Fertilizing cotton with calcium superphosphte combined with rock phosphate and its effect on cotton productivity and soil fertility
Abstract: Two field experiments were conducted at Sids Agricultural Research Station, Beni Swif Governorate, Egypt in 2012 and 2013 seasons to study the effect of two phosphorus sources namely calcium superphorphate (CaP) and rock phosphate (RP) on cotton growth (plant height and number of fruiting branches/plant), yield components (number of open bolls plant, boll weight and seed index), earliness and lint percentage, seed cotton yield, fiber properties (micronaire reading and pressly index) and some chemical contents of cotton leaves (N, P and K percentage , chlorophell (A and B) and carotenoids contents) as well as the availability of N, P and K in soil. The treatments were: control (without P application), 10 kg P as CaP, 20 kg P as CaP, 150 kg RP, 300 kg RP, 10 kg P as CaP + 150 kg RP, 20 kg P as CaP + 150 kg RP, 10 kg P as Ca P + 300 kg RP and 20 kg P as CaP + 300 kg RP/fed.
The results show that treatment of 10 Ca P + 300 kg RP/fed, recorded the highest values of plant height, number of fruiting branches/plant, number of open boll, boll weight, earlines percentege and seed cotton yield as well as N, P concentration, chlorophell A and chlorophell B and carotonoids in cotton leaves, which on par with those obtained by 20 kg CaP alone or in combined with 150 or 300 kg RP/fed. On the other hand seed index, lint percentage, fiber properties and K concentration in cotton leaves. The availability N and K in soil after harvest did not affect by phosphorus treatments. Moreover, phosphorus availiability in soil affected only by rock phosphate application, where 300 kg RP/fed recorded the highest values. This results means that, it could be save about 10 kg calcium superphosphate by using rock phosphate without any drop of cotton productivity
Publication year 2014
Pages 197
Organization Name
serial title Egypt. J. Agric. Res., 92 (1), 2014
Author(s) from ARC
External authors (outside ARC)
    صابر شعبان عبد الجيد 1. معهد بحوث القطن ـ مركز البحوث الزراعية ـ الجيزة ـ مصر
AGROVOC
TERMS		 Cotton. Growth. Yield components. Yields.
Publication Type Journal
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