Weed Control by Chemical and Mechanical Means

Jasinskas, Algirdas; Steponavičius, Dainius; Šniauka, Povilas; Zinkevičius, Remigijus

doi:10.5772/60002

Cited by 5 publications

(5 citation statements)

References 1 publication

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“…After the evaluation of the accuracy of the experimental data, the calculated numerical values of the test accuracy revealed that the calculated data were very precise. The accuracy specified did not exceed 5% (with a numeric accuracy value of p < 0.05) [39].…”

Section: Discussionmentioning

confidence: 97%

A Biotreatment Effect on Dynamics of Cattle Manure Composition and Reduction of Ammonia Emissions from Agriculture

et al. 2021

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Increasing control of localized air pollution caused by ammonia is identified, including limiting the maximum emissions from agriculture. In EU countries, the agricultural sector is the source of above 94% of the total anthropogenic emissions of ammonia, of which manure removal systems account for 56%. In view of the reason for the agricultural waste management by formation and propagation of ammonia gas—the bacterial and enzymatic degradation of organic components in excrement—it is important to evaluate the effect of biotreatment of 100% natural composition (contain Azospirillum sp. (N) (number of bacterial colonies −1 × 109 cm−3), Frateuria aurentia (K) (number of bacterial colonies −1 × 109 cm−3), Bacillus megaterium (P) (bacterial colony count −1 × 109 cm−3), seaweed extract (10% by volume), phytohormones, auxins, cytokinin, gibberellins, amino acids, and vitamins) on the emission of ammonia from organic waste. Experimental research was carried out to determine significant differences of dynamics in agrochemical composition of manure, NH3 gas emissions, depending on biotreatment, manure storage duration, and ventilation intensity of the barn. Gas emission was obtained via laser gas analyzer using a spectroscopic method in a specially reconstructed wind tunnel chamber. About 32% manure biotreatment effect on reduction of ammonia emissions was established. The maximum effect of the biodegradable compound on gaseous propagation was assessed after 28–35 days of manure storage and proved all biotreatment effect time of 49–56 days. By the saving nitrogen loses priority, manure biotreatment could reduce nitrogen losses from manure and inorganic N fertilizers by approximately 5%, also could reduce approximately 5911.1 thousand tones nitrogen fertilizer in the world and reduce approximately 5.5 Eur ha−1. “The biotreatment impact assessment confirmed that proper application of biotreatment can reduce ammonia emissions from manure and environmental pollution from agriculture”.

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Section: Discussionmentioning

confidence: 97%

A Biotreatment Effect on Dynamics of Cattle Manure Composition and Reduction of Ammonia Emissions from Agriculture

et al. 2021

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“…The aerodynamic properties of wheat grains were determined using a classifier (Figure 1) [30]. The grain (300 g) is poured into the tank (14).…”

Section: Determination Of Aerodynamic Properties Of Wheat Grainsmentioning

confidence: 99%

Determination of Optimal Technological Parameters for Sorting Wheat Grains in Chambers of Different Constructions

Vaiciukevičius,

Jasinskas,

Jotautienė

et al. 2023

Processes

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In order to extend grain’s storage time and ensure its quality, it is necessary to sort and clean it. The aim of this study was to justify the rational shape of the sorting chamber and the optimal technological parameters for the sorting of wheat grains in airflow. This study used newly designed grain sorting chambers with constant, widening, and narrowing cross-sections for the airflow sorting of “Skagen” wheat grain. The aerodynamic properties of wheat grains were investigated when moisture was at 14 ± 2.0%. The grain flow rate in the chambers varied from 4 to 12 kg min−1 every 2 kg min−1. In addition, the airflow velocity varied from 8 to 12 m s−1 every 1 m s−1. The tilt angle of the constant cross-section camera was increased to 5°. Experimental studies have determined a terminal airflow velocity of 11.53 m s−1 for wheat grains. At the terminal airflow velocity, the grain flight coefficient was obtained to be about 0.074. These studies showed that the narrowing chamber is preferable for lower grain flow rates compared to the constant cross-section of the chamber. The widening chamber requires a lower airflow velocity to achieve the same performance and quality as the other chambers.

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“…Because of the harm it causes, efforts are made in India and other countries to control the plant. Mechanical and chemical controls for the weed have been found to be effective (Jasinskas et al 2015); however, most of the chemical herbicides are harmful and cannot be used over the long term (Fugere et al 2020). Biocontrol is considered a green alternative weed management technique for Parthenium that is relatively less expensive and free of hazardous side effects (Mahadevappa 2005;Abels 2018).…”

Section: Introductionmentioning

confidence: 99%

Zygogramma bicolorata (Coleoptera: Chrysomelidae): an exotic biocontrol agent of the noxious weed, Parthenium hysterophorus (Asteraceae)

Afaq,

Kumar,

Siddiqui

et al. 2024

Can Entomol

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Parthenium hysterophorus Linnaeus (Asteraceae), commonly known as “congress grass,” is among the 10 worst weeds of India and is considered one of the world’s 100 most harmful invasive species. This species has been introduced accidentally into several countries, including India, and is a major agricultural and rangeland weed in more than 45 countries. It affects crop production, suppressing biodiversity, crop yields, the health of farm animals and human beings, and local and regional economies. Biological control has been found to be a cost-effective management strategy to control the weed, with the leaf beetle, Zygogramma bicolorata Pallister (Coleoptera: Chrysomelidae), considered an effective and safe biocontrol agent. Several studies have investigated the beetle’s biology, reproduction, and other life attributes. This review compiles the existing information about Z. bicolorata biology, growth, development, reproduction, food, and host specificity, and the effects of abiotic and biotic stressors on the insect’s life attributes. We anticipate that this review will helpful for improving strategies for this bioagent’s swift mass rearing and for developing classical biological control design for Parthenium weed.

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Weed Control by Chemical and Mechanical Means

Cited by 5 publications

References 1 publication

A Biotreatment Effect on Dynamics of Cattle Manure Composition and Reduction of Ammonia Emissions from Agriculture

A Biotreatment Effect on Dynamics of Cattle Manure Composition and Reduction of Ammonia Emissions from Agriculture

Determination of Optimal Technological Parameters for Sorting Wheat Grains in Chambers of Different Constructions

Zygogramma bicolorata (Coleoptera: Chrysomelidae): an exotic biocontrol agent of the noxious weed, Parthenium hysterophorus (Asteraceae)

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