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001-es BibID:	BIBFORM097435
Első szerző:	Ali, Kawa A.
Cím:	An Evaluation Study for Chlorophyll Estimation Techniques / Kawa A. Ali, Sazar S. Noraldeen, Arshad A. Yaseen
Dátum:	2021
ISSN:	1016-4383 2224-5383
Megjegyzések:	A field experiment was conducted to evaluate the efficacy of two destructive and two nondestructive chlorophyll estimation techniques for two vegetable crops (aroma tomato Solanum lycopersicum L. and green pepper Capsicum annuum L.) in three different environments (open field, lath house and plastic house) to indicate the best method of chlorophyll estimation. After 80 days from sowing chlorophyll estimation was implemented first by nondestructive methods using SPAD (SPAD-502 Plus Konica Minolta Tokyo, Japan) and atLEAF chlorophyll meter (at-LEAF FT-GREEN-LLC Willington, DE, USA) instruments, then the same leaves were cut and chlorophyll estimation were done by destructive methods using two organic solvents ( 80% acetone and 100% ethanol). Results demonstrate significant differences between SPAD and atLEAF data for tomato and pepper plants where higher levels with atLEAF instrument comparing to SPAD chlorophyll meter. Higher chlorophyll levels were recorded in open field plants comparing to lath and plastic houses plants. Chlorophyll a content was related to carotenoid levels in both destruction methods. There was positive correlation between SPAD and atLEAF. Nondestructive methods could be used as an alternative method for destructive methods.
Tárgyszavak:	Agrártudományok Növénytermesztési és kertészeti tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk Chlorophyll Carotenoids Photooxidation SPAD atLeaf
Megjelenés:	Sarhad Journal of Agriculture. - 37 : 4 (2021), p. 1458-1465. -
További szerzők:	Noraldeen, Sazar S. Yaseen, Arshad Abdulkhalq (1986-) (Agricultural Engineer)
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001-es BibID:	BIBFORM096698
Első szerző:	Yaseen, Arshad Abdulkhalq (Agricultural Engineer)
Cím:	The Potential Role of Moringa Leaf Extract as Bio-Stimulant to Improve some Quality Parameters of Different Lettuce (Lactuca sativa L.) Genotypes / Arshad Abdulkhalq Yaseen, Mária Takácsné Hájos
Dátum:	2021
ISSN:	1016-4383 2224-5383
Megjegyzések:	Improving plant quality and increasing the yield, using environmentally friendly products is essential for human health and protect the environment. This research aimed to assess the possible role of moringa (Moringa oleifera) leaf extract (MLE) in improving some quality parameters of lettuce (Lactuca sativa L.) grown under plastic tunnel conditions. In this regard, three different lettuce varieties (May King, Kobak and Great Lakes) were grown in spring 2019 and 2020. The concentration of 6% MLE was sprayed as a biostimulant every two weeks from transplanting with the amount of 25 mL plant-1. The results indicate that lettuce vegetation quality (head structure, head weight and root weight) was significantly improved by the use of 6% MLE, where their combination of MLE and plant variety has also improved some of the vegetation quality parameters, too. However, significantly the morphological quality parameters were least influenced by the plant variety alone. On the other hand, MLE did not significantly impact the bioactive compounds as total polyphenols and vitamin C. However, the treatment of 6% MLE significantly reduced nitrate content in the plant leaves of both experiments by 4% in 2019 and 20% in 2020. In both experiments, the significantly influenced factors on the bioactive compounds (total polyphenols and vitamin C) were mainly due to the plant varieties and the interaction of 6% MLE and plant varieties. In our experiments, physical parameters like relative chlorophyll content, normalized difference vegetation index (NDVI) were also evaluated. The result indicates that 6% MLE can have a potential role in improving vegetative quality parameters and reducing nitrate content in lettuce leaves, while bioactive compounds were most influenced by plant variety and the interaction of plant variety and foliar application with MLE.
Tárgyszavak:	Agrártudományok Növénytermesztési és kertészeti tudományok kutatási jelentés folyóiratcikk
Megjelenés:	Sarhad Journal of Agriculture. - 37 : 4 (2021), p. 1107-1119. -
További szerzők:	Takácsné Hájos Mária (1961-) (kertészmérnök)
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