Quality and Optimal Shelf Life of Late Season Green Cabbage

Introduction. Green cabbage has a short shelf life. As a result, it becomes scarce by March and April, often due to miscalculated sell-by-date. The research objective was to establish qualitative indicators and optimal shelf life of late season green cabbage. Study objects and methods. The study featured eleven late season varieties of green cabbage grown in alluvial meadow soil using N150P150K180 as fertilizer. The samples (25 cabbage heads) were put in layers into wooden containers with a capacity of 200–250 kg each and stored at 0...+1°C and a relative humidity of 90–95% for 7 months. By the end of storage, the samples were tested for the yield of marketable products, weight loss, diseases, etc. Results and discussion. The highest yield belonged to Gertsoginya F1 (80.4%), Kilaton F1 (78.6%), and Beaumont Agro F1 (77.7%). The optimal shelf life did not exceed 5–6 months. The yield of commercial products depended on the solid matter content (r = 0.81) and, to a lesser degree, on the average content of ascorbic acid (r = 0.52), monosaccharides (r = 0.55), and nitrates (r = 0.55). The weight loss had a negative mean relationship with the content of solids (r = –0.55), ascorbic acid (r = –0.49), and nitrates (r = –0.59). Conclusion. The optimal shelf life for most varieties and hybrids of green cabbage proved to be 4–5 months, whereas for Beau Monde Agro F1, Gertsoginya F1, Idilliya F1, and Kilaton F1, it was 5–6 months. Further research might reveal hybrids with longer shelf life.

Soil inoculum identity and rate jointly steer microbiomes and plant communities in the field

The importance of soil inoculation to engineer soil microbiomes and ultimately entire ecosystems is becoming widely acknowledged. Inoculation with soil from different ecosystems can induce directional changes in soil and plant communities and promote the restoration of degraded ecosystems. However, it is unknown how such inoculations influence the soil microbiome, how much inoculum is needed, and whether inocula collected from similar ecosystems will steer the microbiome in different directions. We conducted a three-year soil inoculation field experiment at a degraded grassland and used two different soil inocula both from grasslands with three inoculation rates. Our results show that inoculation with soil that originates from different donor grasslands steers the soil microbiome as well as the plant communities at the inoculated site which was a degraded grassland into different directions and that these effects were stronger with increasing amount of soil used to inoculate. Inoculation with upland meadow soil introduced more keystone genera and resulted in more complex biotic networks in the soil than inoculation with meadow steppe soil. Our experiment highlights that soil inoculation can steer soil microbiomes in the field and that the direction and speed of development depend on the origin and the amount of soil inoculum used.

INFLUENCE OF BROWN COAL ON AGROCHEMICAL PROPERTIES OF IRRIGATED MEADOW SOIL

Мақолада суғориладиган ўтлоқи тупроқларнинг агрокимёвий таркибига қўнғир кўмир ва минерал ўғитлар таъсири ўрганилган бўлиб, ғўза экилган майдонларда тупроқ унумдорлиги ва ғўза ҳосилдорлигини ортиши исботланган.

On the Study of the Humus State of Meadow Brown Soils

The studies carried out and the results obtained on the humus state of meadow brown soils are fully consistent with the literature. The change in the humus content in the soils of the meadow soil formation process depends on the effect of surface and ground moisture on humus formation. Studies have revealed that the humus content in meadow brown soils decreases gradually and relatively evenly with depth. For meadow soils with a meadow process of soil formation, there is a general tendency for a decrease in humus from the upper horizons to the lower ones.

Effect of organic fertilizers on yield and quality indicators of cotton and sorghum plant against mineral fertilizer background

In order to study the influence of organic fertilizers against the background of minerals on the yield and quality of cotton and sorghum, experiments were laid under the conditions of gray-meadow soil of the Shirvan zone. As a result of the studies, it was found that the highest crop was obtained in versions where biohumus and mineral fertilizers were co-introduced. So in these versions, the cotton crop is 12.9 c/ha or 66.1%, and the sorghum crop is 8.5 c/ha or 42.5%, respectively, compared to a control without fertilizers. Key words: organic fertilizers, mineral fertilizers, cotton, sorghum, productivity

Soil microbiome from postmining ecosystems from Kabardino-Balkaria, Russia

<p>The soil microbiome is critical to the restoration of soils , destroyed by human activity. The dynamics of changes in the soil microbiome was investigated from the two overgrown gravel-sand quarry dumps in the North Caucasus (Kabardino-Balkaria, Russia). Samples were taken in the quarries of contrasting soil types (Calcareous Chernozem and Umbric Gleyic soils) under the various types of reclamation. Samples were taken from 10 points from a quarry with meadow soil and from 11 points from the Chernozem. The 16S ssu gene libraries were sequenced from soil DNA.The difference in microbiomes between the control points and the points where the soil is restored was statistically significant. The disturbed Gleyic soil is characterized by an increase in the representatives of Acidobacteria, for Chernozem of the genera <em>Niastella</em>, <em>Ramlibacter</em>, <em>Microvirga</em>. On the Umbric  Gleyic soil without reclamation, significant heterogeneity was shown, in contrast to Chernozem with different types of reclamation. In different soil types, the response of the soil microbiome to soil restoration was significantly different, which in turn should influence the choice of the strategy for the restoration of anthropogenically diturbed soils.</p>