Optimizing Nitrogen Sources and Tillage Practices for Wheat Crop Stand and Phenology
Optimizing Nitrogen Sources and Tillage Practices for Wheat Crop Stand and Phenology
Arsalan Khan1, Aminullah Khan2, Dil Fayaz Khan2, Sajid Khan1, Anjum1, Waqar Ali3, Habib Akbar1 and Ahmad Khan1*
ABSTRACT
Nitrogen application has a significant impact on wheat crop phenology and crop stand. To optimize nitrogen sources i.e. urea, farmyard manure (FYM) and poultry manure (PM) for improving wheat phenology and crop stand, an experiment was conducted at Agriculture Research Station Perdal Khel, Bannu (South part of Khyber Pakhtunkhwa, Pakistan) during 2016-17. The soil of the experimental area was Loamy sand with Haplic yermosols soil series based on FAO classification. The experiment comprised of three tillage practices i.e. Shallow tillage (ST), Conventional tillage (CT) and Deep tillage (DT) and eight nitrogen treatments (Control, 100% Urea, 100% FYM, 100% PM, 50% Urea/FYM, 50% Urea/PM, 50% FYM/PM and 33.33% each PM/FYM/Urea). These ratios provided a total of 120 kg N ha-1. The wheat cv. Pakhtunkhwa-2015 was sown with seed of 120 kg ha-1. The CT resulted in early phenology (days to emergence (11.5 days), booting (105 days), anthesis (116 days), and physiological maturity (155 days) whereas, DT delayed the phenological events. Among nitrogen ratios sole use of urea had delayed booting (108.1 days), anthesis (122.9 days) and physiological maturity (162.5 days) stages, whereas different ratios of Urea, FYM and PM resulted in early phenological observations. The use of urea, FYM and PM (33.33% each) had produced more tillers m-2 (288 tiller m-2) as compared to sole source or control plots. Conclusively, CT performed better than DT for wheat crop phenology and crop stand. Similarly, Urea, FYM and PM applied in equal ratio improved crop stand whereas sole urea delayed phenology of wheat crop. Thus, it is recommended that 120 kg N ha-1 supplied as 33.3% from urea, FYM and PM combined with CT practice is more favorable production technology to improve crop stand of wheat.
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June 2021
Vol. 37, Iss. 2, Pages 331-713
