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Assessment of the Consequences of Heat Changes on Cotton Cultivars Growth, Phenology and Yield at Different Sowing Regimes

Kanwar Muhammad Raheel Mehboob1, Rashid Iqbal2*, Muhammad Israr3,4, Jaweria Shamshad5, Umair Riaz6, Muhammad Habib-ur-Rahman7,8, Fawad Ali9, Arif Nawaz10, Maliha Sarfraz11, Abdul Waheed12, Muhammad Tahir Khan13 and Muhammad Aslam2


1Department of Agronomy, University of Agriculture Faisalabad, Pakistan; 2Department of Agronomy, The Islamia University of Bahawalpur, Pakistan; 3Institute of Pure and Applied Zoology, Department of Biochemistry, University of Okara, Pakistan; 4College of Life Science, Hebei Normal University, Shijiazhuang, 050024 Hebei, PR China; 5College of Earth and Environmental Sciences, University of the Punjab, Lahore; 6Soil and Water Testing Laboratory for Research Bahawalpur-6300, Agriculture Department, Government of the Punjab, Pakistan; 7Institute of Crop Science and Resource Conservation (INRES) Crop Science Group, University Bonn, Bonn, Germany; 8Department of Agronomy, Muhammad Nawaz Shareef University of Agriculture, Multan, Pakistan; 9Institute of Chemical Sciences, University of Peshawar, Pakistan; 10Department of Chemistry, Bacha Khan University Charsadda, Khyber Pakhtunkhwa, Pakistan; 11Institute of Physiology and Pharmacology, University of Agriculture Faisalabad, Pakistan; 12Department of Botany, Bacha Khan University Charsadda, Khyber Pakhtunkhwa, Pakistan; 13Nuclear Instituteof Agriculture (NIA), Tando Jam, 70060, Pakistan.

*Correspondence | Rashid Iqbal, Department of Agronomy, The Islamia University of Bahawalpur, Pakistan; Email:


Temperature is the main climatic factor that influences the yield just as entire development of farming crops. All periods of phenology of crops are temperature sensitive. Hence, information on appropriate temperature for best yield is significant so as to get maximum production. In current examination, a field test was directed to evaluate the phenology, relative development, ideal sowing time, comparative growth just as yield execution of three cultivars of Bacillus thuringiensis Cotton (Bt. Cotton) at different sowing systems during summer 2015 at cotton research station Regional Agriculture Research Institute Bahawalpur (RARI) Pakistan. The test was directed in an irregular complete block design (RCBD) with a split-plot course of action comprising of three replications. One factor comprised of six planting dates (for example April15 and 30, 15 and 30 May, 14 and29 June) and other factor comprising of three Bt. cotton cultivars (BH-184, MNH-886 and CIM-598). The after effects of the test indicated that both sowing dates and cultivars fluctuated fundamentally for development, phenology and yield. Highst leaf area index (LAI) 4.38, total dry matter (TDM) 1033 g m-2, leaf area duration (LAD) 275.6 days and mean harvest development rate 6.51g m-2 day-1 were recorded on April 30 sowing. Yield contributing boundaries like opened boll, average boll weight and 100-seed weight altogether shifted and highest seed cotton yield 3847 kg ha-1 was acquired by cv. MNH-886 when it was planted on April 30.

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Pakistan Journal of Agricultural Research


Vol. 35, Iss. 2, Pages 259-476


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