In order to alleviate the drought adversities on maize (Zea mays L.)biomass accumulation and radiation use
efficiency (RUE), a field study was conducted under drought stress levels of D1 = well-watered, D2 = drought
stress at blister stage, D3 = drought stress at blister and dough stages; and integrated nutrition levels, N0 =
control, N1 = NPK, 125-60-62 kg ha-1
, N2 = NPK, 125-60-62 kg ha-1 + FYM at 10 t ha-1
, N3 = NPK, 125-60-62 kg
ha-1 + FYM at 15 t ha-1
, N4 = NPK, 250-120-125 kg ha-1
, N5 = NPK, 250-120-125 kg ha-1 + FYM at 10 t ha-1
, N6 =
NPK, 250-120-125 kg ha-1 + FYM at 15 t ha-1
. Drought stress caused a significant decline in growth traits,
interception of photosynthetically active radiation (PAR), RUE and finally biomass production. The highest
leaf area index, leaf area duration, crop growth rate, net assimilation rate, interception of PAR and dry matter
accumulation was recorded in plants applied with NPK (250-120-125 kg ha-1
) in combination with FYM (15 t
ha-1
), whereas only NPK application did not significantly improve light interception and dry biomass
production. Fraction of intercepted (Fi) radiation was significantly improved by integrated nutrient
management under well-watered as well as drought stress conditions. A substantial decrease in total dry
matter and grain yield basis RUE was recorded from higher to lower plant nutrition rates, as the highest value
of RUE was found with treated plants of 250-120-125 kg NPK ha-1 + FYM at 15 t ha-1
. Thus, our study
demonstrates that supplemental NPK with FYM is an effective strategy to boost the drought tolerance through
improved RUE and biomass accumulation in maize.
In order to alleviate the drought adversities on maize (Zea mays L.)biomass accumulation and radiation use efficiency (RUE), a field study was conducted under drought stress levels of D1 = well-watered, D2 = drought stress at blister stage, D3 = drought stress at blister and dough stages; and integrated nutrition levels, N0 = control, N1 = NPK, 125-60-62 kg ha-1, N2 = NPK, 125-60-62 kg ha-1 + FYM at 10 t ha-1, N3 = NPK, 125-60-62 kg ha-1 + FYM at 15 t ha-1, N4 = NPK, 250-120-125 kg ha-1, N5 = NPK, 250-120-125 kg ha-1 + FYM at 10 t ha-1, N6 = NPK, 250-120-125 kg ha-1 + FYM at 15 t ha-1. Drought stress caused a significant decline in growth traits, interception of photosynthetically active radiation (PAR), RUE and finally biomass production. The highest leaf area index, leaf area duration, crop growth rate, net assimilation rate, interception of PAR and dry matter accumulation was recorded in plants applied with NPK (250-120-125 kg ha-1) in combination with FYM (15 t ha-1), whereas only NPK application did not significantly improve light interception and dry biomass production. Fraction of intercepted (Fi) radiation was significantly improved by integrated nutrient management under well-watered as well as drought stress conditions. A substantial decrease in total dry matter and grain yield basis RUE was recorded from higher to lower plant nutrition rates, as the highest value of RUE was found with treated plants of 250-120-125 kg NPK ha-1 + FYM at 15 t ha-1. Thus, our study demonstrates that supplemental NPK with FYM is an effective strategy to boost the drought tolerance through improved RUE and biomass accumulation in maize.
Primary Language | English |
---|---|
Journal Section | Articles |
Authors | |
Publication Date | May 15, 2017 |
Published in Issue | Year 2017 |
Turkish Journal of Field Crops is published by the Society of Field Crops Science and issued twice a year.
Owner : Prof. Dr. Behçet KIR
Ege University, Faculty of Agriculture,Department of Field Crops
Editor in Chief : Prof. Dr. Emre ILKER
Address : 848 sok. 2. Beyler İşhanı No:72, Kat:3 D.313 35000 Konak-Izmir, TURKEY
Email : turkishjournaloffieldcrops@gmail.com contact@field-crops.org
Tel : +90 232 3112679
Tel/Fax : : +90 232 3432474