Winter wheat crown and root rot are affected by soil tillage and crop rotation in Latvia

Author(s):  
Biruta Bankina ◽  
Gunita Bimšteine ◽  
Antons Ruža ◽  
Ilze Priekule ◽  
Līga Paura ◽  
...  
Author(s):  
М. В. Тищенко ◽  
В. М. Смірних ◽  
С. В. Філоненко ◽  
В. В. Ляшенко

У результаті польових досліджень було встановлено вплив попередників, системи удобрення і способів основного обробітку ґрунту на ураження рослин пшениці озимої кореневими гнилями в короткоротаційних сівозмінах зони недостатнього зволоження. Найбільше уражених рослин пшениці озимої кореневими гнилями виявилось в зернопросапній сівозміні, де попередником була сама пшениця, а також в зернопаропросапній сівозміні, де попередником був чорний пар. Найменше уражених кореневими гнилями рослин пшениці озимої (15,3–20,0 %) за найнижчої інтенсивності розвитку хвороби (5,8–7,3 %) спостерігали після кукурудзи на силос. Проведення поверхневого обробітку ґрунту на глибину 10–12 см під зернові культури, в тім числі й під пшеницю озиму, на фоні 6,25 т гною + N33,8Р45,0К33,8 + солома + гичка в просапній сівозміні після кукурудзи на силос спричинило найбільше ураження рослин пшениці кореневими гнилями (24,4 %) з підвищенням інтенсивності розвитку хвороби до величини 10,5 %. Проведення оранки під усі культури в просапній сівозміні за внесення за ротацію сівозміни з розрахунку на 1 га ріллі 6,25 т гною + N33,8Р45,0К33,8 + солома + гичка забезпечило найвищу урожайність зерна пшениці озимої – 4,39 т/га. As a result of field studies, the effect of predecessors, fertilizer systems and methods of basic tillage on the damage of winter wheat plants by root rot in short-rotation crop rotations in the zone of inadequate moisture was established. The most affected wheat plants of winter rot was found in grain sown crop rotation, where the forerunner was the wheat itself, as well as in the grain-para-breeding crop rotation, where the black pairs were the precursor. The least affected by root rot of winter wheat plants (15.3–20.0 %) at the lowest intensity of disease (5.8–7.3 %) was observed after corn silage. Conducting surface cultivation of soil at a depth of 10–12 cm under grain crops, including under winter wheat, against the background of 6.25 t of manure + N33.8R45.0K33.8 + straw + gill in the crop rotation after corn on silage caused most defeat of wheat plants by root rot (24.4 %) with an increase in the intensity of the disease to a value of 10.5 %. Providing plowing for all crops in the fertile crop rotation for rotation of crop rotation per hectare of arable land of 6.25 tons of manure + N33.8R45.0K33.8 + straw + lace ensured the highest yield of wheat of winter wheat – 4.39 tons/ha.


2015 ◽  
Vol 102 (1) ◽  
pp. 67-72 ◽  
Author(s):  
Biruta Bankina ◽  
Antons Ruža ◽  
Līga Paura ◽  
Ilze Priekule

Agronomy ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 304 ◽  
Author(s):  
Katarzyna Panasiewicz ◽  
Agnieszka Faligowska ◽  
Grażyna Szymańska ◽  
Jerzy Szukała ◽  
Karolina Ratajczak ◽  
...  

Legumes are increasingly important crops in most European Union (EU) countries because of the growing demand for feed protein, and also because they have been shown to improve the characteristics of soil. The main part of the crop rotation is taken up by cereals, but they are connected with undesirable side effects, such as the unilateral utilization of ingredients and the heightened risk of plant diseases, e.g., Fusarium. Simplification of farming methods has become increasingly popular as growers search for cheaper production technologies. However, the effects of long-term simplification in tillage practices on the production and economics of narrow-leafed lupine (NL) cultivation have not been studied. In 2012–2016, we carried out a field experiment in Poland with a one-factorial design with four replications. The aim of the experiment was to evaluate the productivity effect of conventional tillage (CT), reduced tillage (RT) and no-tillage (NT) on NL-winter wheat (WW)-winter triticale (WT)-winter barley (WB), rotation. Our results show that the productivity of this crop rotation was lower under RT and NT systems than under CT. From a practical point of view, the reduction of cultivation in rotation with 75% of cereals caused a decrease in yield in all species, which can result in resign of using the RT and NT in conditions of Albic Luvisols soil, as classified according to the World Reference Base (WRB). The highest incomes were found when the CT system was used with NL. Although income losses exceeded the value of savings in both minimalized soil tillage systems (RT and NT), all tillage systems of NL were profitable.


