Effect of pre-winter sowing on earliness and yield of spinach

Abstract

The paper deals with the effect of pre-winter sowing on earliness and yield of spinach. Sowing was conducted late in the autumn (November-December), i.e. before harsh frosts. Spring sowing served as the control. It was established that pre-winter sowing significantly increased the earliness of spinach and decreased its yield. Due to favorable effect on earliness, pre-winter sowing should be applied in the production of this vegetable. Early spinach is a commodity which is highly requested on the market and is placed on the market at a high price.

Spanać je ispitivan u rejonu Beograda (Radmilovac). Ispitivanja su trajala od 1994/95. do 1996/97. godine. Korišćena je predzimska i prolećna setva (kontrola). Predzimska setva je značajno povećavala ranostasnost spanaća. To se najviše ispoljilo u 1994/95. godini (blaga zima), gde je predzimski spanać bio ranostasniji za 24 dana. Na drugom mestu je 1996/97. godina, sa ostvarenom razlikom od 18 dana. U 1996/97. godini predzimski spanać je bio uspešniji za 6 dana. To nije slučajno, jer se radi godini koja nije bila naklonjena spanaću (hladno, vlažno vreme). U celini gledano, predzimska setva je povećala ranostasnost spanaća za 16 dana. Spanać je davao dobar prinos. Prolećna setva je bila osetno uspešnija, a razlika iznosi 3,71t/ha. Prinos je u proseku dostigao 12,35 t/ha (10,49 i 14,20 t/ha). .