Application of plant growth regulators as a method for realization the production potential of table grapes in the conditions of Pridnestrovie

Изучено влияние физиологически активных веществ Гиббереллина, Циркона и Эпин-экстра на механический состав грозди, урожайность и содержание сахаров в соке ягод трех столовых сортов винограда в условиях Приднестровья. Определено влияние физиологически активных веществ на изменение массы грозди, количества ягод в грозди и урожайности в зависимости от метеорологических условий года. Установлено, что в более влажных условиях 2019 г. (ГТК = 1,0) увеличение массы грозди в опытных вариантах в сравнении с контрольными растениями составило на сорте Золотой Дон 24,5-43,5%; на сорте Велика - 48,4-81,0%. В менее влагообеспеченном 2020 г. (ГТК = 0,6) это превышение было на уровне - 53,3-110,3% и 17,7-41,7% соответственно. Увеличение массы грозди у сортов винограда в вариантах с обработкой регуляторами роста растений наблюдается преимущественно вследствие повышения количества ягод. Выявлено, что двукратная обработка растений физиологически активными веществами приводит к значительному снижению ягодного показателя и росту показателя строения грозди винограда. Оптимальным вариантом двукратной обработки растений сортов столового направления использованиия являются: для сорта Золотой Дон - Циркон, 0,6 мл/л; для сорта Велика - Эпин-экстра, 3,2 мл/л, в более увлажненных условиях 2019 г., что позволило повысить урожайность кустов на 46,7 и 81,1% соответственно. В засушливых условиях 2020 г. обработка сорта Золотой Дон препаратом Эпин-экстра в концентрации 3,2 мл/л и сорта Велика Цирконом, 0,6 мл/л, была наиболее эффективной, увеличив урожайность в 1,5-2,0 раза по сравнению с контролем. The effect of plant growth regulators Gibberellin, Zircon and Epin-extra on mechanical composition of the bunch, cropping capacity and sugar content in the juice of berries of three table grape varieties in the conditions of Pridnestrovie was studied. The influence of physiologically active substances on changes in the bunch weight, number of berries per bunch and cropping capacity depending on the meteorological conditions of the year was determined. It was found that in the more humid conditions of 2019 (HTC of 1.0), the bunch weight increase in experimental variants in comparison with the control plants was from 24.5% to 43.5% in ‘Zolotoy Don’ grape variety, and from 48.4% to 81.0% in ‘Velika’ grape variety. In the less moisture-rich 2020 (HTC of 0.6) this exceeding was at the level of 53.3%-110.3% and 17.7%-41.7%, respectively. An increase in the bunch weight of grape varieties treated with plant growth regulators is mainly observed due to an increase in the number of berries. It was found that two-fold treatment of plants with physiologically active substances leads to a significant decrease in the berry index and an increase in the index of grape bunch structure. The best variant for two-fold treatment of plants is Zircon, 0.6 ml/l, - for ‘Zolotoy Don’ variety; Epin-extra, 3.2 ml/l, - for ‘Velika’ grape variety in more humid conditions of 2019, resulting in the increase in cropping capacity of bushes by 46,7% and 81.1%, respectively. In the arid conditions of 2020, the treatment of ‘ Zolotoy Don’ variety with Epin-extra at a concentration of 3.2 ml/l and ‘Velika’ variety with Zircon, 0.6 ml/l, was the most effective, increasing the yield by 1.5-2.0 times compared to the control.

Effect of Breeding Heavier Romney Ewe Lambs at Seven Months of Age on Lamb Production and Efficiency over Their First Three Breeding Seasons

This experiment examined the effect of breeding heavier ewe lambs on lamb production and their efficiency over their first three breeding seasons. Two groups of ewe lambs were bred at seven months of age at an average pre-breeding live weight of either 47.9 ± 0.36 kg (heavy; n = 135) or 44.9 ± 0.49 kg (control; n = 135). Ewe live weight, number of lambs born and weaned, and lamb live weight were recorded until 39 months of age, and efficiency was calculated for each ewe. Although the number and lamb weaning weight did not differ between treatments over three years, when data were pooled, heavier ewe lambs at breeding weaned a greater number of lambs over the three-year period. The total lamb weaning weight over the three-year period increased by 2% for each additional kilogram at ewe lamb breeding. Breeding heavier ewe lambs had no effect on efficiency. These results suggest that although breeding heavier ewe lambs had a positive effect on lamb production over the three-year period, it had no effect on efficiency. Before final recommendations can be made, lifetime performance and longevity to five years of age of heavier ewe lambs at breeding are required.

