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Home > Mitigation of Drought Stress in Maize Hybrid Through Different Nutrient Management Strategies

Mitigation of Drought Stress in Maize Hybrid Through Different Nutrient Management Strategies

Thesis Info

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Author

Hussain, Sajid

Program

PhD

Institute

University of Agriculture

City

Faisalabad

Province

Punjab

Country

Pakistan

Thesis Completing Year

2016

Thesis Completion Status

Completed

Subject

Agricultural Technology

Language

English

Link

http://prr.hec.gov.pk/jspui/bitstream/123456789/9627/1/sajid_Hussain_Agronomy_UAF_2016.docx

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676726647897

Similar


Macronutrients (N, P, and K) along with micronutrients particularly zinc promote successful crop growth under drought stress. Zinc (Zn) is an essential micronutrient involved in photosynthesis and as an enzyme antioxidant-cofactor. Its deficiency may cause severe growth reduction and may also delay the crop maturity. Drought stress is the principal threat to crop productivity worldwide. Approximately, one third of the cultivated area of the world suffers from perpetual drought. Drought stress is an alarming global issue with severe consequence to human well being. In Pakistan, yield of maize (Zea mays L.) is often reduced by drought, and the severity of the problem may increase due to the protected climate change. Therefore, developing different approaches to mitigate drought stress are inevitable to minimize the losses in crop production. This study was conducted at the Agronomic Research Area, University of Agriculture, Faisalabad, Pakistan during spring of 2013/2014. For this, a 2-year field study was conducted to assess the effects of drought on maize hybrid growth, productivity, and yield level changing, etc. It was adjusted as a randomized complete block design to assess the yield variation of the hybrid maize involving a split plot arrangement with three replications. Three soil moisture regimes were maintained as main plot and included: (I1) well-watered treatment, (I2) mild drought with 25 mm of potential soil moisture deficit (PSMD), and (I3) severe drought with 50 mm of PSMD. Nutrients levels were laid out as sub-plots and included:T1 (Control), T2 (200 kg ha-1 N), T3 (300 kg ha-1 N), T4 (12 kg ha-1 Zn), T5 (200 kg ha-1 N + 12 kg ha-1 Zn), T6 (300 kg ha-1 N + 12 kg ha-1 Zn) in first experiment, while in 2nd experiment sub plots treatments were as follows (T1) control, (T2) 100 kg ha-1 K, (T3) 150 kg ha-1 K, (T4) 12 kg ha-1 Zn, (T5) 100 kg ha-1 K + 12 kg ha-1 Zn, and (T6) 150 kg ha-1 K + 12 kg ha-1 Zn.All of the allometric and agronomic parameters like leaf area index, leaf area duration, crop growth rate, plant population, number of grain rows cob-1 and 1000- grain weight were strongly affected by drought. Obtained results were showed that application of Zn with higher doses of N and K strongly improved of the maize root growth, and it was the most cost-effective approach under drought stress conditions. The highest grains yield of (8.57 t ha-1 and 8.12 t ha-1 in 2013 and 8.76 t ha-1 and 8.04 t ha-1 in 2014) were obtained by (I1T6) treatment combination which was resulted in well-watered and fertilized plot with higher doses of nutrients during 2013/2014. Hence, higher rates of N and K with Zn can be used to enhance maize production and net income under well-watered field conditions.
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غزل

بے رنگ ریگ زار میں جینا پڑا ھمیں

دشمن کے اختیار میں جینا پڑا ھمیں

تاریکیوں میں ایک کرن بھی نہ مل سکی

لگتا ھے جیسے غار میں جینا پڑا ھمیں

جیون کی الجھنوں کونہ سلجھا سکے کبھی

اک عمر خلفشار میں جینا پڑا ھمیں

جب یہ کھلا فریب ھے یہ ساری کائنات

مرنے کے انتظار میں جینا پڑا ھمیں

اس کے لئے شکست بھی ھم نے قبول کی

اک روز اپنی ھار میں جینا پڑا ھمیں

اڑتی رھی ھے دھول دلوں سے نگاہ تک

تنہا اسی غبار میں جینا پڑا ھمیں

ھم نے سلگ سلگ کے گذاری ھے زندگی

اک آگ کے حصار میں جینا پڑا ھمیں

اک پل جہاں ٹھہرنا گوارا نہ تھا نوید

برسوں اسی دیار میں جینا پڑا ھمیں

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Impact of Organizational Culture on Employee Performance, Mediating Role of Employee Commitment

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