Alfalfa Dry Matter Yield Depending On Cultivar, Stage of Growth and Cut

Abstract

The main objective of this study was to assess dry matter productivity of different alfalfa cultivars depending on stage of maturity and cut, as well as the optimal time of harvest to achieve the maximum yield. Dry matter yield of alfalfa and red clover depended on all three factors and their interactions. The local variety of alfalfa, K 28, was more productive (from 6,8 to 2,3 t ha-1 from first to fourth cut, and from 3,4 to 5,5 t ha-1 from first to third stage of development) compared to US variety, G+13R+CZ (from 5,9 to 2,2 t ha-1 from first to fourth cut, and from 2,7 to 5,2 t ha-1 from first to third stage of development). The maximum yield of K 28 variety could be achieved by cutting alfalfa five times a year.

Cilj ovih istraživanja je bio da se utvrdi produktivnost različitih sorti lucerke u zavisnosti od faze razvića i otkosa, kao i optimalno vreme košenja radi postizanja maksimalnog prinosa. Prinos suve materije lucerke zavisio je od sva tri ispitivana faktora i njihovih interakcija. Domaća sorta lucerke je produktivnija (6,8 do 2,3 t ha-1 od prvog do četvrtog otkosa, odnosno od 3,4 do 5,5 t ha-1 od prve do treće faze razvića) u odnosu na američku (5,9 do 2,2 t ha-1 od prvog do četvrtog otkosa, odnosno od 2,7 do 5,2 t ha-1 od prve do treće faze razvića). Maksimalan prinos sorte K-28 mogao bi se postići kosidbom pet puta godišnje.