Evaluation of some soil properties of Sesamum indicum L. before and after harvest effects

(1)

510 Evaluation of some soil properties of Sesamum indicum L. before and

after harvest effects

Şahin Cenkseven

1

_*

_{Burak Koçak}

2

_{Nacide Kızıldağ}

3

_{Cengiz Darici}

2

Hüsniye Aka Sağliker

4

1: _{Cukurova University, Faculty of Agriculture, Adana, Turkey} 2: _{Cukurova University, Faculty of Arts and Sciences, Adana, Turkey} 3: _{Cukurova University, Central Research Laboratory, Adana, Turkey}

4: _{Osmaniye Korkut Ata University, Faculty of Science and Arts, Osmaniye, Turkey}

*: scenkseven@cu.edu.tr

Sesame (Sesamum indicum L.) is one of the oldest crop as it is known for 6000 years

in human history and widespread growing in tropical and subtropical areas of the

world. In 2015, 18.500 tonnes of sesame were cultivated on 280.887 decares in

Turkey. Some soil properties of sesame grown in Research Area of Department of

Field Crops in Cukurova University located in Adana - Turkey were determined

before and after harvest to observe its effects on soil macro and micronutrients as well

as soil microbial activities. This study was conducted in two fields which were blank

as control and its adjacent field that sesame was grown. Fertilizers of nitrogen,

phosphorus and potassium (60 kg/ha) were applied in sesame field after sowing and

Emarebeno 05 WG (Emamectin benzoate 5%, 30 g/100 l) were used as an insecticide

for control of cotton bollworm (Helicoverpa armigera Hübner). Soil samples were

taken and analyzed in Cukurova University before and after harvest of sesame. Soil

macro and micronutrients weren’t significantly different between each field but soil

microbial indicators (counts of general bacteria and fungi and soil carbon and nitrogen

mineralizations of control and sesame) were found statistically different (P < 0.05)

between control and sesame field. Generally, enumeration of bacteria was low in

sesame soil [0.85 x 10

6

_{colony forming unit (cfu) /g soil] than control field (1.34 x}

10

6

_{cfu /g soil) in both before (P=0.029) and after (P=0.037) harvest. It was found that}

soil biological indicators were more variable than soil macro and micronutrients in

short term.

Keywords: sesame, soil carbon and nitrogen mineralizations, soil microbial

communities, emamectin benzoate

**_{This study was supported by Scientific Research Projects Coordinator Office of Cukurova}