1. While some elements of maternal nutrition are well known, discussion and experimentation continue on important nutritional and delivery issues. This Resource Guide, aimed at field staff who are not nutritionists, summarizes recent literature on this important topic. The annotations discuss both...
  2. 俗话说“你不知道你有一个问题你就不可能解决问题”,这是诊断植物营养缺乏基础科学的支撑。多年来,很多农民和科学家一起工作,通过多种线索来判断农作物的营养缺乏。这些线索和症状十分有用,特别是在土壤和植物组织试验做不了或行不通时。
  3. Four nutrient deficiencies--phosphorus, potassium, nitrogen, and magnesium--can be diagnosed by observing maize leaves. This document includes photos of a healthy maize leaf and of maize leaves demonstrating each of these nutrient deficiencies. It also contains suggestions for how to address each...