EFFECT OF MINERAL NITROGEN FERTILIZING ON SEED PRODUCTIVITY OF LUCERNE IN CONDITIONS OF WATER DEFICIENCY STRESS | Влияние на минерално азотно торене върху продуктивността на семена от люцерна в условия на водно-дефицитен стрес
2010
Vasileva, V., Institute of Forage Crops, Pleven (Bulgaria)
In the Institute of Forage Crops, Pleven during the period of 2003-2004 in a pot trial was studied the effect of mineral nitrogen at the doses of 40, 80, 120 and 160 mg N/kg on seed productivity of lucerne under provoked water deficiency stress at the stage of budding. It was found that mineral nitrogen fertilizing increased the seed productivity under optimum moisture, as well as under water deficiency stress. Mineral nitrogen fertilizing, applied at the dose of 160 mg N/kg soil increased the seed productivity by 24% under optimum moisture, and applied at the doses of 120 and 160 mg N/kg soil, by 27 and 34% under water deficiency stress. Mineral nitrogen fertilizing influenced on the structural elements of seed productivity, too. With increase of the doses for optimum moisture, the number of pods increased to 41%, number of racemes to 26%, weight of generative stems to 25%, and weight of 1000 seeds to 19%. For the conditions of water deficiency stress, the number of pods increased to 57%, number of racemes to 44%, weight of generative stems to 28%, and weight of 1000 seeds to 20%. The effect of mineral nitrogen fertilizing on the germination energy and germinability of the seeds was insignificant 6-7%.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
المعلومات البيبليوغرافية
تم تزويد هذا السجل من قبل Institute of Agricultural Economics