Tag Archives: wheat

371-378 A. Sliesaravičius, J. Pekarskas, V. Rutkovienė and K. Baranauskis
Grain yield and disease resistance of winter cereal varieties and application of biological agent in organic agriculture
Abstract |
Full text PDF (119 KB)

Grain yield and disease resistance of winter cereal varieties and application of biological agent in organic agriculture

A. Sliesaravičius, J. Pekarskas, V. Rutkovienė and K. Baranauskis*

Lithuanian University of Agriculture, Studentų 11, Lt-53361, Akademija,Kaunas distr., Lithuania
*Lithuanian Institute of Horticulture, Babtai, LT-54333 Kaunas distr., Lithuania;e-mail: algis.Sliesaravicius@lzuu.lt

Abstract:

Field trials with different varieties of winter wheat, rye barley and triticale were carried out at the Agroecology Center of the Lithuanian University of Agriculture from 2003-2005. The biological agent biojodis was tested. The winter wheat varieties ‘Baltimor’ and ‘Residence’ were found to be the most resistant to Septoria tritici (leaf blotch. The biological agent biojodis increased wheat grain yield for separate varieties by 0.38 – 0.97 t ha-1. No significant differences in disease resistance were found among the triticale and rye varieties tested. Research on the biological agent biojodis revealed that this agent reduced the incidence of fungi in the grain of the winter wheat variety ‘Širvinta 1’, thus it could diminish the number of mycromicetes species and the fungal infection level.The grain untreated wtith biojodis was found to be infected with 4 fungi species(Aspergillus oryzae, Fusarium nivale, Fusarium poae, Mycelia sterilia), where the infection level reached 9.0×103 cfu (colony forming unit), whereas the grain treated with the agent at a rate of 2 l t-1 was found to be infected with 2 species of fungi (Fusarium poae, Fusarium sporotrichiodes) at 5.5×103 cfu (colony forming unit) infection level.

Key words:

, , , , , , , ,




37–44 R. Lauk and E. Lauk
Yields in vetch-wheat mixed crops and sole crops of wheat
Abstract |
Full text PDF (105 KB)

Yields in vetch-wheat mixed crops and sole crops of wheat

R. Lauk and E. Lauk

Institute of Agricultural and Environmental Sciences; Estonian University of Life Sciences, Kreutzwaldi St. 64, 51014 Tartu, Estonia; e-mail: ruth.lauk@emu.ee

Abstract:

Field trials with common vetch (Vicia sativa L.) and spring wheat (Triticum aestivum L.) mixes were conducted from 1994 to 2004 on pseudopodzolic moderately moist soils in the trial fields of the Institute of Agricultural and Environmental Sciences of the Estonian University of Life Sciences at Eerika, outside Tartu (58o 23´ N, 26o44´ E). The results of the research showed that in cases where the yields of post-cereal wheat monocultures were 1500–3000 kg ha-1 vetch-wheat mixed crops (at the seed densities of 50 germinating vetch seeds and 250 germinating wheat seeds per m2) guaranteed an approximate harvest of 3000 kg ha-1, even under no nitrogen fertilisation, provided the total amount of precipitation in the growth period was 300 ± 50 mm. If the yields of monocultural wheat topped the level of 3000 kg ha-1, mixed crops, however, lost their advantage over wheat monocultures as the latter’s grain harvests were greater in those cases. Vetch-wheat mixed crops maintained their advantage over sole crops of wheat insofar as protein yields were concerned, primarily due to the high protein content of vetch. The extra gain in the protein yields of mixed crops compared to wheat monocultures was 100–500 kg ha-1 in our study, and was heavily dependent on the protein levels monocultural wheat was able to produce in each particular case.

Key words:

, , , ,