Interprofessional Continuous Glucose Monitoring for Underserved Adults with Type 2 Diabetes on Insulin or Secretagogues

Background: Literature describing continuous glucose monitoring for underserved patients, including those with type 2 diabetes or at risk for hypoglycemia, is lacking. Methods: An interprofessional internal medicine residency team implemented a blinded CGM service for underserved adults with type 2 diabetes with at-goal glycated hemoglobin (A1C) taking insulin or secretagogues. Results: The 2-week blinded CGM service (N=44) significantly reduced time in hypoglycemia (<70 mg/dL) by 4.1% (P=0.0038). Time-in-target-range increased significantly (4.31%, P=0.025). Body weight, number of medications, and daily insulin dose decreased significantly. Overall, A1C remained stable, indicating no worsening of diabetes control associated with the service. Conclusions: The interprofessional blinded CGM service influenced improved glycemic control in this vulnerable population.

Identification of Pyrrolizidine Alkaloids in Senecio Plants by Liquid Chromatography-Mass Spectrometry

Pyrrolizidine alkaloids (PAs) are considered as the major constituents that cause hepatoxicity in Senecio plants. PAs can be found in about 3%–5% of the world’s flowering plants. Nowadays, the identification method of PAs by separation and preparation was too slow and lacked effective power. A rapid method to identify PAs in plants must be developed. Based on the fragmentation regularity, the hepatoxic PAs and nonhepatoxic PAs were characterized by liquid chromatography-mass spectrometry (LC-MS). The detailed structures of PAs in five Senecio plants were identified based on tandem mass spectrometry (MS/MS) spectrum and chemical research information. In the present study, some new fragmentation regularities of PAs have been found, such as product ions at m/z 122, m/z 140 and m/z 124, m/z 142, which have been discovered as the characteristic fragments of lactone and mono-esterase type of saturated PAs, respectively. Moreover, two product ions at m/z 120 and m/z 138 have been reported as the characteristic fragments of unsaturated PAs. Some of them were found in Senecio species for the first time, and some of them may be new nature product or even new compound. Finally, we classified these plants into five categories based on PAs which were identified in the present study; the result corresponded with the classification by morphology. In addition, we have found some constituents that have odd molecular weight number only in Senecio species but not in Ligularia species; the detailed structures of these non-PAs constituents need penetrating study. LC-MS was rapid and sensitive method for detecting and identifying PAs in plants. Pyrrolizidine alkaloids were the toxiferous constituent of Senecio plants. In this study, we found that PAs can be used as the characteristic constituent of Senecio species.

Response of Gazania Plants (Gazania Splendens L.) to Seaweed Extract (Tecamin Algae) and Nano Stimulator (Proteck CalBor)

The study was conducted in the lath house of the Department of the Horticulture and Landscape - College of Agriculture during the growing season of 2020-2021 inGazania plants, in order to study the effect of ground addition of marine algae extract (Tecamin Algae) at concentrations (0, 2 and 4 ml L-1), symbolized by (A0, A1 and A2) respectively, and spraying with the nanostimulator (Proteck CalBor) manufactured according to nanotechnology in concentrations (0, 0.5 and 1 ml L-1) and it has a symbol (B0, B1 and B2). The results showed that the treatments of adding the extract (Tecamin Algae), especially at concentration A2 (4 ml L-1) contributed to achieving the best results for all vegetative and flowering growth traits (plant height, number of leaves, vegetative dry weight, number of offsprings, leaf content of chlorophyll, total carbohydrates content of leaves, number of flowers, flower fresh weight, flower diameter, flower peduncle length), they were (13.65 cm, 34.64 leaf plant-1, 6.38 g, 7.72 offspring plant-1, 10.94 mg g-1, 7.44%, 5.56 flower plant-1, 2.26 g, 6.08 cm and 9.75 cm), respectively. A Spraying with nano stimulator (Proteck CalBor) achieved significant effect, especially B2 (1 ml L-1) concentration, that gave the highest values for the traits (plant height, vegetative dry weight, number of off springs, leaf content of chlorophyll, total carbohydrates content of leaves, number of flowers, flower fresh weight and flower diameter), they were (13.38 cm, 6.47 g, 7.48 offspring plant-1, 10.61 mg g-1, 7.49%, 5.40 flower plant-1, 2.41 g and 6.40 cm), respectively.

The Effect of Fertilizer Treatment on the Morphology of Maize (Zea mays) Planted in An Intercropping System in the Immature Oil Palm Plantation

Applying and optimizing an intercropping system between oil palm and seasonal crops such as maize in the immature palm oil plantation is one way of obtaining additional income for farmers until the main crop (oil palm) mature and ready to harvest. The aim of the research was to determine the effects of fertilizers, particularly nitrogen (N) and potassium (K) on the growth and production of maize in an intercropping system with oil palm. The experiment, using one-factor randomized complete block design, was conducted at the Cikabayan Experimental Station, IPB University, Indonesia, from August to December 2020. Four set-ups were prepared corresponding to four different fertilizer applications as follows: A0 (without treatment), A1 (240 g Urea + 80 g KCl + 320 g SP-36 per plot), A2 (480 g Urea + 160 g KCl + 320 g SP-36 per plot), A3 (720 g Urea + 240 g KCl + 320 g SP-36 per plot). Applying the highest dosages of N and K (A3), significantly increased plant height, fresh weight, number of leaves, leaf area, stem diameter, cob length, cob weight, and husk-free cob weight. Intercropping maize with immature oil palm did not affect the oil palm growth.

