GROWTH, YIELD AND QUALITY OF POTATO CROP AS AFFECTED BY THE INOCULATION WITH VESICULAR- ARBUSCULAR MYCORRHIZAL (VAM) FUNGI UNDER DIFFERENT LEVELS OF PHOSPHOROUS. | ||||
| Journal of Agricultural Chemistry and Biotechnology | ||||
| Article 4, Volume 27, Issue 8, August 2002, Page 5593-5608 PDF (1.45 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jacb.2002.256304 | ||||
 View on SCiNiTO | ||||
| Author | ||||
| E. M. Awad, | ||||
| Vegetable Res. Dept., Hort. Res. Inst., Agric. Res. Center, Giza, Egypt. | ||||
| Abstract | ||||
| Cne.nical fertilizers are commonly added to potato plants to produce high yield although. the use of biofertilizers is more economical and much saving than the use of inorganic fertilizers. which already raised the pollution of the environment. Therefore. this study was conducted in two successive summer seasons of 2000 and 2001 on potato cv. Spunta at Baramoon Experimental Farm, Dakahlia Governorate. Egypt. to investigate the effect of vesicular-arbuscular mycorrhizal (VAM) fungi and four levels of chemical phosphorous i.e., O. 25. 50 and 75 kg P205/fed. as well as to study the interaction on growth, tuber yield and their components of potato plant. Moreover. the contents of NPK in foliage, starch and nitrate in tubers. The obtained results revealed that inoculation potato seed tubers with VAM fungi before planting markedly increased vegetative growth, i.e .. plant height. foliage fresh weighVplant. number of main stems/plant, foliage dry weight, total tuber yield (ton/fed.), number of tubers/plant, tuber average weight. tuber dry matter/plant. NPK contents in foliage and starch content in tubers while, the concentration of nitrate decreased in tuber by using of VAM fungi during both seasons Vegetative growth (plant height, foliage fresh weighVplant, number of main stems/plant) NPK and nitrate contents increased with increasing phosphorous fertilizer at level 75 kg P20s/fed. while, higher value of foliage dry weight, total tuber yield and its component (tuber average weight, tuber dry matter/plant), NPK and nitrate contents in tuber treatment receiving 50 kg PzOs{fed.of P fertilizer. The positive interaction between VAM fungi and phosphorous levels on plant height (in first season), total tuber yield and NP contents in foliage in the two seasons. Generalty, the results indicated that inoculation potato seed tubers with VAM fungi at the rate 12.5 kg/ton) before planting in addition to 50 kg P20s{fed. gave higher total tuber yield/fed. and starch content in tuber. Thus inoculation with VAM fungi before planting raised the efficiency of P fertilizer and would decrease the required rate to plants about by 25 %. Consequently increase the productivity and improving quality of tuber, in addition to produce the pollution of environment. | ||||
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