Plantations citrus

CgH,3BrN202. A soil-acting herbicide. White crystalline solid, m.p. 158-159" C. It is a non-selective inhibitor of photosynthesis used for weed control In citrus and cane fruit plantations. It is relatively non-toxic to animal life. 

The major crops for agrochemical use are cotton, rice, maize, vegetables and top fruit for insecticides small grain cereals, rice, vines and top fruit for fungicides, and maize, soybeans, small grain cereals, rice, industrial weed control, plantations and orchards for herbicides. Other crops that may be of interest include sugar beet, oil-seed rape, potatoes and citrus dependent upon your company s presence in these crops. 

The commercial use of 2,4-D has decreased substantially and (ca 1993) it has general use for home lawns to control broadleaved weeds it also is used on a limited basis to control broadleaved weeds in commercial moncotyledonous crops, eg, sugarcane. 2,4-D is used on citrus when the fruit is 1/3 to 1 inch in diameter to increase fruit size and to limit fruit drop on trees more than six years old. It should not be applied to trees that are in full flush. A further use includes treatment of harvested lemons at 500 mg/L to improve storage properties and to delay yellowing (23). It is used in certain parts of the world to increase latex flow in old mbber tree plantations. 

Create a diverse mosaic of citrus units and other crops from an existing plantation divide large plots (over 100 ha) into smaller plots of about 1-2 ha and plant hedges or other fruit trees along the plot borders. 

Between the rows (in the alleyway) it may be possible to intercrop permanently with pasture (sheep), beans or other crops. However, this may be difficult in the case of older plantations where the trees are adapted to a certain type of management in such cases, a step-by-step procedure is recommended (introduction of new crops and elements at yearly intervals), to allow the root systems of the citrus trees to adapt to new competition in the soil. For larger, mechanized organic farms it may be difficult to continue intercropping as soon as the newly planted citrus trees are in production. In such cases, cover crops may be more appropriate in order to avoid disturbances in citrus management. 

Mountain bike down the lush Layou River Valley to reach the heart of the all-encompassing rainforest on Dominica. You ll pedal past coffee and banana plantations and groves of citrus. 

Bromacil may also be used for selective weed control in citrus plantations at a rate of 1.6-3.2 active ingredient/ha against annual weeds, and at 3.2-8 kg/ha against perennial grassy weeds. Applied at the higher rate bromacil persists over more than a year. 

Terbacil (Sinbar , Du Pont), introduced in 1966, is also used as selective weedkiller in sugar cane, apple and peach orchards, citrus plantations, established alfalfa and blueberry (Aitken and Arnolds, 1973 Meeklah and McRobb, 1973). 

The recommended rate of terbacil in citrus plantations against perennial weeds (Johanson grass, Bermuda grass) is 4-8 kg active ingredient/ha, in the other crops... 

In contrast to other known herbicides, glyphosate is more efficient against older weeds, so it is to be used in the later growth stages. Its recommended rate is 0.7-S.6 kg active ingredient/ha. It is recommended, in addition to industrial and non-crop areas, for application as directed spray in orchards, vineyards, rubber, coffee, citrus, tea and oil palm plantations (Anonym., 1971 Kemmer, 1978 Kafadaroffer al., 1977 Wurgler and Neury, 1977 Bailey, 1978 Richardson and Lynn, 1979, Franz, 1979). 

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