Future of Egyptian cotton production in the newly reclaimed desert land of Egypt [electronic resource]: Response of cotton to inoculation with phosphate-solubilizing bacteria and soli phosphorus application.

Includes references.

This is the eighth part in a series of studies aiming at helping the cotton growers in the desert regions. Two field experiments were conduCted on highly calcarious sandy clay loam soil at Nubaria Agric. Res. Stn. during 1999 and 2000 seasons to study the response of extra-long satple cotton cultivar Giza 70 to inoculation with a phosphate- solubilizing bacteria (PSB), i.e., 'Phosphorin' as Egyptian commercial biofertilizer compared to non-inoculation treatment on some plant growth attributes, earliness parameters, seed cotton yield/fed, its components, fiber properties and net income values/fed under the three levels of phosphorus (P) fertilizers (7.5, 15 and 22.5 kg P205/fed). The results indicated that application of 22.5 kg P2O5/fed significantly increased earliness parameters, number of open bolls/plant, seed cotton yield/plant seed cotton yield/fed, total costs/led, income/fed, consequently net income/fed in the two seasons, While, P fertilizer levels had insignificant effects on boll weight, lint percentage in one season only, plant height number of sympodia/plant, number of plants/fed at harvest and fiber properties in the two seasons. Application of 'Phosphorin' biolertilizer significantly increased plant height number of sympodia/plant, earliness parameters, seed cotton yield/fed, its components, net income and its components compared with non-inoculation treatment in bath 1999 and 2000 seasons. On the other hand, biofertilizer treatments had insignificant effect on number of plants/fed at harvest, lint percentage and fiber properties in the two seasons.

Summary in Arabic.

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