Table 3 Effect of P fertilizer on lettuce plant growth, total water applied and water use efficiency
From: Improving Water Use Efficiency of Lettuce (Lactuca sativa L.) Using Phosphorous Fertilizers
Fertilizer type | Fresh weight | Dry weight | Total applied water | Water use efficiency |
|---|---|---|---|---|
g/head | mm | g/mm | ||
DAP | 275.9 c | 11.03 c | 160.1 b | 1.61 b |
SSP | 321.0 b | 12.83 b | 172.5 ab | 1.75 ab |
MAP | 353.4 a | 14.13 a | 178.7 a | 1.87 a |
PR | 20.2 d | 0.81 d | 115.7 c | 0.17 c |
Mean | 242.6 | 9.70 | 156.7 | 1.35 |
LSD 0.05 | 22.7 | 0.91 | 14.6 | 0.16 |
Fertilizer rate (kg P 2 O 5 /ha) | ||||
0 | 14.8 e | 0.58 e | 112.0 c | 0.13 c |
125 | 207.0 d | 8.28 d | 145.1 b | 1.35 b |
250 | 286.3 c | 11.45 c | 155.3 b | 1.73 a |
375 | 338.3 b | 13.53 b | 178.6 a | 1.70 a |
500 | 366.7 a | 14.66 a | 192.8 a | 1.85 a |
Mean | 242.6 | 9.7 | 156.7 | 1.35 |
LSD 0.05 | 25.4 | 1.01 | 16.3 | 0.18 |
Significance level | ||||
Fertilizer type | *** | *** | *** | *** |
Fertilizer rate | *** | *** | *** | *** |
Fertilizer type × rate | *** | *** | ** | *** |