Effect of flood and drip irrigation and difference of previous crop residue input on morphological and physiological traits in rice root

Detailed information on the root system under drip irrigation will help in more efficient scheduling. Although input of previous crop residues is effective increasing soil fertility, little known about its effect system. This study aimed to investigate effects methods (drip or flood) and different management morphological characteristics distribution physiological functions rice cultivar ‘Hinohikari’. Experiments were conducted paddy field university farm (input every year) for both flood upland (no residues) campus faculty irrigation. Plant was sampled with a core sampler (ø 5.5 cm × 30 cm), length surface area determined using image analysis. Drip did not change compared irrigation, but heavier individual thickness tended increase The depth index significantly deeper than bleeding rates higher Applying improve mainly at upper layers. mechanisms enhancing growth by applying need be explored individually which physical chemical properties are largely different.