Although corn is regarded as the most feasible forage corp, its relatively low content of protein is the critical we a kness for animal feeding. Many researches have been carried out to improve protein level in corn forage, however, there are no indicatab

This experiment was carried out to compare chemical composition, TDN yield of corn-soybean intercropping and corn monocropping forage plants at different harvesting time and obtained the following results. 1. In both cropping systems, the content of chemi

The growth characteristics and yield per unit area of two cropping systems, corn monoculture and 'wrnsoybean intercropping, were compared and the obtained results were as follows; 1.The two cultivation systems were not significantly different in leaf leng

This experiment was carried out to compare chemical composition of corn-cowpea intercropping and corn monocropping plants at different harvesting time and obtained the following results. 1. In both cropping systems, the contents of crude fat and nitrogen

This experiment was carried out to compare chemical composition of corn-cowpea inter cropping and corn monocropping plants at different harvestion time and obtained the following results. 1. In both cropping systems, the contents of crude fat and nitrogen

The growth characteristics and yield per unit area of two cultivation systems of forage, corn (Zea mays L.) monoculture and corn-cowpea (Vigna sinesis King) inter-cropping were compared and obtained follow results. 1. The two cultivation systems were not

Field experiment was conducted during 1993-94 season to determine the pattern of nutrient uptake and productivity of maize/sweet potato intercropping system. Four levels of nitrogen (0, 50, 100 and 150kg N ha-1 ) and four levels of potassium (0, 40, 80 and 120kg K2 O ha-1 ) formed treatment variables. Plants were sampled periodically to determine dry matter and tissue concentrations of N and K in the individual plant components of intercropped maize and sweet potato. Nitrogen and potassium fertilizer did not interact significantly to nutrient uptake by any plant parts of intercropped maize and sweet potato. But application of N fertilizer independently enhanced N uptake in all the plant parts of maize and sweet potato. The uptake of N in leaf, leaf sheath, stem, husk, and cob of maize increased upto 90 days after planting (DAP) but grain continued to accumulate N till its maturity. Sweet potato exhibited a wide variation in N uptake pattern. Sweet potato leaf shared the maximum uptake of N at 50 DAP which rapidly increased at 70 DAP and then declined. Declination of N uptake by petiole and stem were observed after 120 DAP whereas N uptake by tuber increased slowly upto 90 DAP and then rapidly till harvest. Rate of applied K had very little effect on the uptake patterns in different components of intercropped maize. Pattern of K uptake by leaf, petiole and stem of sweet potato showed almost similar trend to N uptake. But uptake of K by tuber increased almost linearly with the K application. Pattern of N and K uptake by grain and tuber paralleled the grain yield of maize and sweet potato respectively. Intercropped productivity of maize and sweet potato found to be better by the application of 100kg N and 120 kg K2 O ha-1

작약은 다년생 약초로 토양선충에 의한 지하부피해가 많으므로 간작 작부체계에의한 선충피해를 경감할수 있는 재배기술을 개발하고자 관련시험을 수행한 결과를 요약하면 다음과 같다. 1. 작약포장에 서식하는 선충의 종류는 뿌리혹선충, 줄기구근전충, 아엽전충, 뿌리썩이선충, 검선충 등이 있었으며 피해 우점선충은 뿌리혹선충이었다. 2. 작약단작, 작약+고추 및 작약+지황 간작작부제계의 뿌리혹선충 밀도는 큰 차이가 없었으나 작약+참깨, 작약+율무 간작체계에서는 뿌리혹선충 밀도가 작약단작 작부체계에 비해 87%의 감소효과를 보여 선충피해가 우려되는 포장에서는 작약과 참깨 또는 율무를 간작하는 체계가 바람직한 것으로 나타났다. 3.작약의 지상부 병해로는 점무늬병, 흰가루병, 탄저병이 우점하였으며 처리간 점무늬병과 탄저병 발생정도는 비슷하였으나 흰가루병은 작약+고추와 작약+율무 간작사에 발병이 감소하는 경향을 보였다.