Garden Trends, Inc.
SRM-Olive is the latest development in plastic mulch technology, offering a hybrid between clear and black mulches. It offers more soil warming than black mulch, while controlling weed growth better than clear mulch. Clear mulch transmits all wavelengths of radiation (light) to the soil. The long wavelengths (infra-red radiation) are converted to heat under the clear film and provide more soil warming than any other mulch color. However, photosynthetic active radiation (PAR) also is transmitted and is responsible for the vigorous weed growth under clear mulch. Black mulch blocks PAR, so weeds do not grow underneath. Soil warming occurs as the black mulch absorbs solar radiation and conducts the heat into the soil, but temperatures are lower than under clear mulch.
This is where SRM-Olive comes into the picture. By utilizing a carefully balanced blend of polyethylene with a specific light modifying pigment, SRM Olive transmits near infra-red radiation, and at the same time blocks PAR. Therefore, it simultaneously generates almost as much heat as clear mulch and suppresses weeds like black mulch. This is a win-win development for growers.
Advantages of SRM-OLIVE:
Product Description: 4'x 2400', 1 mil embossed polyethylene.
Crops that are suited for SRM-Olive Mulch
Embossed vs. Smooth Mulch
Generally, embossed mulch has greater stretchability than smooth. It is highly recommended for raised beds where the plastic mulch should fit snugly and firmly over the bed.
References for further information: