Calcium deficiency in cabbage exhibits characteristic "tip burn" at tips/edges of the leaf. Leaves are deformed and cabbage head will not form if supplemental calcium is not applied. Cupping of leaves is typical.
Composting
A plot of young peas, with residual crop of cabbages (which should have been removed from the field), a contour strip of Napier grass in the background, and at the back on the right an older crop of peas staked
Growing green manure crop between buffer strips for collecting seeds
Push-pull plot during 2nd season, maize and desmodium with striga border crop.
Traditional banana mulching in Uganda. Note: Mulch should be applied at least 60-90 cm away from the banana stowl in order to encourage banana to have more vertical roots: when mulch is applied close to bananan stowl, it encourages development of more superficial lateral roots, which do not held the plant firmly against wind and exposes the plants to water shortage during short dry spell.
Purple witchweed (Striga hermonthica)