{
    "format_version": "1.10.0",
    "particle_effect": {
        "description": {
        "identifier": "minecraft:crop_growth_emitter",
            "basic_render_parameters": {
                "material": "particles_alpha",
                "texture": "textures/particle/particles"
            }
        },
        "components": {
            "minecraft:emitter_initialization": {
                "creation_expression": "variable.size = 0.1;variable.lifetime = 3;"
            },
            "minecraft:emitter_rate_instant": {
                "num_particles": 0
            },
            "minecraft:emitter_lifetime_once": {
                "active_time": 0
            },
            "minecraft:emitter_shape_box": {
                "half_dimensions": [0.5, 0.5, 0.5],
                "direction": "outwards"
            },
            "minecraft:particle_lifetime_expression": {
                "max_lifetime": "variable.particle_random_1*variable.lifetime"
            },
            "minecraft:particle_initial_speed": 0.4,
            "minecraft:particle_appearance_billboard": {
                "size": ["variable.size", "variable.size"],
                "facing_camera_mode": "rotate_xyz",
                "uv": {
                "texture_width": 128,
                    "texture_height": 128,
                    "uv": [16, 40],
                    "uv_size": [8, 8]
                }
            }
        }
    }
}