TY - JOUR
T1 - Nutrient concentrations within and below root zones from applied chicken manure in selected Hawaiian soils
AU - Ahmad, Amjad A.
AU - Fares, Ali
AU - Abbas, Farhat
AU - Deenik, Jonathan L.
PY - 2009/11
Y1 - 2009/11
N2 - The objective of this study was to evaluate the effects of chicken manure (CM) application rates on nutrient concentrations within and below the root zone of sweet corn (Zea mays L. subsp. mays) under Hawaiian conditions. The research was conducted in leeward (Poamoho) and windward (Waimanalo) areas of Oahu, Hawaii, where contrasts exist in both climatic and soil conditions. Suction cup were used to collect soil solutions from 30 and 60 cm depths. Soil solutions were collected six times during the growing season at each location and analyzed for different nutrients (N, P, K, Ca, Mg, Na, Fe, Mn, Zn, and Cu), nitrate-nitrogen (NO3-N), ammonium-nitrogen (NH4-N), electrical conductivity (EC), and pH. Analysis showed that CM rates significantly affected the concentration of macro-nutrients below the root zone at Poamoho and within the root zone at Waimanalo. In general, nutrient concentration increased with the increasing rates of CM application. There was a significant effect of CM on micro-nutrients except below the root zone at Poamoho. CM significantly affected NO3-N concentration within the root zone for 15, 60 days after planting (DAP) at Poamoho, and 16, 28 DAP at Waimanalo. The effect was also significant on total nitrogen (N) concentration in the root zone across the two growing seasons at Waimanalo. There was a highly significant correlation between total N and NO3-N, and EC within and below the root zone.
AB - The objective of this study was to evaluate the effects of chicken manure (CM) application rates on nutrient concentrations within and below the root zone of sweet corn (Zea mays L. subsp. mays) under Hawaiian conditions. The research was conducted in leeward (Poamoho) and windward (Waimanalo) areas of Oahu, Hawaii, where contrasts exist in both climatic and soil conditions. Suction cup were used to collect soil solutions from 30 and 60 cm depths. Soil solutions were collected six times during the growing season at each location and analyzed for different nutrients (N, P, K, Ca, Mg, Na, Fe, Mn, Zn, and Cu), nitrate-nitrogen (NO3-N), ammonium-nitrogen (NH4-N), electrical conductivity (EC), and pH. Analysis showed that CM rates significantly affected the concentration of macro-nutrients below the root zone at Poamoho and within the root zone at Waimanalo. In general, nutrient concentration increased with the increasing rates of CM application. There was a significant effect of CM on micro-nutrients except below the root zone at Poamoho. CM significantly affected NO3-N concentration within the root zone for 15, 60 days after planting (DAP) at Poamoho, and 16, 28 DAP at Waimanalo. The effect was also significant on total nitrogen (N) concentration in the root zone across the two growing seasons at Waimanalo. There was a highly significant correlation between total N and NO3-N, and EC within and below the root zone.
KW - Chicken manure
KW - Hawaii tropical soils
KW - Macro- and micro-nutrients
KW - Nutrient availability
KW - Suction cup lysimeters
UR - http://www.scopus.com/inward/record.url?scp=77449123558&partnerID=8YFLogxK
U2 - 10.1080/03601230903238723
DO - 10.1080/03601230903238723
M3 - Article
C2 - 20183097
AN - SCOPUS:77449123558
SN - 0360-1234
VL - 44
SP - 828
EP - 843
JO - Journal of Environmental Science and Health - Part B Pesticides, Food Contaminants, and Agricultural Wastes
JF - Journal of Environmental Science and Health - Part B Pesticides, Food Contaminants, and Agricultural Wastes
IS - 8
ER -