KUALITAS BIJI SORGUM MANIS VARIETAS NUMBU DENGAN PEMBERIAN PUPUK SUMBER FOSFAT YANG BERBEDA

Sorghum is a source of animal feed poultry and ruminants . Source of phosphate fertilizer consists of SP36 ( water soluble ) and rock phosphate ( BP ) ( acid soluble ) . Manure comes from the decomposition of faeces , urine and the rest of the animal feed . Charcoal is used as a soil amendment , because of its improved physical properties soil . The study was conducted from March to August 2013 in the collection of cropland Faculty of Animal Husbandry and Agriculture Diponegoro University . The experimental design used in this study is a randomized block design ( RBD) with three replications as a group . Study treatment consisted of T0 = Control , T1 = SP 36 , T2 = Rock Phosphate , T3 = Manure , T4 = Manure " Plus " , T5 = Charcoal , T6 = Rock Phosphate + Charcoal , T7 = SP 36 + Charcoal , T8= Charcoal +Manure , T9 = Manure " Plus " + Charcoal . Manure " plus " can be used as a substitute for SP36 . Pile " plus " produce the same levels of P with SP36 . Pile " plus " gives the results of the different levels of P seed .Keyword: Sorghum bicolor  (L.) Moench, seeds quality, manure, SP36, rock phosphate

NUTRIENT UPTAKE IMPROVEMENT OF FORAGE LEGUMES BY ROCK PHOPHATE FERTILIZATION AND ARBUSCULAR MYCORRHIZAL FUNGI INOCULATION

A series of experiments were carried out during 25 months consisting of greenhouse and field experiments and laboratory analysis. Centro (Centrosema pubescens) and puero (Pueraria phaseoloides) were inoculated with arbuscular mycorrhizal fungi (AMF) and without AMF and were fertilized with rock phosphate (RP) at dosage of completely randomized design (CRD) in three replicates was used for greenhouse experiment and in completely randomized block design (CRBD) was used for field experiment. The significant difference among treatments was tested using Duncan Multiple Range Tests (DMRT). The results of greenhouse experiment showed that N and P uptake of puero were higher than centro. Nitrogen and P uptake of mycorrhizal legumes were higher than non-mycorrhizal legumes. 0, 100, 200, 300 and 400 kg P2O5/ha. Split in time in Rock phosphate fertilization increased N and P uptake of mycorrhizal legumes approximately 9, and 22 times than non-mycorrhizal legumes respectively. The result of field experiment showed that N and P uptake of centro and puero Increased after defoliation. However, N and P uptake of puero were higher than centro. Rock phosphate fertilization increased N and P uptake of legumes. Nitrogen and P uptake of legumes were not significantly different for both with or without AMF inoculation