Pengaruh Umur Panen dan Jenis Legum Penutup Tanah terhadap Kualitas Tanah di Lahan Kering
Abstract: Effects of
Harvesting Time and Types of Legume Cover Crop on SoilQuality in Dryland
Farming. Dryland is characterized by limited water resources, itdepends on
amount and distribution of rainfall and its low quality of soil. Effort
onimprovement of soil quality have been reported could be done through
incorporating biomassof legume cover crops (LCC). Time of harvesting (then
incorporated) and types of LCCdetermine the nutrients in the biomass, which
finally affects the soil quality. A fieldexperiment was conducted to study the
effects of time of harvesting and types of LCC on soilquality in dryland
farming area in the village of Sengguan, Gianyar Regency, Bali Provincefrom
August to December 2015. The experiment was arranged in a completely
randomizedblock design with three replications. The treatments were the times
of harvesting (or thenincorporation) (3, 6 and 9 weeks after sowing or WAS) was
assigned as the first factor whiletypes of LCC (Mucuna pruriens L. (kara),
Crotalaria juncea L.(orok-orok), and Phaseoluslunatus L. (kacang arbila)) as
the second factor. Results of experiment indicated thatincorporated LCC biomass
significantly (P<0.05) increased soil quality (physically,chemically and
biologically). Mucuna pruriens and Phaseolus lunatus harvested and
thenincorporated at 3 WAS significantly (P<0.05) increased chemical
(organic-C, total-N,available K) quality of the soil, while when harvested 9
WAS the effects were moresignificant on physical (bulk density and porosity)
quality. Soil moisture content increasedwhen Phaseolus lunatus was harvested
and incorporated at 3 WAS, while microbial activities(indicated by soil
respiration) increased when Mucuna pruriens was treated at the same time.
Penulis: ANTONIUS ALI
Kode Jurnal: jppertaniandd160378
