Bu çalışma 2021 yılında Tokat Gaziosmanpaşa Üniversitesi bünyesindeki tam otomasyonlu ısıtmalı bir serada yürütülmüştür. Bu çalışmanın amacı, farklı dozlarda mikoriza ve organik gübre uygulamalarının biber fidelerinin gelişimi üzerindeki etkisini incelemektir. Çalışmada Bulut F1 biber çeşidi kullanılmıştır. Araştırma, tesadüf parselleri deneme desenine uygun olarak 3 tekrarlı olarak gerçekleştirilmiştir. Çalışmada, biber fidesi yetiştiriciliği için torf-perlit karışımına mikorizalı ve mikorizasız farklı dozlarda besin solüsyonu ve vermikompost uygulanmıştır. Fideler bir buçuk ayda sökümü yapılmıştır. Bu araştırmada, fide boyu, hipokotil uzunluğu, gövde çapı, yaprak sayısı, yaprak yaş ağırlığı, yaprak kuru ağırlığı, kök yaş ağırlığı ve kök kuru ağırlığı özellikleri incelenmiştir. Çalışma bugularına göre, gövde çapı üzerinde vermikompost+mikoriza+EC uygulamalarının daha iyi sonuç vermiştir. Vermikompost dozları arttıkça fide boyu ve hipokotil uzunluğunda bir artış olduğu ancak vermikompost uygulamalarının etkisinin olmadığı görülmektedir. Genel olarak tüm uygulamalara bakıldığı zaman vermikompost uygulamalarına göre EC ve EC+mikoriza uygulamalarının etkisinin daha fazla olduğu görülmektedir.

Drought, a critical abiotic stress worsened by climate change, poses a substantial threat to crop production and global food security. White cabbage is classified as a moderately drought-sensitive crop. The function of folic acid, otherwise known as folate, in the plant's response to drought conditions is not yet fully understood. The aim of the study was to evaluate the potential of folic acid in enhancing certain growth parameters and physiological traits of cabbage seedlings under limited irrigation conditions. In this investigation, the effects of FA as a foliar application at 0, 100, and 200 µM (FA0, FA1, and FA2, respectively) were examined on white cabbage seedlings grown under full-irrigation (I0) and restricted irrigation (I1), set to 50% of full capacity irrigation scheme (I0). Drought stress adversely affected the plant growth properties of cabbage seedlings, whereas FA treatments mitigated the adverse effects of drought stress on the plant growth properties of cabbage seedlings. Under restricted irrigation, plants treated with 100 µM FA (FA1) had higher plant height, stem diameter and leaf area, while plants treated with 200 µM FA (FA2) had higher plant dry weight and plant dry matter content. Plant fresh weight increased with FA treatments under restricted irrigation, but no significant difference was observed between doses. On the other hand, leaf relative water content (LRWC), which decreased under restricted irrigation conditions, increased with FA applications regardless of the dose, while electrical conductivity (EC), which increased under the same conditions, decreased with 100 µM FA (FA1) application. Leaf number, root fresh weight, root fresh weight, root dry weight, root dry matter content and chlorophyll value (SPAD) were not affected by FA treatments under both restricted and full irrigation conditions. In conclusion, foliar spray of folic acid in cabbage can be recommended as a potential application to alleviate drought stress.

Drought, a critical abiotic stress worsened by climate change, poses a substantial threat to crop production and global food security. White cabbage is classified as a moderately drought-sensitive crop. The function of folic acid, otherwise known as folate, in the plant's response to drought conditions is not yet fully understood. The aim of the study was to evaluate the potential of folic acid in enhancing certain growth parameters and physiological traits of cabbage seedlings under limited irrigation conditions. In this investigation, the effects of FA as a foliar application at 0, 100, and 200 µM (FA0, FA1, and FA2, respectively) were examined on white cabbage seedlings grown under full-irrigation (I0) and restricted irrigation (I1), set to 50% of full capacity irrigation scheme (I0). Drought stress adversely affected the plant growth properties of cabbage seedlings, whereas FA treatments mitigated the adverse effects of drought stress on the plant growth properties of cabbage seedlings. Under restricted irrigation, plants treated with 100 µM FA (FA1) had higher plant height, stem diameter and leaf area, while plants treated with 200 µM FA (FA2) had higher plant dry weight and plant dry matter content. Plant fresh weight increased with FA treatments under restricted irrigation, but no significant difference was observed between doses. On the other hand, leaf relative water content (LRWC), which decreased under restricted irrigation conditions, increased with FA applications regardless of the dose, while electrical conductivity (EC), which increased under the same conditions, decreased with 100 µM FA (FA1) application. Leaf number, root fresh weight, root fresh weight, root dry weight, root dry matter content and chlorophyll value (SPAD) were not affected by FA treatments under both restricted and full irrigation conditions. In conclusion, foliar spray of folic acid in cabbage can be recommended as a potential application to alleviate drought stress.

