😲 Jangan Salah Hitung‼️Begini Dosis Pupuk TSP 46% P2O5 Untuk Tanaman ✅ Cara Hitung Pupuk Fosfor ✅

Summary

The video script provides a detailed guide on how to accurately calculate the amount of TSP (Tri-Superphosphate) fertilizer needed for various crops, including rice, corn, tomatoes, chili, and tubers. It emphasizes the importance of understanding fertilizer absorption rates, stating that plants typically absorb only 30% of the fertilizer applied. The speaker explains how to adjust dosages based on plant needs, using real-world examples to ensure efficiency and avoid wasting money. The goal is to help farmers use fertilizers correctly and achieve optimal crop growth by using the right amounts of nutrients.

Takeaways

• 😀 TSP fertilizer (Triple Superphosphate) contains 46% phosphorus (P2O5), and it's important to know how much of this is absorbed by the plants to avoid over or underuse.
• 😀 Fertilizer application must be calculated carefully, as plants only absorb around 30% of the phosphorus from the applied fertilizer.
• 😀 For rice, the standard recommendation is 100 kg of TSP fertilizer per hectare, but due to low absorption rates, the actual requirement should be 200 kg per hectare.
• 😀 The correct phosphorus dosage for plants depends on their specific needs and absorption rates, so factory recommendations are only a starting point.
• 😀 Each plant (e.g., rice, corn) requires a small amount of phosphorus per season, but accurate calculations are needed to ensure the plant receives enough nutrition.
• 😀 Overdosing or underdosing phosphorus fertilizer can lead to inefficient use of resources and wasted money.
• 😀 For corn, the recommended dosage from the factory is 100 kg per hectare, but for better absorption, this should be increased to around 300 kg per hectare.
• 😀 For fruit trees like avocado, durian, and rambutan, 500 kg of TSP fertilizer is recommended per hectare, but adjusting this to 1.2 tons per hectare can provide better results.
• 😀 Fertilizer doses should be adjusted based on the specific type of crop—fruits, tubers, and grains all have different requirements.
• 😀 The speaker emphasizes the importance of understanding plant nutrition, comparing it to a balanced meal where only a fraction of the nutrients are absorbed, while the rest is wasted or bound in the soil.
• 😀 It’s crucial to understand that phosphorus availability is affected by soil conditions, such as calcium binding, which can limit absorption even when fertilizer is applied correctly.

Q & A

What is TSP fertilizer, and what is its primary component?

TSP (Tri Superphosphate) fertilizer is a phosphorus fertilizer, and its primary component is phosphate, represented as P2O5, which is absorbed by plants to meet their phosphorus needs.

How do you calculate the plant's need for TSP fertilizer?

The calculation starts by referring to the manufacturer's guidelines, typically specifying a dosage per hectare. From there, the amount of fertilizer is divided by the number of plants per hectare to determine the amount of phosphorus each plant will receive. Then, the absorption rate (usually 30%) is applied to find the actual amount absorbed by the plant.

Why is 46% P2O5 mentioned on TSP fertilizer packaging important?

The 46% P2O5 indicates the percentage of phosphorus ions available for the plant to absorb. For example, a 1kg bag of TSP fertilizer contains 460g of phosphorus in the form of P2O5, which is the nutrient the plant uses.

How much phosphorus does a rice plant need per season?

Each rice plant needs about 0.3 to 0.5 grams of phosphorus per season. The amount is small because rice plants have a low phosphorus requirement during their growth cycle.

Why do factory guidelines for fertilizer application often lead to phosphorus deficiency in plants?

Factory guidelines may not account for the actual absorption rate of the fertilizer by the plants. Typically, only 30% of the phosphorus applied is absorbed by the plant, so following the standard dosage without adjustment may result in phosphorus deficiency.

How can you adjust fertilizer dosage to meet the plant's actual needs?

To meet the plant's phosphorus needs, you should increase the fertilizer dosage. For example, if the standard dosage is 100kg per hectare, you may need to apply 200kg per hectare to ensure the plant receives the required amount of phosphorus, considering only 30% of it is absorbed.

What is the suggested TSP fertilizer dosage for corn, and why might it need adjustment?

The factory suggests 100kg of TSP per hectare for corn, but this may not be enough because only 30% of the phosphorus is absorbed. Increasing the dosage to 300kg per hectare ensures the plant receives sufficient phosphorus, with 1.2 grams per plant absorbed after adjusting for absorption efficiency.

How does the need for TSP fertilizer vary among different crops?

Different crops have different phosphorus needs. For instance, rice requires around 200kg of TSP per hectare, while corn needs around 300kg per hectare. Crops like tomatoes, chilies, and tubers require higher amounts, such as 400-800kg per hectare, depending on the plant's phosphorus absorption capacity.

What are the recommended adjustments for fruit trees regarding TSP fertilizer?

For fruit trees such as avocado, durian, and rambutan, the recommended dosage is 500kg of TSP per hectare for 150 trees. However, to account for phosphorus that may be bound in the soil and not absorbed, the dosage may need to be increased to 1.2 tons per hectare.

How does phosphorus absorption by plants compare to nutrient absorption in the human body?

Phosphorus absorption by plants works similarly to how humans absorb nutrients. Just as a human body can only absorb a fraction of the food it consumes (about 30%), plants can only absorb around 30% of the phosphorus fertilizer applied, with the rest remaining in the soil or being bound by other elements.