scholarly journals Application of biostimulants influences shoot and root characteristics of seedlings of winter pea (Pisum sativum L.)

2019 ◽  
Vol 72 (2) ◽  
Author(s):  
Agnieszka Klimek-Kopyra ◽  
Angelika Kliszcz ◽  
Anna Ślizowska ◽  
Dominika Kot
Keyword(s):  
Weather Conditions ◽  
Seedling Development ◽  
Effective Solution ◽  
Root Characteristics ◽  
Previous Crop ◽  
Pisum Sativum L ◽  
Short Internodes ◽  
Developmental Characteristics ◽  
Measured Length ◽  
Late Sowing

In the cooler regions of Europe, the success of winter pea cultivation depends strongly on proper plant development before winter. Previous research has suggested that plants need to develop short internodes and at least their first two leaves before the arrival of frost. However, this stage of growth is sometimes not reached in the event of late sowing, due to factors such as unpredictable weather conditions or the delayed harvest of a previous crop. An effective solution may be the application of plant growth regulators before the sowing of seeds. The aim of this study was to assess the seedling developmental characteristics of winter pea dependent on biostimulator applications in low temperature conditions (4°C). Seven different winter pea cultivars were treated with three biostimulants: Asahi SL, Kelpak SL, and Primus B. After 21 days of seedling development, basic biometrical characteristics were measured (length and weight of shoots and roots). It was found that ‘Enduro’ and ‘Aviron’ showed greatest root development, regardless of the applied biostimulants. The highest germination was achieved by ‘Aviron’. The efficiency of biostimulators on the cultivars tested was low, although slightly better results were found for Asahi SL in combination with ‘Enduro’ and ‘Aviron’.

Development of subsea tie-backs in challenging environments

2014 ◽  
Vol 54 (2) ◽  
pp. 540
Author(s):  
Gregor Couper ◽  
Sina Roshan-Zamir ◽  
John Rickman ◽  
Chris Lee
Keyword(s):  
Cost Effective ◽  
Weather Conditions ◽  
Severe Weather ◽  
Short Length ◽  
Effective Solution ◽  
Established Method ◽  
Constraint Factors ◽  
Successful Execution ◽  
Stage Process

Tie-backs to existing facilities are a long established method of expanding developments, as they often offer a cost-effective solution. For short length tie-backs located in regions that are remote and/or subject to severe weather conditions, however, the feasibility of installation can become a significant constraint. Factors such as high mobilisation cost of pipelay vessels and conditions that make pipeline towing impractical limit the potential design solutions. Defining these constraints early in the project is critical to successful execution. This extended abstract explores the challenges faced when developing such a tie-back by considering a case study of Origin Energy’s Geographe development, located in the Otway Basin. The location and harsh weather conditions constrained the viable installation options, which shaped the design. A flexible flowline was selected because it could be installed from a wider range of vessels and in a less limiting weather window. Subsea coolers are located at the wells for control of top of line (TOL) corrosion and to protect the flexible flowline from exposure to overly high temperatures. The cooler design brings its own challenges, requiring a two-stage process. First, modelling of the production fluid is used to determine the cooling requirements; then, CFD is used to design the cooler piping and structure to achieve this. A design with multiple, smaller structures was used to maximise the number of capable installation vessels. This extended abstract discusses the constraints that can occur, how the design must accommodate them, and the implications on execution of the project.

Yield, quality and nitrogen fertilizer recovery of standard and semi-dwarf spring wheat as affected by sowing date and fertilizer rate

1979 ◽  
Vol 93 (1) ◽  
pp. 87-93 ◽  
Author(s):  
J. Alessi ◽  
J. F. Power ◽  
L. D. Sibbitt
Keyword(s):  
Spring Wheat ◽  
Nitrogen Fertilizer ◽  
Protein Concentration ◽  
Weather Conditions ◽  
N Recovery ◽  
Fertilizer N ◽  
Grain Yields ◽  
Fertilizer Recovery ◽  
Dwarf Wheat ◽  
Late Sowing

SUMMARYBecause of environmental and economic constraints, we need to determine the effects of nitrogen fertilizer application on nutrient availability and fertilizer recovery, especially in regions of limited rainfall. This study was conducted to provide information on effects of N rate on yields and N recovery by standard and semi-dwarf spring wheats (Triticum aestivum L.) sown at two dates.Ammonium nitrate was applied to spring wheat at rates up to 272 kg N/ha each year for 4 consecutive years. Only grain was removed from the plot at harvest. Wheat types did not differ in grain yields, but these yields were significantly reduced in 2 of 4 years by late sowing. Average grain yields for late sowing were greatest at 34 kg N/ha, but yields for early sowing approached maximum at the 68 kg N for semi-dwarf wheat and 136 kg N/ha for the standard wheat.Semi-dwarf wheat was lower than standard wheat in grain and flour protein concentration and baking absorption. Late sowing (May 30) reduced test weights, flour yield and baking absorption, but increased wheat protein concentration as compared with early sowing (April 30). Leaching of fertilizer N below the 90 cm depth ranged from 152 to 378 kg/ha at the 272 kg N/ha/year rate, and was greater for the late than for the early sowing. Fertilizer N that could be accounted for averaged 87 and 82% for early and late seeding respectively. Water-use efficiency was reduced by late sowing.Soil-water extraction by wheat to the 120 cm depth was greater for high N rates.These 4-year results showed that semi-dwarf and standard wheats had only slight differences in total grain production. Also, for efficient use of applied fertilizer and available soil water, wheat should be sown in the spring as soon as soil and weather conditions permit.

scholarly journals The effect of the previous crop and differentiated fertilisation on yields and content of N-substances in spring barley grain

2009 ◽  
Vol 57 (5) ◽  
pp. 141-148
Author(s):  
Luděk Hřivna ◽  
Rostislav Richter ◽  
Pavel Ryant ◽  
Michal Příkopa
Keyword(s):  
Chemical Composition ◽  
Sugar Beet ◽  
Strong Correlation ◽  
Dry Matter ◽  
Spring Barley ◽  
Weather Conditions ◽  
Barley Grain ◽  
Grain Yields ◽  
Previous Crop ◽  
Small Plot

In small-plot experiments established in 2001–2004 we studied the effect of the chemical composition of the plant dry matter of spring barley, varieties Kompakt and Jersey, on grain yields. A re­la­ti­ve­ly strong correlation was confirmed between the chemical composition of the plant dry matter and yields. The correlation was most intensive in the case of nitrogen (r = 0.536), phosphorus (r = 0.503), magnesium (r = 0.464) and sulphur (r = 0.431) at the beginning of shooting (DC 30); in the case of potassium (r = 0.557) at the beginning of tillering (DC 23) and calcium (r = 0.530) during ear formation (DC 55). A relatively strong correlation remained from the beginning of tillering to the beginning of ear formation and later decreased. The weather conditions of the year and variety significantly affected grain yields and also the previous crop was important. Grain yields of the variety Kompakt were statistically significantly lower than of the variety Jersey (6.02 t . ha−1 and 6.45 t . ha−1, respectively). The yields of barley grown after sugar-beet were the highest (6.30–6.79 t . ha−1); the grain yields of barley after maize decreased by 9.1–9.7 %. Higher grain yields of the Jersey variety resulted in levels of ­N-substances (11.35 %) lower than in the Kompakt variety (11.35 % and 11.60 %, resp.). No correlation was discovered between the nitrogen level in the plant dry matter during vegetation and the content of ­N-substances in barley grain.

Screening the pea collection for breeding feed varieties

2021 ◽  
pp. 30-34
Author(s):  
Е.В. Кожухова ◽  
Л.П. Байкалова
Keyword(s):  
Pisum Sativum ◽  
Weather Conditions ◽  
Forest Steppe ◽  
Mass Yield ◽  
Lodging Resistance ◽  
High Productivity ◽  
Green Mass ◽  
Pisum Sativum L ◽  
Grain Productivity ◽  
Green Mass Yield

