Limitations of soil water and nitrogen (N) are factors which cause a substantial reduction in cotton (Gossypium hirsutum L.) yield, especially in an arid environment. Suitable management decisions like irrigation method and nitrogen fertilization are the key yield improvement technologies in cotton production systems. Therefore, we hypothesized that optimal water-N supply can increase cotton pl...

In identifying and diagnosing cotton disease the pattern of disease is the important part. Various features of the image can be extracted viz. color of the infected part and by applying various color windows to the disease image and after that we obtained the vector value for this image, also similar procedure is applied for the normal cotton leaf image and that values compared with one another...

The article is devoted to the cleaning of tobacco leaves by leaf-by-leaf method, using a roller-type separating device acting on object with drum knife having cutting edges, forming leaf-separating cells in working area. subject these studies highly specialized and relates field agricultural engineering. Tobacco plants were selected as processing. purpose research was theoretical substantiation...

Two parental lines of Upland cotton (Gossypium hirsutum L.) plus their reciprocal F(1), F(2), and backcross populations were field-tested for environmental and genetic components of leaf diffusive resistance. Leaf resistance was measured with a diffusion porometer three times each day during 6 days in August. A large, consistent environmental component was present during the morning, afternoon,...

Genetically modified (GM) cotton plants that effectively control cotton boll weevil (CBW), which is the most destructive cotton insect pest in South America, are reported here for the first time. This work presents the successful development of a new GM cotton with high resistance to CBW conferred by Cry10Aa toxin, a protein encoded by entomopathogenic Bacillus thuringiensis (Bt) gene. The plan...

While Evans-Pritchard was conducting his now-famous studies of the Azande and the Nuer in southern Sudan, changes were taking place in the great plains between the two Niles south of Khartoum that would forever alter the course of Sudanese history. In partnership with multinational capital, the British were turning millions of acres inhabited by farmers and pastoralists into a vast irrigation p...

Critical growth stage of cotton crop was investigated by artificially imposing water stress under field conditions. The crop was given water deficit stress for a period of 30 days at squaring (SS) and first boll split (BS) phases by maintaining the leaf water potential (yw) at –2.2+0.2 MPa whereas in control plots yw was maintained at -1.6+ 0.2 MPa by irrigation scheduling. The average irrigati...

Identifying more cost effective and perceived environmentally friendly techniques for cover crop management can increase their use. This study was conducted to determine the effectiveness and economic viability of using a mechanical rollercrimper as an alternativekillmethod for cover crops. Three cover crops, rye (Secale cereale L.), wheat (Triticum aestivum L.), and black oat (Avena strigosa S...

Whole plant defoliation studies were performed using dark red kidney bean (Phaseolus vulgarisL.) to compare the effect of cyclanilide [1(2,4-dichlorophenylaminocarbonyl)-cyclopropane carboxylic acid], ethephon (2-chloroethylphosphonic acid), auxin transport inhibitors, and temperature on leaf abscission. Ethephon induced bean leaf defoliation, but ethephon combinedwith cyclanilide induced great...