Agronomic and Economic Analysis of Brown top Millet under Varying Sowing Dates and Nitrogen Fertility Levels

Aim: The experiment is aimed to identify ideal sowing date and nitrogen level in browntop millet during rainy season on alfisols of Telangana. Study Design: Randomized Block Design with factorial concept and replicated thrice. Place and Duration of Study: College Farm, Professor Jayashankar Telangana State Agricultural University, Rajendranagar, Hyderabad, Telangana State, India during rainy season, 2019. Methodology: Browntop millet variety VZM-1 was tested under four dates of sowing viz., D1- June 15th, D2- June 30th, D3-July 15th and D4 - 30th July and four N levels viz; N1- 0 kg ha-1 N2 - 20 kg ha-1, N1- 40 kg ha-1 and N4-60 kg ha-1. The growth parameters, yield attributes, yield, nitrogen uptake at different crop growth stages and monetary returns were studied. Results: The results indicated that plant height, tillers hill-1, leaf area, dry matter accumulation at all crop intervals and yield attributes viz; effective tillers, panicle length, panicle weight, number of grains, grain, straw yield, N uptake at different crop stages and monetary returns were highest with sowing on D1- June 15th.Among the N levels tested, crop fertilized with 40 kg N ha-1 registered higher plant height, tillers hill-1, leaf area, dry matter accumulation at all crop intervals, yield attributes viz; effective tillers, panicle length, panicle weight, number of grains, grain, straw yield N uptake at different crop stages and monetary returns. Conclusion: On alfisols of Telangana during rainy season, sowing of browntop millet on June 15th fertilized with 40 kg N ha-1 helps to realize higher yield and monetary returns.

Ovipositor sources for queen-rearing of honey bee (Apis mellifera) revealed inheritable maternal effect on reared queen

Queen is arguably the most important member of a honey bee colony, and queen quality is crucial for honey bee colony growth and development. In this study, queens were reared with eggs laid in queen cells (QE), eggs laid in worker cells (WE) and 2-day old larvae in worker cells (L). Those physiological indexes (the weight, thorax size and number of ovarioles) of newly reared queens in each group were measured. Moreover, the reproductive potential of the newly reared queens and foraging ability of worker bees laid by the newly reared queens in each group were further explored. In addition, we also examined whether maternal effects would be transmitted to the offspring queens in honey bee. We found that the weight, number of ovarioles and thorax weight of newly emerged queens in QE were significantly higher than those in WE and L, suggesting the reproductive potential was stronger in QE group than WE and L group. Furthermore, offspring worker bees and queens of QE queens had higher weight at emergence than those from the other two groups. This study proved profound honey bee maternal effects on queen quality, which can be transmitted to their offspring. Our results of the present study were important for improving queen quality and promoting the development of beekeeping and agriculture.

Performance Test of Three Supporting Media during Outdoor Hydroponic Farming of Onion

This study used different supporting media (poly-styrene sheet, sand, and gravel) during outdoor hydroponic farming of onion within a natural environment setup. Domestic onion variety Taherpuri was taken as a model onion plant. As for performance parameters, plant height, number and length of leaf, length of root, bulb weight, number of bulblet, and chlorophyll contents were recorded. The number of produced leaves was almost same, although the length of leaf and root was found to have variations in these three supporting media. The yield (weight of bulb and number of bulblet) performance was slightly higher in polystyrene sheets (7.74 g and 3 bulblets per plant) than in the others. Chlorophyll-a, Chlorophyll-b, and total chlorophylls were comparatively higher in polystyrene sheets, 0.530, 0.764, and 1.294 mg/g respectively. Other growth parameters also showed better results in the case of polystyrene sheets. Finally, the results suggested that the polystyrene sheet as a hydroponic floating bed is suitable for outdoor hydroponics for onion cultivation.

Genetic Investigation in Segregating Generation of Brinjal (Solanum melongena L.)

The genetic variability studies indicated that the prevalence of sufficient genetic variation among the genotypes for all the characters. The high Genotypic co-efficient of variation and Phenotypic co-efficient of variation were observed for the number of primary branches and number of fruits per plant. High heritability coupled with high Genetic Advance as per cent of Mean was observed for plant height, number of primary branches, plant spread from North to South, plant spread from East to West, fruit length, fruit diameter, average fruit weight, number of fruits per plant, fruit yield per plant and Total Soluble Solids indicating that these characters are governed by additive gene action. Hence, direct selection may be followed for the improvement of brinjal by assessing these characters.