Исследования проводились в лесостепи Восточной Сибири в 2018–2019 годах. Для создания сортов гороха (Pisum sativum L.) с высокой кормовой продуктивностью необходимо включать в селекционный процесс листочковые формы вместо более технологичных усатых сортов. Цель исследования — анализ коллекции гороха листочкового морфотипа для селекции на кормовые цели. Материалом для исследования послужили 20 образцов гороха листочкового морфотипа. Образцы оценивали по укосной и зерновой продуктивности. Погодные условия в годы проведения исследований отличались от среднемноголетних значений: 2018 год был очень засушливым (ГТК — 0,60), 2019 год — засушливым (ГТК — 0,89). Урожайность зависела от биологических особенностей сорта и погодных условий годов исследований. Следует отметить высокую продуктивность сорта гороха полевого Интенсивный 92: в оба года он попал в верхнюю часть ранжированного списка, превысив стандарт. В среднем по урожайности зелёной массы сорт Интенсивный 92 превосходил стандарт Радомир на 3,40 т/га, по урожайности семян — сорт Орпела на 0,10 т/га. Рентабельность производства зелёной массы сорта Интенсивный 92 оказалась на 53,7% выше стандарта. По рентабельности производства зерна сорт Орпела превысил стандарт на 8,8%. Выделены источники важных хозяйственных признаков: для селекции на увеличение урожайности семян — горох полевой Орпела; урожайности зелёной массы — сорта Апостол и Интенсивный 92; в качестве источника семенной продуктивности растений — сорта Тюменский кормовой, Шал, Орпела; устойчивости к полеганию — Альбенс и Орпела; устойчивости к аскохитозу и тле — Clause и Id 29200910. The investigation took place in the forest-steppe of the Eastern Siberia in 2018–2019. To create pea (Pisum sativum L.) varieties with high feed productivity, it is necessary to include leafy forms in a breeding process instead of leafless varieties suitable for machine harvesting. The research aimed at screening a collection of leafy peas for breeding feed varieties. 20 leafy varieties were analyzed according to their green mass and grain productivity. Weather conditions differed from the long-term average values: 2018 was very dry (hydrothermal index = 0.60), 2019 — dry (hydrothermal index = 0.89). Productivity depended on plant biology and meteorological conditions. Pea variety “Intensivny 92” showed high productivity ; it hit the top of the ranked list, exceeding the standard in both years. “Intensivny 92” exceeded the standard “Radomir” in green mass yield by 3.40 t ha-1 and“Orpela” — in grain productivity by 0.10 t ha-1. The profitability of green mass production of “Intensivny 92” was 53.7% higher than the standard. The profitability of “Orpela” grain production exceeded the standard by 8.8%. The sources of economically important traits were found: field pea “Orpela” — to increase grain yield; “Apostol” and “Intensivny 92” — for high green mass yield; “Tyumenskiy kormovoy”, “Shal”, “Orpela” — high seed productivity; “Albens” and “Orpela” — lodging resistance; Clause and Id 29200910 — resistance to Ascochyta leaf spot and aphids.

The effect of date of sowing on the growth and yield of spring cereals

1970 ◽  
Vol 75 (3) ◽  
pp. 553-557 ◽  
Author(s):  
R. S. Jessop ◽  
J. D. Ivins
Keyword(s):  
Leaf Area ◽  
Spring Wheat ◽  
Dry Matter ◽  
Spring Barley ◽  
Weather Conditions ◽  
Sowing Date ◽  
Growth And Yield ◽  
Spring Cereals ◽  
Late Sowing

SUMMARYExperiments to study the effect of date of sowing at two centres in each of 3 years, 1967–9, are described and the results discussed. The earliest sowing date (early March) gave the highest yield of spring barley at both centres and of spring wheat at Sutton Bonington, but at Boxworth in 1967 and 1969 later sowing (early or late April) gave higher yields of grain, which were attributable mainly to increased grain numbers per ear. It is argued that in 1968 poor weather conditions in July and August resulted in very low 1000 grain weights, and although grain numbers were again higher from late sowing at Boxworth this treatment gave the lowest yields because of poorly filled grain. The date of sowing also affected yields of total dry matter, ratios of grain to straw, leaf-area indices, numbers of grains per ear and 1000 grain weights.

scholarly journals The Most Important Fungal Diseases of Cereals—Problems and Possible Solutions

Agronomy ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 714
Author(s):  
Marcin Różewicz ◽  
Marta Wyzińska ◽  
Jerzy Grabiński
Keyword(s):  
Weather Conditions ◽  
Fungal Diseases ◽  
Soil Tillage ◽  
Previous Crop ◽  
Yield And Quality ◽  
Genetic Potential ◽  
Tillage System ◽  
Grain Yield And Quality ◽  
Cereal Yields

