To understand the effect of heat stress on morphology and physiology cotton, eight cotton genotypes with their 15F1 hybrids (five lines, three testers) were grown in field conditions under randomized complete block design (RCBD) two treatments i.e. normal high-temperature stresses replications followed by split-plot arrangement. Data collected for biochemical yield-related parameters. Mean valu...

in order to determine the best time of cotton irrigation in east of mazandaran province, an experiment, conducted for 3 successive years in agricultural research station of baykola. six treatments and four replications were carried out with randomized complete block designs for sahel variety. water treatments were carried out based on, i0: no irrigation, i1: once irrigation in boll opening stag...

Year to year change in weather poses serious threats agriculture globally, especially developing countries. Global climate models simulate an increase global temperature between 2.9 5.5 °C till 2060, and crop production is highly vulnerable warming trends. Extreme causes a significant reduction yields by negatively regulating the phenology. Therefore, evaluate impact on cotton (Gossypium hirsut...

COTMAN, a crop monitoring program for cotton, uses the concept of 350 heat units after anthesis of the last effective flower population at NAWF=5 for termination of insecticide applications. Research and field observations have indicated that terminating insecticides at 350 heat units after physiological cutout (NAWF=5) results in a higher yield than when terminating earlier or later, although ...

Phytophagous stink bugs are economically important pests of annual and perennial crops in the southeastern United States. Because of insecticide resistance and risk of secondary pest outbreaks, there is interest in identifying cultural practices that could lead to reduced insecticide applications. The objective of this project was to assess the importance of cotton planting date on stink bug da...

The feeding and oviposition activity of overwintering boll weevils,Anthonomus grandis grandis (Boheman), and seasonal ßuctuations in development, survival, and reproduction of progeny of overwintering and Þrstand second-generation boll weevil females were determined in the laboratory at 27 C, 65% RH, and a photoperiod of 12:12 (L:D) h. During the cotton-free period in the Lower Rio Grande Valle...

Purpose. Select valuable samples from the collection of cotton on basis “number open bolls per plant” and “weight raw one boll” for further use in breeding process when creating new varieties their impact productivity. Methods. During 2002–2019 fields selection crop rotation department Institute Irrigated Agriculture National Academy Sciences, 282 different ripeness groups were studied. Results...