The effect of lupine extract spray on the yield and quality of cucmber fruit
2005
Nowak, K. | Barczak, B.,Akademia Techniczno-Rolnicza, Bydgoszcz (Poland). Katedra Chemii Rolnej
The research showed a significant effect of the lupine extract spray on N-NO3 content in the cucmber fruit collected at each time limit, except for the third one. The effect of this manipulation on the quantity of the tested vegetable crop as well as on the total nitrogen content (except for the second time limit) was not statistically proved. Considering five time limits of the cucumber crop, an average decrease in N-NO3 content with reference to the control for the lupine extract dose applied once amounted to 4.0 percent, and for the dose applied twice-6.8 percent. The highest decrease in accumulating this form of nitrogen was found at the 4th time limit and amounted to app. 12.6 percent for doses applied once and twice. A significant effect of nitrogen fertilization on the quantity of the cucmber fruit crop has been shown, regardless of the type of nitrate. A positive effect of N-fertilization on the total nitrogen content in the tested vegetable has been found, which is generally statistically proved. Statistically proved differences in affecting each nitrate on the mean N-NO3 content have been shown. The application of ammonium nitrate without additional components increased N-NO3 accumulation in cucumber fruit with reference to the control by average 6.3 percent, and the spread of nitrate enriched with magnesium and molybdenum made N-NO3 content decreased by average 10.4 percent
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