Search results for "Maize"
showing 10 items of 59 documents
Soil quality indicators as affected by a long term barley-maize and maize cropping systems
2011
Most soil studies aim a better characterization of the system through indicators. In the present study nematofauna and soil structure were chosen as indicators to be assess soil health as related to agricultural practices. The field research was carried out on the two fodder cropping systems continuous maize (CM, Zea mays L.) and a 3-year rotation of silage-maize – silage-barley (Hordeum vulgare L.) with Italian ryegrass (R3) and grain-maize maintained in these conditions for 18 years. Each crop system was submitted to two management options: 1) the high input level (H), done as a conventional tillage, 2) the low input level (L), where the tillage was replaced by harrowing and the…
Occurrence of fumonisins B1 and B2 in broa, typical Portuguese maize bread
2007
Fumonisin B1 (FB1) and fumonisin B2 (FB2) are mycotoxins mainly produced by Fusarium verticillioides, and Fusarium proliferatum, fungi species most commonly isolated from maize. The natural occurrence of FB1 and FB2 in broa, typical Portuguese maize bread, was evaluated in 30 samples. Twenty five were found positive with levels ranging from 142 to 550 [mu]g kg- 1. The limit established by the European regulations was exceeded by 27% of the samples. The tolerable daily intake for fumonisin B1, and B2, alone or in combination, for all of the analysed samples, was lower than 2 [mu]g kg- 1 body weight per day established by the European Commission. http://www.sciencedirect.com/science/article/B…
Maizes ceptuves attīstība uzņēmumā SIA "HRG LUX".
2020
Darba autors :Anita Freiborne Kvalifikācijas darba tēma : Maizes ceptuves attīstība uzņēmumā SIA ‘’HRG LUX’’ Studiju programma : 1.līmeņa profesionālā augstākās izglītības studiju programma “Komercdarbības organizācija”, “Tirgzinību un tirdzniecības speciālista” apakšprogramma Darba vadītājs : Dr.sc.admin. Antra Līne Darba mērķis : Analizēt - Maizes ceptuves attīstību uzņēmumā SIA ‘’HRG LUX ‘’ Darba uzdevumi : 1. Raksturot uzņēmumu attīstību - ārējo vidi, tirgus aptveršanas stratēģijas, to lietderību un piemērotību. 2. Noskaidrot, izprast un raksturot vispārējo maizes ceptuves darbību Latvijā un Kurzemē. 3. Veikt empīrisku pētījumu par SIA ‘’HRG LUX’’ Maizes ceptuves attīstības iespējām, ra…
The impact of the cultivation practices on arbuscular mycorrhizal symbiosis mechanism in a walnut tree - corn agroforestry system
2021
The English walnut (Juglans regia L.) is the main species cultivated for the production of edible nuts. Owing to a sparse canopy and a deep rooting system, walnut is an ideal species for alley cropping, an agroforestry practice able to enhance productivity through interplant facilitative mechanisms. Walnut agroforestry requires the large scale production of seedling rootstocks selected to provide the best anchorage, vigour, and tolerance of pathogens. Due to the heterozygosity of walnut, the characteristics of agronomical interest of the chosen cultivar are not inherited via seed propagation. In vitro plant tissue culture thus plays a key role in mass propagation of high-quality walnut root…
Krīta slimības izraisītāju identificēšana maizes ražošanas procesā
2018
Krīta slimība ir reāla problēma maizes ražošanā, rada agrīnu bojāšanos un zaudējumus - mīkstumā parādās balti pulverveidīgi ieslēgumi. Cēlonis ir milti, kuros atrodas raugi un pelējuma sēnes. Izejvielas, kuras izmanto maizes cepšanai satur barības vielas, kurām ir labvēlīga vide mikroorganismu attīstībai. Nevēlamie mikroorganismi uz maizes var nokļūt no gaisa, iekārtām, taras, transporta un personāla. Šis pētījums tika veikts, lai noskaidrotu vai maizes ražotnē SIA „xxx” sastopama krīta slimība un mikroorganismi, kas to izraisa, iegūstot paraugus no izejvielām un raksturīgākajām to atrašanās vietām. Veicot laboratorijas izmeklējumus, tika identificētas piecas maizes krīta slimības izraisītā…
Impact of the growth of different maize genotypes on arbuscular mycorrhizal fungi
2001
International audience
Maize-based low-input cropping systems can provide effective weed control while ensuring crop productivity
2016
Conventional Maize Monoculture (MMConv) is now questioned for environmental reasons. During a five-year field experiment, yield and weed pressure of MMConv was compared to three low-input Cropping Systems (CS) : MMLI, a Low-Input Maize Monoculture; MMCT, a Conservation Tillage Maize Monoculture; Maize-MSW, Maize rotated with Soyabean and Wheat, all designed to reduce water pollution. In 2014 and 2015, weed-free zones were established on all CS. Weed biomass was higher in MMCT, especially for spring grasses and perennials. MMConv (11.3±1.1 T ha-1) and MMLI (10.6±2.3 T ha-1) had higher grain yields than MMCT (8.2±1.9 T ha-1). Finally, concerning yields observed in weed-free zones, MMCT yields…
Sulfate transporters in the plant’s response to drought and salinity: regulation and possible functions
2014
International audience; Drought and salinity are two frequently combined abiotic stresses that affect plant growth, development, and crop productivity. Sulfate, and molecules derived from this anion such as glutathione, play important roles in the intrinsic responses of plants to such abiotic stresses. Therefore, understanding how plants facing environmental constraints re-equilibrate the flux of sulfate between and within different tissues might uncover perspectives for improving tolerance against abiotic stresses. In this review, we took advantage of genomics and post-genomics resources available in Arabidopsis thaliana and in the model legume species Medicago truncatula to highlight and …
Latvijas maizes ražotāja SIA “Lāči” finansiālā stāvokļa novērtējums un attīstības perspektīvas
2022
Bakalaura darba temats ir “Latvijas maizes ražotāja SIA “Lāči” finansiālā stāvokļa novērtējums un attīstības perspektīvas”. Mērķis, pamatojoties uz teorētisko atziņu izpēti, novērtēt SIA ”Lāči” kā viena novadošiem miltu produkta ražotājiem finansiālo stāvokli, salīdzināt to ar diviem tiešajiem jomas konkurentiem - SIA ”Liepkalni” un SIA “Flora” - un izstrādāt priekšlikumus konstatēto nepilnību novēršanai un attīstības perspektīvas. Darba gaitā tika izstrādāti secinājumi par vispārējo attieksmi pasaulē, Eiropā un Latvijā pret maizi un tā attīstības tendenci, kā arī secinājumi par SIA “Lāči” finansiālo stāvokli un tā iegūto rezultātu salīdzīnājums ar SIA “Liepkalni”, SIA “Flora” kā rezultātā …
Identification of phytopathogenic bacteria in maize seeds in Ukraine
2018
The main bacterial diseases of maize: bacterial wilt of maize (Pantoea stewartii subsp. stewartii), goss’s bacterial wilt (Clavibacter michiganensis subsp. nebraskensis), seed rot-seedling blight of maize (Bacillus subtilis), bacterial spot of maize (Pseudomonas syringae pv. syringae), bacterial leaf spot of maize (Pantoea agglomerans) and bacterial stalk rot of maize caused by several causative agents, were described. The causative agents of these diseases are often stored and transmitted with seeds, so seed analysis for the presence of phytopathogenic bacteria is an important step in the pathogen control system. For analysis, the corn seeds that were grown in the Poltava and Kiev regions …