Swiss chard (Beta vulgaris L. var. cicla Moq.), which is grown as a vegetable in Turkey and well adapted to the Marmara region, was used in our experiments. Provided by a producer, chard seedlings were grown in 6 L plastic bags in a non-heated plastic greenhouse. Starting from the 4-5 true-leaf stage to harvest, sodium chloride (NaCl)-added tap water at 5 different electricity conductivity (EC) values [(0. 4 (tap water, control), 8, 16, 24 and 32 dS/m)] was used as irrigation water. The results showed that the EC of the irrigation water affected some of the morphological and physiological properties of chard. An increase in the EC value of irrigation water led to a decrease in the number of leaves, leaf weight, leaf area, plant length, root length, chlorophyll content and increase in the injury level in the leaves and leaf thickness of Swiss chard. The changes observed upon the application of irrigation water with an EC of 16 dS/m were 50% greater than those observed in the control plants, whereas irrigation water with an EC of 32 dS/m results in severe discoloration and yellowing, but the plant was still alive. Therefore, chard growing can be suggested in agricultural areas with salinity problems.

Biochar is now gaining awareness as a sustainable tool for soil health improvement, boosting carbon (C) storage and the enhancement of nutrient cycling in agricultural soils. This study assesses the effects of biochar on soil respiration, pH, and electrical conductivity (EC) in savanna soils over a 45-day incubation trail in the laboratory. Four different biochar treatments (0, 2, 4, and 6 t/ha) were used in the study. The treatments were established at 26°C, and after 2, 5, and 10 days, the CO2 levels were recorded. After incubation for 0, 5, 10, and 45 days, the EC and pH were assessed. As the rate of application of biochar increased, the rate of CO2 evolution increased as well. During the first two days of incubation, the CO2 evolution rate rose by a value of 129 at 2 t/ha biochar, 146 at 4 t/ha biochar, and 168 ug CO2/g soil/d at 6 t/ha biochar above the 0 t/ha biochar. Following five days of incubation, the amounts of CO2 evolution that were higher than the control were 99 with 2 t/ha, 116 with 4 t/ha, and 120 ug CO2/g soil/d with 6 t/ha of biochar. The increase in CO2 evolution above the control treatment at 10 days of incubation was 61 with 2 t/ha, 79 with 4 t/ha, and 87 ug CO2/g soil/d with 6 t/ha of biochar. Analogously, rising patterns in CO2 emissions were noted. Throughout the whole incubation period, the biochar treatments' soil EC and pH were greater than those of the control treatment. After applying biochar, there were increases in the evolution of CO2, however after 10 days of incubation, the percentage of C evolved from the addition of biochar decreased as the rates of biochar increased. At two t/ha, four t/ha, and six t/ha, the percentage C developed was 1.74 %, 1.66%, and 0.82% of the applied biochar C, respectively. Although the CO2 evolved ratio to the total amount of biochar C typically reduced with increasing biochar rates, this study shows that the addition of biochar increases soil respiration, EC, and pH.

