Evaluation of Weeds Density for Local and Chinese Lines in Northern Pakistan Under Different Sowing Intervals
Evaluation of Weeds Density for Local and Chinese Lines in Northern Pakistan Under Different Sowing Intervals
Bismillah Khan1*, Muhammad Mehran Anjum1,2*, Maaz Ullah1, Izharullah1, Aftab Ahmad3 and Jawad Akbar1
ABSTRACT
Climate change adversely affect the pattern of temperature and distribution of rainfall due to which the incidence of new weeds occurs which cause a serious threat to our main crops. A study was carried out on “Evaluation of weeds density for local and Chinese lines in northern Pakistan under different sowing intervals” during winter season 2020-2021. The experimental design was used randomized complete block (RCB) with split plot arrangement replicated thrice. Treatments were consisted of sowing dates (1st November, 16th November and 1st December 2020) and wheat lines (MY409-4, MY1617, MY1416, MY291-4, MY1501, MY1419 and MY902) with one local wheat check (PS-15). Sowing dates were assigned to the main plot and wheat lines to the sub plot. Results indicated that local check PS-15 resulted in higher weeds density (79.6 plants m-2), (64.0 plants m-2) and (39.6 plants m-2) 30, 60 and 90 DAS, respectively. Similarly, local check PS-15 produced higher weeds fresh weight (219.6 g m-2), (253.7 g m-2) and (303.0 g m-2) 30, 60 and 90 DAS, respectively. Moreover, weeds dry weight was recorded higher (61.3 g m-2), (88.6 g m-2) and (111.6 g m-2) 30, 60 and 90 DAS in local cultivar PS-15, respectively. Regarding sowing dates, sowing on 1st November resulted in maximum weeds density (67.6 plants m-2), (49.9 plants m-2) and (31.2 plants m-2), weeds fresh weight (209.0 g m-2), (241.0 g m-2) and (288.0 g m-2) and weeds dry weight (51.0 g m-2), (81.4 g m-2) and (101.4 g m-2) 30, 60 and 90 DAS as compared to late sown plots on 1st December. Conclusively, Local check PS-15 produced higher weeds density, weeds fresh weight and weeds dry weight for all tested intervals of weeds infestation while minimum weeds infestation was observed for Chinese elite line MY291-4. Likewise, plots sown earlier on 1st November resulted in increased in weeds density by 21% (30 DAS), 32% (60 DAS) and 30% (90 DAS) as compared to late sowing on 1st December and weed fresh weight was 9% (30 DAS), 13% (60 DAS) and 11% (90 DAS) higher on 1st November sowing than 1st December sowing. Whereas weeds dry weight was recorded 83% (30 DAS), 34% (60 DAS) and 15% (90 DAS) higher than late sowing on 1st December.
To share on other social networks, click on any share button. What are these?
