ABSTRACT

The QUEFTS (QUantitative Evaluation of the Fertility of Tropical Soils) model is a valuable tool for developing location-specific management of macronutrients such as N, P, and K to attain higher yields. A review analysis is conducted to understand the applicability of the QUEFTS model in developing site-specific nutrient management (SSNM) for different crops. A total of 33 published articles are available for the QUEFTS model for different crops across the world. The SSNM is available for rice, wheat, maize, potato, tropical tuber crops (cassava, sweet potato, elephant foot yam, taro, and yam), peanut, watermelon, soybean, radish, tea, sweet potato, elephant foot yam, yam, and taro in different countries using the QUEFTS model, and it is discussed in this review. The maximum values of accumulation and dilution of N, P, and K; the balanced nutrient requirements to produce 1000 kg of crop yield; and their internal efficiencies are discussed in this review paper. The review shows that the QUEFTS model parameters derived for rice, wheat, and maize can be directly adapted to different environmental conditions. The data available for potato demand further refinement of the model for its general application irrespective of the agro-climatic conditions. The two sets of data available for cassava are similar and can use the same model parameters for further studies for nutrient management. Single set of data for other crops shows the necessity for more studies to increase their production. The modeled values for different crops presented in this review can further assist the decision-makers in scheduling fertilizer applications for the respective crops, reducing fertilizer and economic losses, and maintaining soil quality. Thus, QUEFTS can be widely used as a simple model to recommend nutrient management practices. However, the QUEFTS model considers only the mean meteorological parameters irrespective of their daily variations. It also considers the soil as a homogeneous medium, which influences the crop yield estimation, which needs to be addressed among agricultural researchers. Therefore, further modifications are also needed for QUEFTS to incorporate different agro-climatic and management conditions and different interactive processes, including other micronutrients, irrigation practices, and sub-soil properties as this model assumes that nutrients are the only limiting factors in crop yield. This review also demands the necessity to focus on the nutrient management of other food crops to ensure food security.

摘要

QUEFTS（热带土壤肥力的定量评估）模型是一种有价值的工具，可用于开发特定地点的常量营养素管理，例如 N、P 和 K，以获得更高的产量。进行审查分析以了解 QUEFTS 模型在开发针对不同作物的特定地点营养管理 (SSNM) 的适用性。共有 33 篇已发表的文章可用于全球不同作物的 QUEFTS 模型。SSNM 可用于水稻、小麦、玉米、马铃薯、热带块茎作物（木薯、甘薯、象脚山药、芋头和山药）、花生、西瓜、大豆、萝卜、茶叶、甘薯、象脚山药、山药, 和芋头在不同国家使用 QUEFTS 模型，本文对此进行了讨论。N、P、K的累积和稀释最大值；生产 1000 公斤作物产量的平衡养分需求；这篇评论文章讨论了它们的内部效率。审查表明，针对水稻、小麦和玉米推导出的 QUEFTS 模型参数可以直接适应不同的环境条件。无论农业气候条件如何，马铃薯的可用数据都需要进一步完善模型以使其普遍应用。可用于木薯的两组数据相似，可以使用相同的模型参数进行进一步的养分管理研究。其他作物的单一数据集表明有必要进行更多研究以增加其产量。本次审查中提出的不同作物的模型值可以进一步帮助决策者为各自的作物安排施肥，减少肥料和经济损失，保持土壤质量。因此，QUEFTS 可广泛用作推荐营养管理实践的简单模型。然而，QUEFTS 模型只考虑平均气象参数，而不管它们的每日变化。它还将土壤视为一种均质介质，这会影响作物产量估计，这需要农业研究人员加以解决。因此，还需要对 QUEFTS 进行进一步的修改，以纳入不同的农业气候和管理条件以及不同的交互过程，包括其他微量营养素、灌溉方法和地下土壤特性，因为该模型假设营养素是作物产量的唯一限制因素。