Turkish Journal of Field Crops

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2. Beyler İş Hanı, No: 313 Kat: 3 Konak-İzmir

EFFECTS OF GRAZING ON SOME YIELD AND QUALITY TRAITS OF A ROTATION PASTURE MIXTURE UNDER MEDITERRANEAN ENVIROMENTAL CONDITIONS

Behçet KIR, Gülcan DEMIROöLU , RÕza AVCIOöLU, Hikmet SOYA

Abstract

This study was conducted in the experimental fields of Field Crops Department of Agriculture Faculty in Ege University, Bornova, øzmir-TURKEY under Mediterranean environmental conditions in the years, 2003-2009. Three legumes (Medicago sativa, Lotus corniculatus and Trifolium resupinatum) and four grasses (Bromus inermis, Festuca arundinaceae, Dactylis glomerata and Arrhenatherum elatius) with Sanguisorba minor were sown in rows 15 cm apart and tested for some yield and quality characteristics under cattle grazing regime. Medicago sativa and Festuca arundinaceae were the permanent and most successful legume and grass in the mixture in terms of botanical composition and cover traits throughout the experimental years. With respect to dry matter and crude protein yield characteristics, same components of the mixture also performed very well and have been evaluated as recommendable for all resembling Mediterranean environments. It was also suggested that Lotus corniculatus and Arrhenatherum elatius, both exhibiting stable and sustainable dry matter and crude protein yield contribution to overall performances of the sward, should be included in this type of Mediterranean pasture mixture. The general performance of this rotation pasture mixture was quite sustainable and suggested to utilize the sward economically for another couple of years.

Keyword: rotation pasture, Mediterranean climate, botanical composition, cover, dry matter and crude protein yield ,

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