"Size Year" Result Tree How to Fertilize

"Size Year" Result Tree How to Fertilize

When a fruit tree experiences a "big year," it means that the tree has produced an unusually high yield, which significantly depletes its nutrient reserves. As a result, the nutrients accumulated during the previous growth stages are reduced, and the overall nutrient composition changes. Typically, the soluble sugar content increases, while starch levels decrease. The protein content, along with the proportion of starch to total nitrogen, is also lower. Additionally, the organic phosphorus content drops, while inorganic phosphorus rises. These imbalances lead to delayed flower bud differentiation, a slower rate of formation, fewer flower buds, and generally poor quality. When managing fertilization for a "big year" tree, there are three key points to consider. First, it's essential to apply adequate fertilizer based on the expected yield to prevent nutrient deficiency, which could negatively affect both tree growth and fruit development. Second, because a large number of flowers are formed in a "big year," early spring fertilization before bud break and flowering should be adjusted depending on the amount of base fertilizer applied in autumn and the tree's nutrient storage levels. If sufficient base fertilizer was used and the tree has good nutrient reserves, additional fertilizer before sprouting may not be necessary. This helps avoid excessive fruit set, which can increase the workload for thinning and potentially worsen the "big year" cycle. However, if the base fertilizer was insufficient or the tree's nutrient reserves are low, a small amount of available nitrogen fertilizer can be applied before flowering to support bloom development. Third, take advantage of the timing before flowering by applying a top dressing of available nitrogen to promote better flower bud differentiation, increase the number of flower buds, and improve the yield for the following year, which is typically a "small year." On the other hand, trees in a "small year" have a lighter fruit load, weaker early growth, and more nutrient accumulation in the middle and late seasons. This leads to earlier and more rapid flower bud differentiation, with a higher number of flower buds. Therefore, applying nitrogen fertilizer early, before bud break and flowering, can help boost fruit set and increase the yield for that year. However, it's usually not advisable to apply fast-acting nitrogen fertilizer before flower bud differentiation, as this could lead to too many flower buds, worsening the cycle between "big" and "small" years.

Frozen Tuna

Frozen Tuna,Frozen Tuna Sashimi,Tuna Head Frozen,Peeled Tuna Frozen

Zhejiang Ocean Family Co., Ltd., , https://www.ocean-family.com