[The influence of growing nitrogen, phosphorus and potassium amounts on dynamics of beet and sugar production and taking out mineral substances by the yield of sugar beet varieties]
1984
Lazovic, D.
The investigation was conducted on heavy arillaceous earth, which was slightly acid, very poor in easy accessible phosphorus, very good supplied with easy accessible potassium and had the optimal content of humus. The total atmospheric precipitations were enough but irregularely distributed during the vegetation season. The next conclusions were made according to 4 year investigations: The dry matter (dm) in root was increasing during the vegetation season and got its maximum at the end of growing season. N, P and K fertilizers had positive influence on forming dm in plant. The N, P, K concentration in plant depended on plant's organs, phases of growth and development, fertilizing and insignificantly on variety. The collecting of N, P and K in root was increasing till the end of vegetation season; in leaf it came to maximum on the 1st of August. The maximal quantity of N, P and K, disregarding the varieties and variants of fertilization was: nitrogen in the whole plant 119,6 kg N/ha, by root 58,9 kg, by leaves 46,1 kg and leaf stems 14.6 kg; phosphorous in the whole plant 27,1 kg P2O5/ha, by root 15,9 kg, by leaves 7,6 kg and by leaf stems 3,6 kg; potassium in the whole plant 245,5 kg K2O/ha, by root 103,2 kg, by leaves 89,3 kg and by leaf stems 53,0 kg. The sugar beet yield depended on fertilizing weather conditions, time of digging and variety; the qualitative technological characteristics of sugar beet root depended also on fertilizing, time of digging and variety.
Показать больше [+] Меньше [-]Ключевые слова АГРОВОК
Библиографическая информация
Эту запись предоставил Unassigned data from Yugoslavia