The Effect of Different Irrigation Regimes on Chlorophyll Content (SPAD) in Silage Maize Grown by Organic Fertilization

Dan Badaou A. N. A., Şahin Ü.

3 RD INTERNATIONAL CONFERENCE ON FOOD, AGRICULTURE AND ANIMAL SCIENCES (ICOFAAS 2021), Erzurum, Türkiye, 13 - 17 Ekim 2021, ss.299-306

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Basıldığı Şehir: Erzurum
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.299-306
  • Atatürk Üniversitesi Adresli: Evet

Özet

Soil moisture is one of the environmental factors affecting microbial activity that causes carbon mineralization. In frequent irrigation (low regime), it is expected that mineralization and therefore nitrogen release will increase in the surface soil where farm (cattle) manure with high organic matter is mixed. Nitrogen is the main source of nutrients for plant growth and high yields in silage maize. There is a direct relationship between chlorophyll meter (SPAD) measurements used to determine the leaf chlorophyll content, which affects the net photosynthesis rate, and nitrogen sufficiency. In this study, the seasonal variation of SPAD values in silage maize applying three different irrigation regimes (irrigations when "real time crop evapotranspiration - effective precipitation" value reached to 20, 40 and 60% of the available water) in two different fertilizations (organic and mineral) treatments were investigated. As a result, the SPAD values decreased with the increase in the irrigation regime, the SPAD values were determined higher in the organic fertilization compared to the mineral fertilization, and resulting in more silage yield.