The effect of selected plant growth-promoting rhizobacteria (PGPR) on the growth, chlorophyll content, nutrient element content, and yield of strawberry plants under natural field salinity conditions stress was investigated. Field experiments were conducted using a randomized complete block design with five PGPRs (Bacillus subtilis EY2, Bacillus atrophaeus EY6, Bacillus spharicus GC subgroup B EY30, Staphylococcus kloosii EY37, and Kocuria erythromyxa EY43) and a control (no PGPR) in 2009 and 2010. PGPR inoculations significantly increased the growth, chlorophyll content, nutrient element content, and yield of strawberry plants. PGPR treatments lowered electrolyte leakage of plants under saline conditions. The leaf relative water content (LRWC) of plants rose with bacterial inoculation. All nutrient element contents of leaves and roots investigated were significantly increased with PGPR inoculations with the exception of sodium (Na) and chlorine (Cl). The highest efficiency to alleviate salinity stress on the yield and nutrient uptake of strawberry plants was obtained from EY43 (228 g per plant) and EY37 (225 g per plant) treatment and the yield increasing ratio of plants was 48% for EY43 and 46% for EY 37 compared with the control treatment (154 g per plant). The highest nitrogen (N), potassium (K), phosphorus (P), calcium (Ca), magnesium (Mg), sulfur (S), manganese (Mn), copper (Cu), and iron (Fe) concentrations were obtained from EY43 and followed by E6, E37, and E30, and increasing ratio of leaves and root N, P, K, Ca, Mg, S, Mn, Cu, and Fe contents were 22% to 33%, 34% to 8.8%, 89% to 11%, 11.0% to 7.2%, 5.1% to 6.2%, 97% to 65%, 120% to 140%, 300% to 15%, and 111% to 9.0%, respectively. The results of the study suggested that PGPR inoculations could alleviate the deleterious effects of salt stress conditions on the growth and yield of strawberry plants under salinity conditions.

animal production IntroductıonMeadow range areas and cultivated forage crops are the most important sources of roughage for livestock (Temel and Sahin, 2011). However, the lack of cultivated forage crops in agricultural fields in combination with the early and excessive grazing of meadow ranges over long time periods has resulted in a decrease in the quantity and quality of hay. Furthermore, when herbaceous plants are dormant from autumn to spring, they cannot produce sufficient hay. The hay harvested from pasture during spring and summer is also used to feed animals during winter. As a result, livestock constantly face inadequate nutrition. Therefore, the productivity of ruminant livestock is restricted by poor nutrition because of the lack of quality roughage in the autumn and summer period in Igdir and most regions of Turkey (Temel and Sahin, 2011;Oktay and Temel, 2015 The objective of this study was to evaluate the potential fodder value of leaves of plum, apple, poplar, mulberry, peach and apricot trees. For this purpose, samples were collected by hand in autumn 2012 and 2013 when 50% of the leaves had dropped and 90% of the leaves had turned yellow. The crude protein (CP), neutral detergent fiber (NDF), acid detergent fiber (ADF), acid detergent lignin (ADL), dry matter digestibility (DMD), digestible energy (DE), metabolizable energy (ME) and relative feed value (RFV) contents were determined. The CP, DMD, DE, ME and RFV contents of peach leaves were significantly (P≤0.01) higher than those of the other trees, but they had lower NDF, ADF and ADL ratios. The lowest CP, DMD, DE, ME, RFV contents and the highest NDF, ADF, ADL values were measured in poplar leaves. According to these results, the tree leaves had a higher nutritional value than many forage grass species and hay fodder commonly used for livestock feeding. Consequently, orchard and poplar leaves that drop in autumn can be used as an alternative fodder source for livestock feeding.

No abstract

No abstract

ÖZET