Bulletin of the National Research Centre

Table 2 Effect of bio-control agents, aqueous plant extracts, and citric acid as soil treatments and/or foliar spray on shoot parameters of potato plants in field application

From: Field application of bio-control agents and aqueous plant extracts for controlling bacterial soft rot and enhancement yield quality of Solanum tuberosum L. cv. Diamond

Treatments	Soil treatment						Foliar spray
	Shoot length		Shoot no./pit		Leaves no./pit		Shoot length		Shoot no./pit		Leaves no./pit
	cm	Incr.%	No.	Incr.%	No.	Incr. %.	cm	Incr.%	No.	Incr.%	No.	Incr.%
Bacillus subtilis	47.8a*	50.3	2.6ab	160.0	66.8a	247.9	53.8a	68.1	2.0abcd	62.8	39.8a	97.0
Bacillus pumilus	48.2a	51.6	2.8ab	180.0	73.4a	282.3	54.2a	69.4	2.6a	20.9	45.8a	126.7
Trichoderma harzianum	49.0a	54.1	2.0b	100.0	72.8a	279.2	50.8ab	58.7	2.4ab	16.3	38.8ab	92.1
Trichoderma virens	48.4a	52.2	3.0a	200.0	73.8a	287.4	51.6ab	61.2	2.2abc	16.3	35.6abc	76.2
Lantana	48.4a	52.2	2.4ab	140.0	57.8ab	201.0	52.0a	62.5	1.6bcd	67.4	42.2a	108.9
Lemongrass	43.0ab	35.2	1.6bc	60.0	39.4b	105.2	53.6a	67.5	2.4ab	27.9	42.8a	111.9
Olive cake	46.6a	46.5	2.2ab	120.0	46.0b	139.6	56.0a	75.0	1.4 cd	27.9	44.6a	120.8
Citric acid	NT						45.2b	41.2	2.0abcd	66.7	36.0abc	78.2
PDB medium only	35.6bc	11.9	1.3bc	30.0	24.8bc	26.3	36.8c	15.0	1.3 cd	8.3	27.4 cd	45.6
NB medium only	35.6bc	11.9	1.4bc	40.0	26.4bc	37.5	35.8c	11.9	1.3 cd	8.3	28.4bcd	40.6
Control	31.8c	-	1.0c	-	19.2c	-	32.0c	-	1.2d	-	20.2d	-

NT not test
*Means in each column followed by different letter(s) are significantly different according to Duncan’s multiple range test at P ≤ 0.05

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