The use of inorganic fertilizer in agriculture as well as on sweet corn cultivation is quite high. Inorganic fertilizer recommended for sweet corn is 35 kg urea ha-1, 150 kg TSP ha-1 and 150 kg KCl ha-1. Besides high prices, its difficult to find when needed. To overcome this, an experiment was carried out by utilizing TM plants for reducing urea input. This research was carried out in Air Kuti Village, South Lubuklinggau District I, Lubuklinggau City, South Sumatera Province with an altitude of 110 meters above sea level (ASL), from April to June 2017. The experiment was arranged out in a randomized completely block design (RCBD) factorial 4 x 3 and repeated three times. The first factor was treatment combination of inorganic N fertilizer (urea) and TM plants consisted 4 kinds i.e: 75% urea and 1 TM plant, 50% urea and 2 TM plants, 25% urea and 3 TM plants, and 0% urea and 4 TM plants. The second factor was a frequency of urea application consisted of 3 levels i.e: 1-time application 15 days after planted (15 DAP), 2 times application (15 and 30 DAP), and 3 times application (15, 30 and 45 DAP). The results showed that application of urea fertilizer dosage of 25% recommended (108,75 kg urea ha-1) combinated with 3 stem of TM plants produced the best growth and yield of sweet corn. The frequency of urea application 3 times produced the best growth and yield of sweet corn.
Penggunaan bibit kelapa sawit yang bermutu akan menentukan keberhasilan jangka panjang pengelolaan perkebunan kelapa sawit. Salah satu faktor yang menentukan keberhasilan pembibitan kelapa sawit di tingkat prenursery adalah ketersediaan air yang cukup. Bila terjadi kekurangan air dapat mengakibatkan penyimpangan pertumbuhan dan menghasilkan bibit yang tidak prima. Penelitian ini bertujuan untuk melihat kemampuan sabut kelapayang dikombinasikan dengan pupuk bokasi kotoran ayam untuk menahan air di dalam polibag terhadap pertumbuhan bibit, menggunakan Rancangan Acak Kelompok (RAK)yang disusun secara faktorial, terdiri dari dua faktor perlakuan dan tiga kali ulangan. Faktor pertama adalah bobot sabut kelapa (S) terdiri dari 3 level yaitu :S0 =0 g, S1 = 25 g dan S2 = 50 g per polibag. Faktor kedua bobot pupuk bokasi kotoran ayam (B) terdiri dari 4 level yaitu B1 = 50g,B2 = 100 g,B3 = 150gdan B4 = 200 g per polibag.tanah yang digunakan dalam penelitian ini adalah tanah Ultisol (PMK seberat 10 kg per polibag. Hasil penelitian menunjukkan bahwa penambahan sabut kelapa 50 gdan bokasi kotoran ayam 200 g per polibag seacra tunggal memberikan pengaruh yang nyata terhadap pertumbuhan bibit kelapa sawit di pre nursery, namun tidak terdapat interaksi diantara kedua perlakuan.
Oil palm plantations in Indonesia are the largest one in the world, reaching 12.3 million hectares, around 46% are smallholders with very low productivity couse income of oil palm farmers is very low. One effort to take over the problems is to develop an intercroping pattern of soybean- oilpalm by trimming the tips of the midribs of oil palm plants on thewider side of interspace of palm stand rows, to increase light interception accepted by soy bean plant surfaces. This study used a randomized block design (RBD) arranged in factorial 4x3 with three replications. The first treatment is cutting the edge of the oil palm midrib, namely P1 = 50 cm, P2 = 100 cm, P3 = 150 cm. The second treatment was low light intensity tolerant soybean varieties, namely: V1 = Dena 1, V2 = Anjasmoro and V3 = Detam 1. Other actions were carried out according to generally accepted standards. To see the effect of treatment carried out the F test at the level of 5%, and continued with the HSD test at the level of 5% to see the difference among treatments. The results showed that a hope of developing soybean plants as intercrops, although statistically did not show a significant difference. FFB results were not significantly affected by the act of trimming the midrib as 150 cm.
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