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001-es BibID:	BIBFORM104199
Első szerző:	Pepó Péter (agrármérnök)
Cím:	Correlation analysis of the SPAD readings and yield of sweet potato (Ipomoea batatas L.) under different agrotechnical conditions / Pepó Péter
Dátum:	2020
ISSN:	1835-2707 1835-2693
Megjegyzések:	We studied the effect of planting method (flat and ridge planting) and row spacing (0.75-1.0 m) on the yield and SPAD readings of sweet potato (Ásotthalmi 12 variety) in a small-plot field experiment in 2017 and 2018. The experiment was set up in lattice design with 4 replications. The SPAD readings of sweet potato were measured four (2017) and three (2018) times during vegetation period (by Konica Minolta 502). A high yield level was reached both in 2017 (23.23-50.69 t ha-1 marketable yield) and 2018 (33.26-47.34 t ha-1 ) due to the effects of the favourable soil (chernozem), the near-optimal agrotechnical background, irrigation and the warmerthan-average vegetation period. In both years, higher yields were obtained with flat planting and 0.75 m row spacing. The proportion of non-marketable tubers was between 9.97-15.57% in 2017 and 8.65-11.01% in 2018. The SPADmax values were measured in July (39.61-50.31 in 2017) and in August (49.90-55.33 in 2018). Strong correlation observed among SPAD readings, the whole yield and the marketable yield in both years (r = 0.632, r = -0.664 and r = 0.709, respectively). Also, a strong correlation was observed between the planting method and the obtained SPAD readings (r = -0.847, -0.682* in 2017 and r = -0.634, -0.488 in 2018, respectively), while there was no correlation between row spacing and SPAD readings (r = -0.006NS -0.190NS). Crop year had a strong effect on SPAD readings (r = 0.639-0.871*).
Tárgyszavak:	Agrártudományok Növénytermesztési és kertészeti tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk correlation LAI planting method row space SPAD sweet potato
Megjelenés:	Australian Journal of Crop Science. - 14 : 05 (2020), p. 761-765. -
Pályázati támogatás:	EFOP-3.6.3-VEKOP-16-2017-00008 EFOP
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