The level of cereal yields and the quality of these yields depend, to a large extent, on a crop management system, the genetic potential of a given cultivar, but also on factors that may cause damage to plants or a reduction in yield. Such factors include fungal diseases of cereals, which may cause a reduction in yield by 15–20%, and in extreme cases even by 60%. The main factors determining the occurrence of these pathogens are the weather conditions during the growing season of plants, crop rotation, the previous crop, the soil tillage system, and nitrogen fertilisation. Fungal diseases of cereals limit plant growth and development, as well as reduce grain yield and quality. This paper reviews the literature on fungal diseases of cereals.

scholarly journals Crop rotation as a factor differentiating the intensity of the diseases of field pea (Pisum sativum L.)

2013 ◽  
Vol 55 (1) ◽  
pp. 173-183 ◽  
Author(s):  
Tomasz P. Kurowski ◽  
Bożena Cwalina-Ambroziak ◽  
Tadeusz Sadowski
Keyword(s):  
Crop Rotation ◽  
Root Rot ◽  
Ascochyta Blight ◽  
Weather Conditions ◽  
Field Pea ◽  
Crop Rotations ◽  
Pathogenic Potential ◽  
Pisum Sativum L ◽  
Infected Root ◽  
Ascochyta Pisi

The research was conducted in the years 1998-2001. The aim of the research was to determine the health of the field pea cv. Kormoran grown in four various crop rotations and to determine the patogens causing the root-rot. On the pea plants the following diseases were found: root rot (complex of fungi), ascochyta blight (<em>Ascochyta pisi, Phoma pinodella, Mycospaerella pinodes</em>) and fusarium foot rot (<em>Fusarium</em> spp.). All the diseases occurred in the highest intensity on the pea cultivated in three-field crop rotation without manure. The weather conditions affected the intensity of the diseases. From the roots of seedlings with the symptoms of root rot 44,7% of fungi with pathogenic potential in relation to pea were obtained. The most commonly isolated were <em>Fusarium oxysporum</em> (26,7% of all isolates), <em>Rhizoctonia solani</em> (10,7%), <em>F.solani</em> (3,3%), <em>F.avenaceum</em> (2,7%) and <em>F.equiseti</em> (1,3%). From the infected root necks, 55,3% of potential pathogens of field pea were obtained. Among the isolates the most commonly found was <em>F.oxysporum</em> (31,1% of all isolates). Other fungi of the <em>Fusarium</em> genus constituted 15,4% of isolates, <em>R.solani</em> 7,0%, and <em>Sclerotinia sclerotiorum</em> 1,8%.

scholarly journals Changes in Pisum sativum L. Plants and in Soil as a Result of Application of Selected Foliar Fertilizers and Biostimulators

Agronomy ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1558
Author(s):  
Hanna Sulewska ◽  
Alicja Niewiadomska ◽  
Karolina Ratajczak ◽  
Anna Budka ◽  
Katarzyna Panasiewicz ◽  
...  
Keyword(s):  
Pisum Sativum ◽  
Weather Conditions ◽  
Fertilizer Treatment ◽  
Biochemical Activity ◽  
Pisum Sativum L ◽  
Close Relationship ◽  
Moisture Conditions ◽  
Biological Nitrogen ◽  
Positive Effect ◽  
Pea Seed

The aim of this study was to assess the effect of selected biostimulators and foliar fertilizers on plant development, plant yield, soil fertility and soil biochemical activity (dehydrogenases, phosphatases, catalases) during the cultivation of pea (Pisum sativum L.). A field experiment was conducted between 2016 and 2018 at the Gorzyń Experimental and Educational Station, Poznań University of Life Sciences in Poland. The following treatments were tested: (1) control; (2) Titanit; (3) Optysil; (4) Metalosate potassium; (5) Rooter; (6) Bolero Mo; (7) Adob Zn IDHA; (8) Adob B and (9) Adob 2.0 Mo. Adob Zn IDHA stimulated yields, especially under average moisture conditions and less so in drought conditions, and the differences compared to control amounted 8.36 and 4.3%, respectively. The results showed a close relationship between the effects of the biostimulators and foliar fertilizers and weather conditions during the study. It was not possible to determine whether any of the biostimulators or foliar fertilizers had a positive effect on pea seed yield in any year. Similarly, it was difficult to clearly determine the effect of the biostimulators and fertilizers on biochemical activity in the soil, although soil enzyme activity was influenced most by application of the Bolero Mo fertilizer. In all study years, biological nitrogen fixation was always greater after the application of a biostimulator/fertilizer treatment.

