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Table 4 Interaction effect of P fertilizer on lettuce plant growth, water applied and water use efficiency

From: Improving Water Use Efficiency of Lettuce (Lactuca sativa L.) Using Phosphorous Fertilizers

Fertilizer type

Fertilizer rate

Fresh weight

Dry weight

Total water applied

Water use efficiency

 

(kg P2O5/ha)

g/head

mm

g/mm

DAP

0

14.1 h

0.56 h

109.8 h

0.13 f

125

233.7 g

9.35 g

142.5 fg

1.66 e

250

336.4 ed

13.45 ed

161.5 ef

2.10 bcd

375

367.9 cd

14.72 cd

183.4 bcde

2.02 6cd

 

500

427.0 b

17.08 b

203.2 bc

2.12 bcd

SSP

0

16.8 h

0.67 h

115.1 gh

0.14 f

125

266.0 fg

10.64 fg

165.3 ef

1.62 e

250

399.3 bc

15.97 bc

169.0 def

2.38 abc

375

427.3 b

17.09 b

201.3 bcd

2.21 bcd

 

500

495.0 a

19.80 a

212.1 ab

2.42 ab

MAP

0

14.4 h

0.58 h

115.5 gh

0.13 f

125

306.3 ef

12.25 ef

161.0 ef

1.91 de

250

388.0 bc

15.52 bc

173.0 cdef

2.26 bcd

375

531.4 a

21.26 a

205.0 bc

2.34 bc

 

500

526.5 a

21.06 a

239.0 a

2.70 a

PR

0

13.0 h

0.52 h

107.8 h

0.12 f

125

22.1 h

0.89 h

111.7 gh

0.20 f

250

21.3 h

0.85 h

117.8 gh

0.18 f

375

26.4 h

1.06 h

124.6 gh

0.21 f

 

500

17.8 h

0.71 h

116.7 gh

0.15 f

LSD

 

50.7

2.03

32.7

0.36

  1. Means followed by different letter(s) in a column differ significantly according to LSD test at 0.05 probability.