scholarly journals State and Crop Performance of Gossypium in the Salyan Steppe of Azerbaijan

2021 ◽  
Vol 7 (10) ◽  
pp. 65-71
Author(s):  
S. Talibi
Keyword(s):  
Mineral Nutrition ◽  
Root Systems ◽  
The State ◽  
Irrigation Regimes ◽  
Crop Performance ◽  
Development Phases

The article presents the results of observations of Gossypium crop performance by development phases. The issues of the development of cotton under different irrigation regimes and levels of mineral nutrition, the state of the aboveground and root systems of the plant on sierozem-meadow soils of the Salyan steppe are considered.

Monitoring the Condition of Mineral Nutrition of Crops Using UAV for Rational Use of Fertilizers

2019 ◽  
pp. 293-319 ◽  
Author(s):  
Dmytro Sergiyovich Komarchuk ◽  
Vitalii Pylypovych Lysenko ◽  
Oleksii Oleksandrovych Opryshko ◽  
Nataliia Anatoliivna Pasichnyk
Keyword(s):  
Mineral Nutrition ◽  
Metrological Support ◽  
Digital Camera ◽  
The State ◽  
Infrared Range ◽  
Agricultural Crops ◽  
Optical Range ◽  
State Monitoring ◽  
Rational Use ◽  
Official Data

The reviewed problem deals with the metrological support of sensory equipment using cameras with standard and infrared lenses. The elaborated method to use UAVs for remote shooting of agricultural crops and obtaining images is to be used to determine the level of nitrogen provision for grain crops has been developed. For radiofrequency correction of lighting changes while mineral nutrition state monitoring, it is recommended to use a method with the application of official data to be calculated on the basis of camera's regular camera exposure meter measurements. It is advisable to use an infrared lens for monitoring the state of individual crops using digital non-specialized cameras instead of optical one. Exampling GoPro Hero 4 digital camera, it has been found that there are three channels to use IR lens which have the characteristics of fixing radiation either in the infrared range or in the red area of the optical range.

scholarly journals UTILIZING LANDSAT AND SENTINEL-2 TO REMOTELY MONITOR AND EVALUATE THE PERFORMANCE OF WINTER COVER CROPS THROUGHOUT MARYLAND

2020 ◽  
Vol XLII-3/W11 ◽  
pp. 125-130
Author(s):  
J. Peredo ◽  
C. Wayman ◽  
B. Whong ◽  
A. Thieme ◽  
L. R. Kline ◽  
...  
Keyword(s):  
Decision Support ◽  
Cover Crops ◽  
Cover Crop ◽  
Decision Support Tool ◽  
The State ◽  
Support Tool ◽  
Crop Performance ◽  
Winter Cover ◽  
Winter Cover Crops ◽  
Sentinel 2

Abstract. Winter cover crops have been shown to limit erosion and nutrient runoff from agricultural land. To promote their usage, the Maryland Department of Agriculture (MDA) subsidizes farmers who plant cover crops. Conventional verification of cover crop planting and analysis of subsequent crop performance requires on-the-ground fieldwork, which is costly and labor intensive. In partnership with the MDA, NASA's DEVELOP program utilized imagery from Landsat 5, Landsat 8, and the European Space Agency’s Sentinel-2 to create a decision support tool for satellite-based monitoring of cover crop performance throughout Maryland. Our teams created CCROP, an interactive graphical user interface, in Google Earth Engine which analyzes satellite imagery to calculate the normalized difference vegetation index (NDVI) of fields across the state. Linear regression models were applied to convert NDVI to estimates of crop biomass and percent green ground cover, with measure of fit (R2) values ranging from 0.4 to 0.7. These crop metrics were implemented into an interactive filtering tool within CCROP which allows users to examine cover crop performance based on a variety of growing parameters. CCROP also includes a time series analysis routine for examining the progression of NDVI throughout the spring to help determine farmer-induced termination dates of cover crops. With this decision support tool, the MDA can analyze the effectiveness of cover crops throughout the state with reduced need to manually spot-check enrolled production fields, and can identify variables influencing overall cover crop performance to optimize implementation of their winter cover crop program via adaptive management approaches.

