The yield and chemical composition of cauliflower and lettuce depending on the lupine extract applied and the type of nitrogen fertilizer
2005
Barczak, B. | Nowak, K.,Akademia Techniczno-Rolnicza, Bydgoszcz (Poland). Katedra Chemii Rolnej
Research has been made on a possibility of using a lupine extract, being a waste product of the lupine seed debittering process, in vegetable cultivation. The tested factors included: lupine extract dosages (in kg d.m./ha - 0, 3, 5) applied in one spray in the phase of 5-6 leaves, and a type of inoculated nitrogen fertilizer. There have specified: an object without nitrogen fertilization, an object fertilized with 120 kg N/ha as ammonium nitrate, and a object on which 120 kg N/ha was used in form of magmol, i.e. ammonium nitrate enriched with magnesium and molybdenum. The research revealed a significant effect of the dosage 5 kg d.m. of the extract per hectare on the volume crop of cauliflower. It has been found that both applied dosages of the lupine extract affected the contents of dry matter and N-NO3 in the tested vegetables. A significant and statistically proved decrease in N-NO3 in the vegetables sprayed with the lupine extract solution with reference to the control is worth noticing. The dosages 3 and 5 kg d.m./ha reduced an average content of this form of nitrogen in cauliflower roses by respectively: 14.5 and 19.1 percent, and in the lettuce leaves by: 28.9 and 18.3 percent. The decrease in the N-NO3 content caused by the spray with the lupine extract was accompanied by a significant increase in the content of total nitrogen. The lupine extract spray has differentiated significantly neither the sodium content in both tested vegetables nor potassium and calcium in cauliflower roses. Nitrogen fertilization was a factor that increased the crop of both vegetables and the contents of total nitrogen and N-NO3
Show more [+] Less [-]AGROVOC Keywords
Bibliographic information
This bibliographic record has been provided by Central Agricultural Library