Effect of fertilization and plant density on the dry matter production of two maize (Zea mays L.) hybrids

1999 ◽  
Vol 27 (4) ◽  
pp. 433-438
Author(s):  
A. Megyes ◽  
A. Dobos ◽  
T. Rátonyi ◽  
L. Huzsvai
1978 ◽  
Vol 47 (4) ◽  
pp. 536-540
Author(s):  
Joji ARIHARA ◽  
Fumio IWATA ◽  
Kazuyuki WATANABE

2017 ◽  
Vol 5 (2) ◽  
pp. 117-127
Author(s):  
Lesmin Yigibalom ◽  
Tri Ida Wahyu Kustyorini ◽  
Aju Tjatur Nugroho Krisnaningsih

Abstrak Penelitian ini bertujuan untuk mengetahui pengaruh lama perendaman biji jagung pada larutan urin kelinci terhadap produktivitas fodder jagung(zea mays) dengan sistem hidroponik.Metode penelitian yang digunakan adalah percobaan lapang dengan menggunakan Rancangan Acak Lengkap (RAL) dengan 5 perlakuan dan 5 ulangan.Perlakuan penelitian yaitu P0 (tanpa perendaman), P1 perendaman pada air 24 jam, perendaman pada larutan urin P2 (8 jam), P3 (16 jam), dan P4 (24 jam). Variabel yang diamati dalam penelitian ini lama perendaman biji jagung yang berbeda dan larutan urin kelinci, variabel tersebut berkaitan dengan persentase perkecambahan, persentase kecambah normal, produksi segar, produksi bahan kering, produksi bahan organik, produksi protein kasar, produksi serat kasar. Analisis yang digunakan adalah analisis sidik ragam (ANOVA). Hasil menunjuk kan bahwa perlakuan perendaman biji jagung dalam larutan urin kelinci memberi pengaruh sangat nyata (P<0,01) terhadap Persentase kecambah normal produksi hijauan segar, produksi bahan kering, produksi bahan organik,produksi serat kasar , produksi protein kasar, sedangkan pada hasil pengamatan pada persentase kecambah memberi pengaruh tidak nyata (P>0,05), persentase kecambah normal tertinggi pada perlakuan P2 (99,3%) dan P1 (98,1%), produksi segar tertinggi pada P2 (384,2 gram)  produksi bahan kering tertinggi pada P2 (113,92  gram), produksi protein kasar tertinggi pada P2  (61,2 gram)  produksi bahan organik P2 (36,0 gram) dan produksi serat kasar P2 (55,58 gram). Kesimpulan dari hasil penelitian ini bahwa perlakuan perendaman biji jagung selama 8 jam dengan larutan urin kelinci dapat membrikan pengaruh yang lebih baik terhadap produktivitas fodder jagung dengan sistem hidroponik.   Abstract            This study aimed to determine the effect of soaking time of corn kernels on rabbit urine solution on the productivity of corn fodder (zea mays) with hydroponic systems. The research method used was a field experiment using a completely randomized design (CRD) with 5 treatments and 5 replications. Maintenance treatment is P0 (without immersion), P1 (immersion on water 24 hours), immersion on urine solution P2 (8 hours), P3 (16 hours), P4 (24 hours). Variables observed in this study were different lengths of corn seed immersion and rabbit urine solution, these variables were related to germination percentage, percentage of normal sprouts, fresh production, dry matter production, organic matter production, crude protein production, crude fiber production. The analysis used was variance analysis (ANOVA). These results indicate that the treatment of soaking corn kernels in the urine solution of rabbits had a very significant effect (P <0.01). ) to the percentage of normal germination of fresh forage production, dry matter production, production of organic matter, crude fiber production, crude protein production, while the results of observations on the percentage of sprouts had no significant effect (P> 0.05) P2 (99.3%) and P1 (98.1%), highest fresh production in P2 (384.2 grams) highest dry matter production in P2 (113.92 grams), highest crude protein production in P2 (61.2 gram) production of organic matter P2 (36.0 grams) and production of crude fiber P2 (55.58 grams). The conclusions from the results of this study that the treatment of corn seed immersion for 8 hours with rabbit urine solution can provide a better influence on the productivity of corn fodder with a hydroponic system.


1990 ◽  
Vol 41 (3) ◽  
pp. 449 ◽  
Author(s):  
GK McDonald

The growth and yield of two lines of uniculm barley, WID-103 and WID-105, were compared over a range of sowing rates (50-400 kg/ha) with the commercial varieties Galleon and Schooner. The experiments were conducted at Strathalbyn, S.A., in 1986, 1987 and 1988 and at the Waite Agricultural Research Institute in 1987. A third tillered variety, Clipper, was included in the comparison in 1988. Over the three years plant populations measured early in the season ranged from 39/m2 to 709/m2, and grain yields from 97 to 41 1 g/m2. Dry matter production at ear emergence increased with greater plant density, and both the tillered varieties and the uniculm lines showed similar responses to higher sowing rates. At maturity, dry matter production of the tillered barleys was greater than or equal to that of the uniculms and the harvest indices (HIs) of the two types were similar. Consequently, grain yields of the tillered types were greater than or equal to the yields of the uniculms. Over the four experiments the tillered varieties had a 6% higher yield. The number of ears/m2 was the yield component most affected by plant density in both the tillered and uniculm barleys. The uniculm lines had more spikelets/ear, but tended to set fewer grains/spikelet and produce smaller kernels. The experiments failed to demonstrate any advantage of the uniculm habit to the grain yield of barley. These results differ from previous experiments that showed that a uniculm line, WID-101, had a higher yield than the tillered variety Clipper. It is suggested that the uniculm habit per se was not the cause of this higher yield, but its higher HI resulted in it outyielding Clipper. Current varieties, however, have HIs similar to the uniculm lines and yield equally to or more than the uniculm barleys examined. To further improve the grain yield of uniculm barley, greater dry matter production is necessary as the HIs of these lines are already high.


2002 ◽  
Vol 42 (8) ◽  
pp. 1043 ◽  
Author(s):  
M. Seymour ◽  
K. H. M. Siddique ◽  
N. Brandon ◽  
L. Martin ◽  
E. Jackson

The response of Vicia sativa (cvv. Languedoc, Blanchefleur and Morava) and V. benghalensis (cv. Barloo) seed yield to seeding rate was examined in 9 field experiments across 2 years in south-western Australia. There were 2 types of field experiments: seeding rate (20, 40, 60, 100 and 140 kg/ha) × cultivar (Languedoc, Blanchefleur, and Morava or Barloo), and time of sowing (2 times of sowing of either Languedoc or Blanchefleur) × seeding rate (5,�7.5, 10, 15, 20, 30, 40, 50, 75 and 100 kg/ha).A target density of 40 plants/m2 gave 'optimum' seed yield of vetch in south-western Australia. In high yielding situations, with a yield potential above 1.5 t/ha, the 'optimum' plant density for the early flowering cultivar Languedoc (85–97 days to 50% flowering) was increased to 60 plants/m2. The later flowering cultivar Blanchefleur (95–106 days to 50% flowering) had an optimum plant density of 33 plants/m2 at all sites, regardless of fitted maximum seed yield. Plant density in the range 31–38 plants/m2 was found to be adequate for dry matter production at maturity of Languedoc and Blanchefleur. For the remaining cultivars Barloo and Morava we were unable to determine an average optimum density for either dry matter or seed yield due to insufficient and/or inconsistent data.


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