BASAL STERILITY OF WHEAT EARS - INDEX OF SENSITIVITY TO DELAYED SPRING FROZEN AND ITS RELATIONSHIP WITH YIELD AND PRODUCTIVITY ELEMENTS, IN THE CLIMATIC CONDITIONS OF 2020 YEAR AT ARDS CARACAL

The special climatic conditions manifested in the spring of 2020 at ARDS Caracal by the appearance of frosts delayed for 2 consecutive days, brought changes in the architecture of the wheat ear by the appearance of the phenomenon of basal sterility. For 200 wheat varieties of different origins (Romanian, French, Austrian, German, Swiss, mixed, hybrid wheat germplasm) the basal sterility manifested was determined at maturity. Ten ears of each variety / replication constituted the analyzed sample. Mixed germplasm (52 wheat varieties from all over Europe) had an basal sterility average rate of 11.4% - the lowest in the experiment. At the opposite pole was the German germplasm with an average percentage of 17.1%. The lowest amplitudes between the maximum and minimum valuesof basal sterility were recorded in hybrid wheat and Romanian germplasm (13.5-13.6%). The highest amplitude was recorded in the French germplasm – 19,1 %. The correlations performed highlighted the distinctly significant negative relationship between the basal sterility and the yield obtained; the significant positive relationship between yield and the note reflecting frost resistance; the significant negative relationship between the test weight and the days from 01.01 to heading date

WHERE ARE THE FOREIGN WHEAT CULTIVARS IN COMPETITION WITH THE ROMANIAN CULTIVARS? -EXPERIMENTS ON THE CHERNOZEM FROM CARACAL IN THE PERIOD 2019-2021

In the period 2019-2021, 131 cultivars of winter wheat were tested on the chernozem from Caracal in a network of within- and between-annual experiments (1-12 experiments located in 1-3 years). The study was performed only on the cultivars tested in at least 3 experiments (77 cultivars), grouped in 7 categories: Romanian cultivars (17), SYNGENTA cultivars (10), LIDEA cultivars (14), LG cultivars (7), AXEREAL cultivars (7), KWS cultivars (6), cultivars of various origins (16). Forty- four of the cultivars were tested in each of the 3 years studied, the average yields being between 10599 kg / ha for the Anapurna cultivar and 6793 kg / ha for the Bezostaia cultivar. In the top 15 were the Romanian cultivars Biharia (9843 kg / ha), Miranda (9701 kg / ha) and Abundent (9630 kg / ha)

FOLIAR FERTILIZATION - AN INTEGRAL PART OF COMPLEX AND INTEGRATED FERTILIZATIONS – A REVIEW

In the context of demographic increase and climate change, the issue of ensuring food security is becoming increasingly important, which is why the use of chemical fertilizers in agriculture is the main means of increasing the quantity and quality of agricultural production. Alongside basic mineral (root) fertilization, which is indispensable, foliar fertilization is a measure of increase both in terms of yields and quality.  Foliar fertilizers provide a surplus of fertilizing elements, especially secondary macroelements and microelements, which allows plants to thrive under optimal conditions and to resist stress factors. Foliar fertilization has become a widespread management tool in directing the nutrition of crop plants, and is often a complementary part of fertilization systems or even seen as an alternative to root fertilization. When applied correctly, foliar fertilization has an interesting potential to manipulate the yield and quality of agricultural production, with low environmental impact and relatively low costs. This review aims to highlight the importance of foliar fertilization for agricultural crops, based on experimental results from the literature, using the platforms Google Scholar and Web of Science for documentation

A BRIEF REVIEW ON THE INFLUENCE OF FLAG LEAF ON CEREALS PRODUCTION

Production in cereal crops is due to some complex physiological and biochemical processes, but is essentially associated with the process of carbohydrate accumulation in the grain filling phase which in turn is attributed to leaf functionalities. A critical stage in the development of wheat plants is the emergence of the final leaf called the flag leaf.  At this point the emphasis of management needs to shift to its protection as the flag leaf is critical for attaining high grain yields. Unlike other leaves in the reproductive phase, flag leaves are the main organ for photosynthesis, providing the main assimilated source for plant growth and spike development and also for sensing environmental conditions conducive to adaptation. This short review aims to analyse some of the most important results from the specialized literature regarding the influence of the flag leaf on cereal production. The main documentation platforms were Google Scholar and Web of Science. The importance of the flag leaf in generating yield in grains is without dispute. Protecting the flag leaf is critical to attaining high yields. The vigil starts as soon as growers are able to recognize when the flag begins to emerge

