Találati lista | Tudóstér

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
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
Borító:
Saját polcon:

001-es BibID:	BIBFORM037451
Első szerző:	Széles Adrienn (okleveles agrármérnök)
Cím:	Effect of nutrition and water supply on the yield and grain protein content of maize hybrids / Ványiné Széles Adrienn, Nagy János
Dátum:	2012
Megjegyzések:	The aim of this study was to examine the problems caused by unfavourable weather (dry and wet) at the R1 growth stage of maize (Zea mays L.), the treatment of these problems and the prevention of yield decrease, as well as the opportunities to increase quality using agrotechnical factors (fertilisation, irrigation). There was a further objective to determine whether Chl content of maize leaves at the R1 growth stage provided a reliable forecast on yield per hectare and grain protein content. This study was carried out in a moderately warm and dry production area on calcareous chernozem soil in Eastern Hungary (47o33' N, 21o26' E, altitude 111 m) in 2007 and 2008. Six different N fertilisers (0,30,60,90,120,150 kg ha-1) were applied in the field experiment, in irrigated and non-irrigated treatments, respectively. The obtained results show that there is a strong and significant positive correlation between Chl content and yield both in the non-irrigated treatment (P<0.001; R=0.777) and the irrigated treatment (P<0.001; R=0.801). A weak stochastic correlation (R2=26.2%) was found between the protein content and the Chl content in the irrigated treatment. A regression analysis showed a weak negative correlation (P<0.001; R=0.345) between yield and protein content in the non-irrigated treatment. In the irrigated treatment, a medium positive correlation was observed (P<0.001; R=0.685). The results of the yearly performed correlation analyses showed that while weather factors greatly affected the strength of correlations, they are still positive in all cases.The Chl content of maize leaves at the R1 growth stage provided a reliable forecast on yield per hectare and grain protein content at maturity. The observed correlation is always closer in the irrigated treatment than in the non-irrigated treatment.
Tárgyszavak:	Agrártudományok Növénytermesztési és kertészeti tudományok idegen nyelvű folyóiratközlemény külföldi lapban leaf chlorophyll content (Chl) nitrogen irrigation genotype quality
Megjelenés:	Australian Journal Crop Science. - 6 : 3 (2012), p. 381-390. -
További szerzők:	Nagy János (1951-) (agrármérnök, mérnök-tanár)
Pályázati támogatás:	TÁMOP-4.2.2/B-10/1-2010-0024 TÁMOP
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat
Borító:
Saját polcon: