Pengaruh metode aplikasi kapur terhadap hasil kacang tanah di lahan kering masam.
1995
Supriyo A. | Dirgahayuningsih R.
Field experiment was conducted at Bumi Asih Village, Tanah Laut district from Dec. 1994 to March 1995. The soil type at the experimental site is Red Yellow Podzolic soil, with characteristics loam silty, soil pH: 4.9; Alech: 0.51 me/100 g, low Ca, Pavl, Mg, and K. The treatments consists of three factors, i.e two sources of lime (Calcite and gypsum), three level of lime dosages (0.25; 0.50 and 0.75 x Alech equivalent) and two application times (spread evenly over the soil two week before planting (WBP) and applied along the plant rows at full flowering stage (FFS). The twelve treatment combination and a control (no liming). Treatment were arranged in a randomized complete block design with three replications. Groundnut seed of Gajah variety were dibbed with plant spacing 40 x 15 cm at plots of 4 x 5 square m, which have been subjected to intensive tillages. Bassal fertilizer were 45 kg N, 75 kg P2O5 and 50 kg K2O/ha. Insect was controled by scouting method. The result of the experiment indicated that gypsum is a better source of lime than calsite, and can increase the yield of groundnut as such as 16.7 percent of that of calsite. Applying the lime along the plant rows at the full flowering stage (FFS) could increase yield as much as 46 percent of that of spreading the lime evenly over the soil at two WBP. The highest yield i.e 1.770 t/ha was achieved by plants at plots treated with gypsum at 0.50 Alech equivalent along the plant rows at FFS.
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