Welcome to our blog dedicated to onion farmer from the Onion Doctors. We are going to dive in about chemical and fertilizer application, when to apply and how to apply. We help onion farmers to achieve their goal in onion farming and make their journey in farming into profit and adventure. In order to have profitable onion farming we offer free consultation, we have quality seedings, onion and garlic value pack, onion and garlic oasis package, germinated garlic clove, agronomic support packages, soil testing, land planning services, drip irrigation kit and installation and agronomical support to onion and garlic farmers in Kenya. For more information call 0706252490/070398228.
Soil Preparation for Onion Cultivation And Transplanting
Soil preparation for onions begins several weeks before planting. Farmers start by plowing to improve soil aeration and drainage, removing rocks and debris to create a loose structure that allows bulbs to grow without any space.
One week later, many farmers apply a pre-planting fertilizer such as well-rotted manure or synthetic commercial fertilizer after consulting an agronomist. Usually, farmers apply and incorporate (using a hoe) to the soil around 9500kgs- 10000 kgs per acre of well-rotted-manure at least 1-2 weeks before transplanting the onion seedlings.
Onions grown for bulb production are often planted on raised beds formed by tractors a few days before planting. If furrow irrigation is applied, furrows with 45 cm (18 in) spacing should be formed. On the other hand, if drip or sprinkler irrigation is used, the onion grower must also install the system before planting. Following this step, some may apply soil disinfection substances through the irrigation system if soil analysis has revealed soil infection problems (ask a licensed agronomist in your area).
Post Transplanting Chemical And Fertilizer Application
Immediately after transplanting, the onions is irrigated for the first seven days for spray and feeding program to start. The onion should be applied fertilizer that are rich in nitrogen and phosphorus to help develop strong roots in the soil. Nitrogen based fertilizer like ammonium nitrate should be applied for root growth and bulb formation.
The first two weeks of post transplanting a pesticide and fungicide is applied to prevent any pest and fungal infection that may attack the onion crop at early stage. Foliar fertilizer is also sprayed to boost the onion crop. On the end of the second week NPK is applied on the crop.
On the third week of the after transplanting the Onion bulb size is mostly influenced by planting density, however good crop nutrition, particularly nitrogen, phosphorus and sulphur are essential to achieve good onion bulb size. In order to have good bulb formation Agromaster is applied and wuxal foliar to boost bulbs. Pesticide and folia is also applied on the crops to to reduce any pest infestation especially thrip and fungal infection like downy mildew that may affect the onion crop.
How To Manage Fungal Infection
Fungal diseases attack onion crop especially during excess rains in the season. Farmers should reduce excess irrigation and avoid high nitrogen fertilization foliar or basal as both may worsen rot by keeping the soil too wet and promoting soft growth. Apply NPK slightly higher on potassium.Metacop is a broadspectrum fungicide combining systemic Metalaxyl and protective Copper Oxychloride for both preventive and curative control of major fungal diseases.
Purple blotch on onion crop
How to manage pest Infestation
To manage pests on an onion farm , follow these guidelines:
- Identify the pest: Recognize the specific pest affecting your onions, such as onion thrips or other common pests.
- Choose the right insecticide: Select an insecticide that is effective against the identified pest and is registered for use on onions.
- Apply the insecticide: Use the recommended application rates and methods, such as spraying with a suitable-registered product when the pest population reaches a certain threshold.
- Monitor and adjust: Regularly check the pest population and adjust the application schedule as needed to prevent resistance.
- Follow label instructions: Always adhere to the label recommendations for the insecticide, including application timing, frequency, and mixing with other products if necessary.
- Consider resistance management: Avoid using the same insecticide for consecutive applications to prevent the development of pest resistance.
In general, an integrated pest management program is expected to be much more effective than applying one single control measure.
Thrips on onion crop
As you wrap up your journey into the vibrant world of onion farming in Kenya, remember that sprouts where knowledge meets action. From choosing the right varieties and preparing you soil to timing fertilizers with precision and safeguarding crops from pests and diseases, every step counts toward a bountiful harvest. With consistent care, smart nutrient management, and a wellplanned market strategy, your onions can thrive, bringing both profit and pride to your farm. Fertilizers and chemicals are not just inputsthey are your partners in producing healthy, flavorful, and high yield bulbs. So nourish your soil, nurture your crop, and watch your onion farm flourish. Here’s to golden bulbs, fruitful seasons, and a future rooted in sustainable, profitable onion farming in Kenya with onion doctor.
With Onion Doctor we are here for you if have any question about fertilizer and chemical application in onion farming, grab your self a spray and feeding for the whole season just for you!
Are you in need of in-depth knowledge on onion and garlic production? If yes, we are a call away. Contact us for: Onion seedlings, Garlic seedlings, Germinated garlic cloves, Farm planning services, Soil testing, training on onion and garlic growing, Drip irrigation installation and maintenance, Agronomic support, Onion and Garlic value pack and Farm management. For free consultation, placing orders or booking a visit with an agronomist, please contact us via Call or what’s app +254703982228, Email: Info@oniondoctor.co.ke. You can also check out our social media handles for daily updates on TikTok: https://www.tiktok.com/@oniondoctorke?_t=ZM-8wmsTu0qumO&_r=1 Instagram: https://www.instagram.com/oniondoctorke?igsh=MTVoaHF3aWUydTJzaQ==Facebook:https://www.facebook.com/share/16SwgYn2dG/ Youtube:https://youtube.com/@oniondoctorke?si=u5Jnd-r0qU9UDYqL and Twitter: https://x.com/OnionDoctorKe?t=FR3JXlS_oN1vjjUgAtfyzg&s=09.