The Relationship Between Phosphorus and Zinc in Corn Plants

Zinc is one of the micronutrients required for plant growth. The plant requirement is very small in relation to the macronutrients: nitrogen, phosphorus and potassium. Even with a small plant requirement zinc deficiency is one of the more common micronutrient deficiencies. Zinc deficiency symptoms have been observed on a number of agricultural crops in many parts of the country including South Dakota. Zinc deficiency symptoms were first observed on corn in the south central part of the state in the late nineteen fifties. Since that time, deficiency symptoms have been observed with increasing frequency over several parts of the state. An extremely large number of deficiency symptoms were observed with increasing frequency over several parts of the state. An extremely large number of deficiency symptoms were observed by the author during the spring of 1965. Corn has been the major crop in South Dakota exhibiting zinc deficiency, however, deficiency symptoms have been observed on soybeans. Zinc deficiency symptoms have appeared on corn grown on soils that were very sandy, low in organic matter, highly calcareous, severely eroded, leveled for irrigation, high in native phosphorus and/or where high rates of phosphorus had been applied. The addition of phosphorus fertilizer has been the major concern in South Dakota relative to zinc deficiency. In 1964 the addition of 23 pounds of P2O5 per acre created a zinc deficiency problem in Tripp County in the south central part of the state. It was assumed that the addition of phosphorus fertilizer rendered the zinc unavailable to the plant. The use of phosphorus fertilizer is rapidly expanding, which may create zinc deficiency problems in other areas. Therefore, a green-house investigation was set up to study the effect of phosphorus and zinc applications to South Dakota soils. The investigation was centered around the alleviation of the difficulty involved in the use of phosphorus fertilizer, and/or possibly suggesting an answer to the P-Zn interaction since there yet remains to be found a satisfactory explanation for the mechanism involved

Sugarbeet Production Under Reduced Tillage Prospects And Problems

A study was initiated in the fall of 1977 to obtain base line data on the applicability of reduced tillage sugarbeet production in the Red River Valley. Three reduced tillage systems were compared to a conventional system which consisted of fall plow plus secondary tillage. Results indicated warmer early spring soil temperatures, better seedling emergence, lower ground-level wind speed and no significant yield loss under reduced tillage as compared to the conventional system

Reflexivity Through a Yoga Class Experience: Preparing for My Health Promotion Without Borders Excursion to Mongolia

In this paper, I (S. L. Deibert) share my story of discovering the relationship between reflexivity, autoethnography, and yoga through a meaningful experience. Yoga has been an important influence on my physical and mental well-being for over a decade, but I did not consider its implications in my academic life until I was asked to write a reflexive assignment for a course. The task was exploring who I am in connection to my master’s thesis project; the challenge was finding a starting point for my reflexive journey of self-discovery. Frustrated by the latter, I turned to yoga for refuge; instead of escaping the assignment, I found that my quest for self-exploration was intertwined with my yoga practice. The purpose of this paper is to delve further into my experience with yoga as a medium for developing reflexivity. Using autoethnography, I share my journey of developing critical thinking through a narrative related to my yoga class experience. Linking my research to my yoga practice allowed me to better understand myself as a person and researcher, become mindful of how my own views shape my experiences, and develop a deeper level of critical reflection. Overall, this work demonstrates the experience of a connection between yoga, reflexivity, and autoethnography, and adds to the sparse literature exploring the intersection of these three