The PCCC;
Cotton Research Station;
Dera Ismail Khan;
Pakistan;
The PCCC;
Central Cotton Research Institute;
Multan;
Pakistan;
Agricultural Research Institute;
Ratta Kulachi;
Dera Ismail Khan;
Pakistan;
Global Change Impact Study Centre Islamabad;
Islamabad;
Pakistan;
G.; hirsutum; Planting; Time; Cumulative; Heat; Units; Cotton; Cultivars;