الفهرس 
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Abstract
Abstract
A field experiment was carried out during the two successive summer seasons of 2017and 2018 in private sector farm at Kom Hamada city, Beheira Governorate, Egypt to investigate the effect of organic fertilizers tea (Chicken manure tea , Rabbit manure tea , Compost tea, Biochar tea and without organic fertilizers tea) as soil additions and foliar spray with boron at 0, 50 and 100 mg L-1 as well as their interaction on growth, chemical constituents of plant foliage, yield and quality of potato tubers (Solanum tuberosum L.) cv. Bellini. The soil addition of tea treatments were added three times at rate 100ml /plant started after 30 days from planting and every 15 days intervals. While the foliar spray of boron were done three times after 45 days from planting and every 15 days intervals. Obtained results showed that, soil addition with chicken manure tea and foliar spray with high concentration of boron (100 mg L-1) gave the highest values in vegetative growth parameters and the highest N, P, K, B and total carbohydrates content in plant foliage. Moreover, application of either chicken manure or rabbit manure tea with the recommended rate of NPK and foliar spray with boron at 100 mg L-1 recorded the highest increases in the tuber yield of potato. But the best physical quality and chemical components of potato tubers (N, P, K, carbohydrates and starch) verified when using chicken manure tea and foliar spray with boron at 100 mg L-1 compared with all other treatments and in both seasons.
Keywords: Potato; Organic fertilizer tea; Boron; Chicken manure tea; Rabbit manure tea; Compost tea; Biochar tea; tuber quality