Turkish Journal of Field Crops

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AGROTECHNICAL INDICATORS FOR Trigonella foenum-gracum L. PRODUCTION IN THE ENVIRONMENTAL CONDITIONS OF NORTHEASTERN EUROPE

Tomasz BIEŃKOWSKI, Krystyna ŻUK-GOŁASZEWSKA, Tomasz KUROWSKI, Janusz GOŁASZEWSKI

Abstract

The aim of this paper was to study the impact of key agrotechnical factors: seed inoculation Rhizobium meliloti, sowing date, row spacing, weed control, and pathogen control, on productiveness of fenugreek seeds in the environmental conditions of the north-eastern Europe. The results indicate that the average seed yield of fenugreek from 54 test technology variants was 759 kg ha-1 , within a 9% variation range. The primary decision-supporting criteria for classification of a given technology of growing fenugreek for seeds as a high[1]yielding one under the environmental conditions of north-eastern Europe are: the earliest possible sowing date or the one delayed by no more than 10 days relative to the former, as well as the inter-row spacing of 15 cm; the second most important criteria include technological variants with chemical weed control and full antifungal protection. Among the yield-protecting treatments tested, weed control of fenugreek plantations as an agrotechnical factor was responsible for the highest variation of seed yields. Irrespective of a weeding technique (mechanical, chemical), the sowing of seeds at the earliest possible date or delayed by 10 days did not cause a significant decline in seed yield, although the sowing date postponed by 20 days might reduce the seed yield by 3-10% when mechanical weed control techniques are applied, and by 3-13% on fields treated with a herbicide.

Keyword: fenugreek, plant protection, Rhizobium, row spacing, sowing, yielding ,

Effects of Different Water Stress Levels on Biomass Yield and Agronomic Traits of Switchgrass (Panicum virgatum L.) Varieties under Semi-Arid Conditio

Erdal GONULAL, Suleyman SOYLU, Mehmet SAHIN

Abstract

A field experiment was conducted in the Wielkopolska region at the Gorzyń Research Station, Poland (52.34°N, 15.54°E) in Central Europe. The study was conducted over a 3-year period (2017, 2018, 2019) as a two-factorial design with four replications in the RCBD. The aim of the research was to determine the effect of the cultivar (‘Bolero’, ‘Tytan’) and the inoculation (Nitragina–seeds inoculation, Nitroflora I–seeds inoculation, Nitroflora II–soil inoculation, HiStick® Lupin–seeds inoculation) on plant development, seeds chemical composition and yielding of narrow-leaved lupin. The weather conditions and experimental factors significantly influenced on productivity of narrow-leaved lupin ‘Tytan’. Drought during the growing season reduced seeds and protein yields. After inoculation of HiStck the seeds yield was significantly greater by 12.4% (p < 0.01) and the protein yield after application of Nitroflora I or HiStick by 13.9% (p < 0.01) and 19.2% (p < 0.01), respectively. Correlation coefficients showed strong relations between number of pods and seeds per plant in both cultivars regardless of the inoculation variant, however the strongest relations in both cultivar were proved on HiStick treatment.
Keyword: Biological nitrogen fixation, chemical composition, legumes, protein efficiency, yielding