Rice

To effectively implement continuous long-term use of cultural practices, the following steps, as part of the Integrated Pest Management (IPM)  should be carried out, but before taking any pest control action, IPM first sets an action threshold, a point at which pest populations or environmental conditions indicate that pest control action must be taken:

• Step 1: Inspection. The cornerstone of an effective IPM program is a schedule of regular inspections. This should be regular to identify any new visitors to your crop.
• Step 2: Preventive Action: regular inspections reveal vulnerabilities in your pest management program, steps can be taken to address them before they cause a real problem. One of the most effective prevention measures is exclusion, i.e., performing structural maintenance e.g by closing potential entry points revealed during inspection thereby physically keeping pests out and hence reducing the need for chemical control.
• Step 3: Identification: Different pests have different behaviours. By identifying the problematic species, pests can be eliminated more efficiently and with the least risk of harm to other organisms. Professional pest management always starts with the correct identification of the pest in question.
• Step 4: Analysis: Once you have properly identified the pest, you need to figure out why the pest is in your facility, e.g. food debris or moisture accumulation that may be attracting it? What about odors, through floors or cracks, etc.
• Step 5: Treatment Selection: Cultural or IPM stresses the use of non-chemical control methods, such as exclusion or trapping, before chemical options. When other control methods have failed or are inappropriate for the situation, chemicals may be used in least volatile formulations in targeted areas to treat the specific pests- use the right treatments in the right places, and only as much as you need to get the job done.
• Step 6: Monitoring: Constantly monitoring your facility for pest activity and facility and operational changes can protect against infestation and help eliminate existing ones. Your agricultural extension officer can assist you in technical advice to keep pests away.
• Step 7: Documentation: Up-to-date pest control documentation is important and could include scope of service, pest activity reports, service reports, corrective action reports, trap layout maps, lists of approved pesticides, pesticide usage reports and applicator licenses

To effectively implement Physical Storage Options:

• Step 1: When making a choice of which storage option to choose, farmers must consider the type of crop to be stored, storage requirements of the crop and the form in which the crop must be stored (for 0-6months/3-12months).
• Step 2: Grains must be stored in a dry place with a constant temperature.
• Step 3: Crops should be dried and have low moisture content prior to storage.
• Step 4: Airtight containers should be used to avoid insect infestation.
• Step 5: Based on farmer resources and time of storage, there are a number of containers that can be utilised to store harvested crops including metal silos, polythene sacks (that can be layered), mud silos, plastic bags.
• Step 6: As a last measure, insecticides in the form of a powder can be applied to harvested crops. The powder comes in pre-measured packets and are low dosage so generally safe to handle. Information is provided on each packet and should be read before integrating it into the crop. Grain needs to be cleaned before consumption.

To effectively implement Drying Technique practices:

• Step 1: Harvest crops.
• Step 2: Consider the number of different crops that need to be dried.
• Step 3: Dry the crops naturally using air temperature or direct sunlight or artificial drying through using fans or other mechanical means.
• Step 4: Never place crops directly on the soil but rather on a cement area, woven mats or a layer of sacks.
• Step 4: Livestock should be kept away from drying grains to prevent contamination and loss.
• Step 5: Farmers should consult storage life charts that will help determine dry crop characteristics and approximate times for drying.
• Step 6: Cover all drying grain at night to prevent loss or damage.
• Step 7: Sorghum should be left on the seed, maize should be de-husked and left on the cob, grain and pulses are normally left in their pods.
• Step 8: Monitor the stored grain by checking at least every two weeks.

To effectively implement Changing Harvest Time practices:

• Step 1: Consider researching recent rainfall records and consult national meteorological services to as accurately predict start of rainy season as possible.
• Step 2: Farmers should consult data provided by the African Post Harvest Loss Information System (APHLIS), which provides information on harvest loss and additional resources to consult.
• Step 3: Consult with national agricultural extension and research to determine growing periods of chosen crops. Request information about quicker or slower maturing seeds.
• Step 4: Plant crops at the right time so as to avoid harvesting during rainy season.
• Step 5: Harvest as soon as crops are physiologically mature.
• Step 6: Wait 24 hours after a rain period to harvest if rain is unavoidable. This may take several days, however, harvesting crops after one rain is better than leaving it for an entire rainy season.
• Step 7: Crops should be transported to the storage for immediate drying.