Absorption of Water and 32P through Suberized and Unsuberized Roots of Loblolly Pine

1975 ◽  
Vol 5 (2) ◽  
pp. 229-235 ◽  
Author(s):  
Hsu-Ho Chung ◽  
Paul J. Kramer
Keyword(s):  
Nutrient Solution ◽  
Loblolly Pine ◽  
Mineral Nutrition ◽  
Woody Plants ◽  
Root Systems ◽  
Root Surface ◽  
P Uptake ◽  
Mineral Nutrients ◽  
Vacuum Pump ◽  
Root Segments

Measurements were made of the rate of intake of water and 32P through suberized and unsuberized roots and root segments from seedlings of Pinustaeda L. under a pressure gradient of 31 cm Hg (41 kPa), produced by use of a vacuum pump. Water and 32P intake through suberized root segments from seedlings in storage was only 11% of the intake through unsuberized segments from roots grown in nutrient solution. Water intake through entirely suberized root systems grown in nutrient solution was about 71% and 32P uptake about 58% of those through root systems grown in nutrient solution but with 40–50% of their surface unsuberized. Uptake of water and 32P through root segments and root systems grown in vermiculite was intermediate between that for seedlings grown in nutrient solution and that for dormant root systems. Removal of all unsuberized root surface reduced the total root surface by 42%, water uptake by 54%, and 32P uptake by 70% per seedling. These results indicate that absorption of water and mineral nutrients through suberized roots may play an important role in the water economy and mineral nutrition of woody plants.

scholarly journals Tomato productivity depending on mineral nutrition and irrigation regimes in the conditions of film greenhouses in the mountain zone of the KBR

2021 ◽  
Vol 262 ◽  
pp. 01032
Author(s):  
Zalim-Geri Shibzukhov ◽  
Artur Bagov ◽  
Zalina Shibzukhova ◽  
Martin Khantsev ◽  
Ilakhun Akbar
Keyword(s):  
Mineral Nutrition ◽  
Soil Moisture Content ◽  
Mineral Fertilizers ◽  
Vegetable Crops ◽  
Tomato Seedlings ◽  
Maximum Value ◽  
Irrigation Regimes ◽  
Favorable Conditions ◽  
Optimum Water ◽  
Selection Of

The limited irrigation areas in the KBR, as well as the lack of a clear technology for the cultivation of this crop in film greenhouses using irrigation regimes and mineral fertilizers strongly affect the development and production of early tomatoes. In this regard, our research was devoted to the cultivation of tomatoes under irrigation conditions with the selection of the optimum doses of mineral fertilizers in spring film greenhouses. In the KBR settlements, vegetable crops are mainly grown in film greenhouses, which have numerous advantages over block greenhouses, mainly due to the cheapness of production several times over. Tomato seedlings were planted on April 10. Analysis of the data showed that the duration of the growing season increases on variants with optimum water and nutrient regimes of the soil, which led to higher quality products. This created favorable conditions for greater productivity of tomato fruits. Studies showed that the number of fruits and their weight on one plant were maximum according to the variants of the experiment on soil moisture content of 80% of normal moisture. The maximum value was obtained with a dose of mineral nutrition N190P160K120.

scholarly journals Yield and Quality of Seeds of Wheat Varieties Tyumenskaya Jubilee and Tyumenochka Depending on the Level of Mineral Nutrition in the Northern Forest Steppe of the Tyumen Region

2019 ◽  
Author(s):  
Anastasia Kazak ◽  
Dmitry Yeremin ◽  
Yuri Loginov
Keyword(s):  
Mineral Nutrition ◽  
First Grade ◽  
The State ◽  
Mineral Fertilizers ◽  
Forest Steppe ◽  
Wheat Varieties ◽  
Northern Forest ◽  
Yield And Quality ◽  
Control Variant

