Influenţa fertilizării foliare asupra răririi fructelor şi recoltei la soiul de măr Golden Delicious

Stiinta Agricola

PEŞTEANU Ananie¹  VĂMĂŞESCU Sergiu¹  BALAN Petru¹  BALAN Valerian¹ 

[1] Universitatea Agrară de Stat din Moldova;

关键词: apple;    malus domestica;    urea;    flower thinning;    fruit;    weight;    harvest;   

DOI  :  

来源: DOAJ

【 摘 要 】

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 inconcentrations of 0.5% and 0.6% was applied.

【 授权许可】

Unknown