scholarly journals Effect of the cultivation of legumes on the dynamics of sod-podzolic soil fertility rate

2019 ◽  
Vol 9 (3) ◽  
pp. 8-12
Author(s):  
U. M. Karbivska ◽  
A. O. Butenko ◽  
V. I. Onichko ◽  
I. M. Masik ◽  
Z. I. Hlupak ◽  
...  

The effect of cultivation of legumes on the fertility rate of sod-podzolic surface-gleyed soil has been investigated. Based on the obtained results it has been found that on average, during the years of cultivation, the fertilizer factor with a percentage of 62% turns out to be more influential in terms of yield obtained from 1 ha of dry mass. The highest nutrient content is observed on the alfalfa variant: alkaline hydrolyzed nitrogen-80.4 mg/kg of soil, mobile phosphorus-81.5 mg/kg of soil and exchangeable potassium-77.3 mg/kg of soil.


2017 ◽  
Vol 1 (92) ◽  
pp. 30-35
Author(s):  
Ya.P. Tsvey ◽  
S.O. Bondar ◽  
S.M. Senchuk

For typical leached black soil it was proved that introduction of 7,5 t/ha manure + N P K in the first three rotations, 8.3 t/ha manure + N P K in the fourth rotation, and 16.6 t/ha manure + N P K in the first link of the fifth rotation led to an increase in the content of mobile phosphorus in the ploughed soil layer to 270-325 mg/kg, exchangeable potassium to 95-105 mg/kg, whereas at the beginning of the experiment, the content of mobile phosphorus was 144-150 mg/kg and exchangeable potassium 66-71 mg/kg. Content of alkali hydrolysed nitrogen in soil was stabilized against the background of organic and mineral fertilization at the level of 140-124 mg/kg, whereas without fertilizers it was 112-105 mg/kg soil and at the beginning of the experiment 177-173 mg/kg of soil.



2021 ◽  
Vol 12 (32) ◽  
pp. 102-113
Author(s):  
A.L. Silaev ◽  
E.V. Smolsky ◽  
G.V. Chekin ◽  
V. Yu. Simonov ◽  
A. Novikov

The article provides a modern assessment of technogenically polluted floodplain landscapes of various rivers of the Polesian Lowland. The carried out ecological monitoring of productivity, radioactivity of perennial grasses and fertility of floodplain soils revealed the following results, tendencies and regularities: the most favorable set of conditions for obtaining an air-dry mass of grasses with the highest productivity up to 5 t / ha was found on the floodplain of the Iput River, possibly used as hayfields floodplain lands at present, with a 137Cs pollution density below 555 kBq / m2 obtained after the Chernobyl accident, the use of floodplains as hayfields with a 137Cs pollution density above 555 kBq / m2 is impossible, coarse fodder from the floodplains of the Iput and Besed rivers is 6.4 and 6.6 times higher than the permissible level of 137Cs content in products, the content of organic matter, calcium and magnesium grew in the landscape of the floodplain by subsystems: near-river → central → near-terrace landscape, a high content of mobile phosphorus and exchangeable potassium, respectively, from 227 to 362 and 122 to 266 mg / kg were found in the near-terrace subsystem of the studied floodplains, the effect of fertility on an increase in productivity is positive, with the exception of the effect of acidity and negative on an increase in specific activity 137Cs, established an average role (0.30 ˂ r ˂ 0.70) of fertility indicators in increasing productivity, the correlation coefficient (r) ranged from 0.41 to 0.64 and -0.38, revealed a strong role (r ˃ 0.70) of the content of phosphorus available for a plant in a decrease in the specific activity of 137Cs in the air-dry mass of grasses, the correlation coefficient (r) was –0.70.