To effectively implement Best Practice Harvesting Techniques:

• Step 1: Obtain equipment and supplies needed for the harvest and post-harvest activities, e.g. clean sacks, drying mats, etc.
• Step 2: Allocate drying and threshing areas, ensuring the areas are swept, dry, and there is no/limited access for livestock or rodents. If in a dry climate or season, drying outside is optimal. If necessary, construct drying cribs elevated from the ground with rodent guards on legs can reduce access for rodents.
• Step 3: Allocate sufficient storage space for the harvested crop.
• Step 4: Clear weeds from the farm to prevent weed seeds from contaminating the harvest.
• Step 5: Place the harvested crop directly onto clean mats and bags to avoid contact with the soil, which may lead to moisture uptake and also prevent contamination with tiny Striga.

To effectively implement SRI practices:

• Step 1: Consider separation of high-quality seeds from low-quality seeds through soaking them in plain or salt water and the unviable seeds will float on the surface of the water.
• Step 2: Plant the seeds on an unflooded, raised bed with adequate drainage and fertile soil.
• Step 3: After 8-12 days, transplant single young seedlings into a grind pattern with wide spacing between hills (25 cm x 25 cm).
• Step 4: During crop growth period, control the flooding and research and follow alternate wetting and drying irrigation practices.
• Step 5: Consider application of compost and mineral fertiliser for nutrient enhancement.
• Step 6: Use a mechanical weeder for the control of weeds and maximisation of soil aeration.

To effectively implement Alternate Wetting and Drying practices:

• Step 1: Alternate wetting and drying should be considered by the farmer after two weeks of rice transplant.
• Step 2: The farmer should consider digging half of 30 cm tube into soil to monitor water level.
• Step 3: When the water level is 15 cm below the soil surface the field should be irrigated again with a depth of 3 to 5 cm before water drains.
• Step 4: This cycle should be repeated until flowering stage to avoid disturbing reproduction because at this stage the crops are sensitive to water stress.

To effectively implement Rainwater Harvesting practices:

• Step 1: Create a water collection zone connected to a gutter system.
• Step 2: Install filters to the water collection zone.
• Step 3: Connect a hose pipe for easy distribution of irrigation water.
• Step 4: If a farmer intends to use water for human consumption other than flushing toilets, etc, water quality must be frequently tested using reliable and low-cost/low-tech solutions.
• Step 5: Use of filters can be considered to reduce particulate and other pollutants but should be thoroughly investigated – as a separate subject – by the extension officer and the farmer, otherwise it could lead to illness. It is recommended that farms utilise harvested rainwater for irrigation and other farming activities only.

To effectively implement Permeable Rock Dam practices, the following steps should be carried out:

• Step 1: Consider constructing a permeable rock dam across relatively wide and shallow valleys.
• Step 2: Permeable rock dams should consist of long, low rock walls with level crest along full length although farmers should consider central spillways where water course has cracks.
• Step 3: The dam should be between 50-300m in length and 1m in height within a gully.
• Step 4: Consider making the dam wall flatter on the downslope side than on the upslope side.
• Step 5: A foundation of small stones should be set in the trench.
• Step 6: An apron of large rocks is essential to split the erosive force of the overflow.
• Step 7: Downstream banks of the water stream should be shielded by stone pitching to prohibit the increase of the gully.

To effectively Water Spreading Bunds the following should be carried out:

• Step 1: Farmers should consider making earth bunds by hand, animal ploughs or mechanised ploughs.
• Step 2: Contour bunds:
  • Contour lines must be plotted and marked prior to developing the bund.
  • A 40 cm deep infiltration pit is dug directly above where the bund will be plotted.
  • Bunds should be spread 5 m to 10 m apart.
  • Material from the infiltration pit will be piled and compacted to form a 25 cm to 30 cm in height with a base of 75 cm.
  • Soil is piled to form a ridge along the contour. The more significant the slope, the closer the bunds must be plotted.
• Step 3: Semi-circle bunds:
  • Contour lines must be plotted and marked prior to developing the bund.
  • A centre point is chosen as diameter for the bund is selected (this could be 3 m or 30 m depending on the available space). From the centre point a string is used to stake out an even semi-circle.
  • Excavate a small trench before the bund and pile the excavated material. Pile and compact a bund wall, wetting it often to form the wall.
• Step 4: Contour stone bunds:
  • Developed on less steep slopes.
  • Must have access to local stones.
  • Dig out a shallow ditch, 10 cm to 15 cm in depth.
  • Lay largest stones at the bottom of the ditch and pile smaller stone upward.
  • Step 5: Regular monitoring of bunds should take place, especially after rain events or after significant periods of time. Repairs should be done if any damage is found.