Record ID No. |
896 |
Author(s) |
Zohry,A.A , 2005 |
Affiliation |
Crop Intensification Research Sec. Field Crops Research Institute, A.R.C., Dokki, Giza, Egypt. |
Title |
Effect of relaying cotton on some crops under bio-mineral N fertilization rates on yield and yield components |
Source. Vol.(no):Page |
Annals-of-Agricultural-Science,-Moshtohor. 43(1): 89-103p. |
Categories |
Mycorrhiza General |
Subjects |
Soil plant relations |
Sub-subjects |
Cropping effect |
Host |
Allium cepa, Vicia faba, Triticum aestivum, Gossypium |
Organism |
Azospirillum, Azotobacter, Bacillus megaterium, Pseudomonas |
Country |
Egypt, Africa |
Abstracts |
Two field experiments were carried out in Middle Egypt during 2002/03 and 2003/04 seasons to investigate the effects of cropping systems and N rates on yield and yield components of cotton (cv. Giza 83) relayed with some crops (onion cv. Giza 6, faba bean cv. Giza 2 and wheat cv. Giza 168). Four cropping systems were arranged in the main plots: solid cotton, cotton relayed on onion, cotton relayed on faba bean and cotton relayed on wheat, while 6 N treatments were arranged in the subplots (30, 45, 60 kg N/fed, 30 kg N+Microbin (Azospirillum sp., Azotobacter sp., Bacillus megaterium var. phosphaticum, Pseudomonas sp. and mycorrhiza) at 1 g/100 g seeds, 45 kg N+Microbin and 60 kg N/fed+Microbin). Relaying cotton had a significant effect on cotton traits and yield. Plant height, number of open bolls per plant, number of fruiting branches per plant, seed cotton yield per plant and seed cotton yield/fed. The pure stand of cotton was superior to all other relayed pattern followed by that relayed on faba bean, while the lowest values were observed when cotton was relayed on wheat. Increasing N level from 30 to 60 kg N/fed increased all the cotton traits. Similarly, inoculation with Microbin significantly increased all the traits compared with the uninoculated cotton. Application of Microbin+60 kg N/fed resulted in the highest values, whereas the lowest values for all growth traits of cotton were obtained with 30 kg N/fed. Solid cotton supplied with Microbin+60 kg N/fed was superior in all traits, followed by cotton plants relayed on faba bean and received Microbin+60 kg N/fed. The intercrops were significantly affected by the cropping systems. The cropping systems reduced yield/fed of onion, faba bean and wheat compared to those grown in monoculture. Cotton relayed on faba bean had the highest land equivalent ratio (1.82) while cotton relayed on onion had the highest gross benefit (11 605.5) and net return (7055.5). |