STUDY ON THE MANIFESTATION OF EQUILIBRIUM CAPACITY IN SYNDROM DOWN ATHLETES PRACTINCING JUDO

Equilibrium capacity is an important component of motor guidance. An objective balance assessment for judo-practicing lower-grade athletes was achieved through the Y-Balance (Functional Movement, 2016) platform, a dynamic test executed on a foot or a hand requiring strength, flexibility, central control and proprioception. Six athletes, Judoka Bears team members, with a 3-year competitive experience participated in this study. They practice judo as a therapy in recovery activities for people with this syndrome starting with the end of 2014. The aim of the research is to assess the ability to manifest the dynamic balance for Down syndrome judo practicing athletes, knowing that they are characterized by poor coordination of body segment movements and poorly developed motor skills. The objective is to establish the level of balance-of-mind capacity for mentally deficient people, and the influence of judo on them. Depending on upper limbs and lower limbs, the study revealed, according to the correlation matrix, that the strongest variables of the total number of variables are for the upper right limb with antero-medial displacement (0.882429 factorial saturation), followed by the upper right limb with lateral displacement, whose factorial saturation is 0,868248, and the lower right leg with postero-medial displacement with a saturation level of 0,825715

STUDY ON THE USE OF PLIOMETRIC EXERCISES IN THE SPECIFIC

The concept of the method used for this application and carried out on a sample of Taekwondo athletes is trying to identify the adequate solution by simultaneously considering two criteria: the attribute of significance of the motricity investigation and the feature of practicality – in the sense of achieving an acceptable level of reliability and adequacy of the data while using a noninvasive device, which is also as less obtrusive as possible to the subjects. The study was conducted on 8 students, members of the taekwondo (TKD) team, of the Carol Davila University of Medicine and Pharmacy, with a competitive experience of 10 to 12 years. The Jump Pliometry assessment in anaerobic effort was performed using the Myotest PRO device. Two tests were performed, an initial one to determine the stadium level for jump pliometry, and a final test to determine the level of progress. The main objectives pursued by this test are: to measure the contractile and inter-muscular muscle coordination in the lower limbs and the values provided information on the quality of the jump that influences the sport performance. As a conclusion, by applying a centralized training program including pliometric exercises even in the specific part, significant changes in expansion, contact time, response and distribution of the load can be generated in the lower limbs

Covid-19 pandemic and quality of life among Romanian athletes

The aim of this study was to analyze athletes’ quality of life during the COVID-19 pandemic. The study involved 249 athletes between 15 and 35 of age, M = 21.22, SD = 5.12. The sample was composed of eight Olympic Games medalists, three European medalists, 67 international medalists, and 63 national medalists. The instruments used were: (1) COVID-19 Anxiety Scale, (2) Athlete Quality of Life Scale, (3) Impact of Pandemic on Athletes Questionnaire, and (4) International Personality Item Pool (IPIP Anxiety, Depression, and Vulnerability Scales). The results indicate significant differences in COVID-19 anxiety depending on the sport practiced, F (9239) = 3.81, p < 0.01, showing that there were significant differences between sports. The negative impact of the COVID-19 pandemic mediates the relationship between trait anxiety and the athletes’ quality of life. The percentage of mediation was 33.9%, and the indirect effect was −0.11, CI 95% (−0.18, −0.03), Z = −2.82, p < 0.01. Trait anxiety has an increasing effect on the intensity of the negative impact of the COVID-19 pandemic, 0.23, CI 95% (.10, 0.35), Z = 3.56, p < 0.01, and the negative impact of the COVID-19 pandemic has a decreasing effect on quality of life, −0.47, CI 95% (−0.67, −0.27), Z = −4.62, p < 0.01. Gender and age did not moderate the relationship between the negative impact of COVID-19 and athletes’ quality of life. The results of the study highlighted the impact that social isolation and quarantine have on athletes’ affective well-being