KOMPONEN HASIL DAN MUTU BIJI BEBERAPA VARIETAS TANAMAN KEDELAI (Glycinemax (L.) Merril) YANG DITANAM PADA EMPAT WAKTU APLIKASI PUPUK NITROGEN
Abstract: Since grain soybean
is high in protein content, nitrogen addition may be required at the time of
pod development and grain filing. This research was conducted to identify the
appropriate time of N application during soybean growth. The field experiment was
established at experimental farm of the
Faculty of Agriculture, Riau University, inPekanbaru, from JunetoOctober 2016.
Three soybean genotypes; ie, Grobogan, Argomulyo and Kaba were planted under
some timing of N applications; ie, no N applied, 25 kg kg N applied at
planting, 25 kg N applied at 30 days after planting (DAP), and 25 kg N applied
at planting added at the same rate at 30 DAP. The experiment was assigned in a
randomized block design with 3 replications. Parametersmeasured were filled pod
numbersperplant, seeds numberperplant, seed weightperplant, grain yieldm-2,
100-seed weight, oil contents and protein contents of the seed. The results
showedthat the application of Nitrogen fertilizer affected yield component and
grain quality ofGrobogan, Argomulyo and Kaba. Application of 25 kg N per haat
planting date and added at the same rate at flowering stageresulted higher
number of filled pod, grain weight per plant, grain yield per m2 and grain
protein content than otherapplication timings.
Keywords: Yield Potential and
Grain Quality, Time ApplicationofNitrogen Fertilizer, SoybeanVarieties
Penulis: Dessy Natalina Pandiangan,
Aslim Rasyad
Kode Jurnal: jppertaniandd170207