scholarly journals Changes in the root mass and yield of rice depending on different water and food regimes drip irrigation in the lower Volga region

2020 ◽  
pp. 38-41
Author(s):  
Konstantin Anatolyevich Rodin ◽  
Ainagul Bekbaevna Nevezhina ◽  
Viktor Bisengalievich Narushev
Keyword(s):  
Drip Irrigation ◽  
Water Regime ◽  
Research Field ◽  
Root Mass ◽  
Subsequent Increase ◽  
Lower Volga Region ◽  
Food Regimes ◽  
Research Material ◽  
Influence Of Water

The article reflects some results of long-term research conducted in 2013-2015 at the research field of VNIIOZ. After analyzing the research material, the following results were obtained on the influence of water or nutrient regimes of the soil on the formation of the mass of rice roots during drip irrigation. So, when maintaining the water regime of the soil 100-80% MWHC in the 0.6 m layer, the root mass was 4.96 m in the 0.4 m layer and 5.64 t/ha in the 0.6 m layer. In the variant where the soil moisture was maintained at 100-80% MWHC in this variant, the aboveground part of the plants was more developed, which contributed to an increase in the root mass of rice in the 0.4 m layer to 5.40, and in the 0.6 m layer – 6.14 t / ha. In the variant of the water regime of the soil with a humidity of 100-80% MWHC from sowing to the end of the tillering phase in the 0.4 m layer with subsequent increase to 0.6 m, and from waxy to full ripeness of the grain is not less than 70% MWHC, the number of roots in comparison with the second option for three years in the 0.4 m layer was less by 0.18 t/ha, and in the 0.6 – 0.20 t/ha layer, but more than the first in the 0.4 m layer by 0.26 and 0.6 m – 0.30 t/ha. The applied doses of fertilizers had a greater impact on the root system of rice than the water regime of the soil. As a result of the research, it was found that the maximum grain yield (6.95 t / ha) was obtained under the water regime of the soil 100-80% MWHC sequentially in layers of 0.4 and 0.6 m with the introduction of N137P90K108 (7 t/ha). The lowest yield, 4.88 t / ha, was obtained in the variant of the water regime of the soil 100-80% MWHC in a layer of 0.6 m with the addition of N95P62K75 (5 t / ha).

scholarly journals Evaluation of the cucumber gene pool of the VIR collection on precocity and fruiting period under the conditions of the Lower Volga region

2020 ◽  
pp. 16-21
Author(s):  
T. M. Piskunova ◽  
E. Kh. Sukhanberdina
Keyword(s):  
Gene Pool ◽  
Relative Resistance ◽  
Term Study ◽  
Lower Volga Region ◽  
Long Term Study ◽  
Research Material ◽  
World Collection ◽  
The World ◽  
Early Ripening

Relevance. In connection with the annual epiphytotic development of peronosporosis (Pseudoperonospora cubensis (Berk. and Curt.) Rostow. on cucumber and the absence varieties immune to this disease, it is advisable to create and cultivate precocious varieties and hybrids that can form the main part of the yield before the period of mass spread of the disease. In order to rationally use the cucumber gene pool long-term research of the world collection is carried out to search of sources of yield, precocity and resistance to peronosporosis.Material and methods. The studies were conducted at Volgograd Experimental Station of VIR (Volgograd province). The research material was 370 cucumber accessions from the world collection of VIR. Evaluation of accessions on a complex of signs was carried out according to methodical guidelines of VIR.Results and conclusions. Long-term study of cucumber accessions of various geographical origin showed that the duration of the interphase period "mass seedlings - the first harvest of fruits" did not differ significantly in samples of different geographical groups, most of them belong to the early ripening. It was found that the duration of the fruiting period depended on the degree of resistance of plants to peronosporosis: the higher the resistance of the variety or hybrid, the longer the fruiting period. A number of precocious, yielding hybrids and varieties, as well as samples with a long period of fruiting and relative resistance to peronosporosis, were allocated. The perspective material for the decision of separate problems in breeding of a cucumber is recommended.

scholarly journals Management of the water regime of soil to increase the vegetable crops yield with different irrigation methods in the south of Russia

2021 ◽  
Vol 282 ◽  
pp. 05001
Author(s):  
Evgeny Khodiakov ◽  
Askar Akhmedov ◽  
Evgeny Borovoy ◽  
Sergey Milovanov ◽  
Kirill Bondarenko
Keyword(s):  
Drip Irrigation ◽  
Water Regime ◽  
Mineral Fertilizers ◽  
Vegetable Crops ◽  
Irrigation Regime ◽  
Moisture Capacity ◽  
Irrigation Network ◽  
Volgograd Region ◽  
Crops Yield

Long-term researches on the cultivation of vegetable crops with different methods of irrigation in the Volgograd region have shown that their yield was primarily closely related to the improvement of the water regime of the soil. Its efficiency using drip irrigation increased with the introduction of mineral fertilizers, and using subsurface irrigation - with an improvement of the location of the irrigation network. The highest yield of beet with drip irrigation (82.4 t / ha) was obtained with an increase of the Soil Pre-Irrigation Moisture (SPIM) to 85% of Full Moisture Capacity (FMC) and fertilization doses - to N235P140K130 kg/ha. The highest yield of courgettes with drip irrigation of 83.7 t / ha was obtained while maintaining the similar irrigation regime and the quantity of fertilizers N240P99K110 kg/ha.The maximum cabbage yield in our experience with drip irrigation of 83.1 t / ha was achieved using the option that combines the maintenance of the irrigation regime 80-90-80 %FMC with the application of fertilizers at doses of N110P50K140 kg / ha. The highest yield of radish with subsurface irrigation of 79.8 t / ha was obtained while maintaining SPIM 85 % FMC in the field with the location of subsurface humidifiers at a distance of 1.2 m from each other.

scholarly journals The impact of anthropogenically -controlled factors on the formation of root mass and yield of rice under drip irrigation in the lower volga region

2019 ◽  
pp. 41-43
Author(s):  
I. P. Kruzhilin ◽  
N. N. Dubenok ◽  
M. A. Ganiev ◽  
K. A. Rodin ◽  
A. B. Nevezhina
Keyword(s):  
Root System ◽  
Water Regime ◽  
Maximum Yield ◽  
Great Influence ◽  
Root Weight ◽  
Aerobic Rice ◽  
Root Mass ◽  
Influence Of Water ◽  
Soil Wetting ◽  
The Impact

The results of studies on the influence of water or nutrient regimes of the soil on the formation of the root system of rice when watering drip system. Thus, while maintaining the water regime of the soil not less than 80% of HB in the 0.6 m layer, the root mass was in the three years in the 0.4 m layer 4.96, and 0.6 m - 5.64 t/ha. In the variant where soil moisture was maintained at least 80% HB and the depth of soil wetting until the end of the tillering phase by 0.4 with a further decrease to 0.6 m, the plants differed in maximum foliage and habitus, which contributed to an increase in the root mass of aerobic rice in the layer of 0.4 m to 5.40, and in the layer of 0.6 m 6.14 t/ha. In the variant of the water regime of the soil with a moisture content of not less than 80% HB from sowing to the end of the tillering phase in a layer of 0.4 m, followed by a decrease to 0.6 m, and from wax to full ripeness of grain not less than 70% HB the volume of roots compared to the second option for three years in a layer of 0.4 m became less by 0.18 t/ha, and in a layer of 0.6 0.20 t/ha, but more than the first in a layer of 0.4 m by 0.26 m and 0.6 m 0.30 t/ha. Also had a great influence on the root system of aerobic rice. Thus, its lowest value, 5.46 t/ha for the three years, was formed when making N95P62K75 (5 t/ha). Making N114P74K90 (6 t/ha) increased root weight by 0.48 t/ha regarding the N95P62K75 dose (5 t/ha), but was below making N137P90K108 (7 t/ha) 0.60 t/ha. In the result of the conducted researches it was established that maximum yield of grain (of 6.95 t/ha) was obtained in variant water regime of soil 80% of NV in layers of 0.4 and 0.6 m, making N137P90K108 (7 t/ha). The minimum yield, 4.88 t/ha, was obtained in the variant of soil water regime of 80% of NV in a layer of 0.6 m with the introduction of N95P62K75 (5 t/ha).