Domates, dünyada üretilen en önemli sebze türlerinden birisidir. Hem tarla hemde serada domates yetiştiriciliğinde başlangıç materyali olarak genellikle tohumdan ziyade fide kullanılmaktadır. Bu çalışmanın amacı, farklı dozlarda mikoriza, vermikompost ve gübre uygulamalarının domates fidelerinin gelişimi üzerindeki etkisini araştırmaktır. Çalışmada Cuma F1 domates çeşidi kullanılmıştır. Araştırma, tesadüf parselleri deneme desenine uygun olarak 3 tekerrürlü olarak gerçekleşmiştir. Çalışmada, domates fidesi yetiştiriciliği için %70 torf %30 perlit karışımı olan ortamlara EC 0.5-1.00 ile hem mikorizalı hemde mikorizasız şekilde farklı oranlarda vermikompost (% 0, 10 ve 20) dozları uygulanmıştır. Fideler bir buçuk ayda sökümü yapılmıştır. Bu araştırmada, domates bitkilerinin şu morfolojik (fide boyu, hipokotil uzunluğu, gövde çapı, yaprak sayısı, yaprak yaş ağırlığı, yaprak kuru ağırlığı, kök yaş ağırlığı ve kök kuru ağırlığı) özellikleri incelenmiştir.  Çalışma sonucunda, vermikompost ve mikoriza uygulamalarının ortamda bulunması birçok parametre bakımından önemli farklar oluşturmaktadır. Tam gübre (EC1)  dozlarında fide kalitesinin arttığı ve düşük gübreleme (EC 0.5) dozlarında ise ortama vermikompost ilave edilmesinin fide gelişimini olumlu yönde etkilediği görülmüştür.

Bu çalışma 2021 yılında Tokat Gaziosmanpaşa Üniversitesi bünyesindeki tam otomasyonlu ısıtmalı bir serada yürütülmüştür. Bu çalışmanın amacı, farklı dozlarda mikoriza ve organik gübre uygulamalarının biber fidelerinin gelişimi üzerindeki etkisini incelemektir. Çalışmada Bulut F1 biber çeşidi kullanılmıştır. Araştırma, tesadüf parselleri deneme desenine uygun olarak 3 tekrarlı olarak gerçekleştirilmiştir. Çalışmada, biber fidesi yetiştiriciliği için torf-perlit karışımına mikorizalı ve mikorizasız farklı dozlarda besin solüsyonu ve vermikompost uygulanmıştır. Fideler bir buçuk ayda sökümü yapılmıştır. Bu araştırmada, fide boyu, hipokotil uzunluğu, gövde çapı, yaprak sayısı, yaprak yaş ağırlığı, yaprak kuru ağırlığı, kök yaş ağırlığı ve kök kuru ağırlığı özellikleri incelenmiştir. Çalışma bugularına göre, gövde çapı üzerinde vermikompost+mikoriza+EC uygulamalarının daha iyi sonuç vermiştir. Vermikompost dozları arttıkça fide boyu ve hipokotil uzunluğunda bir artış olduğu ancak vermikompost uygulamalarının etkisinin olmadığı görülmektedir. Genel olarak tüm uygulamalara bakıldığı zaman vermikompost uygulamalarına göre EC ve EC+mikoriza uygulamalarının etkisinin daha fazla olduğu görülmektedir.

Biochar is now gaining awareness as a sustainable tool for soil health improvement, boosting carbon (C) storage and the enhancement of nutrient cycling in agricultural soils. This study assesses the effects of biochar on soil respiration, pH, and electrical conductivity (EC) in savanna soils over a 45-day incubation trail in the laboratory. Four different biochar treatments (0, 2, 4, and 6 t/ha) were used in the study. The treatments were established at 26°C, and after 2, 5, and 10 days, the CO2 levels were recorded. After incubation for 0, 5, 10, and 45 days, the EC and pH were assessed. As the rate of application of biochar increased, the rate of CO2 evolution increased as well. During the first two days of incubation, the CO2 evolution rate rose by a value of 129 at 2 t/ha biochar, 146 at 4 t/ha biochar, and 168 ug CO2/g soil/d at 6 t/ha biochar above the 0 t/ha biochar. Following five days of incubation, the amounts of CO2 evolution that were higher than the control were 99 with 2 t/ha, 116 with 4 t/ha, and 120 ug CO2/g soil/d with 6 t/ha of biochar. The increase in CO2 evolution above the control treatment at 10 days of incubation was 61 with 2 t/ha, 79 with 4 t/ha, and 87 ug CO2/g soil/d with 6 t/ha of biochar. Analogously, rising patterns in CO2 emissions were noted. Throughout the whole incubation period, the biochar treatments' soil EC and pH were greater than those of the control treatment. After applying biochar, there were increases in the evolution of CO2, however after 10 days of incubation, the percentage of C evolved from the addition of biochar decreased as the rates of biochar increased. At two t/ha, four t/ha, and six t/ha, the percentage C developed was 1.74 %, 1.66%, and 0.82% of the applied biochar C, respectively. Although the CO2 evolved ratio to the total amount of biochar C typically reduced with increasing biochar rates, this study shows that the addition of biochar increases soil respiration, EC, and pH.