Pengaruh Pemberian Pupuk Kandang Sapi dan POC Limbah Kulit Kopi Terhadap Pertumbuhan dan Produksi Tanaman Jagung Manis (Zea mays Saccharata L.)

Abstract

This research held in Medan facalty Agriculture Universitas Medan Area was located at PBSI No. 1 Medan Estate Percut Sei Tuan. sub distnct with attitude of approximately 22 m dpl. With flat topography and alluvial soil types. Since October until December 2018. Research method that used in this study for randouhized block design (RAK) with 2 treatmant factors, Namely : 1 ) factor of giving cow manure (notation P), which consist of 4 levels treatments, namely : P0 = without cow manure (control); P1 = cow manure 10 tons/ha (1400 g/plot ); P2 = cow manure 20 tons /ha (2800 g/plot); P3 = cow manure 30 tons/ha (4200 g/plot) and 2) factor of giving liquid organic fertilizer (POC) coffee skin waste (K notation). Which consist of 4 levels, such as : K0 = without giving manure POC of coffee leather waste ; K1 = giving POC of coffee leather with concentration 20 % (200 ml/liter of water) ; K2 = giving POC of coffee leather with concentration 40 % (400 ml/liter of water) K3 = giving POC of coffee leather with concentration 60 % (600 ml / liter of water) each treatment was repeated for two times. Parameter that observed in this study consist of plant height, amount of leaves. The age of flower , ear length of plant, production per sampel and production per plot here is the result that gotten from this research: 1 ) giving cow manure is very significant for length of plant, ear length of plant, crup production per plot. But there is no significant for amount of leaves and flower age .Giving 1,4 kg / plot cow manure is the best treatment to increase the growth and production of sweet corn plants. 2) the application of liquid organic of coffee leather couldn’t effect obviously for plant height, leaf number, flower age, ear length of plant, crop production per sample and crop production per plot, and 3) the combination of treatment between cow manure and liquid organic fertilizer of coffee leather, couldn’t get significant obviously with plant height, leaf number, flower age, ear length of plat per sample, and production of plant per sample and per plot.