2019 ◽  
Vol 20 (4) ◽  
pp. 368-377
Author(s):  
I. V. Lyskova ◽  
T. V. Lyskova ◽  
F. A. Popov

The influence of after-effect of mineral fertilizers and lime on productivity of meadow clover 'Dymkovsky' with regard to the content of mobile phosphorus in the soil have been studied in a long stationary trial (established in 1971) on sod-podzolic soil developed on clay loam mantle in the Kirov region. The study was conducted in 2008-2018 on soil backgrounds with various acidity and mobile phosphorus sufficiency: without lime application (рН 3.68, Al 11-17 mg/100g of soil, P2O5 142-291 mg/kg of soil) and with lime application (рН 5.5, Al was not revealed, P2O5 120-232 mg/kg). In variants without application of phosphoric fertilizers the mobile phosphorus sufficiency was 77-84 mg/kg against acid background, and 66-89 mg/kg against limed background. The average yield of clover green mass in 2012 was 17.24 t/ha against acid background and 30.77 t/ha against limed background; the increase due to lime application was 78.4%, in 2018 – 13.0 t/ha, 28.3 t/ha, 118%, respectively. Reliable correlation links have been revealed between the degree of soil acidity (рН and Hh) and productivity of clover green mass, r = 0.76 and r = -0.79, respectively. The effect of the content of mobile phosphorus in the soil on clover productivity was insignificant. Weather conditions during the research influenced the content of crude protein in clover dry mass: in 2012 this indicator varied from 11.92 to 12.74% on the average, in 2018 ‒ from 17.47 to 19.88% against acid and limed background, respectively.





2021 ◽  
Vol 209 (06) ◽  
pp. 12-21
Author(s):  
Mariya Rublyuk ◽  
Dmitriy Ivanov ◽  
Ol'ga Karaseva

Abstract. The aim of the research is to study the effect of multipurpose compost on the agrochemical indicators of sod-podzolic soil and the productivity of field crop rotation in reclaimed agricultural landscapes of the humid zone. Methodology and methods of research. The studies were carried out at an experimental area in the Tver region in 2013–2019 on a drained soddy-podzolic gley soil. Multipurpose compost was applied for sowing spring wheat at a dose of 12 t/ha, which is N300P180K120. Subsequently, the aftereffect of compost on soil properties and crop productivity in the crop rotation was studied: spring wheat – spring rapeseed (for green manure) – winter rye - oats with over-sowing of grasses – a mixture of 1–3 years of use. Grain crop rotation was deployed in time. Results. It was found that the level of mobile phosphorus increased by 7.4–23 %, exchangeable potassium – by 6.8–26.5 %. In areas with a low content of nutrients, the accumulation of mobile phosphorus (in the eluvial-transit variant of the northern slope) and exchangeable potassium (in the transit northern slope) increased by 23.6 and 26.5 %, respectively. On variants of the experiment with a high content of nutrients, their content decreased slightly over seven years. The amount of easily hydrolyzable nitrogen during the rotation of the crop rotation decreased by 13.4–57.2 %. The content of organic matter increased by 6.7–11.9 % (rel.). Soil acidity (pHKCl) during the rotation of the crop rotation increased by 0.03–0.23 units. The greatest acidification of the soil solution was noted in the transit-accumulative variant of the northern slope (by 0.23 units). It was found that the use of multipurpose compost contributed to an increase in crop yield on average per rotation by 1.6–13.2 c/ha of feed units. The maximum yield increase (44%) was obtained in the eluvial-transit and transit variants of the southern slope. Scientific novelty. The dependence of agrochemical indicators of sod-podzolic soil and crop productivity on the use of multipurpose compost in individual agromicrolandscapes has been established.



Author(s):  
V. T. Sinegovskaya ◽  
E. T. Naumchenko

The article presents the results of comparative evaluation of the efficiency of the long-term application of mineral and organic fertilizers in the crop rotation system. It was found that the application of the mineral fertilizer system increased the value of hydrolytic acidity of the soil from 4,30 to 5,29 mg-eq per 100 g of soil, the indicator of metabolic acidity decreased from 5,2 to 4,9 pH units. By the end of the 11th rotation for both fertilizer systems, the content of mobile phosphorus increased by more than 4 times relative to the initial value, its mobility indicator – by 2,2-3,2 times compared with the control. The use of the organo-mineral system was accompanied by an increase in the content of humus by 0,35 % and a decrease in the C:N ratio from 11,2 to 8,9. The increased productivity of wheat was revealed when applying nitrogen and nitrogen-phosphorus fertilizers against the background of prolonged use of the mineral and organo-mineral fertilizer system. The change in wheat productivity by 56 % depended on the content of mineral nitrogen, mobile phosphorus, humus in the topsoil, and on the phosphate ion mobility. Soybean productivity depended on soil fertility indicators only by 24 %: the relationship between soybean productivity and the mineral forms of nitrogen and phosphorus is weak and direct, between productivity and P2O5 mobility - weak and inverse, with humus - moderate and direct.



