Ereğli Tarım Bilimleri Dergisi Current Issue

This research was conducted to determine the forage yield and forage quality of some berseem clover (Trifolium alexandrinum L.) cultivars for two years in 2020-2021 and 2021-2022 growing seasons under dry land conditions of Kozan. In the study, two berseem clover cultivars (Derya and Efsane) were tested. The experiment was established according to a randomized block design with three replications at the Research and Application area of Kozan Campus of Çukurova University, Adana. In the study, according to the two-year average values; Depending on cultivars of berseem clover varied plant height between 91.5-102.4 cm, green forage yield between 2219.4-2795.4 kg da-1, hay yield between 521.4-761.2 kg da-1, ADF rate in dry matter between 40.4%-41.5%, NDF rate in dry matter between 54.8%-57.6%, crude protein rate in dry matter between 17.8%-20.4% and relative feed value between 91.4-97.7. In line with the findings obtained from the research, it was concluded that Efsane cultivar, which has high forage yield although its forage quality is lower than Derya cultivar, can be recommended in order to provide quality roughage for livestock farms under the dry land conditions of Kozan and similar ecologies.

Pistachio (Pistacia vera L.) is a member of Anacardiceae family and the only cultural form of Pistacia species. P. vera is a dioecious species and there are a few hermaphrodite and monoecious flower nature within Pistacia. Breeding of the pistachio is quite a long process due to several limiting factors such as dioecious flower habitat, quite long juvenile period and alternate bearing. Recently, pistachio genomes have been released with chromosomal level and genome size was about 600 Mb. In the current paper, Next Generation Sequencing (NGS) data of Siirt cultivar has been analyzed to detect the impact of the ignoring duplicates during variant calling stage. About 5.2 Gb data was utilized for detection of the short InDels and SNPs. The highest mapping rate was exhibited with 99.83% and about 35 million reads was aligned successfully reference map. Mapping quality and read coverage depth filtering were carried out MQ>30 and DP>2, respectively. Totally, 7.18% of the reads represented duplicate reads (2.5 million reads).  BAM file without MarkDuplicates (MD) was generated a total of 1,022,161 SNPs and 124,762 InDels, BAM file with MD produced a total of 1,050,788 SNPs and 128,109 InDels. Each VCF files were compared according to positions. Same and different (reference allele same but different alternate alleles) variants at the same positions were recorded separately. In addition, BAM file passing MD stage in variant calling were caused the loss of a total of 42,413 true negative loci (TNL) and the getting of a total 10,439 false positive loci (FPL). Therefore, MD is a significant phase of the variant calling all of the organisms and should be carried out to eliminate of false positive loci. The results of the present study can be beneficial for detection of the variants in the next breeding programs.

Bu çalışmada bazı mısır çeşitlerinde farklı bitki sıklıklarının verim ve bazı tarımsal özelliklere etkileri belirlenmeye çalışılmıştır. Deneme, Konya/Karapınar şartlarında 2015/2016 yıllarında yürütülmüştür. Deneme tesadüf bloklarında bölünmüş parseller deneme desenine göre 3 tekrarlamalı olarak kurulmuştur. Çalışmada bölgede yaygın olarak yetiştirilen 3 çeşit (Pionner 0537, DKC 5783, KWS 6565) ana uygulama olarak kullanılmıştır. Alt uygulamalar olarak sabit sıra aralığı (70 cm) ve 7 farklı sıra arası (12, 14, 16, 18, 20, 22 cm) ve çapraz çift sıra (50x24) kullanılmıştır. Çalışma 3 çeşit x 7 sıra arası x 3 tekrar olmak üzere toplam 63 parselden oluşmuştur. Çalışmada farklı bitki sıklıklarının tane verimi ve bazı tarımsal özellikleri etkilediği belirlenmiştir. Bitki sıklığı arttıkça tane veriminin arttığı fakat sap çapının azaldığı görülmüştür. Özellikle çift sıra çapraz ekimde verimin yüksek olmasına rağmen sap çapı değerinin çok düşük olduğu görülmüştür. Hem verim hem de sap kalınlığı dikkate alınarak 14 ve 16 cm sıra aralıklarının daha uygun olduğu görülmüştür. Aynı zamanda bitki sıklıklarının çeşitlere göre de verimin etkilediği görülmüş olup, dik yapraklı çeşitlerin sık ekime daha uygun olduğu görülmüştür.

This study was conducted on 693 lambs born between 2019 and 2021 in an Akkaraman sheep farming registered with the 'National Small Ruminant Breeding Project' in Çankırı Province. The study aimed to investigate the distribution of lamb births throughout the day and the relationship between birth times and lamb sex, birth type, birth year, and lamb mortality at birth. For this purpose, the 24 hours of the day were divided into four equal segments of six hours each: 1. night (00:01-06:00), 2. morning (06:01-12:00), 3. afternoon (12:01-18:00), and 4. evening (18:01-00:00). Lamb births occurred most frequently at night, accounting for 39%, followed by morning (23.1%), evening (20.2%), and afternoon (17.7%). It was observed that lamb births were highest during the night for both female (42.8%) and male (35%) lambs, as well as for single (42.0%) and twin (30.9%) births. It was noted that births in 2019 (42.0%) and 2020 (30.9%) occurred most frequently during the night, while in 2021 (29.4%), they occurred most frequently in the evening. The highest rate of lamb mortality at birth was observed during the afternoon hours (4.1%). According to the Chi-square (χ2) analysis results, the effect of birth type (P=0.023) and birth year (P=0.001) was significant, while the effect of gender and lamb mortality at birth was found to be not significant. The study indicates that lamb births in Akkaraman sheep are concentrated during the night, providing an opportunity for farmers to be prepared during birth, and to increase lamb health and farm productivity.

Optimized fertilizer and fertigation program is of great importance for a quality production in lettuce cultivation. Reducing the excessive use of chemical fertilizers and using alternative products for sustainable use of agricultural resources is an effective way for the renewability of our natural resources. In this regard, the effect of 'K-Feldspar' mineral, which is a natural potassium source, on yield and quality was investigated in order to reduce the use of potassium chemical fertilizers used as macronutrients in Iceberk lettuce (Mira variety) cultivation. The experiment was planned according to the random parcel design with three replications and 12 plants in each replicate by forming the combinations of Control, Chemical fertilizer, Feldspar (500, 1000 and 1500 kg/da) and Chemical fertilizer+Feldspar (500, 1000, 1500 kg/da F + Plant height (cm), plant diameter (cm), stem diameter (mm), chlorophyll content, yield (kg/da), head weight (g), sçkm (brix), number of waste leaves (pcs), waste leaf weight (g), fresh and dry leaf weight (g) were analyzed. As a result, 1500 kg/da Feldspar + chemical fertilizer application had a positive effect on both yield and quality parameters. While only K-Feldspar treatments were more effective on plant height compared to the other treatments, chlorophyll measurements, which are important in terms of plant photosynthesis production, were positively affected in 1000 kg/da feldspar+chemical fertilizer combination compared to the other treatments. .