Weeds

Weeds compete with the crop of interest for water/moisture, nutrients, sunlight and space, and may also harbor pests and diseases which attack and weaken the growing crops leading to production of low yields.

Weeds are plants growing in the wrong place, which compete with the trees of interest for growth factors like moisture and nutrients. Some weeds are also alternate hosts of diseases, nematodes or insects pests. With this, it is therefore very important to keep the area under the canopy free of weeds.

Any plant growing in a wrong or undesired place is considered a weed. Uncontrolled weeds compete with the crop of interest for growth factors like nutrients, moisture, and space, and may completely suppress the crop leading to low or no yields. They also harbor destructive crop pests and diseases. Cabbage crop does not compete well with weeds and is easily overwhelmed by their attack.

Carrot crop is a poor competitor with weeds, and if not controlled, yields can be reduced by more than 90%, because the weeds can quickly overtake the crop.

Since onion crops are not competitive against weeds, many species may grow in the garden, resulting into significant yield losses.

Bermuda grass (Cynodon dactylon) is a highly variable, sod forming perennial that spreads by stolons, rhizomes and seed. Stolons of Bermuda grass readily root at the nodes.

Bidens Pilosa or Black Jack is an erect annual herb 20-150cm tall.It reproduces by seeds,the stem is square,green with brown strips.It can be easily identified by the elongated fruits that bear hooked bristles that sticks themselves in people clothings and animals furs.

Brome grass is an annual grass weed widely distributed across the wheat belt in the world. In crops and pastures, this highly competitive weed can markedly reduce productivity with seeds contaminating grain samples and causing injury to livestock.

Couch grass is an invasive perennial grass with creeping under leaves stems known as rhizomes.it spreads rapidly to form dense mats of underground stems.

Devil’s thorn (Tribulus terrestris) is an annual plant in the caltrop family ( Zygophyllaceae ) widely distributed around the world, that is adapted to grow in dry climate locations in which few other plants can survive.

Mexica Marigold (Tagetes minuta) is an erect woody annual herb usually 0.5m-2m tall with strongly odorous foliage. The taproots are usually short and tapering, and

Creeping woodsorrel, Oxalis corniculata, is a weed species that frequently appears in lawns, flower beds, gardens, nurseries, and greenhouses.