Crops and Cropping Sequences for Harnessing Productivity Potential of Sodic Soils

2017 ◽  
pp. 53-70 ◽  
Author(s):  
Y. P. Singh
Keyword(s):  
Sodic Soils ◽  
Productivity Potential

EFFECT OF FLY ASH ON CROP YIELD AND PHYSICO-CHEMICAL, MICROBIAL AND ENZYME ACTIVITIES OF SODIC SOILS

2016 ◽  
Vol 15 (11) ◽  
pp. 2433-2440 ◽  
Author(s):  
Kripal Singh ◽  
Vimal Chandra Pandey ◽  
Bajrang Singh ◽  
Dharani D. Patra ◽  
Rana P. Singh
Keyword(s):  
Fly Ash ◽  
Crop Yield ◽  
Enzyme Activities ◽  
Sodic Soils ◽  
Physico Chemical

FEATURES OF THE PRODUCTION PROCESS OF ANCIENT AND MODERN VARIETIES OF WINTER RYE

1970 ◽  
pp. 15-19
Author(s):  
A. A. Torop ◽  
V. V. Chaykin ◽  
E. A. Torop ◽  
I. S. Brailova ◽  
S. A. Kuzmenko
Keyword(s):  
Production Process ◽  
Dry Matter ◽  
Leaf Surface ◽  
Unit Area ◽  
Biomass Accumulation ◽  
Vegetation Period ◽  
Winter Rye ◽  
Total Chlorophyll ◽  
Potential Productivity ◽  
Productivity Potential

We compared peculiarities of the production process of the older and modern(created 80 years after) sorts of winter rye. It is determined that the specific coenotic productivity of a modern sort is 60.6% higher.This increase is due to higher number of productive sprouts per unit area and higher sprout weight. The coenosis of modern sorts is highly resistant to lodging. The modern sort has a 33.5% higher leaf surface index and a 17.7% higher share of the leaves in the upper tier, differing in their erectile orientation in space. As for the content of total chlorophyll in the dry matter of leaves and vagina, the modern sort is inferior to the older by 30.2%during theearing period, and by 17.5%during the milky-wax ripeness period.As for the content of total chlorophyll in the sowing area, the compared sorts were practically the same, but the ratio between chlorophyll a and c was noticeably different. As for the chlorophyll content in stems, in dry matter and in the area of ​​sowing, the modern sort is inferior by1.5 times and more to the older in both observation terms. The sorts differed in the biomass accumulation and its distribution between the parts during the vegetation period. To establish the ear productivity, the older sort used only the current photosynthesis products.In conditions of an unfavorable growth year, the modern sort used previously accumulated by leaves and re-utilized assimilates. The actual and potential productivity of an ear in a modern sort is higher by 77.4 and 68.0%, respectively, but the degree of its vegetative mass supply is lower by 48.6%.Only due to the higher, by 77.4%, utilization of the mass of the sprout, the modern sort binds a greater number of grains in the ear with a higherseparate mass.Since the sharp increase in the ear productivity potential was not accompanied by the same growth of the sprout vegetative mass, the modern sort, in unfavorable conditions for growth, has tensions in the relation system between the sprout vegetative mass and pouring grain. This may be the reason of the unstable achievedyield level.

CHANGES IN THE GENEALOGICAL STRUCTURE OF THE BREEDING STOCK OF THE YAROSLAVL BREED IN THE VOLOGDA REGION

2020 ◽  
pp. 24-29
Author(s):  
N.I. ABRAMOVA ◽  
G.S. VLASOVA ◽  
O.L. KHROMOVA
Keyword(s):  
Protein Content ◽  
Negative Impact ◽  
Breeding Stock ◽  
Holstein Breed ◽  
Vologda Region ◽  
Ideal Line ◽  
Productivity Potential ◽  
New Generation ◽  
Modern Population ◽  
Positive Effect

