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Adjusting P-K Fertilization and Liming Strategies to Enhance Yield of Cherry Tomato Plants Grown on an Oxisol
Communications in Soil Science and Plant Analysis ( IF 1.8 ) Pub Date : 2020-07-19 , DOI: 10.1080/00103624.2020.1798992
Jessé Fink 1 , Antonio Rafael Sánchez-Rodríguez 2 , Caroline Pontes Souza 1 , Clovis Pierozan Junior 1 , Frank Silvano Lagos 1 , Gustavo Frosi 1 , Dayana Eckert 1 , Arthur Schwengber 1
Affiliation  

ABSTRACT Although cherry-tomato is becoming more popular in the last years, there are no specific recommendations for P and K fertilization or liming strategies for this specific variety. Our aim was to assess rates of P and K and liming strategies in order to improve the yield of cherry-tomato grown on an Oxisol with a limited P-availability. Two pot experiments were developed. In the first-one, a two-factor factorial design was developed with 4 P (first-factor) and 4 K rates (second-factor), being these rates the 0%, 50%, 100%, and 200% of the recommended fertilization for tomato in South-Brazil. In the second experiment, the soil pH (4.3) was adjusted to 5.5, 6.0, and 6.5 with limestone. Soil P-availability, plant growth, diameter, number of fruits and cherry tomato yields were increased with the P addition, while a non-significant effect was observed after adding K. The highest yield was produced with 50% of the suggested amount of P for tomato in comparison with the non-fertilized plants (yield increase of 674%), while higher P rates (100% and 200%) produced a lower yield increase. The significant effect of soil liming was observed on increase of the flower bunches number when the soil pH was amended to 6.5. Cherry-tomato requirements seem to be different from the recommended for other varieties. Our results indicate that higher yields were achieved with a lower amount of chemical inputs than the recommended for tomato in general, stressing the importance of P for tomato cherry production over the other factors assessed here.

中文翻译:

调整PK施肥和石灰策略以提高氧化质上种植的樱桃番茄植株的产量

摘要 尽管樱桃番茄在过去几年变得越来越流行,但没有针对该特定品种的磷和钾施肥或石灰策略的具体建议。我们的目标是评估 P 和 K 的比率以及石灰策略,以提高在 P 可用性有限的 Oxisol 上生长的樱桃番茄的产量。开发了两个盆栽实验。在第一个中,开发了具有 4 P(第一因素)和 4 K 比率(第二因素)的双因素因子设计,这些比率分别为 0%、50%、100% 和 200%巴西南部推荐的番茄施肥方法。在第二个实验中,用石灰石将土壤 pH (4.3) 调整为 5.5、6.0 和 6.5。土壤磷的有效性、植物生长、直径、果实数量和樱桃番茄产量随着磷的添加而增加,而在添加 K 后观察到不显着的影响。 与未受精植物相比,番茄建议磷量的 50% 产生最高产量(产量增加 674%),而更高的磷率(100 % 和 200%) 产生较低的产量增加。当土壤pH值修正为6.5时,土壤石灰对花束数的增加有显着影响。樱桃番茄的要求似乎与其他品种的推荐要求不同。我们的结果表明,与一般推荐的番茄相比,使用较少的化学投入实现了更高的产量,强调了磷对番茄樱桃生产的重要性超过了此处评估的其他因素。与未施肥的植物相比,番茄建议磷量的 50% 的产量最高(产量增加 674%),而较高的磷率(100% 和 200%)产生的产量增加较低。当土壤pH值修正为6.5时,土壤石灰对花束数的增加有显着影响。樱桃番茄的要求似乎与其他品种的推荐要求不同。我们的结果表明,与一般推荐的番茄相比,使用较少的化学投入实现了更高的产量,强调了磷对番茄樱桃生产的重要性超过了此处评估的其他因素。与未施肥的植物相比,番茄建议磷量的 50% 的产量最高(产量增加 674%),而较高的磷率(100% 和 200%)产生的产量增加较低。当土壤pH值修正为6.5时,土壤石灰对花束数的增加有显着影响。樱桃番茄的要求似乎与其他品种的推荐要求不同。我们的结果表明,与一般推荐的番茄相比,使用较少的化学投入实现了更高的产量,强调了磷对番茄樱桃生产的重要性,而不是此处评估的其他因素。当土壤pH值修正为6.5时,土壤石灰对花束数的增加有显着影响。樱桃番茄的要求似乎与其他品种的推荐要求不同。我们的结果表明,与一般推荐的番茄相比,使用较少的化学投入实现了更高的产量,强调了磷对番茄樱桃生产的重要性超过了此处评估的其他因素。当土壤pH值修正为6.5时,土壤石灰对花束数的增加有显着影响。樱桃番茄的要求似乎与其他品种的推荐要求不同。我们的结果表明,与一般推荐的番茄相比,使用较少的化学投入实现了更高的产量,强调了磷对番茄樱桃生产的重要性超过了此处评估的其他因素。
更新日期:2020-07-19
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