000 02903nab|a22003857a|4500
999 _c62159
_d62151
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003 MX-TxCIM
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008 200624s2020||||xxu|||p|op||||00||0|eng|d
022 _a0190-4167
022 _a1532-4087 (Online)
024 8 _ahttps://doi.org/10.1080/01904167.2020.1765181
040 _aMX-TxCIM
041 _aeng
100 1 _aHussain, S.
_914350
245 1 0 _aCombined application of potassium and zinc improves water relations, stay green, irrigation water use efficiency, and grain quality of maize under drought stress
260 _aNew York (USA) :
_bTaylor & Francis,
_c2020.
500 _aPeer review
520 _aMaize (Zea mays L.) plays an important role in the global food security, but its production is threatened by climate change, especially drought stress. Potassium (K) and zinc (Zn) are considered useful to mitigate the negative consequences of drought stress in plants. Therefore, the objective of this two-year study was to identify the best combination of K and Zn application to improve the water relations, photosynthetic pigments, yield, irrigation water use efficiency (IWUE) and grain quality of maize sown under mild and severe drought stress conditions. The consisted of three drought stress levels viz. 1) well-watered as control (WW), 2) mild drought (MD) with 25 mm of potential soil moisture deficit (PSMD), 3) severe drought (SD) with 50 mm of PSMD and six K-Zn treatments: i.e. 125, 100 and 150 kg ha−1 K with 0 and 12 kg ha−1 Zn. The results indicated that K-Zn application improved the water relations and chlorophyll contents, biological yield and grain quality, irrespective of water stress treatment. The combined application of K-Zn under mild drought stress produced statistically same biological yield and grain quality as under well-irrigated without K-Zn fertilization and also produced compratively higher IWUE, biological yield and grain quality under sverer drought stress. Hence, the application of K at 150 kg ha−1 in combination with Zn at 12 kg ha−1 might be useful to improve the maize production and grain quality under drought stress. As IWUE was low in WW conditions, therefore, irrigation scheduling must be re-evaluated for optimum water use efficiency.
546 _aText in English
650 7 _aCrop yield
_gAGROVOC
_2
_91066
650 7 _aDrought stress
_2AGROVOC
_91081
650 7 _aGrain
_2AGROVOC
_91138
650 7 _aPotassium
_2AGROVOC
_95225
650 7 _aZinc
_2AGROVOC
_91315
650 7 _aWater use efficiency
_2AGROVOC
_91307
700 1 _aMaqsood, M.
_914351
700 1 _aIjaz, M.
_914352
700 1 _aUl-Allah, S.
_914353
700 1 _aSattar, A.
_914354
700 1 _aSher, A.
_914355
700 1 _aNawaz, A.
_914356
773 0 _gIn press
_dNew York (USA) : Taylor & Francis, 2020.
_x0190-4167
_tJournal of Plant Nutrition
_wu444568
942 _cJA
_n0
_2ddc