Publication Date
1997
Description
The objective of this experiment was to determine the effect of fertilizer applications and row spacing over seed yield and its components of fromental (Arrhenatherum elatius (L.) Presl.). It was sown in 1994 on a Typic Argiudol soil in Santa Catalina (Buenos Aires, Argentina). Treatments combined two row spacing: 1=17,5 cm and 2=52,5 cm with three fertilization timing: a=at sowing time in 1994 or at the beginning of the regrowth period in 1995; b= when tiller apex became reproductive; c=split at sowing or regrowth period and at apex differentiation; d=control without fertilization. During 1994, fertilization was 782.5 gr/plot of diammonium phosphate for a, 540 gr/plot of urea for b and 375 gr/plot of diammonium phosphate when plots were sown and 270 gr/plot of urea at apex differentiation (c). During 1995 only urea was supplied using 540 gr/plot as total and 270 gr/plot as split fertilization doses. Seed harvest was carried out for 1994 and 1995, sampling 1 m2/plot to measure: panicle length (cm) (PL), spikelets per panicle (SPP) and seeds per panicle (SP) , weight of seeds/plot ( gr./m2) calculating seed yield (kg/ha) (SY), and weight of 1000 seeds (W1000). Retention percentage was calculated as SP x 100/SPP. Seed yield during the establishment year was 287% superior to its control (2.d) when row spacing was 52.5 cm and complete N fertilization doses was applied at apex transformation. Seed yield were similar for the two row spacing and fertilization treatments applied during 1995, and no relation was detected between seed yield and panicles/m2.
Citation
Ferrari, L; Postulka, E B.; and D'Angelo, G H., "Arrhenatherum elatius: Components of Seed Yield as Affected by Fertilizer Applications and Row Spacing" (2024). IGC Proceedings (1997-2023). 5.
https://uknowledge.uky.edu/igc/1997/session25/5
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Arrhenatherum elatius: Components of Seed Yield as Affected by Fertilizer Applications and Row Spacing
The objective of this experiment was to determine the effect of fertilizer applications and row spacing over seed yield and its components of fromental (Arrhenatherum elatius (L.) Presl.). It was sown in 1994 on a Typic Argiudol soil in Santa Catalina (Buenos Aires, Argentina). Treatments combined two row spacing: 1=17,5 cm and 2=52,5 cm with three fertilization timing: a=at sowing time in 1994 or at the beginning of the regrowth period in 1995; b= when tiller apex became reproductive; c=split at sowing or regrowth period and at apex differentiation; d=control without fertilization. During 1994, fertilization was 782.5 gr/plot of diammonium phosphate for a, 540 gr/plot of urea for b and 375 gr/plot of diammonium phosphate when plots were sown and 270 gr/plot of urea at apex differentiation (c). During 1995 only urea was supplied using 540 gr/plot as total and 270 gr/plot as split fertilization doses. Seed harvest was carried out for 1994 and 1995, sampling 1 m2/plot to measure: panicle length (cm) (PL), spikelets per panicle (SPP) and seeds per panicle (SP) , weight of seeds/plot ( gr./m2) calculating seed yield (kg/ha) (SY), and weight of 1000 seeds (W1000). Retention percentage was calculated as SP x 100/SPP. Seed yield during the establishment year was 287% superior to its control (2.d) when row spacing was 52.5 cm and complete N fertilization doses was applied at apex transformation. Seed yield were similar for the two row spacing and fertilization treatments applied during 1995, and no relation was detected between seed yield and panicles/m2.
