Effect of some microbial and mineral fertilizers on quality and storage ability of "anna" apple fruits [electronic resource].

Includes references.

The effect of microorganism biofertilizers beside mineral fertilizers with the hope of decreasing the use of mineral fertilizers, on fruit quality and storability was studied. Seven years old " Anna" apple trees budded on MM. 106 rootstock grown at a newly reclaimed sandy soil, were involved in this study. The obtained results indicate that all biomicrobial fertilizer treatments improved fruits TSS while did not affect fruit texture, acidity and fruit color (L * & a* value) whereas caused a reduction in b* value. F3 treatment which received microbial fertilization + 25 % of recommended mineral fertilizers had fruits highest the loss of weight %, decay %, TSS %, while (F2) treatment which received microbial fertilization + 50 % of recommended mineral fertilizers significantly decreased fruit firmness. Moreover, Storage period intervals gradually increased loss of fruit weight % and TSS while, decreased fruit firmness, texture and acidity %. There was no clear trend of storage intervals on fruit color (a* and b* value) during storage in both seasons. Besides, no decayed fruits were obtained until 60 days of storage W1der 0°C. Records of (L* value) increased gradually from 0 day up to 60 days since their records significantly decreased at 80 days interval then resumed the increase at 100 days of storage period. At 0 day, fruit color (a* and b* value) and TSS recorded the lowest values, while acidity % was the highest. Although, 20 and 40 days of storage intervals recorded the highest a. and b* values, respectively. 100 days storage recorded the lowest values of acidity. These study showed that using microbial fertilizers beside 50 % of recommended mineral fertilizers give the more preferable dose in producing fruits with high quality and long storageability.

Summary in Arabic.

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