Crop rotations compared with continuous canola and wheat for crop production and fertilizer use over 6 yr

2018 ◽  
Vol 98 (5) ◽  
pp. 1139-1149 ◽  
Author(s):  
Kabal S. Gill
Keyword(s):  
Crop Production ◽  
Wheat Yield ◽  
Weather Conditions ◽  
Triticum Aestivum L ◽  
Continuous Cropping ◽  
Hordeum Vulgare L ◽  
Brassica Napus L ◽  
Fertilizer Use ◽  
Linum Usitatissimum L ◽  
Pisum Sativum L

Local economic, logistic, soil, and weather conditions have made appropriate rotations vary from one area to another. Seed yield and fertilizer use in rotations were compared with continuous cropping for 6 yr in the southeast Peace region of Alberta, Canada. Canola (C) (Brassica napus L.), wheat (W) (Triticum aestivum L.), pea (P) (Pisum sativum L.), barley (B) (Hordeum vulgare L.), and flax (F) (Linum usitatissimum L.) were grown in 12 treatments [i.e., continuous canola (CC) and wheat (WW) and rotations of W–C, P–W–W, C–W–W, C–C–W, P–C–W, C–P–W, W–B–C, B–W–C, F–W–C, and F–C–W]. Canola yield increased with 1 or 2 yr breaks from canola. Within rotations, there was a trend to lower canola yield on canola stubble compared with other crop stubbles. Wheat yield was generally lower in WW than in rotations. Among rotations, wheat yield tended to be greater on pea stubble compared with canola, wheat, barley, and flax stubbles. Averaged over 2010–2015, the canola yield benefit from rotations was 0.632 Mg ha−1 (19.4%) over CC and the wheat yield benefit from rotations was 0.313 Mg ha−1 (7.2%) over WW. Nitrogen saving was observed when pea was included in rotation.

scholarly journals The effect of water shortage on pea (Pisum sativum L.) productivity in relation to the pod position on the stem

2017 ◽  
Vol 70 (3) ◽  
Author(s):  
Agnieszka Klimek-Kopyra ◽  
Tadeusz Zając ◽  
Barbara Skowera ◽  
Norbert Styrc
Keyword(s):  
Pisum Sativum ◽  
Water Availability ◽  
Seed Mass ◽  
Weather Conditions ◽  
Water Shortage ◽  
Soil Drought ◽  
Growing Seasons ◽  
Pisum Sativum L ◽  
Favorable Weather ◽  
Number Of Seeds

The literature contains few studies on the effect of temporary soil drought on the development and productivity of pea (<em>Pisum sativum</em> L.) pods in relation to their position in the fruiting part of the stem. The aim of this study was to evaluate pod productivity of various pea cultivars in relation to varied weather conditions. Differences in precipitation during two growing seasons resulted in a decrease in yield of 0.62 t ha<sup>−1</sup> in a dry year in comparison to a year with better water availability. <em>Pisum sativum</em> ‘Tarchalska’ proved to be the most stable in terms of the number of pods produced, whilst ‘Prophet’ was the least. Weather conditions and cultivars were the determinants of pod production. Pea pods were distinguished by their position on the productive node. Larger and more productive pods were found on the lowest four productive nodes (which had a longer period of nutrient accumulation) resulting in higher seed mass. Productivity increased in the year with favorable weather conditions, as more of the upper nodes were reproductive. The first four nodes produced 45–91% of the yield. The number of seeds in the first three nodes was significantly cultivar-dependent, whereas the number of seeds in pods at all nodes was determined by weather conditions. Significantly more seeds were formed from each node in the wetter year. <em>Pisum sativum</em> ‘Audit’ was not sensitive to weather conditions, producing the same yield in the both years of the study.

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