This study was initiated during 1999 /2000 and 2000 /2001 seasons to select the optimum rate of N, P and K through fertigation for Williams banana. Fifteen N : P : k ratios were applied.Results showed that there was great differences on growth aspects, yield and finger characteristics with varying N : P : K ratios. Since increasing N and K rates from 100 to 500 g /plant and P from 100 to 300 g /plant caused a remarkable promotion on all studied parameters. Meaningless promotion on all the tested characters was ascribed due to raising N and K from 400 to 500 g /plant and P from 200 to 300 g /plant.The best results with regard to growth, nutritional status of the plants, yield and fruit quality of Williams banana were obtained due to fertilizing the plants with N : P : K at 400 : 200 : 400 g /plant via fertigation (at 14 equal batches for N and four equal batches for both K and P).
MATERIALS AND METHODSThis investigation was carried out during the two consecutive seasons of 1999/2000 and 2000/2001 in a private orchard at Kom Ombo district, Aswan Governorate. The experimental work started on the second and third ratoons. The stools are planted at a spacing of 2.25 meters and were thinned
This experiment was conducted during 2014 and 2015 seasons in a Private Orchard at Hirriyat Resznah Village, Sharkia Governorate, Egypt, to study the effect of different methods of fertilization with some minor elements (iron-Fe and boron-B) namely foliar application, trunk injection and soil application on yield and fruit quality of Samany date palm grown in clay soil under flood irrigation. Results indicated that date palm injection stem with Fe+B recorded the highest values of yield/palm, bunch weight, number of fruits/strand, average fruit weight, TSS, total and non reducing sugars and Vit. C content. The application of Fe + B in leaves axiles with abaxial bunch increased N, P contents and total protein in mature fruits in both seasons. Fe and B concentrations in fruits and pinnaes were the highest with the trees which sprayed Fe+B on bunch. Soil application with Fe+B was the superior treatment in increasing the contents of N, P, K and the concentration of Fe and B in roots of palm than other application method treatments. On the other hand, control treatment (untreated palms) recorded the highest values of total tannins in fruits and lowest values of all abovementioned traits in both seasons.
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