The State Agrarian University of the Northern Trans-Urals continues to breed spring wheat. Two varieties of Tyumen Jubilee and Tyumenochka have been created with the use of various source materials, including sources to the main cultural diseases in the region. Tyumenskaya variety has passed the State Variety Testing and is included in the Register of breeding achievements in 10 regions. The second variety is in the State Variety Trial. Research is continuing on both varieties to develop seed varieties. The results of influence of different levels of mineral nutrition on yield and quality of seeds of wheat varieties are analyzed in this report. It is established that in the northern forest-steppe zone of the Tyumen region on the natural fertility of leached black soil the average seed yield for three years was for the variety Tyumenskaya jubilee 2.48 t/ha, for Tyumenochka – 2.08 t/ha. In the variant with application of mineral fertilizers to the planned yield of 4 t/ha, the first grade seed was obtained 3.29 t/ha, the second – 2.91. The additions to the control variant were 0.81 and 0.83 t/ha. When applying mineral fertilizers to the yield of 5 and 6 t/ha, the additions remained at the level of the previous version, except for the Tyumenochka variety in the last version. The yield of seeds from the total yield in the control variant was 75.5 % for the variety Tyumenskaya jubilee and 71.7 % for Tyumenochka. In the variant with NPK by 4 t/ha the yield of seeds increased by 4.2 % in the first grade and by 4.5 % in the second grade. Protein content in the seeds of wheat varieties on the natural soil fertility was 13.6 and 12.3 %, respectively. The maximum content of 16.0 and 14.8 % is noted in the variant with fertilizers for the planned yield of 4 t/ha. In the same variant the highest germination energy (82.3, 80.1 %) and germination of seeds (96.9 and 95.5 %) are higher than the control variant by 20.7, 15.6 and 1.8 %; 2.5 % accordingly. The main part of the seeds (71.0 and 68.1 %) of the studied wheat varieties in the mentioned variant grew with 5–6 germ roots that is 19.3 and 13.2 % higher than the control. The variant with fertilizers for the planned yield of 4 t/ha was more economically advantageous, the level of profitability of the variety Tyumenskaya jubilee was 49 %, and Tyumenochka 44 %.

scholarly journals Occurrence of Meloidogyne enterolobii in common bean in southern Goiás State, Brazil

2021 ◽  
Vol 51 (10) ◽  
Author(s):  
Rodrigo Vieira da Silva ◽  
José Orlando de Oliveira ◽  
José Humberto de Ávila Júnior ◽  
Brenda Ventura de Lima ◽  
Nádia Fernandes Moreira
Keyword(s):  
Phaseolus Vulgaris ◽  
Common Bean ◽  
Malate Dehydrogenase ◽  
Root Systems ◽  
Nematode Species ◽  
Root Surface ◽  
The State ◽  
Root Knot Nematode ◽  
Varying Thickness ◽  
Meloidogyne Enterolobii

ABSTRACT: Meloidogyne enterolobii is known as the most aggressive root-knot nematode (RKN) in Brazil. Common bean (Phaseolus vulgaris) cultivated in the experimental field in Morrinhos, Southern Goiás State, exhibited symptoms typical to those caused by RKN. In order to clarify the etiology of the disease, root systems were analyzed. Typical galls of varying thickness were observed, with thickening larger than 3 cm in diameter containing RKN females inside roots and egg masses on the root surface. The identification of the nematode species was confirmed by isoenzyme electrophoresis (esterase and malate dehydrogenase phenotypes). This is the first report of M. enterolobii in Goiás and in Brazil parasitizing common bean under field conditions. This result is an alert to producers and to the State phytosanitary defense authorities, in order to prevent the further dissemination of this pest, especially in fields of common bean and industrial tomato in the State.

Practical Picture Processing

1974 ◽  
Vol 32 ◽  
pp. 338-339
Author(s):  
T. A. Welton
Keyword(s):  
Radiation Damage ◽  
Coherence Length ◽  
Spatial Information ◽  
State Of The Art ◽  
Coherent Radiation ◽  
The State ◽  
Energy Spread ◽  
Electron Micrograph ◽  
Picture Processing ◽  
Molecular Skeleton

Various authors have emphasized the spatial information resident in an electron micrograph taken with adequately coherent radiation. In view of the completion of at least one such instrument, this opportunity is taken to summarize the state of the art of processing such micrographs. We use the usual symbols for the aberration coefficients, and supplement these with £ and 6 for the transverse coherence length and the fractional energy spread respectively. He also assume a weak, biologically interesting sample, with principal interest lying in the molecular skeleton remaining after obvious hydrogen loss and other radiation damage has occurred.

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