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SM ISO690:2012 BALAN, Valerian, VĂMĂŞESCU, Sergiu, PEŞTEANU, Ananie, BALAN, Petru. Influența fertilizării foliare asupra răririi fructelor și recoltei la soiul de măr Golden Delicious. In: Ştiinţa Agricolă, 2019, nr. 1, pp. 47-51. ISSN 1857-0003. |
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Ştiinţa Agricolă | |||||
Numărul 1 / 2019 / ISSN 1857-0003 /ISSNe 2587-3202 | |||||
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CZU: 634.11:631.84 | |||||
Pag. 47-51 | |||||
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The investigations have been carried out in the period 2008-2013 using the apple variety Golden Delicious grafted on the M26 rootstock. The planting distance of trees was of 4x2 m (1250 trees/ha). Ochard soil is maintained as worked fallow. Nitrogen was used as Urea 46% N active substance (NH2)2CO in the concentrations of 0.4%, 0.5% and 0.6%, using about 1000 l of solution per hectare, when 75% of the flowers are open and until the flowers lose their first petals. The trees sprinkled with water served as a control variant. Spraying was done in the morning with the portable sprayer, when the wind speed is minimal and the temperature is lower. The use of Urea 46% N, in the blooming phenophase, has a double effect, both of the flower thinning and the growth of the fruit. The highest values of fruit harvest were recorded by the trees that have been treated with foliar fertilization if the solution was applied in concentrations of 0.5% and 0.6% was applied. |
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Cuvinte-cheie Apple, Malus domestica, urea, Flower thinning, Fruit, weight, harvest, Măr, Malus domestica, uree, Rărirea florilor, Fruct, Masă, recoltă |
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