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 |