components, yield, nutritional value (crude fat content, fatty acid concentrations), and feed value (total protein content, concentrations of acid detergent fiber and neutral detergent fiber, quantitative and qualitative composition of glucosinolates) of seeds. When applied in BBCH stages 14 and 16, foliar fertilizers stimulated the development of leaf rosettes, increased the accumulation of minerals in aerial rosette parts (N, K, and Mg) and roots (K, Cu, Mn, and Fe), and contributed to the overwintering success of winter oilseed rape plants (by 8–11%). The application of foliar macronutrient and micronutrient fertilizers in autumn increased seed yield (by 0.25 Mg ha−1), contributed to a significant increase in the crude fat content of seeds (by 1.3–7.4 g kg−1 dry matter (DM), increased the content of oleic acid, decreased the concentration of linoleic acid, and increased the content of glucosinolates, mostly the alkenyl fraction with antinutritional properties.

Formation of a crop of medicinal crops (<i>Tanacetum vulgare</i> L., <i>Echinacea purpurea</i> L.) under influence of essential microelements

Relevance. A wide range of pharmacological effects of tansy and Echinacea purpurea determine the continuing interest in the study of these cultures. Medicinal crops contain not only a large number of biologically active substances, but also trace elements necessary for normal growth and development. Agronomic bio-enrichment of medicinal raw materials allows you to increase productivity, manage product quality in the direction of enhancing the pharmacological action. Thus, the aim of the work was to study the effect of various doses of zinc acetate on the productivity of two medicinal crops of tansy and Echinacea purpurea.Material and methods. Studies were conducted from 2012 to 2018 on meadow-chernozem soil of the southern forest-steppe of Western Siberia. As objects of research, perennial medicinal crops were chosen – Tanacetum vulgare L. and Echinacea purpurea L. Zinc fertilizers were applied in the background (N125, N135P45K45) used in acetate form.Results. The introduction of zinc fertilizers into the soil contributed to an increase in the yield of medicinal crops in the conditions of the south of Western Siberia. It was revealed that the maximum yield was observed on the variants of 0.75 MAC Zn (Tanacetum vulgare L.) and 0.5 MAC Zn (Echinacea purpurea). Thus, tansy was more responsive to the use of micronutrient fertilizers. The studies established a high correlation relationship (r = 0.88–0.99) between yield indicators and doses of zinc added. The obtained optimal doses of zinc fertilizers (60 and 21.4 kg / ha) can be recommended for growing these crops in order to increase their productivity.

Ufa forestry-technical school, of the Ministry of Forestry of the Republic of Bashkortostan, Ufa, Russia

In the Republic of Bashkortostan, in the greenhouse of the year-round operation of the experimental farm of the state-run vocational training school "Ufa forestry-technical school" (Limonary in Ufa city), tropical and subtropical fruit crops have been cultivated for many years. The farm constantly monitors the agrochemical, physico-chemical, biochemical indicators of soil grounds. The agrochemical characteristics of soils during the cultivation of exotic fruit crops have been studied. For fertilizing all cultivated plants of the farm, organic and mineral macro- and micronutrient fertilizers are regularly added at regular intervals. When using fertilizers, the need for nutrient elements of crops is taken into account for successful growth and fruiting by periods of growth and agrochemical data. The study presents a comparative characteristic of soil grounds for 2016 and 2018, which shows: humus content, mobile forms of P2O5 and K2O, mineral forms of nitrogen, pH (salt). The results of agrochemical surveys allow you to adjust the dose of fertilizers for the cultivation of major crops, planting material and for the formation of the crop.