Regulagem da Semeadora de Arroz - RiceTec

Summary

Álvaro Schu from Hech Sementes Ltda demonstrates the calibration process of a seed drill for planting rice hybrids at low sowing densities. He explains the importance of correct calibration for achieving uniform seed distribution, especially with Hech's commercial hybrids, AVAX CL and IN9 CL. The video covers the tools required, proper calibration techniques, and the need for regular adjustments. Key aspects include measuring wheel circumference, seed collection, and weighing for density calculation. The goal is to ensure efficient seed use, maximize hybrid benefits, and adjust settings based on the specific hybrid and field conditions.

Takeaways

• 🌾 Correct calibration of the seeder is crucial for any crop, especially when planting rice hybrids at low densities.
• 📏 The company Hech Sementes Ltda recommends a planting density of around 150 seeds per square meter or 25-28 seeds per linear meter for optimal hybrid performance.
• 🚜 Hech Sementes Ltda currently offers two commercial rice hybrids: AvaX CL and I9 CL, requiring 40 kg and 45 kg of seed per hectare respectively.
• 🔄 The seed distribution system used in rice planting, which employs a grooved rotor, must be checked for uniform seed distribution and mechanical damage to avoid issues.
• 🔧 If the rotor is damaged, it may require gear replacement to increase rotor opening and reduce speed for better seed distribution.
• 🚲 The recommended seeding speed should not exceed 4-5 km/h for better seed deposition and soil closure.
• 📏 Materials needed for seeder calibration include tape for marking, a wheel to simulate distance, a calculator for calibration calculations, cups for seed collection, and a millimeter ruler for rotor measurement.
• 🧭 The circumference of the wheel is measured to simulate the distance traveled by the seeder, which is necessary for calibration.
• 💡 The seeder's rotor can be measured either internally or externally depending on the model, which affects the calibration process.
• 🔄 After seed collection, the seeds are weighed and calculations are made to ensure the correct seeding density is achieved.
• ⏱ Regular recalibration is necessary after long periods of seeding (3-4 hours) to ensure the seeder continues to operate at the desired density.

Q & A

What is the primary focus of the demonstration conducted by Álvaro Schu?

The primary focus of the demonstration is to show how to properly calibrate a seeder for low-density seeding, especially when planting hybrid rice varieties.

Why is correct seeder calibration important, particularly for hybrid rice crops?

Correct calibration is crucial for hybrid rice crops because these crops use low seeding densities, and uniform seed placement in the soil is essential for maximizing yield potential.

What are the two commercial hybrid rice varieties mentioned in the demonstration, and what are their recommended seed rates?

The two commercial hybrid rice varieties are Avax CL and I9 CL. The recommended seed rate for Avax CL is 40 kg per hectare, and for I9 CL, it is 45 kg per hectare.

What is the recommended plant stand for the hybrid rice varieties according to Hech Sementes?

Hech Sementes recommends a plant stand of around 150 seeds per square meter or approximately 25 to 28 seeds per linear meter.

What type of seeder system is commonly used in rice planting, and what problems can arise with it?

Most seeders used in rice planting use a grooved rotor system. Problems such as rotor clearance issues and mechanical seed damage can occur, which may affect seed distribution. In such cases, gear adjustments are required to increase rotor clearance and reduce speed.

What is the optimal seeding speed to ensure proper seed deposition in rice planting?

The optimal seeding speed should not exceed 4 to 5 km/h to ensure proper seed deposition in the planting furrow and effective closing of the lines.

What tools are required for the calibration of a seeder as mentioned in the demonstration?

Tools required for calibration include a tape measure to mark the wheel for rotations, a ruler for measuring rotor exposure, a calculator for calibration calculations, seed collection cups, a balance for weighing seeds, and a calibration sheet for recording data.

Why is it necessary to measure the circumference of the wheel that drives the seed distribution system?

Measuring the wheel's circumference is necessary to simulate the distance covered by the seeder during operation, which is critical for accurate seed distribution calibration.

What must be done after collecting the seeds during the calibration process?

After collecting the seeds from each planting line, the seeds are weighed, and calculations are performed to determine if the correct amount of seeds is being deposited to achieve the desired seeding density.

Why is re-calibration necessary after long periods of seeding or when switching between different hybrid rice varieties?

Re-calibration is necessary after long periods of seeding (every 3 to 4 hours) to ensure accuracy, and it is also required when switching between hybrid varieties because different hybrids have varying seed weights, affecting the calibration settings.