2021 ◽  
Vol 45 (340) ◽  
pp. 21-27
Author(s):  
Biruta Bankina ◽  
Gunita Bimšteine ◽  
Irina Arhipova ◽  
Jānis Kaņeps ◽  
Madara Darguža

Abstract Reduced tillage is considered as one of the main tools to save biological diversity; however, it increases pressure of diseases, including wheat leaf blotches. The aim of present study was to clarify the impact of reduced soil tillage on the development of winter wheat leaf blotches in different schemes of crop rotation. The impact of different growing technologies on the severity of winter wheat disease was evaluated in a two-factorial experiment: A – soil tillage system, and B – different combinations of wheat pre-pre-crop and pre-crop (wheat, oilseed rape, barley and faba beans). Diseases were assessed every 10 days approximately and total impact of diseases was evaluated by calculating AUDPC (Area under Diseases Progress Curve). Tan spot, caused by Pyrenophora tritici-repentis was dominated disease over the long period, regardless of meteorological conditions. Development of Septoria leaf blotch was not influenced by neither crop rotation nor soil tillage. The level of tan spot was essentially higher after wheat, regardless of the pre-pre-crop. Reduced soil tillage promoted severity of tan spot. Ploughing mitigated effect of previous crops and differences in tan spot level were insignificant. Despite many positive effects of conservation tillage, increasing of fungicide treatment could be necessary, in conditions, when the tan spot is most devastating and widespread wheat disease.


1995 ◽  
Vol 9 (2) ◽  
pp. 362-365 ◽  
Author(s):  
William E. Grey ◽  
Paul C. Quimby ◽  
Donald E. Mathre ◽  
James A. Young

The effects of five soil fungi, endemic to the western United States, were evaluated for disease reaction, root dry weights and shoot dry weights on five grass species. The undesired grass, downy brome or medusahead, the perennial forage species, squirreltail or western wheatgrass, and winter wheat were susceptible to take-all. Downy brome, medusahead, squirreltail, and winter wheat were susceptible to crown rot. The desired grasses, squirreltail, western wheatgrass, and winter wheat, were susceptible to barepatch. Crown rot is adapted to dry soils and may be a potential biological control on downy brome and medusahead in the arid environment of the western U.S.


2021 ◽  
Vol 3 (27) ◽  
pp. 107-116
Author(s):  
V.A. Lukyanov ◽  
◽  
L.B. Nitchenko ◽  

In modern agriculture, resource-saving technologies for cultivating grain crops and their optimization are becoming more and more relevant. The use of scientifically-based crop rotations, tillage methods and doses of mineral fertilizers allow increasing economic efficiency of winter wheat cultivation. The purpose of the research was to assess the yield and quality of winter wheat grain depending on different doses of mineral fertilizers under non-moldboard soil tillage in the crop rotations of the Central Chernozem Region. The research was carried out in 2012-2020 in a stationary multifactorial field experiment in Federal Agricultural Kursk Research Center. The experimental design included the following options: Factor A – crop rotations (grain-fallow-row, grain-grass-row, grain-grass); Factor B – mineral fertilizers (without fertilizers, N20P40K40, N40P80K80 kg ha-1). The soil of the experimental site is represented by typical, medium-loamy chernozem. The paper shows that the yield of winter wheat grain in the context of non-moldboard soil tillage was higher in the grain-fallow-row crop rotation and amounted to 3.34 t ha-1. In the grain-grass-row and grain-grass crop rotations, yield decreased by 6.6 % and 10.2 %, respectively. The maximum grain yield (3.98 t/ha-1) was obtained in grain-fallow-row crop rotation with N40P80K80. An increase in fertilizers doses led to protein and gluten content increment from 12.6 to 13.3 % and from 22.8 to 25.6 %, respectively; however, the differences in crop rotations were within the limits of experimental error. The grain nature varied according to the studied factors from 708 to 735 g/l-1 and was higher in the grain-fallow-row crop rotation with a dose of mineral fertilizers N40P80K80. Despite more significant net income after increased fertilizers dose (N40P80K80), the increase in the winter wheat grain yield did not allow obtaining a higher level of profitability compared to N20P40K40. Winter wheat cultivation in grain-grass-row crop rotation with N20P40K40 was the most cost-effective. In this variant, the cost of grain was the lowest (4.92 thousand rubles t-1); the profitability, on the contrary, was the highest (103.4 %).


2021 ◽  
Author(s):  
Milena Simic ◽  
◽  
Vesna Dragičevic ◽  
Željko Dolijanovic ◽  
Milan Brankov ◽  
...  

The advantages of the three- and four-crop rotations in relation to the two- crop rotation are reduced frequency of soil tillage, and thus savings in energy sources, lower intake of mineral nitrogen fertilisers and the amount of applied herbicides. The aim of the present study was to indicate the importance of a proper alternation of crops in the three-crop rotation system and to compare the advantages of cultivation of maize after winter wheat or soybean in terms of reducing weediness, formation of the harvest index and grain yield. Results of long-term studies have shown that the crop sequence significantly contributed to the decrease in fresh biomass of weed and the increase in the harvest index and grain yield in the maize-winter wheat-soybean rotation in relation to the maize-soybean-winter wheat rotation.


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