The yield and feed capacity of alfalfa varieties in the conditions of the West Kazakhstan region

The purpose of the research is to conduct the comparative assessment of variable alfalfa varieties and to identify the most productive and adapted varieties to the conditions of the region with a view to their further zoning. The results of research on the study of alfalfa varieties – Karabalykskaya 18, Rambler, Ural’skaya sinyaya, Semirechenskaya mestnaya, Krasnovodopadskaya 8 are presented in this article. Data of the seed germination and plant preservation by years of life, yield and forage capacity of crops are given. Methods: field and calculation (to determine the feed capacity). Results. In the 2011 crops, according to the field germination, the variety of Karabalykskaya 18 (45.8 %) and Semirechenskaya mestnaya (42.8 %) were distinguished. According to 4-year data, the highest percentage of preservation in the variety of Karabalykskaya 18 (14.2 %) and Ural’skaya sinyaya (13.9 %). And the smallest number of preserved plants was noted in the alfalfa variety of Krasnovodopadskaya 8, it is amounted to 10.4 %. The crops produced more mass shoots in next year, due to somewhat high rates of spring precipitation and air temperature. And in terms of the percentage of preservation, the 2012 crops surpassed the previous ones. Thus, in the variety of Karabalykskaya 18 and Rambler, this indicator was equal to 15.1 % and 13.7 %, and in the zoned variety Ural’skaya sinyaya, 15.7 % of the herbage was preserved. The data of green mass yield determination and hay shows that three of the four varieties evaluated were exceed to the standard variety from 1.6 to 8.5 per 1 ha for the collection of green mass and from 0.2 to 2.4 c/ha for the hay harvest. In terms of feed capacity, the highest indicators are in the Karabalykskaya variety 18, and the lowest – in Krasnovodopadskaya 8. So, at the 5th year of life (sowing 2011), 48 cattles can be fed on 10 ha of crops of the first variety for a month, and the second – 41. On the grass stands of the zoned Ural’skaya sinyaya variety, the content of 43 cattles are permissible.

Application methods of biostimulants affect the production and postharvest conservation of yellow melon

Worldwide, Brazil holds the fifth position in melon fruits exportation, further expanding its products to provide for the growing demand. This expansion is the result of the development and application of new technologies, including the management of the use of biostimulants. However, for melon crops, the information in the literature on the use of biostimulants remains limited to the effects of different doses on fruit quality at the time of harvest. Therefore, this study aimed to evaluate the influence of different methods of pre-harvest application of two biostimulants on the production and postharvest conservation of fruits of yellow melon cv. Iracema. The treatments consisted of a combination of three factors: two plant biostimulants (Crop Set® and Spray Dunger®), two application methods of the products (fertigation and spraying), and five times of postharvest storage (0, 14, 21, 28 and 35 days). An additional control treatment corresponded to plants without biostimulant application. The fruits were evaluated for production and physicochemical attributes: average mass, yield, flesh firmness, titratable acidity, soluble solids content, SSC/TA ratio, pH, total soluble sugars, and weight loss. Fertigation is the recommended application method of biostimulants for yellow melon due to its effect on the increase of average mass, yield, flesh firmness, soluble solids content, and total soluble sugars of the fruits in relation to the spraying method.

Effect of Biomass-Based Catalyst in Walnut Shell/Polypropylene to BTX

Four biomass-based catalyst carriers with different pore structures were prepared by using a carbonization-activation method, followed by employment in the copyrolysis of Walnut Shell/Polypropylene (WNS/PP) to produce Benzene, Toluene and Xylene (BTX). Ten cycles were performed in each copyrolysis test in a bench-scaled tube furnace to determine the suitable pore size of the catalyst and excellent cycling performance for BTX production. In addition, Zn, Ni, and Ce were loaded with the selected catalyst carriers to synthesize the most suitable biomass-based catalyst. Results showed that the pore size and active center of the catalyst were the key factors affecting the WNS/PP catalytic copyrolysis. Biomass-based carrier with a pore size in the range of 0.55-1.2 nm was the most suitable to produce BTX in the optimal 10 cycle performance; it realized a relative BTX content of 9-20 area%, and a BTX mass yield of 23-67 mg/(graw) in the liquid-phase products from the WNS/PP copyrolysis. A catalyst loaded with 10 wt% Zn possessed the best catalytic effect with a relative BTX content of 39.49 area%, and a BTX yield of 111.13 mg/(graw)

Promising genotypes of eastern goat’s rue in the North-West region of the Russian Federation

По урожайности зелёной массы сортообразец F6 превысил контроль на 40%, а по сбору сырого протеина — на 45%. По урожайности зелёной массы сортообразец F6 превысил контроль на 40%, а по сбору сырого протеина — на 45%. Bioclimatic potential of the Pskov region provides high-quality seeds of almost all species of gramineous and some species of legumes. The primary role in forage production belongs to sown grasses both in fields (182.8 thousand hectares) and in grasslands (natural hayfields (230 thousand hectares) and pastures (244 thousand hectares). New varieties of perennial grasses cultivated using modern practices are promising means to increase yield and quality of forage resources. Breeding new varieties of eastern goat’s rue was carried out during 2018–2021 at the nurseries of the Federal Research Center of Fibre Crops. The test nursery was established in 2018 using promising genotypes selected earlier in the intercross nursery (F6, F7 и F8) and clone nursery (26-2-8, 27-1-14 and 27-2-15). The variety “Yubilyar” (the Pskov Agricultural Research Institute) performed as the standard. The test nursery selected genotypes having the number of valuable morphological and economically-important traits. Genotypes were evaluated according to their morphology, green mass and seed productivity as well as forage quality. Such genotypes as F6, F7 and F8 stood out due to their height, seed productivity, forage mass yield and quality. Genotype F6 exceeded the standard by 40% in green mass yield and 45% — in crude protein content.

MOLECULAR GENODIAGNOSTICS OF PRODUCER BULLS BY ECONOMICALLY VALUABLE CHARACTERISTICS

Based on the results of the analysis of the relationship between the DGAT1 gene polymorphism and economically valuable traits, it was concluded that animals with the DGAT1KK genotype have the highest milk yield and fat content. When analyzing the relationship of CSN3 gene polymorphism with milk productivity, it was found that higher rates are characteristic of mothers cows with a homozygous CSN3BB genotype. Animals of this group have an advantage, in comparison with the AB and AA genotypes, in milk yield, protein content, mass yield of fat and protein. When studying the data of the relationship between the LGB gene polymorphism and economically valuable traits, it was concluded that animals with the homozygous LGBBB genotype have the highest milk yield, fat, protein content, mass fat and protein yield.