EFFECT OF ROW SPACING AND SOWING RATE ON SEED YIELD OF ALFALFA (Medicago sativa L.) UNDER MEDITERRANEAN CONDITIONS

Abstract

The effects of row spacing (25, 50, 75 and 100 cm) and sowing rate (4, 8 and 12 kg ha-1) on alfalfa (Medicago sativa L.) seed yield and its components were investigated under Mediterranean conditions throughout the years of 2008-2011. In the study cultivar Nimet was used and it was evaluated for number of pods per raceme, number of seeds per pod, biomass yield, harvest index, thousand seed weight and seed yield. The results of the study indicated that row spacing and sowing rate significantly affected biomass yield and harvest index but no significant differences were found in pod number and thousand seed weight. Seed yield was significantly affected by sowing rate. The highest and the lowest seed yield were recorded in the first and third years of the experiment, respectively. The highest seed yield averaged over three years was obtained from 25 cm row spacing with 4 kg ha-1 seed rate while the lowest one was obtained from 75 cm row spacing with combining 4 kg ha-1 seed rate. Results of this study suggest that among the various row spacing and seeding rates, narrower row spacings (25 cm or 50 cm) with the lowest seeding rate (4 kg ha-1) were found to be better treatments for alfalfa seed production under Cukurova ecological conditions.

Effect of Plant Spacing on Agronomic Performance and Fodder Quality of Four Tepary Bean (Phaseolus acutifolius A. Gray) Cultivars

“…In contrast to other characters, the harvest index indicated a higher value (45.8) on a wider spacing of 30 cm, preceded by a medium spacing of 20 cm and a lower narrow spacing of 10 cm. Similar findings were reported on Medicago sativa, where the highest index was recorded in the wider spacing of 100 cm compared to 25 cm spacing [45].…”

ESTABLISHMENT OF PHENOTYPIC VARIABILITY AND CORRELATIONS OF SEED YIELD AND YIELD RELATED TRAITS IN ALFALFA (Medicago sativa L.) CLONAL PROGENIES

“…The results obtained are in agreement with those reported by Abd El-Naby et al (2016). Avci et al (2017) reported that the year effect was significant for seed number per pod, whereas row spacing and sowing rate did not significantly affect degree of phenotypic expression of trait during growing seasons.…”

“…The number of studies has been carried out to assess the influence of genetic factors, environmental conditions and the crop management on the seed yield (Andjelkovic et al, 2010;Abd El-Naby et al, 2016;Chen et al, 2016;Avci et al, 2017;Pajcin et al, 2020;Marinova, 2021).…”