Effect of irrigation scheduling and nitrogen fertilization on some quality parameters onion (Allium cepa L.)

V. Petrova, Iv. Mitova, V. Vasileva, N. Dinev

Abstract: During the period 2016 years were carried out the fields experimental studies with onion (Allium cepa L.) crop within the experimental field Chelopechene the Institute of soil science, agrotechnologies and plant protection “N. Pushkarov” on leached cinnamon forest soil. They were examined 11 variants with different irrigation technologies in an optimal and water deficit irrigation scheduling of onion and control variant without irrigation and fertilization. Along with irrigation water is made with ammonium nitrate fertilizers with different rates of fertilization N5 and N10 active substance in kilograms of nitrogen per decar. The method of betting experience is two-factorial fields experiment with three repetitions. Results are available about the effects of different irrigation and fertilization rates on chemical quality indicators (NO3, sugars% and SDA%) of the resulting products.

Keywords: chemical quality indication; fertilization; irrigation scheduling; irrigation technologies; onion

Date published: 2017-07-26