The Impact of Anthropogenically-Controlled Factors on the Formation of Root Mass and Rice Yield under Drip Irrigation in the Lower Volga Region

2019 ◽  
Vol 45 (6) ◽  
pp. 561-564
Author(s):  
I. P. Kruzhilin ◽  
N. N. Doubenok ◽  
M. A. Ganiev ◽  
K. A. Rodin ◽  
A. B. Nevezhina
Keyword(s):  
Drip Irrigation ◽  
Rice Yield ◽  
Volga Region ◽  
Root Mass ◽  
Lower Volga Region ◽  
Lower Volga ◽  
The Impact

The Influence of Water Regime on the Performance of Aquatic Plants

1994 ◽  
Vol 29 (4) ◽  
pp. 127-132 ◽  
Author(s):  
Naomi Rea ◽  
George G. Ganf
Keyword(s):  
Deep Water ◽  
Aquatic Plants ◽  
Water Regime ◽  
Optimal Performance ◽  
Experimental Results ◽  
The Other ◽  
Full Potential ◽  
Influence Of Water ◽  
Emergent Species

Experimental results demonstrate bow small differences in depth and water regime have a significant affect on the accumulation and allocation of nutrients and biomass. Because the performance of aquatic plants depends on these factors, an understanding of their influence is essential to ensure that systems function at their full potential. The responses differed for two emergent species, indicating that within this morphological category, optimal performance will fall at different locations across a depth or water regime gradient. The performance of one species was unaffected by growth in mixture, whereas the other performed better in deep water and worse in shallow.

scholarly journals Influence of water regime on grape aromatic composition of Muscat of Alexandria in a semiarid climate

2021 ◽  
Vol 290 ◽  
pp. 110525
Author(s):  
Ignacio Buesa ◽  
Diego S. Intrigliolo ◽  
Juan R. Castel ◽  
Mar Vilanova
Keyword(s):  
Water Regime ◽  
Semiarid Climate ◽  
Influence Of Water

scholarly journals The evolving definition of salivary gland stem cells

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Cecilia Rocchi ◽  
Lara Barazzuol ◽  
Rob P. Coppes
Keyword(s):  
Stem Cells ◽  
Salivary Gland ◽  
Adult Stem Cell ◽  
Cell Types ◽  
Research Field ◽  
New Therapeutic Approaches ◽  
Recent Developments ◽  
Radiation Induced ◽  
Definition Of

AbstractDysfunction of the salivary gland and irreversible hyposalivation are the main side effects of radiotherapy treatment for head and neck cancer leading to a drastic decrease of the quality of life of the patients. Approaches aimed at regenerating damaged salivary glands have been proposed as means to provide long-term restoration of tissue function in the affected patients. In studies to elucidate salivary gland regenerative mechanisms, more and more evidence suggests that salivary gland stem/progenitor cell behavior, like many other adult tissues, does not follow that of the hard-wired professional stem cells of the hematopoietic system. In this review, we provide evidence showing that several cell types within the salivary gland epithelium can serve as stem/progenitor-like cells. While these cell populations seem to function mostly as lineage-restricted progenitors during homeostasis, we indicate that upon damage specific plasticity mechanisms might be activated to take part in regeneration of the tissue. In light of these insights, we provide an overview of how recent developments in the adult stem cell research field are changing our thinking of the definition of salivary gland stem cells and their potential plasticity upon damage. These new perspectives may have important implications on the development of new therapeutic approaches to rescue radiation-induced hyposalivation.

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