2015 ◽  
Vol 33 (1) ◽  
pp. 20-28 ◽  
Author(s):  
Juan De la Cruz Jiménez ◽  
Juan Andrés Cardoso ◽  
David Arango-Londoño ◽  
Gerhard Fischer ◽  
Idupulapati Rao

As a consequence of global warming, rainfall is expected to increase in several regions around the world. This, together with poor soil drainage, will result in waterlogged soil conditions. <em>Brachiaria</em> grasses are widely sown in the tropics and, these grasses confront seasonal waterlogged conditions. Several studies have indicated that an increase in nutrient availability could reduce the negative impact of waterlogging. Therefore, an outdoor study was conducted to evaluate the responses of two <em>Brachiaria</em> sp. grasses with contrasting tolerances to waterlogging, <em>B. ruziziensis </em>(sensitive) and <em>B. humidicola</em> (tolerant), with two soil fertility levels. The genotypes were grown with two different soil fertilization levels (high and low) and under well-drained or waterlogged soil conditions for 15 days. The biomass production, chlorophyll content, photosynthetic efficiency, and macro- (N, P, K, Ca, Mg and S) and micronutrient (Fe, Mn, Cu, Zn and B) contents in the shoot tissue were determined. Significant differences in the nutrient content of the genotypes and treatments were found. An increase of redoximorphic elements (Fe and Mn) in the soil solution occurred with the waterlogging. The greater tolerance of <em>B. humidicola</em> to waterlogged conditions might be due to an efficient root system that is able to acquire nutrients (N, P, K) and potentially exclude phytotoxic elements (Fe and Mn) under waterlogged conditions.  A high nutrient availability in the waterlogged soils did not result in an improved tolerance for <em>B. ruziziensis</em>. The greater growth impairment seen in the <em>B. ruziziensis</em> with high soil fertility and waterlogging (as opposed to low soil fertility and waterlogging) was possibly due to an increased concentration of redoximorphic elements under these conditions.





Forests ◽  
2020 ◽  
Vol 11 (8) ◽  
pp. 870
Author(s):  
Masazumi Kayama

Soil erosion after harvesting of forest plantations can create infertile colluvial soil, therefore, seedlings used for site reforestation should be equipped against nutrient-poor edaphic conditions. The oak genus is a suitable candidate for such reforestation efforts. Oak is an ectomycorrhizal (ECM) tree genus known to grow under infertile environments. In this study, the initial stage of tree growth in three species of oak seedlings inoculated with a spore suspension of ECM fungus was monitored to evaluate the acceleration of seedling growth and nutrient uptake. I selected Quercus acuta Thunb., Quercus glauca Thunb., and Quercus salicina Blume, as these are common, evergreen, broad-leaved woody species commonly found in Southwestern Japan. The seedlings were inoculated with Boletus reticulatus and planted in infertile colluvial soils collected from a site that had undergone soil erosion. I also compared the ecophysiological characteristics of the potted seedlings planted in colluvial soil and normal forest soil. After six months of cultivation, Q. glauca with the ECM showed the highest growth rate in the fertile forest soil and had leaves with a higher nutrient content. In contrast, root dry mass increased slightly in Q. acuta and Q. salicina planted in colluvial soil. In all species, the seedling’s ECM colonization rate in colluvial soil was lower than that in forest soil, yet the increase in nutrient uptake in the former was not obvious. The contents of K and Ca in the roots of Q. acuta and Q. salicina increased with B. reticulatus infection. I concluded that the inoculation with a B. reticulatus spore suspension effectively accelerated the growths in all three Quercus species. Q. glauca favored a fertile environment, and Q. acuta and Q. salicina suitably acclimated to both soil types. Thus, these species were selected as potential future candidates for reforestation in such eroded sites.



1956 ◽  
Vol 48 (10) ◽  
pp. 455-459 ◽  
Author(s):  
B. G. Ellis ◽  
C. J. Knauss ◽  
F. W. Smith


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