نتایج جستجو برای: l50

تعداد نتایج: 233  

Journal: :Agronomy 2022

We aimed to optimize field border length in the Huang-Huai-Hai Plain of China (HPC) reduce soil inorganic nitrogen residues and increase absorption utilization by wheat plants using a traditional irrigation system. In two-year experiment (2017–2019) conducted HPC, four lengths were tested: 20 m (L20), 30 (L30), 40 (L40), 50 (L50). Supplementary was implemented during jointing anthesis stages, c...

Journal: :Acta Limnologica Brasiliensia 2023

Abstract Aim The largemouth bass Micropterus salmoides was introduced in more than 50 countries for the purpose of sport fishing. In Brazil, records date from 1922, and nowadays many populations are known to occur southern region. Here we investigated reproductive biology this species a small reservoir understand role strategy invasion process assist its management. We conclude with suggestions...

Journal: :Marine and life sciences 2021

Bu çalışmada, bakalyaro (Merluccius merluccius) ve derinsu mezgiti’nin (Micromesistius poutassou) 40 mm ağ göz açıklığına sahip kare (40S) döndürülmüş (40T90) torbalardaki seçicilik parametreleri araştırılmıştır. Denemeler 1200 gözlü dip trolü kullanarak Ege Denizi'nin uluslararası sularında gerçekleştirilmiştir. Torbalar düğümlü polietilen (PE) 380d/21 no ip kalınlığında 5 m uzunluğundadır. To...

Journal: :Boletim Do Instituto De Pesca 2022

Centropomus undecimalis (popularly known as common snook) is a very important resource for commercial and recreational fishing. This study aimed to evaluate quantitative indicators of the reproductive biology C. in Parnaíba Delta Environmental Protection Area (Brazil). The parameters were analyzed at different stages cycle 155 specimens, 135 (87.10%) males 20 (12.90%) females. results showed po...

Journal: :Jurnal Biolokus 2022

<em>This study aims to inform about the gonadal maturity level, index, first body size of (L50), and fecundity Harpiosquilla raphidea in </em><em>Labuhanbatu regency waters, North Sumatera. The was conducted for three months from December 2021 February 2022 with samplings were twice a month. purposive random sampling method used determine stations this research. Samples H. cau...

Journal: :Journal of Marine Science and Engineering 2021

Understanding the interactions between target species and netting is paramount for increasing sustainability of trawling activities. The selectivity utilized depends on sizes opening angles mesh. effects mesh size angle fishing Antarctic krill (Euphausia superba) were assessed via micro-cosmos experiments. results show that both absolute abundance incidence larger individuals passing through ex...

Journal: :International Journal of Environment, Agriculture and Biotechnology 2022

This research was aimed at proving the differences between catch results of fish trapped inside bubu buton (fish pot) and those that escaped through escape gap to analyze selectivity for dominant fish. carried out in Kotania Bay period March-May 2019 fishing experiment. Five units with a dimension 70x70x26 cm, containing 4 gaps each unit, were used during experiments total 11 trips. The showed ...

Journal: :Acta aquatica turcica 2022

Considerable by-catch problems have occurred in the commercial beam trawl fishery targeted at deep water pink shrimp Sea of Marmara. In this study, grid systems were used to reduce untargeted catch and improve species' selectivity. By-catch reduction ratios trawls deployed with without compared by parallel hauling method. Selectivity values 20 mm bar spacing 24 mesh size cod-end also analyzed S...

Journal: :Acta aquatica turcica 2021

Çalışmada, Doğu Karadeniz’deki Mezgit (Merlangius merlangus) popülasyonunun bazı temel parametrelerinin belirlenmesi amaçlanmıştır. Mart 2017- Şubat 2018 tarihleri arasında yapılan 12 aylık örneklemede elde edilen ve incelenen 1579 adet mezgit balığının boylarının 7,5 cm ile 32,6 dağılım gösterdiği ortalama boyun 14,49±2,85 olduğu, ağırlıklarının ise 2,68 g 279,58 ağırlığın 26,05±20,95 olduğu b...

Journal: :Indian Journal of Pure & Applied Physics 2023

Rapid urbanization and population growth in Chandigarh, India, have resulted increased noise pollution levels, affecting the quality of life for its residents. This research paper aims to conduct a comprehensive analysis mapping Chandigarh City. In this study 25 monitoring sites throughout township were utilised analyse traffic using descriptors (L10, L50, L90, NC, TNI NPL). The hourly equivale...

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