Проведен сопоставительный анализ генеалогической структуры племенного поголовья ярославской породы Вологодской области по данным 2005 и 2018 годов. Установлено, что в 2005 году в структуру породы входили 8 отечественных генеалогических линий. В результате скрещивания с голштинской породой произошли значительные изменения. Доля животных, принадлежащих к линиям ярославской породы, уменьшилась со 100% в 2005 году до 35,3% в 2018 году. В генеалогическую структуру современной популяции добавились 3 линии голштинской селекции, к которым на 1.01.2019 года относится большая часть маточного поголовья: к линии Рефлекшн Соверинга 198998 — 42,9%, Вис Бэк Айдиала 1013415 — 13%, Монтвик Чифтейна 95679 — 8,8%. Скрещивание с голштинской породой оказало положительное влияние на повышение молочной продуктивности животных ярославской породы. Средний надой на 1 корову увеличился на 1670 кг молока, доля коров с продуктивностью более 6000 кг молока выросла на 35%. В результате расчета корреляционной зависимости между кровностью по голштинской породе и массовой долей жира и белка в молоке установлено, что скрещивание не ухудшило качественные показатели молока коров ярославской породы (степень кровности с МДЖ — r=-0,01; с МДБ — r=0,09; P<0,01), но в то же время отразилось отрицательно на продолжительности хозяйственного использования животных в стаде (r=-0,27; P<0,001). Для дальнейшего совершенствования породы следует определить оптимальную степень прилития крови голштинской породы. А с целью сохранения генофонда необходимо получение нового поколения чистопородных быков ярославской породы с более высоким потенциалом продуктивности. The authors conduct a comparative analysis of the genealogical structure of the breeding stock of the Yaroslavl breed in the Vologda region on the basis of the data for 2005 and 2018. It is established that in 2005 the structure of the breed included 8 domestic genealogical lines. As a result of the crossing with the Holstein breed, significant changes occurred. The share of animals of the Yaroslavl breed lines decreased from 100% in 2005 to 35.3% in 2018. The genealogical structure of the modern population got 3 added lines of the Holstein selection which as of 1.01.2019 include most of the breeding stock: Reflection Sovering line 198998 - 42.9%, Vis Back Ideal line 1013415 - 13%, and Montwick Chieftain line 95679 - 8.8%. The crossing with the Holstein breed had a positive effect on the increase in the milk productivity of the Yaroslavl breed animals. The average milk yield per 1 cow increased by 1670 kg of milk and the share of cows with the productivity of more than 6000 kg of milk increased by 35%. The results of the calculations of the correlation between the Holstein thoroughbredness and the fat and protein content in the milk showed that the crossing did not impair the quality indicators of the milk the Yaroslavl breed cows (thoroughbredness degree with the fat content r=-0.01; with the protein content r=0.09 P<0.01), but at the same time had a negative impact on the duration of the economic use of the animals in the herd (r=-0.27; P<0.001). For further improvement of the breed, there is a need to determine the optimal degree of crossing with the Holstein breed. Also, in order to preserve the gene pool, there is a need to obtain a new generation of purebred bulls of the Yaroslavl breed with a higher productivity potential.

scholarly journals A Comprehensive Coal Reservoir Classification Method Base on Permeability Dynamic Change and Its Application

Energies ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 644 ◽  
Author(s):  
Xinlu Yan ◽  
Songhang Zhang ◽  
Shuheng Tang ◽  
Zhongcheng Li ◽  
Yongxiang Yi ◽  
...  
Keyword(s):  
Coalbed Methane ◽  
Dynamic Change ◽  
Initial Permeability ◽  
Gas Production ◽  
Gas Desorption ◽  
Reservoir Permeability ◽  
Geological Conditions ◽  
Production Stages ◽  
Productivity Potential ◽  
Coal Reservoir

Due to the unique adsorption and desorption characteristics of coal, coal reservoir permeability changes dynamically during coalbed methane (CBM) development. Coal reservoirs can be classified using a permeability dynamic characterization in different production stages. In the single-phase water flow stage, four demarcating pressures are defined based on the damage from the effective stress on reservoir permeability. Coal reservoirs are classified into vulnerable, alleviative, and invulnerable reservoirs. In the gas desorption stage, two demarcating pressures are used to quantitatively characterize the recovery properties of permeability based on the recovery effect of the matrix shrinkage on permeability, namely the rebound pressure (the pressure corresponding to the lowest permeability) and recovery pressure (the pressure when permeability returns to initial permeability). Coal reservoirs are further classified into recoverable and unrecoverable reservoirs. The physical properties and influencing factors of these demarcating pressures are analyzed. Twenty-six wells from the Shizhuangnan Block in the southern Qinshui Basin of China were examined as a case study, showing that there is a significant correspondence between coal reservoir types and CBM well gas production. This study is helpful for identifying geological conditions of coal reservoirs as well as the productivity potential of CBM wells.

Growth, Oil Yield, and Ion Partitioning in Basil Grown on Sodic Soils

2008 ◽  
Vol 39 (5-6) ◽  
pp. 833-844 ◽  
Author(s):  
A. K. Nayak ◽  
R. K. Gautam ◽  
D. K. Sharma ◽  
V. K. Mishra ◽  
C. S. Singh ◽  
...  
Keyword(s):  
Oil Yield ◽  
Sodic Soils ◽  
Ion Partitioning

Response of soils properties and archaea community to saline-sodic soils under long-term rice-based cropping system

2021 ◽  
pp. 1-17
Author(s):  
Xuejun Du ◽  
Shunyi Wang ◽  
Zijun Xu ◽  
Jin Liu ◽  
Zideng Gao ◽  
...  
Keyword(s):  
Cropping System ◽  
Sodic Soils ◽  
Archaea Community

Improving effect of potassium in organic amendments on sodic soils

2021 ◽  
pp. 1-8
Author(s):  
Limin Tong ◽  
Fu Fan ◽  
Akira Watanabe
Keyword(s):  
Organic Amendments ◽  
Sodic Soils
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